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Food Science

Fermentation

Chemical and Biological Engineering Publications

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Full-Text Articles in Life Sciences

Production Of Fatty-Acyl-Glutamate Biosurfactant By Bacillus Subtilis On Soybean Co-Products, Mustafa E. Marti, William J. Colonna, Gabriel Reznik, Michelle Pynn, Kevin Jarrell, Buddhi P. Lamsal, Charles E. Glatz Mar 2015

Production Of Fatty-Acyl-Glutamate Biosurfactant By Bacillus Subtilis On Soybean Co-Products, Mustafa E. Marti, William J. Colonna, Gabriel Reznik, Michelle Pynn, Kevin Jarrell, Buddhi P. Lamsal, Charles E. Glatz

Chemical and Biological Engineering Publications

Fatty-acyl-glutamate (FA-Glu), a surfactin variant has been successfully produced using a genetically modified strain of Bacillus subtilis grown on glucose. However, yields with soybean hulls (SBH) replacing glucose were lower. This work was undertaken to reduce the yield loss when using SBH as the carbon source and to evaluate two other soy by-products, namely fiber and skim from aqueous oil extraction as alternative carbon and nitrogen sources.

Fermentation of soybean hulls, fibers and skim at various concentrations produced lower FA-Glu titers compared to S-7 medium. Neither increasing their amount nor supplementing with glucose increased the FA-Glu titer, suggesting the presence ...