Measuring thiols in single cultivar South African red wines using 4,4-dithiodipyridine (DTDP) derivatization and ultraperformance convergence chromatography-tandem mass spectrometry

Simple item page
dc.contributor.authorMafata, Mphoen_ZA
dc.contributor.authorStander, Maria A.en_ZA
dc.contributor.authorThomachot, Baptisteen_ZA
dc.contributor.authorBuica, Astriden_ZA
dc.date.accessioned2019-09-20T10:03:04Z
dc.date.available2019-09-20T10:03:04Z
dc.date.issued2018-08-30
dc.descriptionCITATION: Mafata, M., et al. 2018. Measuring thiols in single cultivar South African red wines using 4,4-dithiodipyridine (DTDP) derivatization and ultraperformance convergence chromatography-tandem mass spectrometry. Foods, 7(9):138, doi:10.3390/foods7090138.en_ZA
dc.descriptionThe original publication is available at https://www.mdpi.comen_ZA
dc.description.abstractWine varietal thiols are important contributors to wine aroma. The chemical nature of thiols makes them difficult to measure due to low concentrations, high sensitivity to oxidation, and low ionization. Methods for the measurement of thiols usually consist of multiple steps of sample preparation followed by instrumental measurement. Studies have collected large datasets of thiols in white wine but not in red wine, due to the lack of availability of suitable methods. In this study, for the first time, convergence chromatography was used to measure thiols in red wine at ultratrace levels with improved sensitivity compared to previous methods. Performance parameters (selectivity, linearity, limits of detection, precision, accuracy) were tested to demonstrate the suitability of the method for the proposed application. Red wine thiols were measured in South African Pinotage, Shiraz, and Cabernet Sauvignon wines (n = 16 each). Cultivar differentiation using the thiol profile was demonstrated.en_ZA
dc.description.urihttps://www.mdpi.com/2304-8158/7/9/138
dc.description.versionPublisher's versionen_ZA
dc.format.extent10 pages : illustrationsen_ZA
dc.identifier.citationMafata, M., et al. 2018. Measuring thiols in single cultivar South African red wines using 4,4-dithiodipyridine (DTDP) derivatization and ultraperformance convergence chromatography-tandem mass spectrometry. Foods, 7(9):138, doi:10.3390/foods7090138en_ZA
dc.identifier.issn2304-8158 (online)
dc.identifier.otherdoi:10.3390/foods7090138
dc.identifier.urihttp://hdl.handle.net/10019.1/106506
dc.language.isoen_ZAen_ZA
dc.publisherMDPIen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectWine thiolsen_ZA
dc.subjectWine and wine makingen_ZA
dc.subjectWine -- Flavor and odoren_ZA
dc.subjectRed wine -- South Africaen_ZA
dc.subjectConvergence chromatographyen_ZA
dc.titleMeasuring thiols in single cultivar South African red wines using 4,4-dithiodipyridine (DTDP) derivatization and ultraperformance convergence chromatography-tandem mass spectrometryen_ZA
dc.typeArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
mafata_measuring_2018.pdf
Size:
924.39 KB
Format:
Adobe Portable Document Format
Description:
Download article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Articles (Viticulture and Oenology)