| Green and economical production of propionic acid by Propionibacterium freudenreichii CCTCC M207015 in plant fibrous-bed bioreactor. | |
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MedLine Citation:
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PMID: 21421303 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Propionic acid production by Propionibacterium freudenreichii from molasses and waste propionibacterium cells was studied in plant fibrous-bed bioreactor (PFB). With non-treated molasses as carbon source, 12.69±0.40gl(-1) of propionic acid was attained at 120h in free-cell fermentation, whereas the PFB fermentation yielded 41.22±2.06gl(-1) at 120h and faster cells growth was observed. In order to optimize the fermentation outcomes, fed-batch fermentation was performed with hydrolyzed molasses in PFB, giving 91.89±4.59gl(-1) of propionic acid at 254h. Further studies were carried out using hydrolyzed waste propionibacterium cells as substitute nitrogen source, resulting in a propionic acid concentration of 79.81±3.99gl(-1) at 302h. The present study suggests that the low-cost molasses and waste propionibacterium cells can be utilized for the green and economical production of propionic acid by P. freudenreichii. |
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Authors:
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Xiaohai Feng; Fei Chen; Hong Xu; Bo Wu; Hui Li; Sha Li; Pingkai Ouyang |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-2-24 |
Journal Detail:
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Title: Bioresource technology Volume: - ISSN: 1873-2976 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-3-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 210009, PR China; College of Food Science and Light Industry, Nanjing University of Technology, Nanjing 210009, PR China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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