Method for producing feed additive by using amino acid fermentation byproducts

Abstract

The invention provides a method for producing a feed additive by using amino acid fermentation byproducts. The method comprises the following steps: in a production process for preparing amino acid by using a fermentation method, after fermentation is finished, filtering fermentation liquor to remove thalli, and then preparing food-grade or pharmaceutical-grade amino acid crystals and simultaneously obtaining the fermentation byproducts through a concentration crystallization or ion exchange process, and obtaining amino acid fermentation mother liquor, wherein the amino acid fermentation mother liquor is treated by the following steps in sequence: A, evaporating the amino acid fermentation mother liquor by using a triple-effect evaporator, and finally concentrating the amino acid fermentation mother liquor until the dry matter accounts for 20-60%; B, cooling and crystallizing the concentrated amino acid mother liquor, and then centrifugally separating to obtain crystals; and C, cleaning and drying the crystals, and controlling the water content of the final product to be below 10%, and taking the final product as the feed additive. According to the method, the production cost can be reduced while the high-quality compound amino acid additive is produced, so that considerable economic benefits are brought to related production enterprises.

Description

technical field [0001] The invention belongs to the technical field of recycling by-products of amino acid fermentation industry, and in particular relates to a method for producing feed additives by using amino acid fermentation by-products. Background technique [0002] Modern aquaculture is inseparable from scientific and efficient feeding technology, and the precision nutrition technology that has emerged in recent years is one of the indispensable technologies for modern aquaculture. Precision nutrition is to provide animals with the most efficient nutritional solutions by adjusting key parameters such as feed formula and feeding methods according to animal species, strains, growth stages, feeding environment, breeding level, etc., so that animals can obtain higher nutrition. Excellent production performance, lower death rate, more comfortable growth environment, but also bring lower costs, less emissions and higher benefits for farming enterprises. One of the most imp...

AI Technical Summary

Problems solved by technology

Although this method has a simple process and low production cost, mixing a large amount of low-value finished products into high-value functional amino acids not only lowers the overall product value, but also brings many problems to the subsequent feed formulation work due to its complex product composition. troubled

At the same time, functional amino acid products are mostly used in feed for specific stages such as lactation, weaning, and pregnancy. Animals in these stages have higher requirements for feed quality. The low-value raw materials mixed in the above patents have risks such as high salt, toxins, and anti-nutritional factors. , thus further hindering the application of similar products in the farming end

[0008] In summary, high-quality compound functional amino acid additives are mixed with crystalline amino acids, which are of good quality but high in price, while low-quality functional amino acid additives also limit the wide application of the product due to their complex composition and many anti-nutritional elements.