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Method for extracting polypeptide and amino acid from waste beer yeast

A technology for beer waste yeast and amino acids, which is applied in the fields of fermentation, animal feed, animal husbandry, etc., can solve the problems of indigestion and absorption, low economic benefits, environmental pollution, etc. effect of intake

Active Publication Date: 2013-09-18
成都天屹生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional processing method is to discard or treat as feed, but because of its tough cell wall and unique yeast smell, poor palatability, difficult to digest and absorb, the economic benefit of drying as feed is not high
If it is discharged directly, it will be regarded as environmental pollution, and it is also a waste of wealth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for extracting polypeptides and amino acids from spent beer yeast, comprising the following steps in sequence:

[0030] Step 1: Beer waste yeast powder is pretreated: sieve and wash the beer waste yeast powder to prepare yeast suspension;

[0031] Step 2: high-pressure homogenization treatment: homogenize the pretreated yeast suspension;

[0032] Step 3: first extraction: extracting the homogenized yeast solution;

[0033] Step 4: enzymatic hydrolysis: use the compound protease preparation to enzymolyze the yeast solution after the first extraction;

[0034] Step 5: the second extraction: extract the yeast solution after enzymolysis;

[0035] Step 6: After the yeast solution extracted for the second time is inactivated and separated by pressure filtration, it is spray-dried to obtain yeast polypeptide and amino acid powder.

[0036] The further technical solution is that the pretreatment specifically includes: first pass the waste beer yeast powder through a...

Embodiment 2

[0046] A method for extracting polypeptides and amino acids from spent beer yeast, comprising the following steps in sequence:

[0047] Step 1: Beer waste yeast powder is pretreated: sieve and wash the beer waste yeast powder to prepare yeast suspension;

[0048] Step 2: high-pressure homogenization treatment: homogenize the pretreated yeast suspension;

[0049] Step 3: first extraction: extracting the homogenized yeast solution;

[0050] Step 4: enzymatic hydrolysis: use the compound protease preparation to enzymolyze the yeast solution after the first extraction;

[0051] Step 5: the second extraction: extract the yeast solution after enzymolysis;

[0052] Step 6: After the yeast solution extracted for the second time is inactivated and separated by pressure filtration, it is spray-dried to obtain yeast polypeptide and amino acid powder.

[0053] A further technical solution is that the pretreatment is specifically as follows: first pass the waste beer yeast powder throug...

Embodiment 3

[0063] A method for extracting polypeptides and amino acids from spent beer yeast, comprising the following steps in sequence:

[0064] Step 1: Beer waste yeast powder is pretreated: sieve and wash the beer waste yeast powder to prepare yeast suspension;

[0065] Step 2: high-pressure homogenization treatment: homogenize the pretreated yeast suspension;

[0066] Step 3: first extraction: extracting the homogenized yeast solution;

[0067] Step 4: enzymatic hydrolysis: use the compound protease preparation to enzymolyze the yeast solution after the first extraction;

[0068] Step 5: the second extraction: extract the yeast solution after enzymolysis;

[0069] Step 6: After the yeast solution extracted for the second time is inactivated and separated by pressure filtration, it is spray-dried to obtain yeast polypeptide and amino acid powder.

[0070] A further technical solution is that the pretreatment specifically includes: first pass the waste beer yeast powder through a 1...

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PUM

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Abstract

The invention discloses a method for extracting polypeptide and amino acid from waste beer yeast. The waste beer yeast is atomized and dried to obtain polypeptide and amino acid powder after pretreatment, high pressure homogeneity treatment, first extraction, enzymolysis, second extraction, enzyme extinguishment, press filter and separation. The method uses waste beer yeast which is byproducts for producing beer in breweries as raw materials to extract polypeptide and amino acid powder, thereby reducing pollution, achieving secondary transform of resources and generating great economic benefits. The method firstly uses high pressure homogeneity, then two extraction and composite protein enzyme enzymolysis, thereby increasing permeability of cell walls of yeast and improving dissolving rate of protein and amino acid in yeast cells, further improved obtaining rate of yeast extractives and increasing yeast protein content. The polypeptide and the amino acid extracted from the waste beer yeast in the method can serve as additives of function feed and food.

Description

technical field [0001] The invention relates to a method for extracting polypeptides and amino acids, in particular to a method for extracting polypeptides and amino acids from beer waste yeast. Background technique [0002] Beer yeast is rich in protein. The protein content of dry yeast is about 50%. It is composed of more than 18 kinds of common amino acids. The amino acid composition is reasonable and rich in 8 kinds of amino acids necessary for the human body, especially lysine, which has less protein content in grains. High acid content. The content and composition of protein in brewer's yeast remain basically unchanged. Except for a small amount of methionine, the other content is almost the same as that of animal muscle protein and milk protein, and the amino acid composition is also similar. The ratio of amino acid composition in brewer's yeast is close to the ideal amino acid composition recommended by the Food and Agriculture Organization of the United Nations. C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P21/06A23K10/38A23L27/21
CPCY02P60/87
Inventor 郝刚
Owner 成都天屹生物科技有限公司
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