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Abstract

Two Verdelho and Petit Verdot wines were produced from sequential harvests of grapes. The alcohol concentration of early harvest (EH) and late harvest (LH) wines were respectively 9% and 13.5% v/v for Verdelho, and 10.5% and 13% v/v for Petit Verdot. LH wines were dealcoholised to match the same alcohol level of EH samples using a combined reverse osmosis-evaporative perstraction process. In dealcoholised wines, there was a decrease in volatile compounds (esters particularly) compared to LH treatments. For both varieties, the sensory attribute ratings for overall aroma intensity and alcohol mouthfeel also decreased following dealcoholisation. Dealcoholised wines were distinctively different from both LH and EH wines even though these wines had similar alcohol level to EH wines. When dealcoholisation is considered for high-alcohol wines, it is important to consider that membrane effects can significantly change depending on the wine non-volatile matrix composition and the level of alcohol reduction required.

Item Type:	Article
Authors/Creators:	Longo, R and Blackman, JW and Antalick, G and Torley, PJ and Rogiers, SY and Schmidtke, LM
Keywords:	wine, dealcoholisation, lower alcohol wine, early harvest, common component and specific weights analysis, sensory descriptive analysis, reverse osmosis, evaporative perstraction
Journal or Publication Title:	Food Chemistry
Publisher:	Elsevier Sci Ltd
ISSN:	0308-8146
DOI / ID Number:	https://doi.org/10.1016/j.foodchem.2018.04.013
Copyright Information:	Copyright 2018 Elsevier Ltd.
Related URLs:	Google Scholar: Longo, R
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