Synchronous two-dimensional MIR correlation spectroscopy (2D-COS) as a novel method for screening smoke tainted wine
Date
2013
Authors
Fudge, A.
Wilkinson, K.
Ristic, R.
Cozzolino, D.
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Journal article
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Food Chemistry, 2013; 139(1-4):115-119
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Anthea L. Fudge, Kerry L. Wilkinson, Renata Ristic, Daniel Cozzolino
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Abstract
In this study, two-dimensional correlation spectroscopy (2D-COS) combined with mid-infrared (MIR) spectroscopy was evaluated as a novel technique for the identification of spectral regions associated with smoke-affected wine, for the purpose of screening taint arising from grapevine exposure to smoke. Smoke-affected wines obtained from experimental and industry sources were analysed using MIR spectroscopy and chemometrics, and calibration models developed. 2D-COS analysis was used to generate synchronous data maps for red and white cask wines spiked with guaiacol, a marker of smoke taint. Correlations were observed at wavelengths that could be attributable to aromatic C–C stretching, i.e., between 1400 and 1500 cm 1, indicative of volatile phenols. These results demonstrate the potential of 2D-COS as a rapid, high-throughput technique for the preliminary screening of smoke tainted wine.
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© 2013 Elsevier Ltd. All rights reserved.