A kind of production method of low-salt oyster polypeptide and oligosaccharide nutrition powder

Abstract

The invention discloses a production method of a low-salt oyster polypeptide and oligosaccharide nutrition powder. According to the production method, oyster obtained via shell removing is taken as a raw material, is repeatedly immersed in ice water at 4 to 10 DEG C for 2 to 4h; the oyster obtained via immersion desalting is subjected to slurry homogenizing, and is subjected to high temperature treatment for disinfection and protein denaturation; obtained oyster slurry is cooled with normal temperature water; pH value is adjusted to be 7.0 to 9.0, and 0.5 to 1.0wt% of protease is added for protein enzymatic hydrolysis; after high pH protease enzymatic hydrolysis, the temperature is adjusted, and 0.5 to 1% of a weakly acidic protease is added for enzymatic hydrolysis; amylase is added for degradation of glycogen; an obtained product is subjected to high temperature treatment, filtering, and spray drying so as to obtain the oyster polypeptide and oligosaccharide nutrition powder. The production method is simple; cost is low; and the obtained oyster polypeptide and oligosaccharide nutrition powder can be absorbed by human body easily.

Description

technical field [0001] The invention relates to the field of aquatic product processing, in particular to a method for producing low-salt oyster polypeptide and oligosaccharide nutritional powder. Background technique [0002] Oyster (Oyster, Crassostrea gigas ), also known as oysters and oysters, is one of the famous economically cultured shellfish in my country. It is known as "the brown rice of the sea" and "the source of the root" in Japan, and "the milk of the sea" and "the fruit of the sea" in the West. . The protein content in oysters is as high as 45% to 57%, the amino acid content is perfect, and the completeness and quality ratio of essential amino acids are better than human milk and cow milk. The sugar contained in oysters is as high as 20% to 40%, which has anti-fatigue, improves human heart and blood circulation functions, and has liver protection effects. Zinc, calcium, iron, phosphorus and other trace elements, vitamin B in oysters 2 Taurine and taurine ar...

AI Technical Summary

Problems solved by technology

[0005] (1) Oysters that grow in the ocean contain a certain amount of salt, and are prepared into polypeptide products without treatment. The salt content exceeds the acceptable range for general use, resulting in certain restrictions on the use of the obtained products

The use of membrane desalination will not only increase the cost, but also complicate the process

[0006] (2) Due to the growth environment and other reasons, oysters often contain certain bacteria, and heat treatment in the later stage of enzymatic hydrolysis can achieve a certain sterilization effect, but it is difficult to achieve the desired effect, which has a certain impact on the quality of the product

[0007] (3) Most studies mainly use a single protease for enzymatic hydrolysis of proteins, and proteases generally have certain enzymatic cleavage sites, which have certain restrictions on the degradation of substrates. When compound enzymes are used for simultaneous enzymatic hydrolysis, May cause several proteases to degrade each other and reduce protease activity

[0008] (4) Most of these patents use oyster powder as raw material instead of directly using fresh oysters. The purpose of the research is only to use the protein component or single polysaccharide component in oysters, and the value of oysters has not been fully utilized

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