Crude Glycerol: A Feedstock for Organic Acid Production by Microbial Bioconversion
Thomas P. West*
Department of Biology and Microbiology, South Dakota State University, Brookings, SD 57007, USA
- *Corresponding Author:
- T. P. West
Department of Biology and Microbiology
South Dakota State University
Box 2104A, Brookings, SD 57007, USA
E-mail: [email protected]
Received Date: July 26, 2012; Accepted Date: August 01, 2012; Published Date: August 06, 2012
Citation: West TP (2012) Crude Glycerol: A Feedstock for Organic Acid Production by Microbial Bioconversion. J Microbial Biochem Technol 4:ii-ii. doi: 10.4172/1948-5948.1000e106
Copyright: © 2012 West TP. 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.
As the global production of biodiesel as a fuel continues to increase, this will also result in a surplus of the co-products of this process. The co-product stream of biodiesel production usually includes glycerol, fatty acids and methylesters of fatty acids which is referred to as crude glycerol. During the production of vegetable oil-based biodiesel, the transesterification of the oil results in crude glycerol being formed at about 10% in weight. As the demand for biodiesel continues to increase, it will be necessary to learn whether the co-product crude glycerol, with a current price of $0.05/pound, can serve as a feedstock for subsequent microbial bioconversion into commercially valuable organic acids such as citric acid, oxalic acid, succinic acid, malic acid and fumaric acid. Recent articles have indicated that some of these industrially important organic acids can be synthesized from crude glycerol using microbial bioconversion.