CN107904023B - Method for extracting residual grease from degreased dried shrimp residues of Antarctic krill - Google Patents
Method for extracting residual grease from degreased dried shrimp residues of Antarctic krill Download PDFInfo
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- CN107904023B CN107904023B CN201711394965.3A CN201711394965A CN107904023B CN 107904023 B CN107904023 B CN 107904023B CN 201711394965 A CN201711394965 A CN 201711394965A CN 107904023 B CN107904023 B CN 107904023B
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- 241000238557 Decapoda Species 0.000 title claims abstract description 57
- 241000239366 Euphausiacea Species 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000004519 grease Substances 0.000 title claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000000605 extraction Methods 0.000 claims abstract description 56
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000005238 degreasing Methods 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 238000007873 sieving Methods 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims abstract description 3
- 239000000706 filtrate Substances 0.000 claims description 9
- 238000002390 rotary evaporation Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 abstract 1
- 235000019441 ethanol Nutrition 0.000 description 14
- 238000001914 filtration Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 241000239370 Euphausia superba Species 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- JEBFVOLFMLUKLF-IFPLVEIFSA-N Astaxanthin Natural products CC(=C/C=C/C(=C/C=C/C1=C(C)C(=O)C(O)CC1(C)C)/C)C=CC=C(/C)C=CC=C(/C)C=CC2=C(C)C(=O)C(O)CC2(C)C JEBFVOLFMLUKLF-IFPLVEIFSA-N 0.000 description 3
- 235000013793 astaxanthin Nutrition 0.000 description 3
- MQZIGYBFDRPAKN-ZWAPEEGVSA-N astaxanthin Chemical compound C([C@H](O)C(=O)C=1C)C(C)(C)C=1/C=C/C(/C)=C/C=C/C(/C)=C/C=C/C=C(C)C=CC=C(C)C=CC1=C(C)C(=O)[C@@H](O)CC1(C)C MQZIGYBFDRPAKN-ZWAPEEGVSA-N 0.000 description 3
- 229940022405 astaxanthin Drugs 0.000 description 3
- 239000001168 astaxanthin Substances 0.000 description 3
- 229940106134 krill oil Drugs 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- GVJHHUAWPYXKBD-UHFFFAOYSA-N (±)-α-Tocopherol Chemical compound OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 235000015067 sauces Nutrition 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 229930003427 Vitamin E Natural products 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Abstract
本发明公开了一种从南极磷虾脱脂干虾渣中提取剩余油脂的方法，包括如下步骤：1)将南极磷虾脱脂干虾渣磨粉、过筛，得虾渣粉；2)向虾渣粉中加入设定浓度的乙醇，进行超高压提取，超高压提取的压力为580‑600MPa，保压设定时间，卸压后，重复加压提取1‑3次，提取的压力为580‑600MPa；3)将卸压后的物料取出，过滤，蒸去乙醇，得到油脂。采用乙醇作为提取溶剂，采用超高压提取方法对干虾渣中的油脂进行提取时，将提取压力设定为600MPa左右，保压一定时间后，卸压，然后再次升压至600MPa左右，便可以有效地将脱脂后干虾渣中的油脂提取出来，并且取得了较高的得油率，提高了南极磷虾的油脂产率，降低了成本，提高了产品的竞争力。The invention discloses a method for extracting residual oil from Antarctic krill degreasing dried shrimp residue, comprising the following steps: 1) grinding and sieving Antarctic krill degreasing dried shrimp residue to obtain shrimp residue powder; 2) feeding shrimp Add ethanol with a set concentration to the slag powder, and carry out ultra-high pressure extraction. The pressure of ultra-high pressure extraction is 580-600MPa, and the pressure is maintained for a set time. After the pressure is relieved, the pressure extraction is repeated 1-3 times, and the extraction pressure is 580- 600MPa; 3) Take out the material after pressure relief, filter, and evaporate the ethanol to obtain grease. When ethanol is used as the extraction solvent, and the oil in the dried shrimp residue is extracted by the ultra-high pressure extraction method, the extraction pressure is set to about 600MPa, after maintaining the pressure for a certain period of time, the pressure is relieved, and then the pressure is raised to about 600MPa again. The oil in the dried shrimp residue after degreasing is effectively extracted, and a high oil yield is obtained, which improves the oil yield of Antarctic krill, reduces the cost, and improves the competitiveness of the product.
Description
Technical Field
The invention relates to a method for extracting grease from degreased dried euphausia superba residue, belonging to the fields of food, chemistry and medicine.
Background
Antarctic krill is a huge biomass living in Antarctic oceans (about 5-50 million tons, with differences in different estimation methods). The antarctic krill is rich in oil, and the oil content is different due to factors such as season, age, sex, abundance degree of food, environment and the like. The oil and fat is rich in unsaturated fatty acids (such as EPA, DHA, DPA, etc.), astaxanthin and its lipid, phospholipid, vitamin E, etc. At present, the antarctic krill oil is a high value-added product widely sold in the world, and the antarctic krill oil product is mainly produced in Canada, Japan, Norway and the United states. After 2009, several manufacturers in China began producing euphausia superba oil that meets international standards.
The method for extracting the krill oil from the krill mainly comprises the step of dispersing the krill in an organic solvent or a mixed solution of different organic solvents for extraction, wherein the protein content of the residual dried krill residue reaches over 74 percent, and the percentage content of substances such as ash, amino acid and the like in the degreased dried krill residue is increased to a certain extent relative to the non-degreased krill. After degreasing, most of grease (shrimp sauce) in the krill is extracted, and a small amount of grease is remained in the shrimp residues, and the grease is difficult to extract by using the traditional shrimp sauce extraction method.
Therefore, the prior art has not been studied to degrease the dried euphausia superba residue after degreasing, and the prior krill degreasing method is difficult to apply to degreasing the dried euphausia superba residue after degreasing, and whether and how to degrease the dried euphausia superba residue after degreasing can be continued becomes a new research subject.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to provide the method for extracting the residual oil from the degreased dried shrimp residues of the Antarctic krill, which can further extract a small amount of oil residual in the degreased dried shrimp residues, improve the oil yield of the Antarctic krill and improve the competitiveness of the shrimp oil product.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method for extracting residual grease from degreased dried shrimp residues of Antarctic krill comprises the following steps:
1) grinding and sieving the degreased dry shrimp residues of the Antarctic krill to obtain shrimp residue powder;
2) adding ethanol with a set concentration into the shrimp residue powder, performing ultrahigh pressure extraction at the pressure of 580-600MPa, maintaining the pressure for a set time, and repeatedly performing pressure extraction for 1-3 times after pressure relief, wherein the extraction pressure is 580-600 MPa;
3) and taking out the materials subjected to pressure relief, filtering, and evaporating ethanol to obtain the grease.
The ultrahigh pressure extraction is totally called as 'ultrahigh cold isostatic pressure extraction', and is characterized in that ultrahigh hydrostatic pressure is acted on feed liquid at normal temperature, the preset pressure is kept for a certain time, the pressure inside and outside the extract is quickly released after the pressure inside and outside the extract reaches balance (effective components reach dissolution balance), the internal and external osmotic pressure difference of the material is increased, and the effective components in the material are transferred into an extracting solution, so that the aim of extracting target components is fulfilled. The pressure has great influence on the extraction capacity of the solvent, when the extraction is carried out by using an ultrahigh pressure extraction method and ethanol as an extraction solvent for extracting the oil such as astaxanthin and the like in the prawns, the extraction pressure is within the range of 200-400MPa, the extraction amount of the oil such as astaxanthin and the like is the maximum and exceeds 400MPa, and the extraction amount is obviously reduced. Therefore, when ethanol is used as an extraction solvent in the field, the extraction pressure of 200-.
The inventor finds that when the oil in the dry shrimp residues is extracted by using ethanol as an extraction solvent and using an ultrahigh pressure extraction method, the extraction pressure is set to be about 600MPa, the pressure is maintained for a certain time, the pressure is relieved, and then the pressure is increased to about 600MPa again, so that the oil in the degreased dry shrimp residues can be effectively extracted, which belongs to a breakthrough discovery and overcomes the technical bias in the field.
Preferably, in the step 1), the shrimp residue powder is sieved by a 80-mesh sieve.
The inventor finds that the particle size of the shrimp residue powder directly influences the specific surface area of the shrimp residue powder in contact with the solvent, and the particle size of the shrimp residue powder has different influences on the extraction effect of the oil under different extraction solvents. And the extraction pressure has different influences on the extraction of the grease under different shrimp residue powder particle sizes. The verification shows that when the ultrahigh-pressure extraction method disclosed by the invention is matched with the granularity of the shrimp residue powder, a better extraction effect can be obtained, and the extraction effect of the grease can be influenced by the excessively large or excessively small average granularity of the shrimp residue powder.
Preferably, in the step 2), the mass concentration of the added ethanol is 85-100%.
Further preferably, in the step 2), the adding mass of the ethanol is 8-20 times, preferably 10-20 times of the mass of the shrimp residue powder. So as to ensure that the grease in the shrimp residue powder is better extracted.
Preferably, in the step 2), the pressure of the ultrahigh pressure extraction is 600 MPa.
Preferably, in the step 2), the pressure maintaining time of the ultrahigh pressure extraction is 10-15 min.
Preferably, in step 2), the number of times of the pressure extraction is repeated is 1. The oil extraction effect can be obtained by repeatedly pressurizing and extracting for 1 time, the repeated pressurizing and extracting times are increased, and the oil yield is not obviously improved.
Preferably, in the step 3), the filtrate is subjected to rotary evaporation at 68-73 ℃ to remove the solvent, so as to obtain the grease.
The invention has the beneficial effects that:
when the oil in the dried shrimp residues is extracted by using ethanol as an extraction solvent and an ultrahigh pressure extraction method, the extraction pressure is set to be about 600MPa, the pressure is maintained for a certain time, the pressure is relieved, and then the pressure is increased to about 600MPa again, so that the oil in the degreased dried shrimp residues can be effectively extracted, the higher oil yield is obtained, the oil yield of the euphausia superba is improved, the cost is reduced, and the product competitiveness is improved.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example one
6kg of degreased dry shrimp residues of Antarctic krill (the water content is less than or equal to 7 percent by mass) are loaded into a funnel of a pulverizer, and the material is unloaded at the speed of 0.5kg per minute and the rotating speed is 8000 rpm. And (4) sieving the ground shrimp residue powder with a 80-mesh sieve. The rest of the dried shrimp residue is ground under the same condition until all the dried shrimp residue is ground and sieved by a 80-mesh sieve.
Adding 500ml of 85% ethanol into 50g of 80-mesh shrimp residue powder, and putting the mixture into an ultrahigh pressure device for pressure extraction, wherein the pressure is 600MPa, and the pressure maintaining time is 10 minutes. Then the pressure is relieved to normal pressure, and the materials are not taken out. Repeating the above extraction process once. Taking out the materials, stirring uniformly and filtering. The filtrate was rotary evaporated at 68-73 ℃. 2.6g of oil was obtained, and the oil yield was 5.2%.
Example two
6kg of degreased dry shrimp residues of Antarctic krill (the water content is less than or equal to 7 percent by mass) are loaded into a funnel of a pulverizer, and the material is unloaded according to 0.8kg per minute at the rotating speed of 8000 rpm. And (4) sieving the ground shrimp residue powder with a 80-mesh sieve. The remaining dried shrimp residues are ground under the same conditions until all the shrimp residues are ground and sieved by a 80-mesh sieve.
Adding 500ml of 95% ethanol into 50g of 80-mesh shrimp residue powder, and putting the mixture into an ultrahigh pressure device for pressure extraction, wherein the pressure is 600MPa, and the pressure maintaining time is 15 minutes. Then the pressure is relieved to normal pressure, and the materials are not taken out. The above process was repeated once. Taking out the materials, stirring uniformly and filtering. The filtrate was rotary evaporated at 68-73 ℃. 2.7g of oil was obtained, and the oil yield was 5.4%.
EXAMPLE III
6kg of degreased dry shrimp residues of Antarctic krill (the water content is less than or equal to 7 percent by mass) are loaded into a funnel of a pulverizer, and the material is unloaded according to 0.6kg per minute at the rotating speed of 8000 rpm. The milled shrimp meal is sieved by a 80-mesh sieve. The remaining residue was ground under the same conditions until all shrimp residue was ground and sieved through a 80 mesh sieve.
Adding 500ml of absolute ethyl alcohol into 50g of 80-mesh shrimp residue powder, and putting the mixture into an ultrahigh pressure device for pressure extraction, wherein the pressure is 600MPa, and the pressure maintaining time is 12 minutes. Then the pressure is relieved to normal pressure, and the materials are not taken out. The above process was repeated once. Taking out the materials, stirring uniformly and filtering. The filtrate was rotary evaporated at 68-73 ℃. 2.5g of oil was obtained, and the oil yield was 5%.
Comparative example 1
The differences from the first embodiment are as follows: adding 500ml of 85% ethanol into 50g of 80-mesh shrimp residue powder, and putting the mixture into an ultrahigh pressure device for pressure extraction, wherein the pressure is 600MPa, and the pressure maintaining time is 10 minutes. Then the pressure is relieved to normal pressure, the pressure extraction process is not repeated, the materials are directly taken out, and the materials are evenly stirred and filtered. The filtrate was rotary evaporated at 68-73 ℃. 0.5g of oil was obtained, and the oil yield was 1%.
Comparative example No. two
The differences from the first embodiment are as follows: adding 500ml of 85% ethanol into 50g of 80-mesh shrimp residue powder, and putting the mixture into an ultrahigh pressure device for pressure extraction, wherein the pressure is 300MPa, and the pressure maintaining time is 10 minutes. Then the pressure is relieved to normal pressure, and the materials are not taken out. Repeating the above extraction process once. Taking out the materials, stirring uniformly and filtering. The filtrate was rotary evaporated at 68-73 ℃. 0.6g of oil was obtained, and the oil yield was 1.2%.
Comparative example No. three
The differences from the first embodiment are as follows: adding 500ml of 85% ethanol into 50g of 80-mesh shrimp residue powder, and putting the mixture into an ultrahigh pressure device for pressure extraction, wherein the pressure is 300MPa, and the pressure maintaining time is 10 minutes. Then the pressure is relieved to normal pressure, and the materials are not taken out. Repeatedly pressurizing to 600MPa, and maintaining the pressure for a period of time. Taking out the materials, stirring uniformly and filtering. The filtrate was rotary evaporated at 68-73 ℃. 0.8g of oil was obtained, and the oil yield was 1.6%.
Comparative example No. four
The differences from the first embodiment are as follows: adding 500ml of 85% ethanol into 50g of 80-mesh shrimp residue powder, and putting the mixture into an ultrahigh pressure device for pressure extraction, wherein the pressure is 600MPa, and the pressure maintaining time is 10 minutes. Then the pressure is relieved to normal pressure, and the materials are not taken out. Repeatedly pressurizing to 400MPa, and maintaining the pressure for a period of time. Taking out the materials, stirring uniformly and filtering. The filtrate was rotary evaporated at 68-73 ℃. 1g of oil is obtained, and the oil yield is 2 percent.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
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| CN111139126A (en) * | 2020-01-14 | 2020-05-12 | 广东海洋大学 | A kind of extraction method and application of fish oil |
| CN114525168A (en) * | 2022-01-04 | 2022-05-24 | 中国水产科学研究院东海水产研究所 | Method for extracting antarctic krill oil from antarctic krill powder raw material |
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