EFFECT OF SOME AMINO ACIDS ON THE GROWTH AND L-GLUTAMIC ACID FERMENTATION BY AN AUXOTROPHIC MUTANT Micrococcus glutamicus AB100.

An investigation was carried out on the effect of some amino acids on the growth and production of Lglutamic acid by a mutant Micrococcus glutamicus AB100 using selected suitable synthetic medium. It wasobserved that among different amino acids studied, l-alanine, -arginine, l-threonine, l-tryptophan, l-proline and l-hitidine had positive effect; l-leucine, l-valine, l-phenylalanine, l-serine, l-methionine, l-lysine, l-glycine, lcystine and l-asparagine had no effect, where as l-glutamic acid had negative effect on growth and l-glutamic acid production. maximum growth and l-glutamic acid was obtained with l-alanine, 0.3 mg/ml; l-arginine, 0.5 mg/ml; l-threonine, 0.3 mg/ml; l-tryptophan, 0.5 mg/ml; l-proline 0.75 mg/ml; and l-hitidine, 0.75 mg/ml.