EFFECT OF DIFFERENT CARBON-SOURCES ON GROWTH AND GLUTAMIC-ACID FERMENTATION BY BREVIBACTERIUM SP

Experiments were carried out to find the efficiency of Brevibacterium sp. to utilize different carbon sources (glucose, fructose, sucrose, m altose, lactose, xylose and starch) for its growth and for the product ion of glutamic acid. Except starch, all the carbon sources supported the growth of the culture, which showed a preferential choice of growt h and activity when grown on glucose as sole carbon source. Mixed subs trate fermentation did not improve the yield of amino acid. Maximum gl utamic acid yields (6.86 mg/ml) were obtained when 2% glucose medium w as fermented under optimized conditions for 48 h.