Technological process for producing the single-cell protein by liquid state fermentation of potato marc

Abstract

The invention provides a method for producing single-cell proteins from potato residues by liquid-state fermentation. The method utilizes Trichoderma and yeast capable of transforming cellulose substances in potato residues and improves the palatability of single-cell proteins in livestock and fowl. The mixed strains of Trichoderma, Penicillium and yeast are inoculated to potato residues to allow liquid-state fermentation for about 6 days at 28 DEG C under such condition that the relative oxygen content is 5-10%, to produce a protein feed. The content of crude proteins in the protein feed reaches up to 40%. The content of SO4<2-> in the protein feed made from potato residues is reduced by more than 50% on average. Therefore, the invention solves the problem that the protein feed with high SO4<2-> concentration is bitter and not accepted by livestock and fowl and may cause diarrhea in animals. Rat study proved that the protein feed made from potato residues by liquid-state fermentation using Trichoderma, Penicillium and yeast strains is innoxious and has good grow-promoting effect.

Description

(1) Technical field [0001] The invention relates to a process for producing single-cell protein, in particular to a process technology for producing single-cell protein feed by liquid-state fermentation using potato dregs as raw materials. (2) Background technology [0002] In the process of producing starch from potatoes at home and abroad, a large amount of potato residue and juice are produced, and the main components of potato residue and juice are cellulose and protein. Due to the need to add some chemical substances in the process of producing starch, the palatability is poor, so the potato residue produced cannot be directly used by livestock and poultry, and the potato residue cannot be directly used as animal feed. In northern my country, most of the deep processing of potatoes is used to make starch and vermicelli to produce a large amount of waste residue. Due to the lack of scientific and effective treatment technology, the potato residue and sewage generated in ...

AI Technical Summary

Problems solved by technology

Due to the need to add some chemical substances in the process of producing starch, the palatability is poor, so the potato residue produced cannot be directly used by livestock and poultry, and the potato residue cannot be directly used as animal feed

In northern my country, most of the deep processing of potatoes is used to make starch and vermicelli to produce a large amount of waste residue. Due to the lack of scientific and effective treatment technology, the potato residue and sewage generated in the starch production process are discharged arbitrarily, which not only causes the potato residue contained in the potato residue The loss of a large amount of nutrients will cause serious environmental pollution and negative social impact

[0003] At present, there is no good treatment method for potato residues. Starch enterprises are eager to find a good method that can not only treat potato residues and sewage, but also produce obvious economic benefits.

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