BioChem - DOS

Open fermentative production of L-lactic acid by Bacillus sp. strain NL01 using lignocellulosic hydrolyzates as low-cost raw material

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Ouyang, J.; Ma, R.; Zheng, Z.; Cai, C.; Zhang, M.; Jiang, T.

Highly efficient l-lactate production by a thermophilic strain Bacillus sp. NL01 was demonstrated in this study. Lignocellulosic hydrolyzates containing a high content of glucose, which was prepared from corn stover, was used as substrate for l-lactic acid production. The fermentation was carried out under open condition without sterilization and used NaOH as alkaline neutralizing reagent. In batch fermentation, 56.37gl<SUP>-1</SUP>l-lactic acid was obtained from lignocellulosic hydrolyzates which contained the solid residues produced in enzymatic saccharification. In fed-batch fermentation, 75.03gl<SUP>-1</SUP>l-lactic acid was obtained from lignocellulosic hydrolyzates supernatant. The yield was 74.5% and the average productivity was 1.04gl<SUP>-1</SUP>h<SUP>-1</SUP>.

2013

Elsevier Applied Science

0960-8524

135

pp.475-480

10.1016/j.biortech.2012.09.096

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART65836491

Bacillus sp.; l-Lactic acid; Steam-pretreated corn stover; Lignocellulosic hydrolyzates