Biotechnology and Molecular Biology Reviews

  • Abbreviation: Biotechnol. Mol. Biol. Rev.
  • Language: English
  • ISSN: 1538-2273
  • DOI: 10.5897/BMBR
  • Start Year: 2006
  • Published Articles: 102

Review

Bioconversion of pentose sugars into ethanol: A review and future directions

Anuj Kumar Chandel1,4, Gajula Chandrasekhar1, Konakalla Radhika1, Rudravaram Ravinder2 and Pogaku Ravindra3*
1Centre for Biotechnology, Jawaharlal Nehru Technological University, Hyderabad-500 085, India. 2Celestial Labs Limited, Banjara Hills, Hyderabad -500 034 (A.P) India. 3School of Engineering and Information Technology, University Malaysia Sabah, Kotakinabalu, 88999 Sabah Malaysia. 4Department of Biotechnology, School of Engineering of Lorena, University of Sao Paulo, Lorena- 12.602.810, Brazil.
Email: [email protected]

  •  Accepted: 29 November 2010
  •  Published: 31 January 2011

Abstract

Hemicelluloses, the second most abundant polysaccharide in nature, are well suited for ethanol production due to their enormous availability, low cost and environmental benign process. The major fraction in hemeicelluloses is pentosans and the conversion of pentosans to ethanol is problematic. To get the process economized, the conversion of hemicellulose to ethanol with a satisfactory yield is necessary. In recent years, significant advances have been made towards the technology of pentosans to ethanol conversion. However, there are technical and economical impediments to the development of commercially viable processes utilizing hemicellulosic derived sugars. This article provides an overview of the new insights in pentose sugars conversion into ethanol, pentoses resources, microorganisms and the technology.

 

Key words: Hemicellulose, bioethanol, pentose sugars, yeasts, fermentation.