Ethanol production from native cassava starch by a mixed culture of Endomycopsis fibuligera and Zymomonas mobilis.

GONZÁLEZ C; DELGADO O; BAIGORÍ M; ABATE C; DE FIGUEROA L; CALLIERI D A C

ACTA BIOTECHNOLOGICA

wiley-vch

Lugar: Alemania; Año: 1998 vol. 2 p. 149 - 155

0138-4988

The conversion of starch from unhydrolyzed cassava flour to ethanol by a pure culture of Endomycopsis fibuligera and by a co-culture of this amylolytic yeast and the bacterium Zymomonas mobilis was studied.The best overall results were obtained using the mixed culture. After 96 h of fermentation of a medium containing 150 g/l initial cassava starch, an ethanol concentration of 31.4 g/l, a productivity of 0.33 g ethanol/l × h and a yield of 0.21 g ethanol/g initial starch were reached. The highest yield (0.37 g/g) was obtained after 48 h when using a medium containing 50 g/l initial starch.