L-Tryptophan and L-phenylalanine auxotrophic mutant strains of the genus Bacillus which are capable of vigorous growth on culture medium containing enough of m-fluorophenylalanine and/or cinnamic acid to suppress growth of the parent strain produce more L-phenylalanine by aerobic fermentation of generally conventional aqueous media than the best L-phenylalanine producing related microorganisms available heretofore.
L-Tryptophan and L-phenylalanine auxotrophic mutant strains of the genus Bacillus(芽孢杆菌属
L-色氨酸和
L-苯丙氨酸辅助突变菌株)能够在含有足以抑制母菌株生长的间
氟苯丙
氨酸和/或
肉桂酸的
培养基上旺盛生长,通过一般常规
水培养基的有氧发酵产生的
L-苯丙氨酸比迄今为止最好的
L-苯丙氨酸生产相关微
生物产生的
L-苯丙氨酸更多。