Document Detail

Chitosan production from hemicellulose hydrolysate of corn straw: impact of degradation products on Rhizopus oryzae growth and chitosan fermentation.
MedLine Citation:
PMID:  20636326     Owner:  NLM     Status:  MEDLINE    
AIMS: To examine the potential use of hemicellulose hydrolysate (HH) for the production of chitosan by Rhizopus oryzae and investigate the influence of contents in HH on mycelia growth and chitosan synthesis.
METHODS AND RESULTS: Compared to xylose medium, HH enhanced mycelia growth, chitosan content and production of R. oryzae by 10.2, 64.5 and 82.1%, respectively. During sulfuric acid hydrolysis of corn straw, sugars (glucose, galactose, etc) and inhibitors (formic acid, acetic acid and furfural) were generated. Acetic acid (2.14 g l(-1)) and formic acid (0.83 g l(-1)) were stimulative, while furfural (0.55 g l(-1)) was inhibitory. Inhibitors, at different concentrations, increased the mycelia growth and chitosan production by 24.5-37.8 and 60.1-207.1%.
CONCLUSIONS: HH of corn straw is a good source for chitosan production. Inhibitors in HH, at proper concentrations, can enhance chitosan production greatly.
SIGNIFICANCE AND IMPACT OF THE STUDY: This work for the first time reported chitosan production from HH. Chitosan production can be greatly enhanced by cheap chemicals such as inhibitors in HH.
C Tai; S Li; Q Xu; H Ying; H Huang; P Ouyang
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-06-25
Journal Detail:
Title:  Letters in applied microbiology     Volume:  51     ISSN:  1472-765X     ISO Abbreviation:  Lett. Appl. Microbiol.     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-08-18     Completed Date:  2010-11-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8510094     Medline TA:  Lett Appl Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  278-84     Citation Subset:  IM    
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing, China.
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MeSH Terms
Acetic Acid / pharmacology
Chitosan / metabolism*
Culture Media / chemistry
Formic Acids / pharmacology
Furaldehyde / pharmacology
Growth Inhibitors / pharmacology
Intercellular Signaling Peptides and Proteins / pharmacology
Mycelium / growth & development
Polysaccharides / metabolism*
Rhizopus / growth & development*,  metabolism*
Sulfuric Acids / metabolism
Xylose / metabolism
Zea mays / metabolism*
Reg. No./Substance:
0/Culture Media; 0/Formic Acids; 0/Growth Inhibitors; 0/Intercellular Signaling Peptides and Proteins; 0/Polysaccharides; 0/Sulfuric Acids; 0/Xylose; 64-18-6/formic acid; 64-19-7/Acetic Acid; 7664-93-9/sulfuric acid; 8024-50-8/hemicellulose; 9012-76-4/Chitosan; 98-01-1/Furaldehyde

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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