The pH ranged within 3.2-6.5 in which L. plantarum LPF2 had the least. L. plantarum LPW7 and LPBO9, Leu. messenteroides LMWO2 and LMW4 had the ability to reduce the pH of the fermentation medium to 3.8, respectively, at 36 hrs after incubation. Reduction in pH during fermentation is due to the fermentative transformation of carbohydrates to lactic acid