Document Type
Article
Department or Administrative Unit
Chemistry
Publication Date
3-30-2019
Abstract
Wine fraud leaves wineries vulnerable to damage in reputation and potential lost revenue. To reduce this risk for wines from Washington State (WA), USA, advanced analytical instrumentation and statistical methods were employed to geographically classify 133 wines from 4 major wine producing regions, including 70 wines from WA. Analyses of 37 elements and 2 water isotopes were performed with Triple Quadrupole Inductively Coupled Plasma Mass Spectrometry and Cavity Ring-Down Spectroscopy, respectively. Linear discriminant analysis resulted in 96.2% discrimination, achieved with 11 parameters (Mn, Zn, Pb, Ni, As, D/H, La, Ce, Si, Zr and Sr) that were linearly combined into 3 functions. WA wines were uniquely distinguished in large part with low D/H ratios and Mn concentrations derived from the isotopically light precipitation and volcanic loess soils encountered in this region, respectively. This study is the first of its kind to focus on the authentication of WA wines.
Recommended Citation
Orellana, S., Johansen, A. M., & Gazis, C. (2019). Geographic classification of U.S. Washington State wines using elemental and water isotope composition. Food Chemistry: X, 1, 100007. https://doi.org/10.1016/j.fochx.2019.100007
Journal
Food Chemistry: X
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Rights
© 2019 The Author(s). Published by Elsevier Ltd.
Comments
This article was originally published in Food Chemistry: X. The full-text article from the publisher can be found here.