Selenium yeast hydrolyzate and its preparation method and application

Abstract

The invention relates to a selenium yeast hydrolyzate and its preparation method and application. The selenium yeast hydrolyzate of the present invention contains protein, amino acid nitrogen, acid-soluble protein and selenomethionine, wherein the content of amino acid nitrogen is 2-3wt%, and the content of acid-soluble protein is 35-45wt%. Add citric acid to the selenium yeast milk for autolysis treatment and enzymolysis treatment, and the enzymes added in the enzymolysis treatment include papain, neutral protease, alkaline protease and flavor protease. The product of the invention is easy to be produced on a large scale, and the selenium yeast hydrolyzate prepared by the method of the invention has a high content of functional components, and the absorption rate of the selenium element in animals is greatly increased, and can be used as a feed product additive.

Description

technical field

[0001] The invention relates to a preparation method and a product of a selenium yeast hydrolyzate, belonging to the technical fields of yeast selenium production and biological enzymolysis. Background technique

[0002] Selenium is an indispensable trace element in animal physiology. As a stimulator of animal immune system, it can promote antibody production, strengthen animal immune system and anti-infection ability, and improve animal reproductive performance. Selenium deficiency can lead to decreased sperm count and motility and increased sperm deformity rate in male animals. At present, selenium added in the field of feed exists in two forms: inorganic selenium and organic selenium. Inorganic selenium mainly uses inorganic compounds such as sodium selenite as selenium sources. Such products have low absorption rate and high toxicity. To achieve the desired effect, it also has a great destructive effect on the environment and a potential threat to animal...

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