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Method for extracting crude fish oil from hairtail silvery fat

A technology for hairtail and crude fish, which is applied in the production of fat oil/fat and fat production, can solve the problems of destroying the original components, low extraction rate of crude fish oil, etc., and achieves the effects of easy parameter control, mild conditions and little pollution.

Inactive Publication Date: 2013-01-23
NINGBO LANYANG AQUATIC FOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional fish oil production methods include pressing method, solvent method, etc. The raw materials used in these methods are hairtail processing leftovers or hairtail viscera, but this kind of method not only has a low extraction rate of crude fish oil, but also destroys its original components

Method used

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  • Method for extracting crude fish oil from hairtail silvery fat
  • Method for extracting crude fish oil from hairtail silvery fat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1, a kind of method that extracts crude fish oil from hairtail silver fat, carries out following steps successively:

[0041] 1) Add 15ml of water to 15g of hairtail silver fat, then add 0.3g of neutral protease, and enzymolyze at 45°C for 2.5 hours;

[0042] 2) Use a hydrochloric acid solution with a concentration of 0.1 mol / L to adjust the pH of the enzymolysis solution obtained in step 1) to 4, so as to realize the inactivation treatment of neutral protease; then add 60ml of petroleum ether and incubate at 40°C Extract for 30min;

[0043] 3) Rotary evaporation (at 58~62°C) of the petroleum ether extract in the upper layer obtained in step 2) to volatilize the petroleum ether and obtain crude fish oil containing impurities;

[0044] 4) Centrifuge the crude fish oil containing impurities at 3000 r / min for 10 minutes, separate the obtained supernatant, and the supernatant is crude fish oil.

[0045] 3.615 g of crude fish oil was obtained, with a yield of 24...

Embodiment 2

[0047] Embodiment 2, a kind of method that extracts crude fish oil from hairtail silver fat, carries out following steps successively:

[0048] 1) Add 15ml of water to 15g of hairtail silver fat, then add 0.45g of neutral protease, and enzymolyze at 50°C for 3 hours;

[0049] 2) Use a hydrochloric acid solution with a concentration of 0.1 mol / L to adjust the pH of the enzymolysis solution obtained in step 1) to 4, so as to realize the inactivation treatment of neutral protease; then add 60ml of petroleum ether and incubate at 40°C Extract for 30min;

[0050] 3) Rotary evaporation (at 58~62°C) of the petroleum ether extract in the upper layer obtained in step 2) to volatilize the petroleum ether and obtain crude fish oil containing impurities;

[0051] 4) Centrifuge the crude fish oil containing impurities at 3000 r / min for 10 minutes, separate the obtained supernatant, and the supernatant is crude fish oil.

[0052] Obtain 4.44g of crude fish oil, yield 29.6%.

[0053]In th...

Embodiment 3

[0054] Embodiment 3, a kind of method that extracts crude fish oil from hairtail silver fat, carries out following steps successively:

[0055] 1) Add 30ml of water to 15g of hairtail silver fat, then add 0.3g of neutral protease, and enzymolyze at 45°C for 3 hours;

[0056] 2) Use a hydrochloric acid solution with a concentration of 0.1 mol / L to adjust the pH of the enzymolysis solution obtained in step 1) to 4, so as to realize the inactivation treatment of neutral protease; then add 60ml of petroleum ether and incubate at 40°C Extract for 30min;

[0057] 3) Rotary evaporation (at 58~62°C) of the petroleum ether extract in the upper layer obtained in step 2) to volatilize the petroleum ether and obtain crude fish oil containing impurities;

[0058] 4) Centrifuge the crude fish oil containing impurities at 3000 r / min for 10 minutes, separate the obtained supernatant, and the supernatant is crude fish oil.

[0059] 3.66g of crude fish oil was obtained, with a yield of 24.4%....

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Abstract

The invention discloses a method for extracting crude fish oil from hairtail silvery fat, which comprises the following steps: 1) adding water to the hairtail silvery fat; adding neutral protease again; processing enzyme for 2.5-3.5 hours at 45-52 degrees centigrade; 2) processing inactivation treatment of the neutral protease to acquired enzyme solution, adding petroleum ether, processing extraction for 25-35 minutes in warm bath at 38-42 degrees centigrade; 3) rotating and evaporating the petroleum ether located on an upper layer obtained in the step 2) so as to ventilate the petroleum ether, and acquiring the crude fish oil containing impurity; and 4) centrifuging the crude fish oil containing the impurity, separating acquired supernatant, wherein the supernatant is the crude fish oil. By dint of the invention, the crush fish oil with relatively high concentration can be acquired.

Description

technical field [0001] The invention relates to a method for extracting crude fish oil from residual silver fat in hairtail processing. Background technique [0002] With the development and research of marine food, the functional components of fish oil have attracted more and more people's attention. Fish oil is widely used, such as health care, medicine, food, etc. The world's fish oil production is large, but at present, the domestic production of fish oil in my country is relatively low. . Hairtail is rich in resources, but currently hairtail is mainly used for the processing of fish meat products, and a lot of leftovers will be produced during the processing. These leftovers have low added value, and the fish oil contained in them has not exerted a good effect. In addition, the fat components in the leftovers are rich in polyunsaturated fatty acids, which are prone to oxidative rancidity. If these leftovers are not processed in time, it will not only cause waste of res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/00C11B1/10
Inventor 兰和祥周旭静
Owner NINGBO LANYANG AQUATIC FOOD
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