CN101181079A - Spot fork-tail catfish oil and preparation method thereof - Google Patents
Spot fork-tail catfish oil and preparation method thereof Download PDFInfo
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Abstract
The invention discloses the channel catfish oil and a preparation method thereof. The method comprises: (1) the preparation of crude oil: leftover is chosen, classified, crushed and steam-cooked to separate and extract crude oil; (2) refining the crude oil, the method comprises: alkali refining and deacidification and concentrated alkali is adopted for alkali refining and deacidification at low temperature, salty boiled water is added and Chinese honeylocust fruit is centrifuged from the mixture after static placing and centrifuging; the mixture is cleaned by water to remove sundries and then dehydrated, decolorized and deodorized. Fish oil of much higher quality can be produced after further deacidification, deodorization, freezing and degreasing. The obtained fish oil comprises 6-10 percent of EPA, 5-12 percent of DHA, 20-27 percent of oleic acid, 7 -11 percent of linoleic acid, 3-6 percent of linolenic acid, 1-5 percent of C20:4 and 15-22 percent of C16:1 and has comparatively high medical and health-protection function, therefore, the channel catfish oil is a significant dietary source of functional fatty acid with great market potential. Meanwhile, compared with average oil processing, the method of the invention has much lower energy consumption and can better maintain the quality of the made fish oil.
Description
Technical field
The present invention relates to a kind of method of refining spot fork-tail catfish oil, the method for refining spot fork-tail catfish oil in the leftover bits and pieces that specifically refers to from fillets of ictalurus punctatus processing, produce.
Background technology
Channel catfish claims the ditch gill again, gains the name because of there is obvious irregular black splotch its health both sides.Channel catfish is the main cultured freshwater fish of the U.S. and since channel catfishes have adaptability strong, easily raise, advantages such as no spur and delicious meat, and become breed highly visible and object is angled in trip.China introduced from the U.S. first in 1984, and at present domestic existing 24 provinces and cities culture, and form the main economic industry of export processing fillet.But further expansion along with process scale, produced increasing fillets of ictalurus punctatus processed side product, comprise fish head, fin, tail and internal organ and fish tallow, main at present the diet of these leftover bits and pieces as carving, fox etc., transportation and preservation are all very difficult, and be worth low, the enthusiasm of dampening the raiser.
Therefore, solve the problem of complex utilization of the leftover bits and pieces that processes the fillets of ictalurus punctatus generation, for widening the channel catfish industry, the added value that promotes channel catfish is significant.
Aspect the utilizing of fish scrap, Shandong Medical University and Yantai can head factory (utilizing fish scrap to extract curative effect fish oil technology) are raw material with the can fish scrap, under alkalescent and an amount of salt condition, prepare fish oil and fish meal by operations such as boiling, squeezing, fatty acid sodium salt, secondary saponification and cryogenic freezings, but this method uses industrial alcohol to make solvent, complex procedures, the fish oil quality that obtains is not high, can't satisfy the demand of medical treatment, healthcare industry." southern aquatic products " paper in 2007 " research of extracting fish oil from the rotten leftover bits and pieces of fish " discloses a kind of leftover bits and pieces with the rotten processing of fishes such as red coat, and to be raw material prepare the method for fish oil by hydrolysis, technology such as saltout, this method is a raw material with the fish gruel mainly, and product quality only can reach the requirement of crude fish oil secondary." research of supercritical carbon dioxide extracting Turtle Oil " of " Chinese oil " 2003 28 10 phases of volume discloses and extracted the method for separating Turtle Oil from soft-shelled turtle, but soft-shelled turtle is a reptile, the composition and the raw material proterties that are oil all have bigger difference with fish, and supercritical technology cost height and be not suitable for industrialization production.By retrieval, relevant fish oil production technology also has " Food Science " " extraction of gem fish oil of 2006 27 7 phases of volume, the analysis refining and aliphatic acid is formed ", " ammonia process extracts the research of fish oil technology " of " Chinese marine drug " 2002 21 3 phases of volume, " traditional light alkali hydrolysis method extracts the research of fish oil technology " of " Mountain Western Medicine S University's journal " 2000 31 6 phases of volume, " preparation of tilapia oil and the fatty acid compositional analysis thereof " of " Shandong fishery " 2005 22 7 phases of volume, " craft discussion of comprehensive utilization dace processing fent fish head " of " Guangzhou food industry science and technology " 1999 15 1 phases of volume, and patent document " a kind of eel animal oil and production method thereof " (patent No. 200410026812.X) or the like, but no matter these methods are in technology, raw material, all exist than big difference and deficiency on the product with this method.
Summary of the invention
For solving the problem of complex utilization of the byproduct (leftover bits and pieces) in the fillets of ictalurus punctatus processing, the inventor invents out a kind of preparation method who refines spot fork-tail catfish oil from the leftover bits and pieces that fillets of ictalurus punctatus processing produces finally through a large amount of production practices.
The preparation method of spot fork-tail catfish oil of the present invention comprises following step:
(1) producing of the thick oil of channel catfish comprises selection, classification, the fragmentation of (1-a) leftovers of ictalurus punctatus.Leftover bits and pieces is divided three classes, and a class is the fish tallow in the channel catfish body, and a class is parts such as the head, fin, tail of channel catfish, and a class is the internal organ of channel catfish in addition; (1-b) separate after most of fish oil boiling is come out carrying out boiling after the above-mentioned classification fragmentation, aqueous phase discarded, residue obtain thick oil.
(2) will go up the thick oil that step produces and make with extra care, comprise: (2-a) alkali-refining deacidification, adopt the low temperature concentrated base to carry out alkali-refining deacidification, add salt water, leave standstill, centrifugation goes out soap stock; (2-b), washing removal of impurities; (2-c) dehydration and decolorization removes raw meat.
For edible fish oil, need further to reduce the acid value of fish oil and the odoring substance in the fish oil, also need carry out following process steps: (2-d) depickling deodorizing, fish oil after the said process processing is placed the deodorizing pot, begin when being vacuum-drawn against absolute pressure to heat up for 0.01-0.02MPa, when being warming up to 140-160 ℃, feeding pressure is that the steam of 0.4-0.7MPa makes the fish oil atomizing, and continue to be warming up to 180-280 ℃, absolute pressure is 0.0025--0.004MPa, ceaselessly vacuumize simultaneously, be incubated cooling after 2-4 hour, stop vavuum pump when temperature is reduced to 70--95 ℃, continue to be cooled to 30--50 ℃;
To place freezing pot through the fish oil of above-mentioned depickling deodorizing, and carry out (2-e) freezing degreasing again, temperature is controlled at 0--6 ℃, and up to micro-precipitate occurring, after continuing freezing and keeping more than 25 hours, filtration promptly obtains high-quality health care and medical fish oil.
The spot fork-tail catfish oil that said process makes, moisture and volatile matter content≤0.1%, acid value is≤1.0mgKOH/g, peroxide value is≤6mmol/kg, impurity is≤0.1%, includes the oleic acid, the linoleic acid of 7-11%, the leukotrienes of 3-6%, the C of 1-5% of DHA, 20-27% of EPA, the 5-12% of 6-10%
20:4C with 15-22%
16:1, total insatiable hunger is closed content of fatty acid and is higher than 70%.
By the spot fork-tail catfish oil that said method makes, find that after testing wherein the aliphatic acid kind utmost point and abundant has more than 50 kinds, total insatiable hunger is closed content of fatty acid more than 70%, and contains abundant cupreol, EPA and DHA.DHA is commonly called as brain gold, has higher medical treatment, health care, and therefore, spot fork-tail catfish oil is the another important meals source of functional fatty acid, and market potential is huge.
Preparation method of the present invention inserts water circulating vacuum pump and oil-sealed rotary pump at the top of depickling deodorizing pot, than and the steam jet pump that general oil prodution industry adopts and the vacuum draw of water circulating vacuum pump, not only has characteristic of low energy consumption (only being the 10-25% of former energy consumption), also improved simultaneously vacuum greatly, under the effect of sprayer unit, increased the surface area of fish oil, make that the efficient of depickling deodorizing is higher, shortened the time of depickling deodorizing, guaranteed that the quality of product oil is better.
The specific embodiment
Below the concrete preparation method of spot fork-tail catfish oil is elaborated.
Embodiment 1:
1, the thick oil of channel catfish produces
1-a, raw material selection, classification, fragmentation
Get 30 tons in channel catfishes leftover bits and pieces, get 5 tons of channel catfish fish tallows, 15 tons of parts such as head, fin, tail, 10 tons in internal organ etc. after the classification.
Get 3 tons of the interior fish tallows of above-mentioned channel catfishes body, fragmentation.
The preparation of 1-b, thick oil
Fish tallow after the fragmentation is carried out hot digestion, and temperature is controlled at 80 ℃, treat that most of fish oil boiling is come out after, change separator over to, be separated into leftover bits and pieces residue, water, fish slightly oil.Aqueous phase discarded, with the residue drying, pulverize fish meal.The fish that obtains 2.6 tons is slightly oily.
2, refining
2-a, alkali-refining deacidification
Adopt low temperature concentrated base deacidifying process.The thick oleic acid valency that records after step 1 is handled is 6.5mgKOH/g, normal temperature add down thick oil quality 3.8%, concentration is that the sodium hydroxide solution of 18 Baume degrees carries out alkali refining, recording thick oleic acid valency then is 1.2mgKOH/g, the salt water that adds 4% concentration of thick oil quality 5% leaves standstill, centrifugation goes out soap stock.
2-b, washing removal of impurities
Washing divides to be carried out for three times, and the salt water of 6% 5% concentration of preceding twice thick oil quality of usefulness is washed, and uses 5% hot water wash of thick oil quality at last, with except that the impurity in deoiling.
2-c, dehydration and decolorization, remove raw meat
Thick oil after the washing is put into the dehydration and decolorization pot, and intensification limit, limit vacuumizes, and absolute pressure is 0.012MPa, is warming up to 90 ℃, after 4 hours water and remaining soap stock foam is removed.
Add 0.07% active carbon of thick oil quality after the above-mentioned processing and 1% diatomite then, carry out tentatively removing raw meat, suck 7% Emathlite after five minutes, decolour, 88 ℃ of bleaching temperatures continue 1 hour, filter then.
2-d, depickling deodorizing
For edible, health care and medical oil, need further to reduce the acid value of fish oil and the odoring substance in the fish oil, carry out the depickling deodorizing.
With above-mentioned 2-c dehydration and decolorization, except that the fish oil after the raw meat processing drops into the deodorizing pot that the top is connected to water circulating vacuum pump and oil-sealed rotary pump, also be provided with atomising device in the deodorizing pot.Open water circulating vacuum pump earlier, when reaching-begin during 0.09MPa (absolute pressure is 0.01MPa), vacuum heats up, start tool vavuum pump when temperature reaches 110 ℃, when temperature rises to 140 ℃, the steam that feeds pressure 0.5MPa makes the atomizing of pot interior fish oil to fish oil, surface area increases, continuing to be warming up to 200 ℃, absolute pressure is 0.0025MPa, ceaselessly vacuumizes simultaneously.Be incubated cooling after 2 hours, close vacuum valve when temperature is reduced to 95 ℃, stop vavuum pump, continue to be cooled to 50 ℃, the deodorizing operation is finished.
Unnecessary free fatty and volatile materials are removed, and after testing, moisture and volatile matter content accounts for 0.092%, acid value is 0.74mgKOH/g, peroxide value is 4.4mmol/kg, and impurity is 0.06%, reaches one-level refined fish oil standard in the national marine industry standard (SC/T 3502-2000).
2-e, freezing degreasing
Because of spot fork-tail catfish oil viscosity is bigger, and contain certain saturated fatty acid, may become muddy during low temperature,, also need carry out freezing degreasing if will produce more high-grade and fish oil specification.
To place freezing pot through the fish oil of above-mentioned depickling deodorizing, and drive agitator earlier, and drive refrigerator again, chilled liquid temperature is controlled at 6 ℃, keeps 13 hours, has trace to separate out, and is continuing cooling filtration after 25 hours under this temperature.Fish oil after the filtration is limpid, does not have precipitate under low-temperature condition, and refraction index and quality are preferably arranged.
The spot fork-tail catfish oil weight that said process makes is 2.38 tons, includes 7.6% EPA, 6.8% DHA, 24.8% oleic acid, 7.6% linoleic acid, 3.5% leukotrienes, 1.9% C after testing
20:4With 19.7% C
16:1, content of fatty acid 71.9% is closed in total insatiable hunger, and this finished product fish oil is mainly as health-care medical fish oil.
Embodiment 2
1, the thick oil of channel catfish produces
1-a, raw material selection, classification, fragmentation
Get 2 tons of the interior fish tallows of above-mentioned channel catfishes body, fragmentation.
The preparation of 1-b, thick oil
Fish tallow after the fragmentation is carried out hot digestion, and temperature is controlled at 90 ℃, treat that most of fish oil boiling is come out after, change separator over to, be separated into residue, water, fish slightly oil.Aqueous phase discarded, with the residue drying, pulverize fish meal, and obtain 1.7 tons fish slightly oil.
2, refining
2-a, alkali-refining deacidification
The thick oleic acid valency that records after step 1 is handled is 7.2mgKOH/g, normal temperature add down thick oil quality 4.2%, concentration is that the sodium hydroxide solution of 18 Baume degrees carries out alkali refining, recording thick oleic acid valency then is 1.4mgKOH/g, the salt water that adds 5% concentration of thick oil quality 8% leaves standstill, centrifugation goes out soap stock.
2-b, washing removal of impurities
Washing divides to be carried out for three times, and the salt water of 8% 7% concentration of preceding twice thick oil quality of usefulness is washed, and uses 6% hot water wash of thick oil quality at last, with except that the impurity in deoiling.
2-c, dehydration and decolorization, remove raw meat
Thick oil after the washing is put into the dehydration and decolorization pot, and intensification limit, limit vacuumizes, and the maintenance absolute pressure is 0.014MPa, is warming up to 88 ℃, after 4 hours water and remaining soap stock foam is removed.
Add 0.07% active carbon of thick oil quality after the above-mentioned processing and 1% diatomite then, carry out tentatively removing raw meat, suck 7% Emathlite after five minutes, decolour, 90 ℃ of bleaching temperatures continue 50 minutes, filter then.
2-d, depickling deodorizing
Fish oil after the above-mentioned 2-c process processing is dropped into depickling deodorizing pot, and water circulating vacuum pump and oil-sealed rotary pump are inserted in the top of deodorizing pot, are provided with atomising device in the deodorizing pot.Open water circulating vacuum pump earlier, when reaching-begin during 0.085MPa, vacuum heats up, start tool vavuum pump when temperature reaches 90 ℃, when temperature rises to 160 ℃, the steam that feeds pressure 0.65MPa makes the atomizing of pot interior fish oil to fish oil, surface area increases, continuing to be warming up to 220 ℃, absolute pressure is 0.0045MPa, ceaselessly vacuumizes simultaneously.Be incubated cooling after 2 hours, close vacuum valve when temperature is reduced to 80 ℃, stop vavuum pump, continue to be cooled to 50 ℃, the deodorizing operation is finished.
Remove unnecessary free fatty and the fish oil behind the volatile materials after testing, moisture and volatile matter content accounts for 0.098%, and acid value is 0.7mgKOH/g, and peroxide value is 4.7mmol/kg, impurity is 0.06%, reaches one-level refined fish oil standard in the national marine industry standard (SC/T 3502-2000).
2-e, freezing degreasing
To place freezing pot through the fish oil of above-mentioned depickling deodorizing, cryogenic temperature is controlled at 4 ℃, keeps 14 hours, has micro-solid grease to separate out, and is continuing cooling filtration after 28 hours under this temperature.
The spot fork-tail catfish oil weight that said process makes is 1.47 tons, includes 5.9% EPA, 6.4% DHA, 25.4% oleic acid, 9.7% linoleic acid, 3.7% leukotrienes, 2.1% C after testing
20:4With 19.5% C
16:1, content of fatty acid 72.7% is closed in total insatiable hunger, and EPA, DHA total content are more than 10%, and this finished product fish oil is mainly as health-care medical fish oil.
Embodiment 3
1, the thick oil of channel catfish produces
1-a, raw material selection, classification, fragmentation
Get 5 tons of the parts such as head, fin, tail of sorted leftover bits and pieces among the embodiment 1, fragmentation.
The preparation of 1-b, thick oil
Leftover bits and pieces after the fragmentation is carried out hot digestion, and temperature is controlled at 160 ℃, treat that most of fish oil boiling is come out after, change separator over to and separate, obtain residue, water, fish slightly oil.Aqueous phase discarded, with leftover bits and pieces residue drying, pulverize fish meal, obtain simultaneously 1.6 tons fish slightly oil.
2, refining
2-a, alkali-refining deacidification
The thick oleic acid valency that records after step 1 is handled is 8.2mgKOH/g, add thick oil quality 5.7%, concentration is that the sodium hydroxide solution of 15 Baume degrees carries out alkali refining, recording thick oleic acid valency then is 2.8mgKOH/g, the salt water that adds 4% concentration of thick oil quality 5% leaves standstill, centrifugation goes out soap stock.
2-b, washing removal of impurities
Washing divides to be carried out for three times, and the salt water of 6% concentration of preceding twice thick oil quality 8% of usefulness channel catfish is washed, and uses 6% hot water wash of thick oil quality at last, to remove the impurity in deoiling.
2-c, dehydration and decolorization, remove raw meat
Thick oil after the washing is put into the dehydration and decolorization pot, and intensification limit, limit vacuumizes, and absolute pressure is 0.013MPa, is warming up to 93 ℃, after 4 hours water and remaining soap stock foam is removed.
Add 0.07% active carbon of thick oil quality after the above-mentioned processing and about 1% diatomite then and carry out tentatively removing raw meat, suck about 7% Emathlite after five minutes and decolour, 95 ℃ of bleaching temperatures continue 1.2 hours, filter then.
2-d, depickling deodorizing
Fish oil after the above-mentioned 2-c process processing is dropped into the deodorizing pot that the top is connected to water circulating vacuum pump and oil-sealed rotary pump, also be provided with atomising device in the deodorizing pot.Open water circulating vacuum pump earlier, when reaching-begin during 0.086MPa, vacuum heats up, start tool vavuum pump when temperature reaches 100 ℃, when temperature rises to 150 ℃, the steam that feeds pressure 0.45MPa is to fish oil, continuing to be warming up to 220 ℃, absolute pressure is 0.002MPa, and ceaselessly vacuumizes.Be incubated cooling after 2 hours, close vacuum valve when temperature is reduced to 90 ℃, stop vavuum pump, continue to be cooled to 50 ℃, the deodorizing operation is finished.
The fish oil that makes through above-mentioned processing step has 1.3 tons, after testing, moisture and volatile matter content accounts for 0.16%, acid value is 1.5mgKOH/g, peroxide value is 5.2mmol/kg, impurity is 0.08%, meets secondary refined fish oil standard in the national marine industry standard (SC/T 3502-2000), detects 4.8% EPA, 3.7% DHA, 18.3% oleic acid, 5.4% linoleic acid, 1.3% C simultaneously
20:4, can be used as edible fish oil or be used for food processing.
Embodiment 4
1, the thick oil of channel catfish produces
1-a, raw material selection, classification, fragmentation
Get among the embodiment 15 tons of sorted leftover bits and pieces internal organ parts, fragmentation.
The preparation of 1-b, thick oil
With the internal organ hot digestion after the fragmentation, temperature is controlled at 140 ℃, treat that most of fish oil boiling is come out after, change separator over to and separate, obtain residue, water, fish slightly oil.Aqueous phase discarded, with leftover bits and pieces residue drying, pulverize fish meal, obtain simultaneously 2.3 tons fish slightly oil.
2, refining
2-a, alkali-refining deacidification
The thick oleic acid valency that records after step 1 is handled is 8.5mgKOH/g, add thick oil quality 5.9%, concentration is that the sodium hydroxide solution of 15 Baume degrees carries out alkali refining, recording thick oleic acid valency then is 2.8mgKOH/g, the salt water that adds 4% concentration of thick oil quality 5% leaves standstill, centrifugation goes out soap stock.
2-b, washing removal of impurities
Washing divides to be carried out for three times, and the salt water of 6% concentration of preceding twice thick oil quality 8% of usefulness channel catfish is washed, and uses 6% hot water wash of thick oil quality at last, to remove the impurity in deoiling.
2-c, dehydration and decolorization, remove raw meat
Thick oil after the washing is put into the dehydration and decolorization pot, and intensification limit, limit vacuumizes, and absolute pressure is 0.012MPa, is warming up to 94 ℃, after 4 hours water and remaining soap stock foam is removed.
Add 0.07% active carbon of thick oil quality after the above-mentioned processing and about 1% diatomite then and carry out tentatively removing raw meat, suck about 7% Emathlite after five minutes and decolour, about 95 ℃ of bleaching temperature continues about 1.2 hours, filters then.Obtain 1.97 tons of fish oil after the filtration, detect through sampling, wherein moisture and volatile matter content accounts for 0.36%, acid value is 4.5mgKOH/g, and peroxide value is 5.8mmol/kg, and impurity is 0.2%, meet national marine industry standard (SC/T 3502-2000) crude fish oil standard, can be used as the feed product oil.
From the channel catfishes leftover bits and pieces, refine fish oil, opened up the frontier of fish oil, and turned waste into wealth, promoted the economic worth of channel catfishes greatly.
Claims (6)
1. the preparation method of a spot fork-tail catfish oil comprises following step:
(1) the thick oil of channel catfish produces, comprise selection, classification, the fragmentation of (1-a) leftovers of ictalurus punctatus, leftover bits and pieces is divided three classes, and a class is the fish tallow in the channel catfish body, one class is parts such as the head, fin, tail of channel catfish, and also having a class is the internal organ of channel catfish; (1-b) separate after most of fish oil boiling is come out carrying out boiling after the above-mentioned classification fragmentation, aqueous phase discarded, residue obtain thick oil;
(2) will go up the thick oil that step produces and make with extra care, comprise: (2-a) alkali-refining deacidification, adopt the low temperature concentrated base to carry out alkali-refining deacidification, add salt water, leave standstill, centrifugation goes out soap stock; (2-b), washing removal of impurities; (2-c) dehydration and decolorization removes raw meat.
2. the preparation method of spot fork-tail catfish oil according to claim 1, it is characterized in that: described purification step also comprises following step: (2-d) depickling deodorizing, fish oil after the said process processing is placed the deodorizing pot, begin when being vacuum-drawn against absolute pressure to heat up for 0.01-0.02MPa, when being warming up to 140-160 ℃, feeding pressure is that the steam of 0.4-0.7MPa makes the fish oil atomizing, and continue to be warming up to 180-280 ℃, absolute pressure is 0.0025--0.004MPa, ceaselessly vacuumize simultaneously, be incubated cooling after 2-4 hour, stop vavuum pump when temperature is reduced to 70--95 ℃, continue to be cooled to 30--50 ℃.
3. the preparation method of spot fork-tail catfish oil according to claim 2, it is characterized in that: described deodorizing pot top is connected to water circulating vacuum pump and oil-sealed rotary pump, also is provided with atomising device in the deodorizing pot.
4. the preparation method of spot fork-tail catfish oil according to claim 3, it is characterized in that: the described water circulating vacuum pump of opening earlier, when absolute pressure begins during for 0.01MPa to heat up, start tool vavuum pump when temperature reaches 110 ℃, when temperature rises to 140 ℃, feed the steam of pressure 0.5MPa in the fish oil, make the fish oil atomizing, continuing to be warming up to 200 ℃, absolute pressure is 0.0025MPa, ceaselessly vacuumizes simultaneously; Be incubated cooling after 2 hours, close vacuum valve when temperature is reduced to 95 ℃, stop vavuum pump, continue to be cooled to 50 ℃.
5. the preparation method of spot fork-tail catfish oil according to claim 2, it is characterized in that: the refining of described fish oil also comprises: (2-e) freezing degreasing, to place freezing pot through the fish oil of aforementioned (2-d) depickling deodorizing, temperature is controlled at 0--6 ℃, up to micro-precipitate occurring, after continuing freezing and keeping more than 25 hours, filter again, promptly obtain high-quality fish oil.
6. the spot fork-tail catfish oil that makes according to the described method of claim 2 is characterized in that: this fish oil includes the oleic acid, the linoleic acid of 7-11%, the leukotrienes of 3-6%, the C of 1-5% of DHA, 20-27% of EPA, the 5-12% of 6-10%
20:4C with 15-22%
16:1, total insatiable hunger is closed content of fatty acid and is higher than 70%.
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| WO2012006934A1 (en) * | 2010-07-12 | 2012-01-19 | 深圳精益油脂技术有限公司 | Pangasianodon gigas oil, use thereof, and method of preparing human milk fat substitute |
| CN101940242B (en) * | 2010-07-12 | 2013-05-15 | 深圳精益油脂技术有限公司 | Grease composition of infant formula food |
| CN107400559A (en) * | 2017-08-10 | 2017-11-28 | 福建海富特生物科技股份有限公司 | A kind of method in semi continuous feed fish oil refinery practice addition antioxidant |
| CN109588692A (en) * | 2018-12-29 | 2019-04-09 | 安徽富煌三珍食品集团有限公司 | A kind of preparation method of natural flavouring nutrient and flavour sauce |
| CN110317672A (en) * | 2019-08-02 | 2019-10-11 | 重庆市三品功能食品研究院有限公司 | A method of fish oil is prepared from rainbow trout fish fats |
| CN110904166A (en) * | 2019-12-11 | 2020-03-24 | 付俊 | Method for extracting brain gold from giant salamander |
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| CN101181079B (en) | 2012-08-22 |
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