PROCESS FOR PRODUCING L-GLUTAMIC ACID

摘要

In a method for producing L-glutamic acid by fermentation, which comprises culturing a microorganism that can metabolize a carbon source at a specific pH in a liquid medium containing L-glutamic acid at a saturation concentration and the carbon source and has an ability to accumulate L-glutamic acid in a liquid medium having said pH in an amount exceeding the amount corresponding to said saturation concentration of L-glutamic acid in a medium of which pH is controlled so that L-glutamic acid is precipitated to cause accumulation of L-glutamic acid in the medium while precipitating the L-glutamic acid, L-lysine is made exist in the medium when L-glutaminc acid concentration in the medium is lower than the concentration at which natural crystallization of L-glutamic acid occurs so that a-form crystals of L-glutamic acid is precipitated.