氨基酸发酵法都要具备一个条件,即都要选育氨基酸生物合成能力高的菌株。菌种选育最初是从自然界检出有能力的菌株,以后建立了突变技术,随着氨基酸生物合成系统调节机理的阐明,又发展了营养要求性变异菌株、药物耐性菌株的选育,并且大多数氨基酸都可由此生产。特别是最近几年,开始应用使突变技术获得的优良性质相组合的方 Amino acid fermentation method should have a condition, that is, have to select high amino acid biosynthesis strains. Strain selection was initially detected in nature competent strains, after the establishment of mutation technology, with the amino acid biosynthesis system regulation mechanism elucidation, but also the development of nutrient-demanding mutant strains, drug-resistant strains of breeding, and large The majority of amino acids can be produced from this. In particular, in recent years, the application of a combination of the excellent properties obtained by mutation techniques has begun