| Antibacterial activity of ozone-depolymerized crawfish chitosan. | |
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MedLine Citation:
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PMID: 19019121 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Antimicrobial activities of chitosan samples with different molecular weights (1333, 432, 201, 131, and 104 kDa) prepared by ozone treatment were examined against 2 Gram-positive bacteria (Listeria monocytogenes and Staphylococcus aureus) and 2 Gram-negative bacteria (Escherichia coli and Pseudomonas fluorescen) to investigate the effect of chitosan's molecular weight and concentration on the inhibition of bacterial growth. Antimicrobial activity of chitosan varied depending on the molecular weight, concentration of chitosan, and type of microorganism. Generally, the effectiveness of the chitosans significantly increased with increasing chitosan concentration, regardless of molecular size and types of bacteria. Chitosan with molecular weights ranging from 104 to 201 kDa showed relatively greater antimicrobial activity against L. monocytogenes, S. aureus, and P. fluorescen; whereas for E. coli, intermediate molecular weight chitosan was more effective in growth inhibition than lower or higher molecular weight chitosan particularly at 0.1% concentration. |
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Authors:
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S Seo; J M King; W Prinyawiwatkul; M Janes |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of food science Volume: 73 ISSN: 1750-3841 ISO Abbreviation: J. Food Sci. Publication Date: 2008 Oct |
Date Detail:
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Created Date: 2008-11-21 Completed Date: 2009-01-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0014052 Medline TA: J Food Sci Country: United States |
Other Details:
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Languages: eng Pagination: M400-4 Citation Subset: IM |
Affiliation:
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Dept. of Food Science, 111 Food Science Bldg., Louisiana State Univ. Agricultural Center, Baton Rouge, LA 70803, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Anti-Bacterial Agents / pharmacology* Astacoidea / chemistry* Chitosan / chemistry, pharmacology* Escherichia coli / drug effects Listeria monocytogenes / drug effects Molecular Weight Ozone / chemistry* Polymers / chemistry* Pseudomonas fluorescens / drug effects Staphylococcus aureus / drug effects Viscosity |
| Chemical | |
Reg. No./Substance:
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0/Anti-Bacterial Agents; 0/Polymers; 10028-15-6/Ozone; 9012-76-4/Chitosan |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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