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https://hdl.handle.net/2440/13053
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Type: | Journal article |
Title: | Determination of oak lactones in barrel-aged wines and in oak extracts by stable isotope dilution analysis |
Author: | Pollnitz, A. Jones, G. Sefton, M. |
Citation: | Journal of Chromatography A, 1999; 857(1-2):239-246 |
Publisher: | Elsevier BV |
Issue Date: | 1999 |
ISSN: | 0021-9673 1873-3778 |
Statement of Responsibility: | Alan P Pollnitz, Graham P Jones, Mark A Sefton |
Abstract: | The cis- and trans-isomers of 5-butyl-4-methyl-4,5-dihydro-2(3H)-furanone, the so-called oak lactones, are derived from oakwood, and the cis-isomer is an important contributor to wine flavour. Their deuterium-labelled forms, [2H4]cis-oak lactone and [2H4]trans-oak lactone, were synthesised from the unlabelled analogues, and were utilised in a new method employing gas chromatography-mass spectrometry to determine the concentration of these compounds in wine or extracts of oak shavings in a single analysis. The method can employ either liquid-liquid extraction or solid-phase microextraction, and is both rapid and accurate. There was some artefactual generation of cis-oak lactone during the analysis of model wine extracts of unheated oak shavings when diethyl ether extraction and injector block temperatures at or above 225 degrees C were employed. |
Keywords: | Wood; Wine; Food analysis; Butylmethyldihydrofuranones; Oak lactones |
Rights: | © 1999 Elsevier Science B.V. All rights reserved. |
DOI: | 10.1016/S0021-9673(99)00785-2 |
Published version: | http://dx.doi.org/10.1016/s0021-9673(99)00785-2 |
Appears in Collections: | Aurora harvest 7 Wine Science publications |
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