Method for preparing composite amino acid

Abstract

The invention relates to a method for preparing compound amino acid, which is characterized in that after a first barrier separation of lysine fermented liquor, threonine fermented liquor, glutamic acid fermented liquor and methionine fermented liquor, remaining strong liquor is mixed with mother liquor obtained after concentration and crystallization; pH value is regulated to 4-6; then the solution is evaporated and concentrated, sprayed with concrete and granulated; finished product can be obtained after sieved and dried. In the finished product, content of lysine is 50-60 percent, threonine 10-20 percent, glutamic acid 8-10 percent, and methionine 8-10 percent. The method for preparing compound amino acid prepares compound amino acid by mixing the remaining strong liquor from a first barrier separation of lysine fermented liquor, threonine fermented liquor, glutamic acid fermented liquor and methionine fermented liquor in current amino acid fermentation production with mother liquor obtained after concentration and crystallization, thus realizing a recycling of waste resource; simultaneously, the manufacturing process is simple; water and power can be saved without pollution; the production cycle is short; comprehensive cost is greatly lowered, which conforms to national energy-saving emission reduction policies.

Description

technical field [0001] The invention relates to the technical field of biological fermentation, in particular to a preparation process of compound amino acids. Background technique [0002] In the prior art, the basic technological route of producing compound amino acids by fermentation is: firstly, the compound amino acids must be synthesized by microbial strains. To make the cells excessively accumulate compound amino acids, the bacteria must be artificially changed according to the metabolic characteristics of the strains. A kind of metabolic regulation, so that the metabolism is carried out in the direction required by the human body, and the compound amino acids are accumulated and released from the bacterial cells, so as to achieve the best effect of sugar conversion. There are following problems in this process route: 1. Its process is complicated, and process requirement is high: in order to meet the needs of large-scale industrial production, there must be enough, v...

AI Technical Summary

Problems solved by technology

There are following problems in this process route: 1. Its process is complicated, and process requirement is high: in order to meet the needs of large-scale industrial production, there must be enough, vigorous purebred seeds; Gradually expand the cultivation; only when the seeds are cultivated well can the fermentation acid production be high, the conversion high, and satisfactory results be achieved

2. There is a lot of waste water and waste, which is easy to pollute the environment

3. Large energy consumption such as water and electricity

[0003] For a long time, the waste liquid produced by the production of monomeric amino acids such as lysine and threonine has been discharged directly or after treatment, which not only pollutes the environment, but also causes energy waste