Journal
BIORESOURCE TECHNOLOGY
Volume 135, Issue -, Pages 475-480Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.09.096
Keywords
Bacillus sp.; 1.-Lactic acid; Steam-pretreated corn stover; Lignocellulosic hydrolyzates
Funding
- National Natural Science Foundation of China [31070513]
- Natural Science Foundation of Jiangsu Higher Education of China [10KJA22019]
- PAPD
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Highly efficient L-lactate production by a thermophilic strain Bacillus sp. NLO1 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, 56.37 gl(-1) L-lactic acid was obtained from lignocellulosic hydrolyzates which contained the solid residues produced in enzymatic saccharification. In fed-batch fermentation, 75.03 gl(-1) L-lactic acid was obtained from lignocellulosic hydrolyzates supernatant. The yield was 74.5% and the average productivity was 1.04 g l(-1) h(-1). Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
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