首页|Efficient and practical bioconversion strategy of xylose-rich corncob for prebiotic Bacillus subtilis production
Efficient and practical bioconversion strategy of xylose-rich corncob for prebiotic Bacillus subtilis production
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NSTL
Elsevier
? 2022 Elsevier B.V.The probiotic of Bacillus subtilis (B.subtilis) is widely used in animal husbandry as a promising alternative to antibiotics, and a high value-added bioproduct from abundant and low-cost agricultural straws. For efficient fermentation of xylose-rich corncob slurry to B. subtilis cells, the step-by-step fermentation process (SSFP) and one-step fermentation process (OSFP) were proposed and compared by the combined technology of sulfuric acid pretreatment and enzymatic hydrolysis with cellulase. Xylose and glucose were fermented separately and sequentially in the SSFP route, while they were co-fermented in OSFP route. Here, B. subtilis performed an efficient bioconversion and almost fermented simultaneously glucose, xylose and arabinose in corncob slurry. We could obtain 326.8 g of B. subtilis in SSFP and 323.7 g probiotic cells in OSFP from 1000 g of corncob, respectively. In general, the OSFP route was preferable by virtue of a straightforward process and simple operation.
Bacillus subtilisCorncobOne-step fermentation process (OSFP)Simultaneous fermentationSulfuric acid pretreatment
Ma X.、Liu X.、Xu Y.
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Key Laboratory of Forestry Genetics & Biotechnology (Nanjing Forestry University) Ministry of Education
NSTL
Elsevier
