Quantitative analysis, occurrence, and stability of (E)-1-(2,3,6-trimethylphenyl)buta-1,3-diene in wine

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dc.contributor.authorCox, A.
dc.contributor.authorCapone, D.
dc.contributor.authorElsey, G.
dc.contributor.authorPerkins, M.
dc.contributor.authorSefton, M.
dc.date.issued2005
dc.description.abstractA stable isotope dilution assay has been developed for quantification of (E)-1-(2,3,6-trimethylphenyl)buta-1,3-diene (4) in wine using a [2H6]-analogue. Using this method, 4 was found in 96 out of 97 white wines, but in none of 12 red wines analyzed. 4 was found to be most prevalent in Semillon wines, followed by Chardonnay, with Riesling showing the least amount of 4 among these three varieties. 4, like 1,1,6-trimethyldihydronaphthalene (TDN, 3), appears to be formed during the aging process. 4 was found to be unstable in model wine, and in both white and red wine, with the order of stability being model > white > red. In a PVPP-stripped red wine, the rate of degradation of 4 was substantially lessened, with the final concentrations very close to those observed in model wine. When treated with either grape or wine tannin extracts in model wine, the concentration of 4 was found to decrease to levels very close to those observed with an untreated red wine. When white wine was heated at 45 °C, 4 was formed, indicating the presence of precursor forms. The amounts formed were much higher than those found in a commercial white wine. 4 was also observed in red wine heated to 45 °C, but the concentration produced was much less than that with white wine.
dc.description.statementofresponsibilityAgnieszka Cox, Dimitra L. Capone, Gordon M. Elsey, Michael V. Perkins, and Mark A. Sefton
dc.identifier.citationJournal of Agricultural and Food Chemistry, 2005; 53(9):3584-3591
dc.identifier.doi10.1021/jf0479057
dc.identifier.issn0021-8561
dc.identifier.issn1520-5118
dc.identifier.orcidCapone, D. [0000-0003-4424-0746]
dc.identifier.urihttp://hdl.handle.net/2440/55909
dc.language.isoen
dc.publisherAmer Chemical Soc
dc.source.urihttps://doi.org/10.1021/jf0479057
dc.subjectTPB
dc.subjectSIDA
dc.subjectpolyphenols
dc.titleQuantitative analysis, occurrence, and stability of (E)-1-(2,3,6-trimethylphenyl)buta-1,3-diene in wine
dc.typeJournal article
pubs.publication-statusPublished

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