| Chemical force mapping of phosphate and carbon on acid-modified tapioca starch surface. | |
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MedLine Citation:
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PMID: 19022283 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Surface chemical microstructure of hydrochloric acid hydrolyzed tapioca starch producing different amylose:amylopectin (Am:Ap) ratios were studied with scanning chemical force microscopy (CFM). The chemical force probes were functionalized of two types with -OH (phosphate specific) and -CH3 (carbon specific). Lateral force trace-minus-retrace (TMR) images from -OH and -CH3 probes revealed changes in the phosphate domains and the carbon backbone for the varying acid hydrolyzed tapioca starch compared to that of the native tapioca starch. Scanning electron micrographs (SEM) showed different degree of the granule surface disruption before and after hydrolysis. The exterior structures of the acid hydrolyzed starch granules were chemically investigated with CFM to study the relationships of the surface molecular structures and the Am:Ap ratios. |
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Authors:
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Karntarat Wuttisela; Wannapong Triampo; Darapond Triampo |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-10-30 |
Journal Detail:
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Title: International journal of biological macromolecules Volume: 44 ISSN: 0141-8130 ISO Abbreviation: Int. J. Biol. Macromol. Publication Date: 2009 Jan |
Date Detail:
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Created Date: 2008-12-29 Completed Date: 2009-03-26 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7909578 Medline TA: Int J Biol Macromol Country: England |
Other Details:
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Languages: eng Pagination: 86-91 Citation Subset: IM |
Affiliation:
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Institute for Innovation and Development of Learning Process, Department of Physics, Mahidol University, Salaya Campus, Phuttamonthon Sai 4 Rd., Nakhon Pathom 73170, Thailand. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Carbon
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chemistry* Hydrochloric Acid Hydrolysis Manihot / chemistry* Microscopy, Atomic Force Microscopy, Electron, Scanning Phosphates / chemistry* Starch / chemistry*, ultrastructure |
| Chemical | |
Reg. No./Substance:
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0/Phosphates; 7440-44-0/Carbon; 7647-01-0/Hydrochloric Acid; 9005-25-8/Starch |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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