terclim by ICS banner
IVES 9 IVES Conference Series 9 OIV 9 OIV 2024 9 Orals - Oenology, methods of analysis 9 Smoke tainted wine – what now?

Smoke tainted wine – what now?

Abstract

Wines made from grapes exposed to smoke from bushfires that burned during the 2019/20 Australian grape growing season were subjected to various amelioration techniques, including: the addition of activated carbons, molecularly imprinted polymers (MIPs), or a proprietary adsorbent resin (either directly, or following fractionation by membrane filtration); spinning cone column (SCC) distillation; and transformation into spirit or vinegar, via fractional distillation or fermentation by acetic acid bacteria, respectively. The efficacy of treatments was determined by comparing volatile phenols (VPs) and their glycoconjugates, as chemical markers of smoke taint and changes in the intensity of fruit and smoke-related sensory attributes in wines, distillate, and vinegar samples. In brief: activated carbons can remove free and glycosylated VPs from smoke-tainted wines to some extent, without stripping desirable wine aroma and flavour. MIPs were also effective in removing VPs but not VP glycoconjugates. In contrast, adsorbent resin removed both free (<90%) and bound VPs (<30%). However, membrane filtration followed by resin treatment of the resulting permeate removed >95% of VPs. SCC distillation alone cannot remediate smoke taint, but smoke-related attributes were significantly diminished when ‘stripped wine’ was treated with activated carbon and blended with its corresponding condensate. Fractional distillation yielded ‘heart’ distillate fractions that were considered suitable for spirit production. Lastly, the potential for smoke-tainted wine to be transformed into vinegar was also demonstrated. The choice (and success) of each treatment ultimately depends on the extent to which wine is tainted, but the cost of harvesting and processing smoke-affected grapes should be considered when evaluating the economic return of remediation.

DOI:

Publication date: November 18, 2024

Issue: OIV 2024

Type: Article

Authors

Renata Ristic¹, Huo Yiming¹, Ysadora Mirabelli-Montan², Zhang Jin², Kerry Wilkinson²

¹ The University of Adelaide, PMB 1, Glen Osmond, Adelaide, Australia
² University of Adelaide, Waite Campus, PMB 1, Glen Osmond, Urrbrae, Australia

Contact the author*

Tags

Full papers OIV 2024 | IVES Conference Series | OIV | OIV 2024

Citation

Related articles…

French wine sector facing climate change (part. 2) : the implementation of the national strategy

This summary follows this made by Hervé Hannin et al. Entitled “French wine sector facing climate change (part. 1) : a national strategy built on a foresight and participatory approach “. The french wine sector has taken a collective approach to the issue of climate change, and has officially submitted its strategy to the minister of agriculture in 2021. This industry policy is the result of multidisciplinary work carried out through the “laccave” project (metaprogramme accaf, inrae) and its prospective study designed to anticipate climate change in the french wine industry (aigrain p. Et al., 2016). French wine professionals decided to structure a strategy to deal with climate change du in particular to the presentation made at the 2016 OIV congress in Brazil.

Market entry strategies in the U.S. alcohol distribution: The case of French wine exporters

This study examines the different strategies adopted by wine exporters located in France for penetrating international alcohol distribution networks in the U.S. market (and to a lesser extent the Canadian market). Grounded in the Business-to-Business (B2B) marketing literature (Ellegaard and Medlin, 2018), this study adopts a framework integrating a ‘Stakeholder’ approach for understanding the logics behind exporters’ strategies to penetrate the alcohol distribution networks (wholesalers, importers, alcohol monopolies).

Algae protein: fining agent for white wine, sustainable, non-allergenic and animal-free

The development of non-animal and non-allergenic alternatives to traditional protein fining agents used in winemaking is of critical importance in order to ensure consumer safety and production sustainability. This study evaluates the effect of protein extracted from three types of algae (spirulina, chlorella vulgaris and tetraselmis chuii) as fining agents on the polymeric proanthocyanidin content responsible for astringency, as well as their effect on the colour, phenolic composition and volatile aroma of two white wines (a and b).

Biodiversidad de levaduras no-Saccharomyces aisladas de viñedos uruguayos: Lachancea thermotolerans y su potencial en la industria de bebidas fermentadas

Non-saccharomyces yeasts play a crucial role in fermentation, producing a variety of secondary metabolites and enzymes that contribute to aromatic and sensory complexity compared to saccharomyces yeasts. It is crucial to understand and control the dynamics of non-saccharomyces yeasts to produce distinctive and high-quality fermented beverages.

Evaluation of Acıkara (Vitis vinifera L.) native grape variety of anatolia for red wine production potential

The acıkara grape variety, a nearly forgotten native black variety in Anatolia/Turkey, has recently gained interest in its potential for producing high-quality wine from producers and consumers. The potential of producing high-quality red wine from the Acıkara grape variety (vitis vinifera), which is cultivated on the elmalı/antalya in the highland (1100 m altitude) of western mediterranean region, was investigated, and the suitability of the wine’s characteristics associated with high-quality red wine was determined.