کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
682174 | 888976 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A novel strategy for integrated utilization of Jerusalem artichoke stalk and tuber for production of 2,3-butanediol by Klebsiella pneumoniae
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
Jerusalem artichoke stalk and tuber can serve as a low cost feedstock for the production of 2,3-butanediol. However, like other lignocellulosic materials, the sugar concentration in the hydrolysate prepared from Jerusalem artichoke stalk is too low to be utilized effectively by microorganisms. In this paper a novel strategy was proposed to increase the sugar concentration by adding Jerusalem artichoke tuber into the hydrolysate of the stalk. The sugar was then biotransformed into high-valued 2,3-butanediol by Klebsiella pneumoniae. Fed-batch simultaneous saccharification and fermentation (SSF) was effectively performed and 901.2Â mmol/l (80.5Â g/l) target products (2,3-butanediol plus acetoin) was obtained in 68Â h by a stage-shift aeration strategy. The concentration, yield and productivity of target products were 16.9%, 16.8% and 23.4%, respectively, higher than the best results obtained with SSF operated under constant aeration. This showed that adding tuber to the stalk hydrolysate was a useful strategy for increasing the production of 2,3-butanediol from Jerusalem artichoke via fermentation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 101, Issue 21, November 2010, Pages 8342-8347
Journal: Bioresource Technology - Volume 101, Issue 21, November 2010, Pages 8342-8347
نویسندگان
Dan Li, Jian-Ying Dai, Zhi-Long Xiu,