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CN111588037A - Euphausia superba oil phospholipid oral liquid with high EPA/DPA (eicosapentaenoic acid/docosahexaenoic acid) - Google Patents

Euphausia superba oil phospholipid oral liquid with high EPA/DPA (eicosapentaenoic acid/docosahexaenoic acid) Download PDF

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Publication number
CN111588037A
CN111588037A CN202010453551.9A CN202010453551A CN111588037A CN 111588037 A CN111588037 A CN 111588037A CN 202010453551 A CN202010453551 A CN 202010453551A CN 111588037 A CN111588037 A CN 111588037A
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antarctic krill
oral liquid
phospholipid
liquid
krill oil
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王群
丁洪雪
马迪
贾盼盼
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Qingdao Haoda Biotechnology Engineering Co ltd
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Qingdao Haoda Biotechnology Engineering Co ltd
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Abstract

The invention discloses a high EPA/DPA type antarctic krill oil phospholipid oral liquid, belonging to the technical field of marine organisms. According to the invention, the antarctic krill powder is used as a raw material, and the modern biological separation technology, the biological enzymolysis technology and the mixed microbial fermentation technology are integrated, so that the extraction yield of the antarctic krill oil and the content of DHA, EPA and the like in the oral liquid are obviously improved, and the requirements of medical health on high fatigue resistance, cancer resistance and the like are met; the extraction rate of the antarctic krill oil is high, the content of functional accompanying substances such as phospholipid, astaxanthin, DHA, EPA and the like in the obtained antarctic krill oil phospholipid oral liquid is high, especially the content of DHA and EPA in the antarctic krill oil phospholipid oral liquid is obviously improved, and the method has a wide application and popularization prospect.

Description

Euphausia superba oil phospholipid oral liquid with high EPA/DPA (eicosapentaenoic acid/docosahexaenoic acid)
Technical Field
The invention relates to a high-EPA/DPA type antarctic krill oil phospholipid oral liquid and a preparation method thereof, in particular to a high-EPA/DPA antarctic krill oil phospholipid oral liquid prepared by using antarctic krill powder as a raw material through synergistic fermentation of microorganisms, and belongs to the technical field of marine organisms.
Background
Antarctic continents are the only uncontaminated continents on the earth, and the world that has been praised as "clean and clear" is the last piece of "clean soil" on the earth. The ocean around the Antarctic continent is called a rich and clean "marine ranch", and the ocean is filled with living organisms, where there are seaweeds, corals, starfishes and sponges, and there are many small organisms called krill, which is food on which numerous fishes, seabirds, seals, penguins and whales in Antarctic continent live, and plays an important role in the south ocean food chain. Antarctic krill is the fourth largest resource in areas following grains, petroleum, coal. The storage amount of the antarctic krill is quite remarkable, and the nutritional value is extremely high. It is the highest protein-containing organism found today, with a protein content of more than fifty percent, and also contains a great abundance of amino acids and vitamin A essential for human tissues.
At present, Antarctic krill is mainly applied to medicine and food by Antarctic krill oil. Antarctic krill oil is extracted by a patent ultralow temperature extraction method, is natural health food given to human beings by nature, and has the effect that other foods cannot be replaced. The krill oil is clinically proved to have the advantages of ultra-strong blood fat reduction, blood sugar reduction, blood pressure reduction, nutrition passing through a blood brain barrier and activation of brain cells and nerves, and prevention and treatment of cerebrovascular diseases; simultaneously, preventing and treating coronary atherosclerosis and coronary heart disease, and preventing cardiovascular diseases such as myocardial infarction, stent, bypass, secondary recurrence and the like; in addition, the antarctic krill oil can also have multiple effects of resisting bacteria and diminishing inflammation, preventing the occurrence and development of cancers, delaying fatigue, regulating endocrine and the like.
Currently, regarding the preparation of antarctic krill oil in the prior art, mostly, an enzymatic hydrolysis or physical method is adopted for preparation, for example, patent 201810078300.X discloses a preparation method of antarctic krill oil, which takes antarctic krill powder as a raw material, and adopts a multi-stage grinding synergistic enzymatic hydrolysis method under a specific system condition to enrich crude components rich in lipid in antarctic krill, and then crude extracts are obtained through separation and drying processes; extracting the crude extract by using a mixed solvent of ethanol and ethyl acetate, and performing primary concentration, cooling, separation and secondary concentration on the extract to obtain high-quality euphausia superba oil; patent 201811290847.2 discloses a method for preparing antarctic krill oil with low unsaponifiable matter, which comprises the following steps: adding 75-99% ethanol solution into the crude antarctic krill oil, and uniformly stirring to obtain a mixed solution; adding cyclodextrin and/or cyclodextrin derivatives into the mixed solution, stirring and filtering to obtain filtrate; distilling the filtrate under reduced pressure to remove ethanol to obtain low unsaponifiable euphausia superba oil; patent 201811231007.9 discloses a high EPA/DHA type antarctic krill oil phospholipid oral liquid and a preparation method thereof, wherein the oral liquid comprises step S1: refining the antarctic krill oil to remove triglyceride, thereby obtaining an antarctic krill oil phospholipid solution; step S2: mixing the Antarctic krill oil phospholipid solution and the solvent according to a certain proportion, adjusting the pH value to be neutral, homogenizing under high pressure, and sterilizing to obtain the euphausia superba oil phospholipid gel. Compared with the prior art, the report that the high EPA/DHA antarctic krill oil phospholipid and the biological products thereof are prepared by a microbial fermentation synergistic enzymolysis method is not found in the prior art.
Disclosure of Invention
In order to overcome the defects of the prior art and meet the requirements of high-efficiency extraction and high-value utilization of antarctic krill oil, the application provides the high-EPA/DPA type antarctic krill oil phospholipid oral liquid, integrates the modern bioseparation technology, the biological enzymolysis technology and the mixed microbial fermentation technology, develops and develops the high-EPA/DPA antarctic krill oil phospholipid oral liquid, and meets the requirements of medical health on high fatigue resistance, cancer resistance and the like; the extraction rate of the antarctic krill oil is high, the content of functional accompanying substances such as phospholipid, astaxanthin, DHA, EPA and the like in the obtained antarctic krill oil phospholipid oral liquid is high, especially the content of DHA and EPA in the antarctic krill oil phospholipid oral liquid is obviously improved, and the method has a wide application and popularization prospect.
The invention realizes the technical effects through the following technical scheme:
a high EPA/DPA type antarctic krill oil phospholipid oral liquid mainly comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 16h at the temperature of 28-35 ℃;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Preferably, the complex enzyme preparation in the step (4) is one or a mixture of more of protease, lipase and glucanase.
Preferably, the mass ratio of the protease, the lipase and the glucanase is 3:1: 1.
Preferably, the protease is one or more of pepsin, neutral protease, bromelain, trypsin, papain and flavourzyme.
Preferably, the lipase is one or a mixture of more of candida esterase, aspergillus esterase, pseudomonas esterase and rhizopus esterase.
Preferably, the lipase is a mixture of candida esterase and pseudomonas esterase in a mass ratio of 2: 1.
Preferably, the compound microbial agent in the step (5) is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the compound microbial agent to the bacillus megaterium is 3:2: 1.
Preferably, the ventilation rate in the aerobic fermentation process in the step (5) is 0.2-0.3 m3/m3.min。
The preparation method of the beer yeast seed liquid comprises the following steps: under the aseptic operation condition, two rings of strains are picked from the inclined plane of the yeast YDP by using an inoculating ring, inoculated into a 500mL triangular flask containing 300mLPDA liquid culture medium, subjected to shaking culture at the temperature of between 28 and 32 ℃ and at the speed of 140r/min for 24 hours, and then inoculated into a seed tank for expanded culture according to the process to prepare the yeast seed liquid, wherein the effective viable count of the seed liquid is required to be more than or equal to 109cfu/mL。
The preparation method of the seed liquid of the bacillus subtilis and the bacillus megaterium comprises the following steps: under the aseptic condition, LB culture medium is adopted to culture for 24 hours under the condition of 28-32 ℃ to prepare liquid bacillus subtilis and bacillus megatherium seed liquid, and the effective viable count of the seed liquid is required to be more than or equal to 109cfu/mL。
The sweetener is one or more of trehalose, xylitol, sorbitol, mannitol, fructose syrup, and maltose.
The invention provides a high EPA/DPA type antarctic krill oil phospholipid oral liquid, which has the following remarkable advantages compared with the prior art:
(1) according to the application, the antarctic krill powder is used as a raw material, and the modern bioseparation technology, the biological enzymolysis technology and the mixed microbial fermentation technology are integrated, so that the extraction yield of the antarctic krill oil and the content of DHA, EPA and the like in the oral liquid are obviously improved; the complex enzyme preparation has obvious influence on the extraction yield and the active substance content of the antarctic krill oil, and especially has obvious influence on the improvement of the content of DHA, EPA and the like in the antarctic krill phospholipid oral liquid although the influence of glucanase on the extraction preparation of the antarctic krill oil is not obvious;
(2) this application utilizes aerobic bacteria (beer yeast, bacillus subtilis, bacillus megatherium) to ferment antarctic krill powder jointly and draws antarctic krill oil, and the synergistic effect between the make full use of microorganism promotes the content of DHA, EPA etc. in the antarctic krill phospholipid oral liquid, wherein: the beer yeast can generate various enzymes for degrading cell walls in the fermentation process, so that more antarctic krill oil is released from the cell walls, and the yeast is an enzyme capable of releasing combined state phenolic acid, so that the content of active substances in the antarctic krill oil is increased; the bacillus subtilis can kill pathogenic bacteria in fermentation liquor in the high-temperature fermentation process, has strong capacities of producing protease, protease and the like, and can degrade macromolecular starch and protein substances into microorganisms for utilization, so that the extraction yield of the euphausia superba oil is improved; the addition of the bacillus megaterium can obviously improve the content of DHA, EPA and the like in the antarctic krill oil;
(3) the method has simple production process, does not generate chemical change in the preparation process, does not change the chemical structures of DHA and EPA, ensures that the whole reaction process is environment-friendly and has low energy consumption, improves the content of DHA and EPA in the oral liquid, and is beneficial to industrial popularization.
Detailed Description
In the present application, the activation methods of Saccharomyces cerevisiae, Bacillus subtilis, and Bacillus megaterium are as follows:
(1) the preparation method of the beer yeast seed liquid comprises the following steps: under the aseptic operation condition, two rings of strains are picked from the inclined plane of the yeast YDP by using an inoculating ring, inoculated into a 500mL triangular flask containing 300mLPDA liquid culture medium, subjected to shaking culture at the temperature of between 28 and 32 ℃ and at the speed of 140r/min for 24 hours, and then inoculated into a seed tank for expanded culture according to the process to prepare the yeast seed liquid, wherein the effective viable count of the seed liquid is required to be more than or equal to 109cfu/mL;
(2) The preparation method of the seed liquid of the bacillus subtilis and the bacillus megaterium comprises the following steps: under the aseptic condition, LB culture medium is adopted to culture for 24 hours under the condition of 28-32 ℃ to prepare liquid bacillus subtilis and bacillus megatherium seed liquid, and the effective viable count of the seed liquid is required to be more than or equal to 109cfu/mL。
Example 1
A preparation method of high EPA/DPA type antarctic krill oil phospholipid oral liquid comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃; the compound enzyme preparation is a mixture of protease, lipase and glucanase, wherein the mass ratio of the protease, the lipase and the glucanase is 3:1: 1; the protease is a mixture of trypsin, papain and flavourzyme in equal mass; the lipase is a mixture of candida esterase and pseudomonas esterase, and the mass ratio of the lipase to the pseudomonas esterase is 2: 1;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 8h at the temperature of 28-35 ℃; the composite microbial agent is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Example 2
A preparation method of high EPA/DPA type antarctic krill oil phospholipid oral liquid comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃; the compound enzyme preparation is protease; the protease is a mixture of trypsin, papain and flavourzyme in equal mass;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 8h at the temperature of 28-35 ℃; the composite microbial agent is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Example 3
A preparation method of high EPA/DPA type antarctic krill oil phospholipid oral liquid comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃; the compound enzyme preparation is lipase; the lipase is a mixture of candida esterase and pseudomonas esterase, and the mass ratio of the lipase to the pseudomonas esterase is 2: 1;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 8h at the temperature of 28-35 ℃; the composite microbial agent is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Example 4
A preparation method of high EPA/DPA type antarctic krill oil phospholipid oral liquid comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃; the compound enzyme preparation is glucanase;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 8h at the temperature of 28-35 ℃; the composite microbial agent is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Example 5
A preparation method of high EPA/DPA type antarctic krill oil phospholipid oral liquid comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃; the compound enzyme preparation is a mixture of protease and lipase, wherein the mass ratio of the protease to the lipase is 3: 1; the protease is a mixture of trypsin, papain and flavourzyme in equal mass; the lipase is a mixture of candida esterase and pseudomonas esterase, and the mass ratio of the lipase to the pseudomonas esterase is 2: 1;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 8h at the temperature of 28-35 ℃; the composite microbial agent is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Example 6
A preparation method of high EPA/DPA type antarctic krill oil phospholipid oral liquid comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃; the compound enzyme preparation is a mixture of protease and glucanase, wherein the mass ratio of the protease to the glucanase is 3: 1; the protease is a mixture of trypsin, papain and flavourzyme in equal mass;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 8h at the temperature of 28-35 ℃; the composite microbial agent is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Example 7
A preparation method of high EPA/DPA type antarctic krill oil phospholipid oral liquid comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃; the compound enzyme preparation is a mixture of protease, lipase and glucanase, wherein the mass ratio of the protease, the lipase and the glucanase is 3:1: 1; the protease is a mixture of trypsin, papain and flavourzyme in equal mass; the lipase is candida esterase;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 8h at the temperature of 28-35 ℃; the composite microbial agent is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Example 8
A preparation method of high EPA/DPA type antarctic krill oil phospholipid oral liquid comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃; the compound enzyme preparation is a mixture of protease, lipase and glucanase, wherein the mass ratio of the protease, the lipase and the glucanase is 3:1: 1; the protease is a mixture of trypsin, papain and flavourzyme in equal mass; the lipase is pseudomonas esterase;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 8h at the temperature of 28-35 ℃; the composite microbial agent is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Example 9
A preparation method of high EPA/DPA type antarctic krill oil phospholipid oral liquid comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃; the compound enzyme preparation is a mixture of protease, lipase and glucanase, wherein the mass ratio of the protease, the lipase and the glucanase is 3:1: 1; the protease is a mixture of trypsin, papain and flavourzyme in equal mass; the lipase is a mixture of candida esterase and pseudomonas esterase, and the mass ratio of the lipase to the pseudomonas esterase is 1: 2;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 8h at the temperature of 28-35 ℃; the composite microbial agent is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Comparative example 1
A preparation method of high EPA/DPA type antarctic krill oil phospholipid oral liquid comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: stirring and performing enzymolysis on the sterilized slurry for 30min at the temperature of 40-60 ℃;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 8h at the temperature of 28-35 ℃; the composite microbial agent is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Comparative example 2
A high EPA/DPA type antarctic krill oil phospholipid oral liquid mainly comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃; the compound enzyme preparation is a mixture of protease, lipase and glucanase, wherein the mass ratio of the protease, the lipase and the glucanase is 3:1: 1; the protease is a mixture of trypsin, papain and flavourzyme in equal mass; the lipase is a mixture of candida esterase and pseudomonas esterase, and the mass ratio of the lipase to the pseudomonas esterase is 2: 1;
(6) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(7) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(8) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(9) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(10) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(11) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
Example 10 evaluation tables for Euphausia superba oil of different test groups
TABLE 1 evaluation table of Euphausia superba oil phospholipid oral liquid for different test groups
Figure DEST_PATH_IMAGE001
The above experiment results show that the implementation of the invention has better phospholipid extraction rate, and the content of phospholipid, DHA and EPA in the Antarctic krill oil is higher, and example 1 is the best example of the invention. In addition, the test results show that the enzymolysis effect of the compound enzyme preparation and the fermentation effect of the compound microorganisms have significant influence on the content of phospholipid, DHA and EPA in the antarctic krill oil phospholipid oral liquid.
The above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention as set forth in the appended claims.

Claims (10)

1. A high EPA/DPA type antarctic krill oil phospholipid oral liquid is characterized in that the preparation method mainly comprises the following steps:
(1) crushing: the method comprises the following steps of (1) crushing Antarctic krill powder serving as a raw material, and sieving the crushed Antarctic krill powder through a 100-mesh sieve;
(2) dissolving: adding 3 times of purified water into the antarctic krill powder obtained in the step (1), and uniformly stirring;
(3) and (3) sterilization: sterilizing the dissolved euphausia superba powder by using an autoclave, and cooling for later use;
(4) compound enzymolysis: adding a complex enzyme preparation with the mass ratio of 2% into the sterilized slurry, and stirring and performing enzymolysis for 30min at the temperature of 40-60 ℃;
(5) aerobic fermentation: adding a compound microbial agent with the mass ratio of 3% of the enzymolysis liquid into the enzymolysis liquid after enzymolysis, and carrying out aerobic fermentation for 16h at the temperature of 28-35 ℃;
(6) and (3) filtering: performing coarse filtration to remove fermentation thalli;
(7) enzyme deactivation: inactivating enzyme at 100 deg.C for 10 min;
(8) centrifuging: centrifuging at 10000r/min to remove insoluble components;
(9) and (3) drying: spray drying or freeze drying or drying under reduced pressure to water content of less than 10% to obtain crude extract;
(10) leaching of crude extract: adding an extracting agent with the volume ratio of 1: 1-20 times to the crude extract obtained in the step (10), and extracting at 10-60 ℃ for 2-5 hours to obtain a leaching solution; the extractant is a mixed solution of ethanol and ethyl acetate, wherein the volume fraction of the ethyl acetate is 20-40%;
(11) primary concentration, cooling, separation and secondary concentration: concentrating the leaching liquor obtained in the step (11) under reduced pressure until the oil content is more than 30% to obtain a first-stage concentrated solution; standing the primary concentrated solution for 1-2 hours at the temperature of 2-16 ℃, separating by filtering or centrifuging, and performing secondary vacuum concentration on the collected liquid until no solvent residue exists, thus obtaining the high-quality euphausia superba oil;
(12) removing triglyceride: adding a hydration solution which is 1-6 times of the mass content of phospholipid in the antarctic krill oil into the antarctic krill oil, heating while stirring for 30-120 min to 45-70 ℃, cooling, standing, and removing triglyceride through sedimentation separation or centrifugal separation to obtain the antarctic krill oil phospholipid solution; wherein the hydration solution contains 1.5 to 6 mass percent of citric acid;
(13) preparing oral liquid: adding 4-6 times of purified water into the Antarctic krill oil phospholipid solution, adding a flavoring agent with the mass ratio of the Antarctic krill oil phospholipid solution being 2-3%, adjusting the pH value to be neutral, and homogenizing under high pressure to obtain the oral liquid.
2. The euphausia superba oil phospholipid oral liquid with high EPA/DPA content according to claim 1, wherein the complex enzyme preparation in the step (4) is one or a mixture of protease, lipase and glucanase.
3. The euphausia superba oil phospholipid oral liquid with high EPA/DPA content according to claim 1, wherein the mass ratio of the protease, the lipase and the glucanase is 3:1: 1.
4. The euphausia superba oil phospholipid oral liquid with high EPA/DPA content according to claim 1, wherein the protease is one or a mixture of pepsin, neutral protease, bromelain, trypsin, papain and flavourzyme.
5. The euphausia superba oil phospholipid oral liquid with high EPA/DPA content according to claim 1, wherein the lipase is one or more of Candida esterase, Aspergillus esterase, Pseudomonas esterase and Rhizopus esterase.
6. The euphausia superba oil phospholipid oral liquid with high EPA/DPA content according to claim 1, wherein the lipase is a mixture of candida esterase and pseudomonas esterase, and the mass ratio of the lipase to the candida esterase to the pseudomonas esterase is 2: 1.
7. The euphausia superba oil phospholipid oral liquid with high EPA/DPA content as claimed in claim 1, wherein the composite microbial agent in step (5) is a mixed microbial agent of beer yeast, bacillus subtilis and bacillus megaterium, and the mass ratio of the composite microbial agent to the bacillus megaterium is 3:2: 1.
8. The euphausia superba oil phospholipid oral liquid with high EPA/DPA content as claimed in claim 1, wherein the ventilation rate of the aerobic fermentation process in the step (5) is 0.2-0.3 m3/m3.min。
9. The euphausia superba oil phospholipid oral liquid with high EPA/DPA content as claimed in claim 1The method is characterized in that the preparation method of the beer yeast seed liquid comprises the following steps: under the aseptic operation condition, two rings of strains are picked from the inclined plane of the yeast YDP by using an inoculating ring, inoculated into a 500mL triangular flask containing 300mLPDA liquid culture medium, subjected to shaking culture at the temperature of between 28 and 32 ℃ and at the speed of 140r/min for 24 hours, and then inoculated into a seed tank for expanded culture according to the process to prepare the yeast seed liquid, wherein the effective viable count of the seed liquid is required to be more than or equal to 109cfu/mL; the preparation method of the seed liquid of the bacillus subtilis and the bacillus megaterium comprises the following steps: under the aseptic condition, LB culture medium is adopted to culture for 24 hours under the condition of 28-32 ℃ to prepare liquid bacillus subtilis and bacillus megatherium seed liquid, and the effective viable count of the seed liquid is required to be more than or equal to 109cfu/mL。
10. The euphausia superba oil phospholipid oral liquid with high EPA/DPA content according to claim 1, wherein the sweetener is one or more of trehalose, xylitol, sorbitol, mannitol, fructose syrup and maltose.
CN202010453551.9A 2020-05-26 2020-05-26 Euphausia superba oil phospholipid oral liquid with high EPA/DPA (eicosapentaenoic acid/docosahexaenoic acid) Pending CN111588037A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115873656A (en) * 2023-02-03 2023-03-31 山东康境海洋生物工程有限公司 Method for extracting krill oil with high EPA/DHA content

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Publication number Priority date Publication date Assignee Title
CN108179053A (en) * 2018-01-26 2018-06-19 日照职业技术学院 A kind of preparation method of high quality Antarctic krill oil
CN109198042A (en) * 2018-10-22 2019-01-15 辽渔南极磷虾科技发展有限公司 A kind of high EPA/DHA type antarctic krill oil phosphatide oral liquid and preparation method thereof
CN110574930A (en) * 2019-08-02 2019-12-17 青岛浩大生物科技工程有限责任公司 novel process for high-value utilization of euphausia superba
CN110663803A (en) * 2019-11-01 2020-01-10 付鹏磊 Euphausia superba oil polypeptide biological product capable of benefiting spleen and invigorating stomach

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108179053A (en) * 2018-01-26 2018-06-19 日照职业技术学院 A kind of preparation method of high quality Antarctic krill oil
CN109198042A (en) * 2018-10-22 2019-01-15 辽渔南极磷虾科技发展有限公司 A kind of high EPA/DHA type antarctic krill oil phosphatide oral liquid and preparation method thereof
CN110574930A (en) * 2019-08-02 2019-12-17 青岛浩大生物科技工程有限责任公司 novel process for high-value utilization of euphausia superba
CN110663803A (en) * 2019-11-01 2020-01-10 付鹏磊 Euphausia superba oil polypeptide biological product capable of benefiting spleen and invigorating stomach

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115873656A (en) * 2023-02-03 2023-03-31 山东康境海洋生物工程有限公司 Method for extracting krill oil with high EPA/DHA content

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