alexa Triacylglycerol Production from Corn Stover Using a Xyl
ISSN: 1948-5948

Journal of Microbial & Biochemical Technology
Open Access

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Research Article

Triacylglycerol Production from Corn Stover Using a Xylose-Fermenting Rhodococcus opacus Strain for Lignocellulosic Biofuels

Kazuhiko Kurosawa1, Sandra J Wewetzer3 and Anthony J Sinskey1,2*

1Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA

2Engineering Systems Division, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA

3Department of Biochemical Engineering, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany

*Corresponding Author:
Anthony J. Sinskey
Department of Biology
Massachusetts Institute of Technology
Room 68-370, 77 Massachusetts Avenue
Cambridge, MA 02139, USA
Tel: +1-617-253-6721
Fax: +1-617-253-8550
E-mail: [email protected]

Published date: May 02, 2014; Published date: June 04, 2014; Published date: June 11, 2014

Citation: Kurosawa K, Wewetzer SJ, Sinskey AJ (2014) Triacylglycerol Production from Corn Stover Using a Xylose-Fermenting Rhodococcus opacus Strain for Lignocellulosic Biofuels. J Microb Biochem Technol 6: 254-259. doi:10.4172/1948-5948.1000153

Copyright: © 2014 Kurosawa K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Triacylglycerols (TAGs) are in the spotlight as a feasible source of hydrocarbon-based biofuels. Rhodococcus opacus PD630 produces large amounts of intracellular TAGs in cultivations containing high concentrations of glucose, but it does not utilize xylose present in all hydrolysates of lignocellulosic biomass. We constructed a highpotency xylose-fermenting R. opacus strain MITXM-61 that exhibited robust growth and TAG biosynthesis on high concentrations of xylose by activating potential xylose-metabolism genes. MITXM-61 had the uncommon capacity to grow in defined media supplemented with xylose at concentrations of greater than 200 gl-1. MITXM-61 grown in corn stover hydrolysates containing 118 gl-1 of initial total sugars was capable of completely and simultaneously utilizing both xylose and glucose in the genuine lignocellulosic feedstock, and yielded 15.9 gl-1 of TAGs, corresponding to 54% of the cell dry weight. The oleaginous bacterium R. opacus strain proved useful for developing a new manufacturing paradigm to generate advanced lignocellulosic biofuels.

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