Process engineering for extracting fishes processing offal fish oil by enzymolysis process

A process technology and leftover technology, which is applied in the field of extracting fish oil from fish processing leftovers by enzymatic hydrolysis, can solve problems such as the decline of fish resources and the increase in fish oil imports, and achieve good fish oil quality, improved utilization rate, and mild reaction process Effect

Inactive Publication Date: 2008-08-27
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fact that the quality of domestically produced fish oil cannot meet the demand for raw materials for health care products and the large decline in the resources of the main raw material of domestically produced fish oil, the import of fish oil has increased significantly in recent years.

Method used

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Examples

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Embodiment Construction

[0020] The present invention is further described in conjunction with implementation process example:

[0021] 1. After thawing and cleaning the tuna head, boil it in water at 80-90°C for 10-15 minutes in a storage tank with interlayer to separate the flesh from the flesh. Manually separate the edible parts such as meat from the bones, grind them through a meat grinder, and enzymolyze them in a reaction kettle with a stirrer according to the following conditions: temperature 50°C, weight ratio of meat to water 1:2, pH 6.8 , Neutral protease 1400IU / g raw material, papain 1100IU / g raw material, add 2 kinds of enzymes at the same time, hydrolyze for 2.5 hours, after the hydrolysis is completed, heat up to 85-90°C to inactivate the enzyme for 10 minutes, and the hydrolyzate is filtered through a three-legged centrifuge Finally, the filtrate is separated from oil and water by a tubular centrifuge. The oil phase is degummed by adding 80% phosphoric acid with 1% oil volume, 30% sodiu...

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PUM

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Abstract

A process technology using enzymolysis method to extract leftover fish oil from fish processing comprises the following steps: preliminary treatment, in which the leftovers from the fish processing are cleaned and minced; protease hydrolysis, in which neutral protease and papain are hydrolyzed simultaneously; oil-water separation, in which hydrolysate is centrifugally filtered to remove residues, and filtrate undergoes oil-water separation via a centrifuge, thereby obtaining the fish oil and hydrolyzed protein; and fish oil refinement, in which refined fish oil can be obtained after the fish oil is degummed, depickled, decolored and deodorized. The leftovers from the fish processing can be hydrolyzed with the proteases to destroy the associative relation of protein and fat, thereby releasing axunge which undergoes oil-water separation by the tubular centrifuge to obtain the fish oil with high quality, and meanwhile, the protein therein can be fully utilized to produce hydrolyzed protein, so as to change wastes into valuables and synthetically and efficiently utilize the resources of the fish and the processing leftovers.

Description

technical field [0001] The invention relates to the field of biotechnology application and comprehensive utilization of fish resources, in particular to a technology for extracting fish oil from fish processing waste by enzymatic hydrolysis. Background technique [0002] In the process of fish processing, especially fish fillet processing, a large amount of leftovers will be produced. Tuna, known as "ocean gold", is mainly processed as sashimi and canned fish. The leftovers produced by processing account for about 10% of the total weight 50% to 70% of tilapia; my country is a big tilapia breeding country, accounting for 69% of the world's tilapia production in 2005. Frozen tilapia fillets are the main products of tilapia exported from my country, and every 1 ton of tilapia fillets processed , About 2 tons of leftovers will be produced. The leftovers of fish processing include fish heads, viscera, fish rafts, gills, etc. These leftovers contain a large amount of protein, fat a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23D9/02A23L1/30A23L1/29A23L1/28A23L33/115A23L33/18
Inventor 杨萍洪鹏志刘书成章超桦吉宏武郝记明张静
Owner GUANGDONG OCEAN UNIVERSITY
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