The isolation of pentose-assimilating yeasts and their xylose fermentation potential

摘要: For the implementation of cellulosic ethanol technology, maximum use lignocellulosic materials is important to increase efficiency and reduce costs. In this context, appropriate pentose released by hemicellulose hydrolysis could improve de economic viability process. Since Saccharomyces cerevisiae unable ferment pentose, search for pentose-fermenting microorganisms be an alternative. work, isolation yeast strains from decaying vegetal materials, flowers, fruits insects their application assimilation alcoholic fermentation xylose were carried out. From a total 30 isolated strains, 12 able assimilate 30gL-1 in 120h. The strain Candida tropicalis S4 produced 6gL-1 56gL-1 xylose, while C. E2 22gL-1 xylitol. oleophila G10.1 Metschnikowia koreensis G18 consumed significant amount aerobic cultivation releasing non-identified metabolites. different environment source pentose-assimilating with variable metabolic profile.