Method for fermenting food industry leftovers by fermenting agent containing bacillus velezensis

Abstract

The invention discloses a method for fermenting food industry leftovers by using a fermentation agent containing bacillus velezensis, which comprises the following steps: (1) inoculating bacillus velezensis XDY021 bacterial liquid into a sterilized culture medium, carrying out shake-flask culture, and then transferring into a seed tank for culture to obtain the fermentation agent containing bacillus velezensis; (2) taking a fermentation substrate composed of protein-containing leftovers and sugar-containing leftovers, adding water, and grinding into slurry; and (3) putting the pasty fermentation substrate into a fermentation tank, adjusting the pH value, adding a fermentation agent containing bacillus velezensis, and fermenting for 24-120 hours, thereby obtaining the product. According to the method disclosed by the invention, the protein-containing leftovers and the sugar-containing leftovers are fermented by the fermentation agent containing bacillus velezensis, the particle size, the water insoluble content and the like of the obtained fermentation material just meet the requirements for culturing the spider, and the fermentation material is beneficial to ingestion of the spider and is particularly suitable for being used as a bait for culturing the spider. In addition, the bacillus velezensis XDY021 still exists, so that the bacillus velezensis XDY021 is resistant to storage, other infectious microbes cannot be bred in the storage process, and the phenomena of flatulence, expansion and the like cannot occur.

Description

technical field [0001] The invention relates to the application of Bacillus Velez, in particular to a method for fermenting food industry waste with a starter containing Bacillus Velez. Background technique [0002] The yuba factory and soy sauce factory use soybeans to produce yuba and soy sauce, which will produce a large amount of waste yuba residue and waste soy sauce residue (hereinafter collectively referred to as protein-containing scraps). These protein-containing scraps have always been used to feed fish ponds as a breeding Auxiliary bait for fish, because these leftovers have not been decomposed and can only be used in small quantities, their nutrient utilization rate is very low, and their added value is very low; on the other hand, because these leftovers are easy to contaminate bacteria , directly used as feed without sterilization and fermentation treatment, it is easy to cause disease in fish; there are many such protein-containing wastes, such as cakes and br...

AI Technical Summary

Problems solved by technology

[0006] Artificial cultivation of living water spiders requires special bait. At present, common chicken manure and other manure fertilizers are mainly used to cultivate water spiders, and some feed materials are used to prepare such as water spiders. The cost of raw materials is relatively high, so using leftovers from the food industry as raw materials for the production of special bait for water spiders has become a better choice for the development of special bait for water spiders

[0007] To ferment protein-containing waste and sugar-containing waste into special bait for cultivating water spiders, it is necessary to screen out special strains suitable for fermenting and decomposing these wastes. Currently, the commonly used strains of fermented feed are Bacillus subtilis, Saccharomyces cerevisiae, etc. , using these strains to ferment these leftovers is often over-fermented, and most of the crude protein is fermented into water-soluble amino acids or small peptides, which are not suitable for feeding water spiders, so a strain with a proper fermentation degree must be selected. to ferment the above leftovers to convert them into bait materials for water spiders

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