Efficient simultaneous saccharification and fermentation of agricultural residues by Saccharomyces cerevisiae and Candida shehatae. The D-xylose fermenting yeast

Palnitkar, S.S.; Lachke, A.H.

Applied Biochemistry and Biotechnology 26(2): 151-158

1990


ISSN/ISBN: 0273-2289
PMID: 2091527
DOI: 10.1007/bf02921531
Accession: 039991589

Download citation:  
Text
  |  
BibTeX
  |  
RIS

Article/Abstract emailed within 0-6 h
Payments are secure & encrypted
Powered by Stripe
Powered by PayPal

Abstract
Simultaneous Saccharification and Fermentation (SSF) experiments were carried out on agricultural residues using culture filtrate of Sclerotium rolfsii, which produces high levels of cellulases and hemicellulases for the saccharification of rice straw and bagasse, and Candida shehatae--the D-xylose fermenting yeast, and Saccharomyces cerevisiae, both separately and in coculture, for fermenting the released sugars. The coculture system showed efficient utilization of hydrolyzed sugars with 30-38% and 10-13% increase in ethanol production as compared to C. shehatae and S. cerevisiae, respectively, when cultivated separately. SSF simulation studies were carried out using standard sugar mixtures of glucose, xylose, and cellobiose. Both organisms could not use cellobiose, whereas glucose was used preferentially. C. shehatae was capable of utilizing xylose in the presence of glucose.

Efficient simultaneous saccharification and fermentation of agricultural residues by Saccharomyces cerevisiae and Candida shehatae. The D-xylose fermenting yeast