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

Bioresource Technology
Limin WangPing Xu

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.

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Citations

Jun 12, 2013·Applied Microbiology and Biotechnology·Rossana LiguoriVincenza Faraco
Mar 19, 2011·Applied Biochemistry and Biotechnology·Sitanan ThitiprasertNuttha Thongchul
Jan 5, 2011·Applied and Environmental Microbiology·Mohamed Ali Abdel-RahmanKenji Sonomoto
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Dec 3, 2014·Bioresource Technology·Maraike ProbstHeribert Insam
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