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Method for preparing fish oil by virtue of leftovers of tuna

A technology for leftovers and tuna, applied in the direction of fat oil/fat production, fat production, etc., can solve the problems of insufficient utilization of tuna leftovers, destruction of active ingredients, large energy consumption, etc. quick response

Active Publication Date: 2013-04-24
ZHEJIANG MARINE DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing fish oil by using tuna leftovers in order to solve the problem of insufficient utilization of tuna leftovers at present; at the same time, in order to solve the problem that the active ingredients in the existing fish oil preparation process are destroyed and the content is low, the energy Consumption and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of method utilizing tuna leftovers to prepare fish oil, concrete steps are:

[0026] (1) Raw material processing: remove impurities from tuna leftovers, wash them, and then crush them to obtain blanks;

[0027] (2) Preparation of immobilized lipase: use polymethyl acrylate carrier to immobilize Candida cylindrica lipase to obtain immobilized lipase;

[0028] (3) Preliminary enzymolysis: put the billet into the enzymolysis tank, add water according to the weight ratio of billet: water = 1:2, add sodium chloride solution with a salinity of 22° to the enzymolysis tank to adjust the material in the enzymolysis tank The salinity of the liquid is 6°, and the pH of the feed liquid is controlled to be 5, then immobilized lipase is added to the enzymolysis tank, the temperature of the feed liquid is controlled at 40°C, the salinity is 4.5°, the pH is 5, and the temperature is kept for 5 hours; finally Raise the temperature to 95°C, keep it warm for 20 minutes, and filter...

Embodiment 2

[0032] A kind of method utilizing tuna leftovers to prepare fish oil, concrete steps are:

[0033] (1) Raw material processing: remove impurities from tuna leftovers, wash them, and then crush them to obtain billets;

[0034] (2) Preparation of immobilized lipase: use polymethyl acrylate carrier to immobilize Candida cylindrica lipase to obtain immobilized lipase;

[0035] (3) Preliminary enzymolysis: put the billet into the enzymolysis tank, add water according to the weight ratio of billet: water = 1:3, add sodium chloride solution with a salinity of 24° to the enzymolysis tank to adjust the material in the enzymolysis tank The salinity of the liquid is 5°, and the pH of the feed liquid is controlled to be 5.5, then immobilized lipase is added to the enzymolysis tank, the temperature of the feed liquid is controlled at 45°C, the salinity is 4°, the pH is 5.5, and the temperature is kept for 8 hours; finally Raise the temperature to 85°C, keep it warm for 22 minutes, and fil...

Embodiment 3

[0039] A kind of method utilizing tuna leftovers to prepare fish oil, concrete steps are:

[0040](1) Raw material processing: remove impurities from tuna leftovers, wash them, and then crush them to obtain blanks;

[0041] (2) Preparation of immobilized lipase: use polymethyl acrylate carrier to immobilize Candida cylindrica lipase to obtain immobilized lipase;

[0042] (3) Preliminary enzymolysis: put the billet into the enzymolysis tank, add water according to the weight ratio of billet: water = 1:4, add sodium chloride solution with a salinity of 21° to the enzymolysis tank to adjust the material in the enzymolysis tank The salinity of the liquid is 5.5°, and the pH of the feed liquid is controlled to be 6, then immobilized lipase is added to the enzymolysis tank, the temperature of the feed liquid is controlled at 35°C, the salinity is 4.3°, the pH is 6, and the temperature is kept for 3 hours; finally Raise the temperature to 90°C, keep it warm for 25 minutes, and filte...

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Abstract

The invention relates to the technical field of aquatic product processing, and particularly relates to a method for preparing fish oil by virtue of the leftovers of tuna. The specific scheme disclosed by the invention is as follows: the method comprises the following steps of: removing impurities from the leftovers of tuna and cleaning, and then crushing to obtain a feedstock; then performing primary enzymolysis on the feedstock by virtue of immobilized lipase, then performing secondary enzymolysis, filtering the obtained secondary enzymolysis solution to remove residue, performing centrifugal treatment, and separating to obtain lower-layer emulsion and upper-layer crude fish oil; and demulsifying the lower-layer emulsion, and forming the tuna fish oil with the upper-layer crude fish oil. According to the technical scheme disclosed by the invention, the fish oil is prepared by virtue of the leftovers of tuna; and the fish oil is high in extraction rate, complete in active ingredients and high in content, and the method is low in energy consumption and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of aquatic product processing, in particular to a method for preparing fish oil from tuna leftovers. Background technique [0002] Tuna is a large pelagic important commercial food fish. Because tuna must keep swimming fast to maintain the supply of the body, and it only moves in the deep sea, so the meat is tender and delicious, and it is not polluted by the environment. It is a rare healthy delicacy for modern people. The processing of tuna has also become an important industry, but there are a series of major problems in the process of tuna processing, such as difficult quality control, low utilization of leftovers, high production energy consumption, and serious loss of raw materials, resulting in relatively large economic losses for enterprises. Therefore, the utilization of leftovers produced in the tuna processing process can increase operating income and realize economic value. The application of f...

Claims

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Application Information

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IPC IPC(8): C11B1/02C11B1/00
Inventor 杨会成郑斌陈孟周宇芳廖妙飞钟明杰
Owner ZHEJIANG MARINE DEV RES INST
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