Homolactic fermentation from glucose and cellobiose using Bacillus subtilis
Por:
Romero-Garcia, S, Hernandez-Bustos, C, Merino, E, Gosset, G, Martinez, A
Publicada:
21 abr 2009
Resumen:
Backgroung: Biodegradable plastics can be made from polylactate, which is a polymer made from lactic acid. This compound can be produced from renewable resources as substrates using microorganisms. Bacillus subtilis is a Gram-positive bacterium recognized as a GRAS microorganism (generally regarded as safe) by the FDA. B. subtilis produces and secretes different kind of enzymes, such as proteases, cellulases, xylanases and amylases to utilize carbon sources more complex than the monosaccharides present in the environment. Thus, B. subtilis could be potentially used to hydrolyze carbohydrate polymers contained in lignocellulosic biomass to produce chemical commodities. Enzymatic hydrolysis of the cellulosic fraction of agroindustrial wastes produces cellobiose and a lower amount of glucose. Under aerobic conditions, B. subtilis grows using cellobiose as substrate. Results: In this study, we proved that under non-aerated conditions, B. subtilis ferments cellobiose to produce L-lactate wi
Filiaciones:
Univ Nacl Autonoma Mexico, Inst Biotecnol, Dept Ingn Celular & Biocatalisis, Cuernavaca 62250, Morelos, Mexico
Univ Nacl Autonoma Mexico, Inst Biotecnol, Dept Mol Microbiol, Cuernavaca 62250, Morelos, Mexico
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