ISOLATION AND IDENTIFICATION OF LACTIC ACID BACTERIA FROM DIFFERENT FOOD SAMPLES

Lactic acid bacteria occur naturally as indigenous micro flora. Lactic acid bacteria isolated from different food samples. Lactic acid bacteria is a heterogeneous group of regular, gram-positive, rod shaped, non motile, non-spore forming bacteria with absence of catalase enzyme. Totally 80 LAB colonies were isolated after growth on MRS and M 17 agar medium and the pure culture obtained from the same medium. Among the 80 LAB isolates, 10 LAB isolates viz., Lactobacillus spp., Lactococcus sp., and pediococcus spp., were identified by morphological, physiological and Biochemical characterization. Key words: Lactic acid bacteria, Lactobacillus spp., Lactococcus sp., and pediococcus spp.