studies were conducted on the viability of micrococcus varians strain m95 and lactobacillus plantarum strain l4 upon freezing and freeze-drying using five cryoprotectants ( sucrose , lactose , sodium glutamate , peptone , dry nonfat milk ) singly or in combinations with gelatin , glutamic acid , and sodium acetate .
C0037511
sodium glutamate
C0061472
glutamic acid