| Surface structure of chitosan and hybrid chitosan-amylose films-restoration of the antibacterial properties of chitosan in the amylose film. | |
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MedLine Citation:
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PMID: 17669384 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The surface structure of films prepared by casting aqueous solutions of mixtures of water soluble chitosan (WSC) and amylose as well as a fully deacetylated chitosan was studied. Zeta potential measurements indicated that the surface of WSC and fully deacetylated chitosan films is positively charged but very weakly, whereas, a film of amylose blended with WSC exhibited an obvious positive charge. X-ray photoelectron spectra of these films suggest that less amino groups are exposed on the surface of WSC and fully deacetylated chitosan films, whereas, more amino groups are exposed on the surface of a WSC film blended with amylose. A sheet structure in which free amino groups are less exposed on the surface of the film of WSC or fully deacetylated chitosan is proposed. This accounts for the loss of antibacterial activity of chitosan on the WSC film surface. When blended with amylose, the morphology of the film may be disrupted, resulting in strong antibacterial properties. |
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Authors:
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Shiho Suzuki; Bo Ying; Hideki Yamane; Hideki Tachi; Katsumasa Shimahashi; Kozo Ogawa; Shinichi Kitamura |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2007-07-18 |
Journal Detail:
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Title: Carbohydrate research Volume: 342 ISSN: 0008-6215 ISO Abbreviation: Carbohydr. Res. Publication Date: 2007 Nov |
Date Detail:
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Created Date: 2007-09-24 Completed Date: 2007-12-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0043535 Medline TA: Carbohydr Res Country: Netherlands |
Other Details:
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Languages: eng Pagination: 2490-3 Citation Subset: IM |
Affiliation:
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Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Amylose
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chemistry*,
metabolism* Anti-Bacterial Agents / chemistry*, pharmacology Chitosan / chemistry*, pharmacology Spectrum Analysis Surface Properties X-Rays |
| Chemical | |
Reg. No./Substance:
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0/Anti-Bacterial Agents; 9005-82-7/Amylose; 9012-76-4/Chitosan |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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