Mathematical-Modeling of the Alcoholic Fermentation of Glucose by Zymomonas-Mobilis Mobilis

GARRO, OA; RODRIGUEZ, E; UNDA, RP; CALLIERI, DAS; OSCAR ALFREDO GARRO

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY

Wiley

Año: 1995 vol. 63 p. 367 - 373

The kinetics of alcoholic fermentation of a strain of Zymomonas mobilis, isolated from sugarcane juice, has been studied with the objective of determining the constansts of a non-structured mathematical model that represents the fermentation process. Assays in batch and in continuous culture have been carried out with different initial concentrations of glucose. The final concentrations of glucose, ethanol and biomass were determined. The following kinetic parameters were obtained: max, 0·5 h-1; Ks, 4·64 g dm-3; Pmax, 106 g dm-3; Yx/s, 0·0265 g g-1; m, 1·4 g g-1 h-1; , 17·38 g g-1; , 0·69 g g-1 h-1.