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https://hdl.handle.net/2440/87629
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Type: | Journal article |
Title: | Evolution and occurrence of 1,8-Cineole (eucalyptol) in Australian wine |
Author: | Capone, D. van Leeuwen, K. Taylor, D. Jeffery, D. Pardon, K. Elsey, G. Sefton, M. |
Citation: | Journal of Agricultural and Food Chemistry, 2011; 59(3):953-959 |
Publisher: | American Chemical Society |
Issue Date: | 2011 |
ISSN: | 0021-8561 1520-5118 |
Statement of Responsibility: | Dimitra L. Capone, Katryna Van Leeuwen, Dennis K. Taylor, David W. Jeffery, Kevin H. Pardon, Gordon M. Elsey and Mark A. Sefton |
Abstract: | A new method has been developed for the quantitation of 1,8-cineole in red and white wines using headspace solid-phase microextraction (SPME) combined with stable isotope dilution analysis (SIDA) and gas chromatography−mass spectrometry (GC-MS). An extensive survey of Australian wines (44 white and 146 red) highlighted that only red wines contained significant amounts of 1,8-cineole (up to 20 μg/L). Hydrolytic studies with limonene and α-terpineol, putative precursors to 1,8-cineole, showed a very low conversion into 1,8-cineole (<0.6%) over a 2 year period, which does not account for the difference between white and red wines. 1,8-Cineole was chemically stable in model wine solution over 2 years, and absorption from a Shiraz wine by bottle closures was most evident for a synthetic closure only (14% absorption after 1 year). Two commercial ferments at two different locations were monitored daily to investigate the evolution of 1,8-cineole throughout fermentation. Both ferments showed daily increases in 1,8-cineole concentration while in contact with grape solids, but this accumulation ceased immediately after pressing. This observation is consistent with the extraction of 1,8-cineole into the ferment from the solid portions of the grape berries. |
Keywords: | Wine aroma; 1,8-cineole; eucalyptol; SPME; SIDA; GC-MS |
Rights: | © 2011 American Chemical Society |
DOI: | 10.1021/jf1038212 |
Published version: | http://dx.doi.org/10.1021/jf1038212 |
Appears in Collections: | Agriculture, Food and Wine publications Aurora harvest 7 |
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