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Type: Journal article
Title: An odour detection threshold determination of all four possible stereoisomers of oak lactone in a white and a red wine
Author: Brown, R.
Sefton, M.
Taylor, D.
Elsey, G.
Citation: Australian Journal of Grape and Wine Research, 2006; 12(2):115-118
Publisher: Australian Society of Viticulture and Oenology
Issue Date: 2006
ISSN: 1322-7130
Statement of
Rachel C. Brown, Mark A. Sefton, Dennis K. Taylor and Gordon M. Elsey
Abstract: Odour detection thresholds were determined for all four stereoisomers of oak lactone in both red and white wine. The natural cis-isomer was found to have a significantly lower detection threshold than its non-natural enantiomer in both media, and lower than indicated by most other sensory studies. The odour detection threshold for the natural trans-isomer was seven times higher than for the natural cis. Compared to its enantiomer, the natural trans-isomer had a lower detection threshold in the white wine medium, but slightly higher in the red. Duo-trio difference testing between the two trans-isomers added at the same concentration showed no significant difference between the two for both media. Similarly, a duo-trio test conducted between the natural cis-isomer and a mixture of the same amount of natural cis-oak lactone plus an equivalent concentration of the trans-isomer indicated that the latter had little or no influence on the odour impact of the cis-form.
Keywords: oak; oak lactone; whiskey lactone; odour; detection thresholds; difference tests
Description: Copyright © 2008 Australian Society of Viticulture and Oenology Inc.
RMID: 0020061027
DOI: 10.1111/j.1755-0238.2006.tb00050.x
Published version:
Appears in Collections:Agriculture, Food and Wine publications

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