Title |
Fermentation of hexoses and pentoses from sugarcane bagasse hydrolysates into ethanol by Spathaspora hagerdaliae
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Published in |
Bioprocess and Biosystems Engineering, September 2018
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DOI | 10.1007/s00449-018-2016-y |
Pubmed ID | |
Authors |
Fernanda Roberta Rech, Roselei Claudete Fontana, Carlos A. Rosa, Marli Camassola, Marco Antônio Záchia Ayub, Aldo J. P. Dillon |
Abstract |
The present study evaluated 13 strains of yeast for ethanol and xylitol production from xylose. Among them, Spathaspora hagerdaliae UFMG-CM-Y303 produced ethanol yields (YP/S) of 0.25 g g- 1 and 0.39 g g- 1 under aerobic and microaerophilic conditions, respectively, from a mixture of glucose and xylose in flasks. A pH of 5.0 and an inoculum of 3.0 × 108 cells mL- 1r resulted in the highest ethanol yields. These conditions were tested in a bioreactor for fermenting a medium containing an enzymatic hydrolysate of sugarcane bagasse with 15.5 g L- 1 of glucose and 3 g L- 1 of xylose, and achieved a YP/S of 0.47 g g- 1, in relation to total available sugar. These results suggest that S. hagerdaliae UFMG-CM-Y303 has potential for use in second-generation ethanol studies. |
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