| Content of gamma-oryzanol and composition of steryl ferulates in brown rice (Oryza sativa L.) of European origin. | |
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MedLine Citation:
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PMID: 17032019 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The content of gamma-oryzanol and the composition of steryl ferulates were determined in brown rice of European origin using on-line coupled liquid chromatography-gas chromatography (LC-GC). Analysis of 30 brown rice samples of various cultivars, grown at different sites and in different seasons, revealed the gamma-oryzanol content to range from 26 to 63 mg/100 g. Cycloartenyl ferulate and 24-methylenecycloartanyl ferulate were the major components of gamma-oryzanol followed by campesteryl ferulate, campestanyl ferulate, and beta-sitosteryl ferulate. The proportions of individual steryl ferulates exhibited enormous variability. However, irrespectively of the great variations observed for single steryl ferulates, the proportions of the sum of 4,4'-dimethylsteryl ferulates (cycloartenyl ferulate, 24-methylenecycloartanyl ferulate) and the sum of 4-desmethylsteryl ferulates (campesteryl ferulate, campestanyl ferulate, and beta-sitosteryl ferulate) were rather constant. The significant natural variability observed for gamma-oryzanol content and composition of steryl ferulates were shown to be influenced by environmental conditions but not by the degree of maturity of rice grains. |
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Authors:
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Andreas Miller; Karl-Heinz Engel |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 54 ISSN: 0021-8561 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2006 Oct |
Date Detail:
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Created Date: 2006-10-11 Completed Date: 2006-12-01 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 8127-33 Citation Subset: IM |
Affiliation:
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Technische Universität München, Lehrstuhl für Allgemeine Lebensmitteltechnologie, Am Forum 2, D-85350 Freising-Weihenstephan, Germany. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Chromatography, Gas Chromatography, Liquid Coumaric Acids / analysis* Environment Europe Oryza sativa / chemistry* Phenylpropionates / analysis* Phytosterols / analysis* Seeds / chemistry*, growth & development |
| Chemical | |
Reg. No./Substance:
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0/Coumaric Acids; 0/Phenylpropionates; 0/Phytosterols; 11042-64-1/gamma-oryzanol; 1135-24-6/ferulic acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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