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Title: Ethanol production from Rice (Oryza sativa) straw by simultaneous saccharification and cofermentation
Authors: Goel, Annu
Wati, Leela
Keywords: Bioethanol;Candida sp.;Cellulose;Fermentation;Hemicellulose;Lignin;Pachysolen tannophilus;Saccharomyces cerevisiae
Issue Date: Aug-2016
Publisher: NISCAIR-CSIR, India
Abstract: Ethanol production from alkali treated rice straw was investigated by simultaneous saccharification and cofermentation (SSCF) using commercial cellulase and 3 different yeast strains viz., Saccharomyces cerevisiae HAU-1, Pachysolen tannophilus and Candida sp. individually as well as in combination at varied fermentation temperature and incubation time. Dilute alkali (2%) pretreatment of straw resulted in efficient delignification as observed by low residual lignin (12.52%) with 90.6% cellulose and 28.15% hemicellulose recovery. All the 3 yeast strains were able to produce ethanol form alkali treated rice straw and overall ethanol concentration varied from 5.30 to 24.94 g/L based on different fermentation time and temperature. Comparative analysis of ethanol production from different yeast strains combinations revealed maximum ethanol concentration of 23.48 g/L after 96 h incubation at 35ºC with P. tannophilus individually and 24.94 g/L when used as co-culture with Saccharomyces cerevisiae.
Page(s): 525-529
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Appears in Collections:IJEB Vol.54(08) [August 2016]

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