Fermentative L-Lactic Acid Production Using Bacillus coagulans from Corn Stalk Deconstructed by an Anaerobic Microbial Community

This study investigated the feasibility of producing L-lactic acid (LA) from dry corn stalk (DCS) that was pretreated by ensiling an anaerobic microbial community consisting Bacillus coagulans, Lactobacillus fermentum, and Enterococcus durans. After 28 days ensiling, LA acetic content in microsilage 2.04 ± 0.08% 0.38 0.01%, respectively, pH 4.47 0.13. became dominant microbiota during process. Twenty-eight-day-old then subjected to fermentation B. coagulans produce a simultaneous saccharification co-fermentation The enzymatic hydrolysis yield reached >96%. maximal concentration 18.54 0.52 g/L with substrate 5%, where 0.31 0.01 g/g DCS optical purity product >97%. Anaerobic is viable for pretreatment biomass production value-added chemicals.