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Foods 2018, 7(2), 27; doi:10.3390/foods7020027

Free Monoterpene Isomer Profiles of Vitis Vinifera L. cv. White Wines

Department of Food Science & Technology, Oregon State University, Corvallis, OR 97331, USA
Department of Statistics, Oregon State University, Corvallis, OR 97331, USA
Author to whom correspondence should be addressed.
Received: 26 January 2018 / Revised: 13 February 2018 / Accepted: 17 February 2018 / Published: 21 February 2018
(This article belongs to the Special Issue Wine Composition and Quality Analysis)
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Monoterpene compounds contribute floral and fruity characters to wine and are desired by grape growers and winemakers for many white wines. However, monoterpene isomers, especially monoterpene enantiomers, have been little explored. It is possible to identify and quantitate 17 monoterpene isomers in 148 varietal wines from eight grape varieties; Chardonnay, Gewürztraminer, Muscat, Pinot gris, Riesling, Sauvignon blanc, Torrontes, and Viognier in two vintages by Headspace solidphase microextraction multidimensional gas chromatography mass spectrometry (HS-SPME-MDGC-MS). Results obtained from general linear models and discriminant analysis showed significant differences for the isomer profiles and enantiomer fractions among the eight grape varieties and four wine styles. The high R2 values from the fitted line show low variation in enantiomeric differences based on variety. These results provide an overview of the monoterpene isomers of wide varietal wines, and support that isomer profiles and enantiomer fractions could differentiate our wines by varietal and wine style. View Full-Text
Keywords: chiral; enantiomer fraction; MDGC-MS; discriminant analysis; general linear model chiral; enantiomer fraction; MDGC-MS; discriminant analysis; general linear model

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Song, M.; Fuentes, C.; Loos, A.; Tomasino, E. Free Monoterpene Isomer Profiles of Vitis Vinifera L. cv. White Wines. Foods 2018, 7, 27.

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