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Fish protein oligopeptide for lefteye flounder

A technology of fish protein and flounder, which is applied in the field of compound feed additives for seawater fish, can solve the problems of slow growth and poor palatability, and achieve the effects of promoting growth, improving palatability, and rich resources

Inactive Publication Date: 2010-06-02
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the compound feed for flounder mainly uses hard pellet feed and extruded feed, which have problems such as poor palatability and slow growth rate.

Method used

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  • Fish protein oligopeptide for lefteye flounder
  • Fish protein oligopeptide for lefteye flounder
  • Fish protein oligopeptide for lefteye flounder

Examples

Experimental program
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Embodiment Construction

[0012] This specific embodiment adopts the following technical solutions:

[0013] Production of fish protein oligopeptides: freshly frozen Pacific pollock leftovers are minced by a meat grinder and then put into an enzyme reactor, heated to 95°C and kept at 10°C for min to sterilize, then mixed with water and protease, the ratio of material to water is 1 : 1, using Alcalase enzyme E / S=90AU+Flavourzyme enzyme E / S=15000LAPU compound enzyme enzymatic hydrolysis method, enzymatic hydrolysis temperature 55°C, initial pH=8.5, enzymatic hydrolysis for 3 hours, and then the enzymatic hydrolysis solution is heated to inactivate the protease , coarse filtration to separate bone spurs, and further three-phase centrifugation of the enzymatic solution to obtain soluble protein oligopeptide aqueous phase, insoluble protein precipitate and fish oil respectively. Part of the soluble protein oligopeptide aqueous phase is purified by 1K ultrafiltration membrane ultrafiltration and spray dried ...

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PUM

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Abstract

The invention relates to fish protein oligopeptide for lefteye flounder, which is a compound feed additive for marine fish. The fish protein oligopeptide is made of wastes of codfish and is added into feed for lefteye flounder in a certain proportion to substitute protein in the feed, thereby enhancing the growth and survival rate of the lefteye flounder and the protein deposition and feed conversion rate, wherein the molecular weight of the fish protein oligopeptide is not more than 1000Da (not less than 85 percent). In addition, The fish protein oligopeptide with the optimal additive amount being 3.7 percent can obviously enhance the growth rate of lefteye flounder and the feed efficiency, increase the net utilization and deposition of protein and obviously enhance the protein contain of fish bodies.

Description

Technical field: [0001] The invention belongs to a compound feed additive for seawater fish, and is a growth-promoting agent for promoting the growth of flounder. Background technique: [0002] For a long time, due to the widespread use of growth-promoting health-care agents such as antibiotics, chemically synthesized drugs, and hormones in aquaculture and aquatic feed, drug residues in aquatic products are serious, which not only directly endangers human health, but also reduces the quality of aquatic products, resulting in a lack of market competitiveness and reputation; Bacterial drug resistance is enhanced, drug-resistant strains increase, and the ecological environment is destroyed. As the export of eel, shrimp and other aquatic products has been blocked, consumers are increasingly concerned about food safety, hygiene, health and other issues, and their requirements for the quality of aquatic products are getting higher and higher. It is imminent to accelerate the deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/16A23K1/10A23K20/147A23K50/80
Inventor 常青梁萌青郑珂珂方伟姚洪波
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI