کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
681155 | 1460006 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Propionic acid production in glycerol/glucose co-fermentation by Propionibacterium freudenreichii subsp. shermanii
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Propionic acid production in glycerol/glucose co-fermentation by Propionibacterium freudenreichii subsp. shermanii Propionic acid production in glycerol/glucose co-fermentation by Propionibacterium freudenreichii subsp. shermanii](/preview/png/681155.png)
چکیده انگلیسی
Propionibacterium freudenreichii subsp. shermanii can ferment glucose and glycerol to propionic acid with acetic and succinic acids as two by-products. Propionic acid production from glucose was relatively fast (0.19Â g/LÂ h) but gave low product yield (â¼0.39Â g/g) and selectivity (P/A: â¼2.6; P/S: â¼4.8). In contrast, glycerol with a more reduced state gave a high propionic acid yield (â¼0.65Â g/g) and selectivity (P/A: â¼31; P/S: â¼11) but low productivity (0.11Â g/LÂ h). On the other hand, co-fermentation of glycerol and glucose at an appropriate mass ratio gave both a high yield (0.54-0.65Â g/g) and productivity (0.18-0.23Â g/LÂ h) with high product selectivity (P/A: â¼14; P/S: â¼10). The carbon flux distributions in the co-fermentation as affected by the ratio of glycerol/glucose were investigated. Finally, co-fermentation with cassava bagasse hydrolysate and crude glycerol in a fibrous-bed bioreactor was demonstrated, providing an efficient way for economic production of bio-based propionic acid.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 137, June 2013, Pages 116-123
Journal: Bioresource Technology - Volume 137, June 2013, Pages 116-123
نویسندگان
Zhongqiang Wang, Shang-Tian Yang,