Evaluation of Cashew Apple Juice for the Production of Fuel Ethanol.

Álvaro Pinheiro; Maria Rocha; Gorete Macedo; Luciana Gonçalves

Abstract  A commercial strain of Saccharomyces cerevisiae was used for the production of ethanol by fermentation of cashew apple juice. Growth kinetics and ethanol productivity were calculated for batch fermentation with different initial sugar (glucose fructose) concentrations. Maximal ethanol, cell, and glycerol concentrations were obtained when 103.1 g L−1 of initial sugar concentration was used. Cell yield (Y X/S) was calculated as 0.24 (g microorganism)/(g glucose fructose) using cashew apple juice medium with 41.3 g L−1 of initial sugar concentration. Glucose was exhausted first, followed by fructose. Furthermore, the initial concentration of sugars did not influence ethanol selectivity. These results indicate that cashew apple juice is a suitable substrate for yeast growth and ethanol production.

SACCHAROMYCES; CASHEW oil; ETHANOL as fuel; FERMENTATION

Applied Biochemistry & Biotechnology, 2008, Vol 148, Issue 1-3, p227

0273-2289

Academic Journal

10.1007/s12010-007-8118-7