GAS CHROMATOGRAPHY COUPLED WITH MASS SPECTROMETRY DETECTION FOR THE VOLATILE PROFILING OF <i>VITIS VINIFERA</i> CV. CARMENERE WINES

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dc.contributor.authorMaria Dominguez, Ana
dc.contributor.authorAgosin, Eduardo
dc.date.accessioned2025-01-21T00:04:58Z
dc.date.available2025-01-21T00:04:58Z
dc.date.issued2010
dc.description.abstractThe volatile metabolome of Vitis vinifera C.V. Carmenere wines, a unique Chilean winegrape variety, was characterized in this work. After solvent extraction with dichloromethane (LLE) or head space solid phase microextraction (HS-SPME), the resulting volatile compounds were analyzed by gas chromatography-mass spectrometry (GC-MS). Specific methods were carried out too for the determination of methoxypyrazines and thiols. Almost 150 compounds corresponding to aliphatic and aromatic alcohols, organic acids, acetate and ethyl esters, lactones, terpenes, norisoprenoids, pyrazines, thiols and phenolic compounds were found in these wines. Both extraction techniques were complementary; HS-SPME allowed to identify several important compounds that were not detected by liquid-liquid solvent extraction, in particular b-damascenone, nerol idol, citronellol, linalool, ethyl 2-methyl-butyrate and geranyl acetone. Several varietal volatile compounds with significant odorant properties were also identified: 3-mercaptohexyl acetate (3MHA), 3-mercaptohexan-1-ol (3MH), benzenemethanethiol (BM), 2-furanmethanethiol (2FM); and 2-isobutyl-3-methoxypyrazine (IBMP) while 2-isopropyl-3-methoxypyrazine (IPMP) and 4-mercapto-4-methylpentan-2-one (4MMP) were not detected. Twenty two of these compounds, including b-damascenone, several thiols, ethyl octanoate, 2-phenylethanol, and 2-isobutyl-3-methoxypyrazine, showed significant odor activities values (OAV), and were clearly related with the cooked fruits, berries-like and herbaceous notes characteristic of Carmenere wines. Olfactometric techniques are underway to validate the sensory impact of these compounds.
dc.description.funderCONICYT-FONDECYT
dc.fuente.origenWOS
dc.identifier.issn0717-9707
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95528
dc.identifier.wosidWOS:000283404400025
dc.issue.numero3
dc.language.isoen
dc.pagina.final391
dc.pagina.inicio385
dc.revistaJournal of the chilean chemical society
dc.rightsacceso restringido
dc.titleGAS CHROMATOGRAPHY COUPLED WITH MASS SPECTROMETRY DETECTION FOR THE VOLATILE PROFILING OF <i>VITIS VINIFERA</i> CV. CARMENERE WINES
dc.typeartículo
dc.volumen55
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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