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Content Provider | World Health Organization (WHO)-Global Index Medicus |
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Author | Liu, Guodong Han, Xiaolong Yang, Piao Song, Wenxia Li, Zhonghai Qu, Yinbo |
Description | Country affiliation: China Author Affiliation: Han X ( State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, China.); Song W ( School of Life Science, Qufu Normal University, Qufu 273165, China.); Liu G ( State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, China.); Li Z ( Department of Bioengineering, Qilu University of Technology, Jinan 250353, China.); Yang P ( State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, China.); Qu Y ( State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, China. Electronic address: quyinbo@sdu.edu.cn.) |
Abstract | Medium optimization and repeated fed-batch fermentation were performed to improve the cellulase productivity by P. oxalicum RE-10 in submerged fermentation. First, Plackett-Burman design (PBD) and central composite design (CCD) were used to optimize the medium for cellulase production. PBD demonstrated wheat bran and NaNO had significant influences on cellulase production. The CCD results showed the maximum filter paper activity (FPA) production of 8.61U/mL could be achieved in Erlenmeyer flasks. The maximal FPA reached 12.69U/mL by submerged batch fermentation in a 7.5-L stirred tank, 1.76-fold higher than that on the original medium. Then, the repeated fed-batch fermentation strategy was performed successfully for increasing the cellulase productivity from 105.75U/L/h in batch fermentation to 158.38U/L/h. The cellulase activity and the glucan conversion of delignined corn cob residue hydrolysis had no significant difference between the enzymes sampled from different cycles of the repeated fed-batch fermentation and that from batch culture. |
ISSN | 09608524 |
Volume Number | 227 |
e-ISSN | 18732976 |
Journal | Bioresource Technology |
Language | English |
Publisher | Elsevier |
Publisher Date | 2017-03-01 |
Publisher Place | Great Britain (UK) |
Access Restriction | Subscribed |
Subject Keyword | Batch Cell Culture Techniques Methods Penicillium Metabolism Cellulase Culture Media Chemistry Dietary Fiber Fermentation Hydrolysis Nitrates Zea Mays Journal Article Discipline Bioresource |
Content Type | Text |
Resource Type | Article |
Subject Domain (in MeSH) | Eukaryota Inorganic Chemicals Enzymes and Coenzymes Chemical Actions and Uses Investigative Techniques Chemical Phenomena Physiological Phenomena |
Subject | Bioengineering Renewable Energy, Sustainability and the Environment Waste Management and Disposal Environmental Engineering Medicine |
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