| A new approach for extension of the identification period of irradiated cellulose-containing foodstuffs by EPR spectroscopy. | |
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MedLine Citation:
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PMID: 10697727 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We report on the possibility of identification by EPR spectroscopy of some irradiated cellulose-containing foodstuffs, at a relatively long time after the irradiation, when the characteristic EPR spectral lines of the cellulose free radical have essentially disappeared. In such cases rather expensive and time-consuming methods (e.g. thermoluminescence analysis) have to be applied. The present communication demonstrates with some pre-irradiated spices, dried medicinal and sweet herbs that simply heating the samples to 60 degrees C for one hour leads to a significant (50% or more) decrease of the EPR intensity of the remaining central line of the samples. For comparison, the loss in the intensity of the same line upon heating non-irradiated samples at 60 degrees C for one hour was only about 10%. This inexpensive new procedure will extend the post-irradiation period in which EPR can be used for distinguishing irradiated from non-irradiated samples, of certain cellulose-containing foodstuffs. |
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Authors:
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N D Yordanov; V Gancheva |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine Volume: 52 ISSN: 0969-8043 ISO Abbreviation: Appl Radiat Isot Publication Date: 2000 Feb |
Date Detail:
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Created Date: 2000-03-31 Completed Date: 2000-03-31 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9306253 Medline TA: Appl Radiat Isot Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 195-8 Citation Subset: IM |
Affiliation:
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Institute of Catalysis, Bulgarian Academy of Sciences, Sofia, Bulgaria. ndyepr@bas.bg |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Angiosperms Cellulose / analysis* Electron Spin Resonance Spectroscopy / methods Food Analysis / methods* Food Irradiation* Hot Temperature Plants, Medicinal Spices |
| Chemical | |
Reg. No./Substance:
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9004-34-6/Cellulose |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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