Method for producing high-lysine fermented feed through fermentation of vinegar residue using two-step method

Abstract

The invention discloses a method for producing a high-lysine fermented feed through fermentation of vinegar residue using a two-step method, comprising the following steps: (1) preparing potato culture medium, inoculating aspergillus niger strains onto the potato culture medium to cultivate; (2) preparing lysine seed culture medium; inoculating corynebacterium glutamicum strains onto the lysine seed culture medium to cultivate; (3) inoculating the aspergillus niger strains onto the vinegar residue to ferment and obtain a pretreatment material through the fermentation of the vinegar residue by the aspergillus niger; (4) inoculating the corynebacterium glutamicum strains onto the pretreatment material which is fermented by the aspergillus niger to ferment and cultivate; and (5) drying at a temperature not higher than 85 DEG C until the water content is below 15% so as to obtain the high-lysine fermented feed through the fermentation of the vinegar residue. The feed produced through the method of the invention has high lysine content and a variety of microbial enzymes, etc. The substances has obvious effects on digestion and absorption, growth and development, and body immunity of animals, and can increase beneficial bacteria in animal intestines and improve intestinal microecology.

Description

technical field [0001] The invention relates to a microbial solid-state fermentation technology, in particular to a two-step method for fermenting vinegar grains to produce high-lysine fermented feed. Background technique [0002] Vinegar grains are the largest by-product of vinegar production. At present, the whereabouts of vinegar grains are mainly used as feed for aquaculture. Vinegar grains can be directly used as animal feed, and these feeds are often directly fed to various animals after simple crushing, cooking and other processing. In this way, the utilization rate of active ingredients in the feed is low, causing a lot of waste. Moreover, long-term consumption of such feed by animals will cause malnutrition and low immunity. Slow down the growth rate of the animal or reduce the egg production rate of the animal. From the perspective of nutrition, vinegar grains are not an ideal feed protein source, with low protein content and unbalanced amino acid composition. ...

AI Technical Summary

Problems solved by technology

From the perspective of nutrition, vinegar grains are not an ideal feed protein source, the protein content is low, and the composition of amino acids is unbalanced. There is also a process to extract effective substances such as protein from vinegar grains, but the efficiency is low and the cost is high

The remaining substances are still difficult to comprehensively utilize, and discarding them is not conducive to environmental protection. If the vinegar grains are used to produce fermented feed through bio-fermentation technology, it will not only be a comprehensive and high-value-added utilization of resources, but also effectively prevent environmental pollution.