CN112300864A - Method for improving stability of docosahexaenoic acid - Google Patents
Method for improving stability of docosahexaenoic acid Download PDFInfo
- Publication number
- CN112300864A CN112300864A CN202011140089.3A CN202011140089A CN112300864A CN 112300864 A CN112300864 A CN 112300864A CN 202011140089 A CN202011140089 A CN 202011140089A CN 112300864 A CN112300864 A CN 112300864A
- Authority
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- Prior art keywords
- dha
- oil
- algae oil
- dha algae
- improving
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- MBMBGCFOFBJSGT-KUBAVDMBSA-N all-cis-docosa-4,7,10,13,16,19-hexaenoic acid Chemical compound CC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CCC(O)=O MBMBGCFOFBJSGT-KUBAVDMBSA-N 0.000 title claims abstract description 114
- 235000020669 docosahexaenoic acid Nutrition 0.000 title claims abstract description 69
- 229940090949 docosahexaenoic acid Drugs 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 31
- 241000195493 Cryptophyta Species 0.000 claims abstract description 41
- 238000004332 deodorization Methods 0.000 claims abstract description 15
- 238000007670 refining Methods 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 46
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 239000010779 crude oil Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 238000009874 alkali refining Methods 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000004519 grease Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- 230000001877 deodorizing effect Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 3
- 238000000855 fermentation Methods 0.000 claims description 3
- 230000004151 fermentation Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- BHAAPTBBJKJZER-UHFFFAOYSA-N p-anisidine Chemical compound COC1=CC=C(N)C=C1 BHAAPTBBJKJZER-UHFFFAOYSA-N 0.000 abstract description 2
- 150000002978 peroxides Chemical class 0.000 abstract description 2
- 238000013112 stability test Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 9
- 238000004042 decolorization Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- DVSZKTAMJJTWFG-SKCDLICFSA-N (2e,4e,6e,8e,10e,12e)-docosa-2,4,6,8,10,12-hexaenoic acid Chemical compound CCCCCCCCC\C=C\C=C\C=C\C=C\C=C\C=C\C(O)=O DVSZKTAMJJTWFG-SKCDLICFSA-N 0.000 description 1
- GZJLLYHBALOKEX-UHFFFAOYSA-N 6-Ketone, O18-Me-Ussuriedine Natural products CC=CCC=CCC=CCC=CCC=CCC=CCCCC(O)=O GZJLLYHBALOKEX-UHFFFAOYSA-N 0.000 description 1
- 241001052560 Thallis Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 210000003710 cerebral cortex Anatomy 0.000 description 1
- 235000012000 cholesterol Nutrition 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- KAUVQQXNCKESLC-UHFFFAOYSA-N docosahexaenoic acid (DHA) Natural products COC(=O)C(C)NOCC1=CC=CC=C1 KAUVQQXNCKESLC-UHFFFAOYSA-N 0.000 description 1
- 235000019197 fats Nutrition 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000013350 formula milk Nutrition 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 235000020777 polyunsaturated fatty acids Nutrition 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 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
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- 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
- C11B3/00—Refining fats or fatty oils
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
-
- 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
- C11B3/00—Refining fats or fatty oils
- C11B3/02—Refining fats or fatty oils by chemical reaction
- C11B3/06—Refining fats or fatty oils by chemical reaction with bases
-
- 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
- C11B3/00—Refining fats or fatty oils
- C11B3/10—Refining fats or fatty oils by adsorption
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses a method for improving the stability of docosahexaenoic acid, which comprises the improvement of a DHA refining process, the improvement of a DHA algae oil winterization process, the improvement of a DHA algae oil decoloration process and the deodorization of DHA algae oil. According to the invention, through technical improvement, the DHA algae oil has light smell and faint scent of natural oil, the product is long in time without fishy smell after being placed open, the detection indexes of the peroxide value and the anisidine value of the DHA algae oil product are obviously reduced, the oxidation resistance is strong, and the EPA content is low. Through stability test of DHA algae oil products, the stability of the product is also obviously improved.
Description
Technical Field
The invention relates to the technical field of industrial production, in particular to a method for improving the stability of docosahexaenoic acid.
Background
Docosahexaenoic acid (DHA), commonly known as NAOHUANG, is a polyunsaturated fatty acid which is very important to human body and belongs to an important member of Omega-3 unsaturated fatty acid family. DHA is a main element for the growth and maintenance of cells of the nervous system, is an important constituent fatty acid of the brain and retina, has the content of up to 20 percent in the cerebral cortex of a human body, accounts for the maximum proportion of about 50 percent in the retina of eyes, is vital to the development of intelligence and vision of infants, and has better functions of reducing blood fat, cholesterol, immunity and the like. The DHA algae oil is derived from marine microalgae, is not transferred by a food chain, is relatively safer, and has very low EPA content. Along with the gradual increase of the gas taste and stability of DHA algae oil products, the demand of DHA algae oil markets is continuously expanded, and meanwhile, the application fields are more and more extensive, so that the application markets of milk, beverages, gel candies and the like are gradually increased from the application of the DHA algae oil products to the formula milk powder for pregnant women, infants and the like.
The DHA algae oil gas produced by the prior art has poor taste, fishy smell, poor stability and low oxidation resistance.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The present invention aims at providing a method for improving the stability of docosahexaenoic acid, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for improving the stability of docosahexaenoic acid comprises the steps of DHA refining process improvement, DHA algae oil winterization process improvement, DHA algae oil decoloration process improvement and DHA algae oil deodorization, and specifically comprises the following steps:
the DHA refining process is improved: performing nitrogen charging protection of high-purity nitrogen on crude oil obtained after carrying out enzymolysis and centrifugation on DHA fermentation liquor in a crude oil temporary storage tank, and simultaneously carrying out high-purity nitrogen positive pressure treatment on the DHA crude oil during degumming, alkali refining and decoloring;
the DHA algae oil winterization process is improved: pumping the DHA crude oil subjected to degumming and alkali refining into a winterization tank, cooling the crude oil from 80 ℃, starting to perform metal plate-and-frame filtration treatment when the oil temperature is reduced to below 4 ℃, and performing the filtration treatment in a cold storage;
the DHA algae oil decoloring technology is improved: heating oil to 75-85 deg.C, adding silicon dioxide, vacuumizing, stirring for 30 min, pumping 1% of activated clay weighed based on DHA algae oil into a decolorizing tank, stirring for 30 min, closing a decolorizing vacuum valve, introducing nitrogen of 0.02Mpa, cooling to below 60 deg.C, and filtering;
deodorizing DHA algae oil: before deodorization, DHA algae oil is subjected to deoxidation treatment of grease before being extracted, and is deodorized in a deodorization tower, and simultaneously, steam supplied by the deodorization tower is subjected to deoxidation.
Further, the temperature of the refrigeration house is 0 ℃.
Further, the vacuum degree is maintained at 1500-1700Pa in the DHA algae oil deodorization process.
Further, the silicon dioxide accounts for 1.5% of the weight of the DHA algae oil.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, through technical improvement, the DHA algae oil has light smell and faint scent of natural oil, the product is long in time without fishy smell after being placed open, the detection indexes of the peroxide value and the anisidine value of the DHA algae oil product are obviously reduced, the oxidation resistance is strong, and the EPA content is low. Through stability test of DHA algae oil products, the stability of the product is also obviously improved.
Detailed Description
The invention will be further described with reference to specific embodiments:
the first embodiment is as follows:
the DHA refining process is improved: the method is characterized in that high-purity nitrogen filling protection is carried out on crude oil obtained after DHA fermentation liquor is subjected to enzymolysis and centrifugation in a crude oil temporary storage tank, meanwhile, high-purity nitrogen positive pressure treatment is carried out on the DHA crude oil during degumming, alkali refining and decoloring procedures, and then contact of oxygen in the tank body is isolated, so that oxidation of the DHA algae oil product by the oxygen is isolated, and natural oxidation resistance created by thalli is perfectly protected.
The DHA algae oil winterization process is improved: the DHA crude oil after degumming and alkali refining is pumped into a winterization tank, the temperature of the crude oil is reduced from 80 ℃, metal plate frame filtration treatment is carried out after the oil temperature is reduced to below 4 ℃, the filtration treatment is carried out in a refrigeration house, the filtered winterized oil is clear and transparent in a liquid state, so that the filtered oil is clear and transparent in a liquid state for more than 5.5 hours at the temperature of 0 ℃, no flocculate exists, the DHA content of a filter cake after winterization filtered oil is detected to be 40-46%, the material can be used for production treatment of DHA algae powder through detection, and the recycling of production waste can be carried out, so that the cost can be saved.
The DHA algae oil decoloring technology is improved: the method comprises the following steps of silicon dioxide decolorization and activated clay decolorization:
and (3) decoloring silicon dioxide: heating the oil to 75-85 deg.C, adding silicon dioxide 1.5% of DHA algae oil, and stirring under vacuum for 30 min.
Activated clay decolorization: pumping activated clay weighing 1% of the DHA algae oil into a decoloring tank, stirring for 30 minutes, closing a decoloring vacuum valve, filling nitrogen under 0.02Mpa, cooling to below 60 ℃, and filtering, wherein the DHA algae oil finished product produced by adopting the decoloring process has pure color and luster and clear and transparent body state.
Deodorizing DHA algae oil: before deodorization, DHA algae oil is subjected to grease deoxidation before being extracted, deodorization is carried out in a deodorization tower, meanwhile, steam supplied by the deodorization tower is subjected to deoxidation, the vacuum degree is kept at 1500-1700pa, the higher the vacuum degree of deodorization equipment is, distillation loss caused by grease hydrolysis is effectively avoided, and a grease product with low acid value is ensured to be obtained.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A method for improving the stability of docosahexaenoic acid is characterized by comprising the steps of improving a DHA refining process, improving a DHA algae oil winterization process, improving a DHA algae oil decoloring process and deodorizing the DHA algae oil, wherein the method comprises the following specific steps:
the DHA refining process is improved: performing nitrogen charging protection of high-purity nitrogen on crude oil obtained after carrying out enzymolysis and centrifugation on DHA fermentation liquor in a crude oil temporary storage tank, and simultaneously carrying out high-purity nitrogen positive pressure treatment on the DHA crude oil during degumming, alkali refining and decoloring;
the DHA algae oil winterization process is improved: pumping the DHA crude oil subjected to degumming and alkali refining into a winterization tank, cooling the crude oil from 80 ℃, starting to perform metal plate-and-frame filtration treatment when the oil temperature is reduced to below 4 ℃, and performing the filtration treatment in a cold storage;
the DHA algae oil decoloring technology is improved: heating oil to 75-85 deg.C, adding silicon dioxide, vacuumizing, stirring for 30 min, pumping 1% of activated clay weighed based on DHA algae oil into a decolorizing tank, stirring for 30 min, closing a decolorizing vacuum valve, introducing nitrogen of 0.02Mpa, cooling to below 60 deg.C, and filtering;
deodorizing DHA algae oil: before deodorization, DHA algae oil is subjected to deoxidation treatment of grease before being extracted, and is deodorized in a deodorization tower, and simultaneously, steam supplied by the deodorization tower is subjected to deoxidation.
2. The method for improving the stability of docosahexaenoic acid according to claim 1, wherein the temperature of the refrigerator is 0 ℃.
3. The method as claimed in claim 1, wherein the DHA algal oil is subjected to vacuum degree of 1500-1700pa during deodorization.
4. The method of claim 1, wherein the silica is 1.5% by weight of DHA algal oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140089.3A CN112300864A (en) | 2020-10-22 | 2020-10-22 | Method for improving stability of docosahexaenoic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140089.3A CN112300864A (en) | 2020-10-22 | 2020-10-22 | Method for improving stability of docosahexaenoic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112300864A true CN112300864A (en) | 2021-02-02 |
Family
ID=74327086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011140089.3A Pending CN112300864A (en) | 2020-10-22 | 2020-10-22 | Method for improving stability of docosahexaenoic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112300864A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114343021A (en) * | 2021-12-22 | 2022-04-15 | 嘉必优生物技术（武汉）股份有限公司 | Application of DHA (docosahexaenoic acid) algae oil with improved fishy smell in edible oil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787864A (en) * | 2014-02-20 | 2014-05-14 | 青岛琅琊台集团股份有限公司 | Method for extracting DHA (Docosahexaenoic acid) from marine microalgae fermentation liquor |
| CN104232300A (en) * | 2014-08-28 | 2014-12-24 | 青岛海智源生命科技有限公司 | Method for refining mixed oil of microalgae DHA oil |
| CN108753457A (en) * | 2018-08-03 | 2018-11-06 | 梁云 | The method for improving microbial grease stability and safety |
| CN108753458A (en) * | 2018-08-03 | 2018-11-06 | 梁云 | Improve the refinery practice of microbial grease stability and safety |
| CN108998196A (en) * | 2018-08-20 | 2018-12-14 | 安阳市晶华油脂工程有限公司 | A kind of extracting method of microalgae oil DHA |
-
2020
- 2020-10-22 CN CN202011140089.3A patent/CN112300864A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787864A (en) * | 2014-02-20 | 2014-05-14 | 青岛琅琊台集团股份有限公司 | Method for extracting DHA (Docosahexaenoic acid) from marine microalgae fermentation liquor |
| CN104232300A (en) * | 2014-08-28 | 2014-12-24 | 青岛海智源生命科技有限公司 | Method for refining mixed oil of microalgae DHA oil |
| CN108753457A (en) * | 2018-08-03 | 2018-11-06 | 梁云 | The method for improving microbial grease stability and safety |
| CN108753458A (en) * | 2018-08-03 | 2018-11-06 | 梁云 | Improve the refinery practice of microbial grease stability and safety |
| CN108998196A (en) * | 2018-08-20 | 2018-12-14 | 安阳市晶华油脂工程有限公司 | A kind of extracting method of microalgae oil DHA |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114343021A (en) * | 2021-12-22 | 2022-04-15 | 嘉必优生物技术（武汉）股份有限公司 | Application of DHA (docosahexaenoic acid) algae oil with improved fishy smell in edible oil |
| CN114343021B (en) * | 2021-12-22 | 2024-04-05 | 嘉必优生物技术（武汉）股份有限公司 | Application of DHA algae oil for improving fishy smell in edible oil |
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Application publication date: 20210202 |