Kinetic analysis of lactic acid fermentation by using an extended logistic model

Abstract

This study aimed to analyze the dynamics of biomass growth, lactic acid production, and glucose consumption for three microorganisms; Weissella cibaria IBUN 090-03684, Lactobacillus pantarum IBUN 090-03774, and Lactobacillus pantarum IBUN 04139 by using an extended logistic model. The microorganisms were cultivated in a 1 L bioreactor with pH control by using MRS medium at 37 ∘C for 24 h at 100 rpm. Weissella cibaria IBUN 090-03684 exhibited the highest product yield (1.26 gg−1), followed by Lactobacillus plantarum IBUN 04139 (0.96 gg−1), and Lactobacillus plantarum IBUN 090-03774 (0.90 gg−1), respectively. The results indicate that Weissella cibaria IBUN 090-03684 holds significant potential for large-scale lactic acid production. Furthermore, the reported modeling strategy fits well with experimental data for the three microorganisms evaluated.