Pre-Fermentative Cryogenic Treatments: The Effect on Aroma Compounds and Sensory Properties of Sauvignon Blanc and Chenin Blanc Wine—A Review

Low-temperature treatments preceding alcoholic fermentation are becoming increasingly popular and have been used in winemaking as a tool to improve wine colour, aroma, and quality. Additionally, the pre-fermentative treatment of grapes with cryogenic agents protects the grape juice (must) from oxida...

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Bibliographic Details
Published in:Applied sciences 2024-02, Vol.14 (4), p.1483
Main Authors: van Breda, Valmary M., van Jaarsveld, Francois P., van Wyk, Jessy
Format: Article
Language:English
Subjects:
Analysis
Chenin blanc
Cold
cryogenic technologies
Cultivars
Energy consumption
Fermentation
Grapes
Liquor
methoxypyrazines
Sauvignon blanc
sensory analysis
Thiols
varietal thiols
Wine and wine making
Wine industry
Wineries
Wineries & vineyards
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Summary:Low-temperature treatments preceding alcoholic fermentation are becoming increasingly popular and have been used in winemaking as a tool to improve wine colour, aroma, and quality. Additionally, the pre-fermentative treatment of grapes with cryogenic agents protects the grape juice (must) from oxidation by reducing the diffusion of atmospheric oxygen into the liquid phase during the winemaking process. Resultant wines were reported to have enhanced varietal aromas, increased complexity, and higher thiol levels. Indications are that increased contact time between skin and juice improves the extraction of the compounds and/or precursors. Recently, there has been considerable interest in the production of wines with enhanced varietal aromas and improved quality by applying innovative winemaking technologies. This review aims to provide an overview of the aroma and organoleptic quality of Sauvignon blanc and Chenin blanc wines produced from grapes that were subjected to pre-fermentative cryogenic treatments including the impact aroma compounds, i.e., volatile thiols and methoxypyrazines.
ISSN:2076-3417
2076-3417
DOI:10.3390/app14041483