Disc solid aerobic fermentation soybean meal and preparation method and application thereof

Abstract

The invention relates to the field of fermentation engineering and feed raw material and particularly discloses disc solid aerobic fermentation soybean meal as well as a preparation method and application thereof. The preparation method comprises the following steps: raw material moistening with water, cooking, cooling, inoculating, carrying out disc fermentation, carrying out low-temperature drying, crushing, weighing and packaging, wherein the inoculation and fermentation comprises first-stage aspergillus oryzae solid-state culture and fermentation and second-stage saccharomyces cerevisiae culture and fermentation; the disc is used as a fermentation container, so that intelligent regulation and mechanical continuous production are realized; the obtained fermented soybean meal is stable and reliable in quality, rich in digestive enzymes and yeast metabolites, high in crude protein and acid-soluble protein content, low in anti-nutritional factor and good in palatability and food calling effect, and the in-vitro bionic digestibility is larger than or equal to 80%, the antinutritional factor is low, and the soybean meal has good palatability and food calling effect; the fermented soybean meal is used in animal breeding and can significantly improve digestion and absorption of animals to feed nutrients, improve growth performance, enhance immunity, reduce a feed-weight ratio, improve unit capacity and bring economic benefits to farmers.

Description

technical field [0001] The invention relates to the technical field of fermentation engineering and feed raw materials, in particular to a disc solid aerobic fermented soybean meal and its preparation method and application. Background technique [0002] Soybean meal is an agricultural and sideline product produced after soybean oil extraction by pressing. It has high crude protein content, good balance of essential amino acids, and nutritional components close to fishmeal animal protein, which can meet the growth needs of animals. It is an easy-to-obtain, high-quality and low-priced Inexpensive vegetable protein. However, the molecular weight and molecular structure of soybean meal protein are complex, including α-helix, β-sheet, etc., which are generally composed of quaternary structures; at the same time, there are many anti-nutritional factors in soybean meal protein source, heat-sensitive anti-nutritional factors such as lectins, trypsin inhibitors, Antivitamin factors...

AI Technical Summary

Problems solved by technology

With the rapid development of soybean meal fermentation research, the feeding effect of fermented soybean meal in aquaculture is obvious, so that its application in replacing animal protein such as fish meal has attracted more and more attention, but there are still some problems, mainly including: (1) The manufacturer's standard is not Unified, unstable enzyme activity, batch fermentation level cannot be guaranteed; (2) Fermentation raw materials are basically raw meal, mainly facultative anaerobic fermentation, anti-nutritional factors are not completely removed, protein molecular structure degradation rate is low, hygienic indicators Poor; (3) The moisture content of fermented soybean meal is high, the protein content is not up to the standard, and the storage time is short; (4) The fermentation production equipment and supporting facilities are not perfect, and the input of manpower and material resources is large; (5) The fermentation time is long, and the equipment and output rate Low; (6) The fermentation conditions are not controlled precisely, and the fermentation parameters fluctuate greatly, making it difficult to guarantee the stability of product quality

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