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Determination of products derived from trans-resveratrol UV photoisomerisation by means of HPLC–APCI-MS

Paper ID Volume ID Publish Year Pages File Format Full-Text
28714 44087 2008 7 PDF Available
Title
Determination of products derived from trans-resveratrol UV photoisomerisation by means of HPLC–APCI-MS
Abstract

Resveratrol, a phenolic compound found in plant tissues, berries, and wine exists in trans and cis stereo isomeric forms. Naturally, due to differences in energetic state the trans form is the more common, but in wines the cis form is also present, resulting from photoisomerisation reactions. It is thought that from this reaction the only product arising is the cis-resveratrol. After UV irradiation of the trans-resveratrol solution for 10 min a third component appears with a growing concentration till 1 h of irradiation. From the MS/MS results we can assert that this compound is a product derived from oxidation, where the double bond at the centre of the resveratrol molecule, changes into a triple bond, forming a diphenylacetylene derivative (3,4′,5-trihydroxy-diphenylacetylene).

Keywords
LC MS/MS; Stilbene; Resveratrol; Photoisomerisation; 3,4′,5-Trihydroxy-diphenylacetylene
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Determination of products derived from trans-resveratrol UV photoisomerisation by means of HPLC–APCI-MS
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 196, Issue 1, 30 April 2008, Pages 44–50
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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