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Bioethanol fermentation of concentrated rice straw hydrolysate using co-culture of Saccharomyces cerevisiae and Pichia stipitis.
MedLine Citation:
PMID:  21470850     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Rice straw is one of the abundant lignocellulosic feed stocks in the world and has been selected for producing ethanol at an economically feasible manner. It contains a mixture of sugars (hexoses and pentoses). Biphasic acid hydrolysis was carried out with sulphuric acid using rice straw. After acid hydrolysis, the sugars, furans and phenolics were estimated. The initial concentration of sugar was found to be 16.8gL(-1). However to increase the ethanol yield, the initial sugar concentration of the hydrolysate was concentrated to 31gL(-1) by vacuum distillation. The concentration of sugars, phenols and furans was checked and later detoxified by over liming to use for ethanol fermentation. Ethanol concentration was found to be 12gL(-1), with a yield, volumetric ethanol productivity and fermentation efficiency of 0.33gL(-1)h(-1), 0.4gg(-1) and 95%, respectively by co-culture of OVB 11 (Saccharomyces cerevisiae) and Pichia stipitis NCIM 3498.
Authors:
K Srilekha Yadav; Shaik Naseeruddin; G Sai Prashanthi; Lanka Sateesh; L Venkateswar Rao
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-4
Journal Detail:
Title:  Bioresource technology     Volume:  -     ISSN:  1873-2976     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
Department of Microbiology, Osmania University, Hyderabad 500 007, AP, India.
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