کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7068050 | 1459888 | 2018 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bioflocculants' production from a cellulase-free xylanase-producing Pseudomonas boreopolis G22 by degrading biomass and its application in cost-effective harvest of microalgae
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The major problem for industrial application of bioflocculants is its high production cost. Here, a novel bacterium Pseudomonas boreopolis G22, which can secret a cellulase-free xylanase and simultaneously produce bioflocculants (MBF-G22) through directly converting untreated biomass, was isolated. The bioflocculants' production of G22 was closely related to its xylanase activity, hydrolysis ability of biomass and the hemicellulose loss caused by G22. The optimal fermentation conditions with the highest bioflocculants' yield (3.75â¯mgâ¯gâ1 dry biomass) were obtained at the fermentation time of 96â¯h, incubation temperature of 30â¯Â°C, inoculum concentration of 1.0% and biomass concentration of 1.0% in an initial pH value of 7.0. MBF-G22 mainly consisted of polysaccharides (63.3%) with a molecular weight of 3.982â¯Ãâ¯106â¯Da and showed the highest flocculating efficiency of 97.1% at a dosage of 3.5â¯mgâ¯Lâ1. In addition, MBF-G22 showed high flocculating efficiency of microalgae (95.7%) at a dosage of 80â¯mgâ¯Lâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 255, May 2018, Pages 171-179
Journal: Bioresource Technology - Volume 255, May 2018, Pages 171-179
نویسندگان
Haipeng Guo, Chuntao Hong, Cheng Zhang, Bingsong Zheng, Dean Jiang, Wensheng Qin,