KINETIC OF LACTIC ACID BACTERIA FOR NHAM PRODUCTION
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Abstract
Glucose is a substrate for the growth of lactic acid bacteria. In the study of kinetics of those cultures in the model system, the glucose was varied to different levels such as 0.2%, 0.5%, 0.75%, 1.0%, 1.5% and 2.0% for 24 hours of fermentation time It was found that the specific growth rate (u) of Lactobacillus plantarum and Pediococcus cerevisiae was dependent upon the initial substrate. Additionally, the maximum specific growth rate (um) was 0.4525 hr-1 for L.plantarum and 0.3340 hr-1 for P. cerevisiae. On the other hand, the saturation constants (Ks) were 0.1165% and 0.3442% for L.plantarum and P. cerevisiae respectively. In fact that, glucose should be minimum 0.1165% for the growth of L. plantarum and should be minimum 0.3442% for the growth of P. cerevisiae. Because the growth of both cultures are associated fermentation. The product which was lactic acid, therefore, depended upon the growth of those cultures.
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