INVESTIGADORES
GARRO Oscar Alfredo
artículos
Título:
Experimental approaches to a rapid ethanol fermentation of glucose by a Zymomonas mobilis strain
Autor/es:
GARRO, OA; RODRIGUEZ, E; CALLIERI, DAS
Revista:
World Journal of Microbiology & Biotechnology
Referencias:
Año: 1990 vol. 6 p. 67 - 72
ISSN:
0959-3993
Resumen:
Abstract Rapid ethanol fermentation is defined as a fermentation in which the ethanol content increases from 0 to 94.8 g 11 in 6 horless. To achieve this by the fermentation of glucose withZymomonas mobilis, the initial biomass concentration must be at least 20 g dry wt 11 and that of the substrate must not exceed 150 to 200 g 11
during fermentation. The best results were obtained with a medium
containing initielly 16% of the total sugar with the remaining glucose
being added continuously, after 20 min of incubation, over 5 h at a
rate of 0.21 g/min. After 6 h, ethanol reached 102 g 11, the volumetric productivity was 17g ethanol 11 h1
and the yield 79.8 or 88% of the theoretical value, calculated
according to the total fed or the consumed glucose, respectively.