期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 3, 页码 2788-2792出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.11.097
关键词
Bioethanol; Sorghum stover; Fuel; Pachysolen tannophilus; Saccharomyces cerevisiae
资金
- Tamil Nadu State Council for Science and Technology, Chennai [VR/ES/2004-2005/1194]
- Jawaharlal Nehru Memorial Fund, New Delhi [SU/1/644/2008-2009/750]
- Council of Scientific and Industrial Research, New Delhi [9/652 (20019)/2010-EMRI]
In this study, we demonstrate that the sorghum field waste, sorghum stover could be used to produce fuel grade ethanol. The alkaline treatment of 2% NaOH for 8 h removed 64% of lignin from sorghum stover. Maximum of 68 and 56 g/L of ethanol yield were obtained by Saccharomyces cerevisiae (MTCC 173) and Pachysolen tannophilus (MTCC 1077) from sorghum stover under optimized condition, respectively. pH and temperature were optimized for the better growth of S. cerevisiae and P. tannophilus. A total of 51% and 48% more ethanol yield was obtained at initial sugar concentration of 200 g/L than 150 g/L by P. tannophilus and S. cerevisiae. respectively. Respiratory deficiency and ethanol tolerance of the organisms were studied. This investigation showed that sorghum field waste could be effectively used for the production of fuel ethanol to avoid conflicts between human food use and industrial use of crops. (C) 2010 Elsevier Ltd. All rights reserved.
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