title: Efficient production of L-lactic acid from corncob molasses, a waste by-product in xylitol production, by a newly isolated xylose utilizing Bacillus sp. strain.
abstract: Lignocellulosic biomass-derived sugars are considered nowadays to be an economically attractive carbohydrate feedstock for large-scale fermentations of bulk chemicals such as lactic acid. In the present study, corncob molasses containing a high content of xylose, which is one of the lignocellulosic biomasses and a waste by-product from xylitol production, was used for L-lactic acid production via a newly isolated xylose utilizing Bacillus sp. strain XZL9. Bacillus sp. strain XZL9 can utilize the mixture of sugars including xylose, arabinose, and glucose in corncob molasses for L-lactic acid production. High concentration of L-lactic acid (74.7 g l⁻¹) was obtained from corncob molasses (initial total sugars of 91.4 g l⁻¹) in fed-batch fermentation. This study provides an encouraging means of producing L-lactic acid from lignocellulosic resource such as the low-cost corncob molasses.
authors.affiliation: Institute of Microbiology, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: Limin
authors.initials: L
authors.lastname: Wang
authors.forename: Bo
authors.initials: B
authors.lastname: Zhao
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.forename: Bo
authors.initials: B
authors.lastname: Yu
authors.forename: Cuiqing
authors.initials: C
authors.lastname: Ma
authors.forename: Fei
authors.initials: F
authors.lastname: Su
authors.forename: Dongliang
authors.initials: D
authors.lastname: Hua
authors.forename: Qinggang
authors.initials: Q
authors.lastname: Li
authors.forename: Yanhe
authors.initials: Y
authors.lastname: Ma
authors.forename: Ping
authors.initials: P
authors.lastname: Xu
mesh_terms: D001407:Bacillus / Q000378:metabolism*; D005285:Fermentation; D005947:Glucose / Q000378:metabolism; D019344:Lactic Acid / Q000378:metabolism*; D008965:Molasses; D014993:Xylitol / Q000378:metabolism*; D014994:Xylose / Q000378:metabolism*; D003313:Zea mays / Q000378:metabolism*
chemical_list: D019344:Lactic Acid; D014994:Xylose; D005947:Glucose; D014993:Xylitol