Bioconversion of Glycerol into Lactic Acid by a New Bacterial Strain from the Brazilian Cerrado Soil

A lactic-acid-producing strain was isolated from the Brazilian Cerrado soil (Brazilian savanna). Glycerol, a byproduct of biodiesel industry, can be converted into various chemical intermediates industrial value by biotechnological routes. Klebsiella pneumoniae metabolize glycerol in environments with or without oxygen and bioconvert it several chemicals high value-added, such as lactic acid, 3-hydroxypropionic acid 1,3 propanediol. The wild-type bacterial (2GPP) sample determined to K. complex that capable successfully metabolizing glycerol. Fermentations were performed different temperatures, pH, inoculum concentrations evaluate best production. At first, 1,3-propanediol L-(+)-lactic produced mini reactors. production 3.8 g·L?1 decrease output observed. Thus, adjusting process variables pH temperature during fermentation, possible maximize formation utilizing experimental design strategies.