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Method for co-producing epsilon-polylysine and protein feed using byproducts of corns

A corn by-product, polylysine technology, applied in animal feed, animal feed, plant protein processing and other directions, can solve the problem of low utilization rate of corn by-products, and achieve the effects of extensive fermentation conditions, short cycle and quick effect.

Active Publication Date: 2015-11-04
SHANDONG XIWANG SUGAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for simultaneously producing ε-polylysine and protein feed by using corn by-products for the extremely low utilization rate of corn by-products. The method uses corn bran, germ meal, corn steep liquor, glucose The integration of mother liquor can not only effectively utilize the carbon source and nitrogen source in the by-products, but also increase the protein content of corn bran and germ meal, which can be used in large-scale production and provides an effective way for enterprises to solve the problem of corn by-products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Take 1 kg of corn bran, add 3 kg of water, then the moisture content of the material is 75%; take 1 kg of germ meal, add 3 kg of water,

[0024] The moisture content of the material is 75%;

[0025] (2) Add 1.5 g of amylase and 1.5 g of cellulase to the two materials respectively, that is, the amount of enzyme added is 0.15% of the dry basis of the material.

[0026] After stirring evenly, put the material into an oven at 50°C for 24 h;

[0027] (3) Take out the materials of corn husk and germ meal, wrap them with three layers of gauze respectively, squeeze them hard for solid-liquid separation, and obtain

[0028] Obtain filtrate and filter residue. The corn husk material can obtain 1.5 kg of filtrate and 2.5 kg of filter residue; the germ meal material can obtain 1.8 kg of filtrate and 2.2 kg of filter residue;

[0029] (4) Add 3 kg of water to the corn husk filter residue, mix well and then squeeze with gauze again to obtain 3.2 kg of filtrate,

[0030] Filte...

Embodiment 2

[0039] (1) Take 1 kg of corn husk, add 3 kg of water, then the water content of the material is 75%; take 1 kg of germ meal, add 3 kg of water, then the water content of the material is 75%.

[0040] (2) Add 3 g of amylase and 3 g of cellulase to the two materials respectively, that is, the amount of enzyme added is 0.3% of the dry basis of the material. After stirring evenly, the material was placed in an oven at 50°C for 24 h.

[0041](3) Take out the corn husk and germ meal, wrap them with three layers of gauze respectively, squeeze and tighten them tightly, and obtain the filtrate and filter residue. The corn husk material can obtain 1.7 kg of filtrate and 2.3 kg of filter residue; the germ meal material can obtain 2 kg of filtrate and 2 kg of filter residue.

[0042] (4) Add 3 kg of water to the corn husk filter residue, mix and squeeze again with gauze to obtain 2 kg of filter residue and 3.3 kg of filtrate; add 3 kg of water to the germ meal filter residue, mix and squ...

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Abstract

The present invention discloses a method for co-producing epsilon-polylysine and protein feed using byproducts of corns. Corn bran and germ meal are treated with amylase and cellulase respectively, which enable starch and a part of cellulose to be hydrolyzed into reducing sugars, the filtrate obtained after solid-liquid separation is mixed with glucose stock solution and the mixture is used as a carbon source, and by coordinating the carbon source with corn syrup which is used as an organic nitrogen source, epsilon-polylysine is produced by conducting liquid state fermentation; the filter residues obtained after the solid-liquid separation is dried to obtain the corn bran containing 12-20% of protein and the germ meal containing 25-35% of protein, and the protein content is higher than that of conventional corn bran and germ meal, thus the added values of corn bran and germ meal are promoted.

Description

technical field [0001] The invention belongs to the technical field of fermentation and feed production, and in particular relates to a method for simultaneously producing ε-polylysine and protein feed by utilizing corn by-products. Background technique [0002] Corn contains about 70% starch and 4-5% fat. In the corn deep processing industry, except the main products starch, starch sugar and corn oil, the by-products account for 25-30% of the corn composition. Specific types of by-products include corn bran, germ meal, corn steep liquor, protein powder, glucose mother liquor, etc. Various corn by-products are generally sold separately as feed ingredients, and the profit is very low. For example, although corn steep liquor has high protein content, due to the presence of sulfur, ash and other ingredients, it has poor palatability as a feed material. The presence of soluble protein and some sugars makes it difficult to process into solid materials, and the sales radius is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/14A23J3/14A23J3/34
CPCY02P60/87
Inventor 王棣李伟李树王楠谢登玉李秋红夏颖颖王茜
Owner SHANDONG XIWANG SUGAR
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