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…

A new winemaking technology: fermentation, aging and bottling without added additives and preservatives

Auric infinity Technology introduces three new patented products designated for fermentation, aging and bottling without added additives and preservatives that have never been used in the winemaking industry.

Exploring physiological diversity in Vitis genotypes: hydraulic traits in vines for oenological purposes and vines for table grapes

to maintain viticulture under global warming conditions, it is important to carefully select the appropriate genotypes for each vine-growing region and develop cultivars that are drought resistant. this ability is highly dependent on hydraulic traits, which are dynamic and vary according to the vine’s developmental stage and climatic conditions. this framework steadily enhances our understanding of the differences in drought resistance among vitis genotypes. however, there is still a need to comprehensively grasp the intra-specific variability, particularly between oenological and table grape cultivars.

Pierce’s disease of grapevines, a new threat to the wine industry in Southern Europe

Pierce’s disease (PD) is considered a potential threat to european viticulture (EPPO a2 list of pathogens since 1981). In the usa, infections caused by the vector-borne bacterium xylella fastidiosa have caused recurrent damage to vineyards in California and the southeastern states. However, vineyards in Europe have remained free of PD until recently, when it was first detected on the island of Mallorca in 2017. The reasons for the absence of PD in continental Europe have not been convincingly explained.

Un siècle de publications et d’archives de l’OIV : un patrimoine mondial de valeur universelle exceptionnelle pour les sciences et techniques de la vigne et du vin

In 2004, at its general assembly, the oiv adopted the transfer of its scientific and technical heritage from the office to the international organisation of vine and wine. Unesco defines heritage as “our legacy from the past, what we live with today, and what we pass on to future generations.”

Quantitative nuclear magnetic resonance spectroscopy 2H(D)-qNMR in the study of deuterium distribution in intracellular water and fermentation products of grape carbohydrates using ethyl alcohol as an example

The paper presents results that develop the results of studies carried out in 2022-2023 under the OIV grant on the topic of distribution of deuterium (2H(D)) in the intracellular water of grapes and wines, taking into account the impact of natural, climatic and technogenic factors using quantitative nuclear magnetic resonance spectroscopy (qNMR).