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Profile of red wine partially dealcoholized with a membrane-based technique and strategies to mitigate the loss of volatile compounds
In recent years, climate change has led to higher grape must sugar content and, consequently, increased alcohol by volume. Evaporative or pertraction is a common method for post-fermentation ethanol removal from wines, but it selectively removes some less polar volatile compounds along with ethanol. To mitigate volatile substance loss, this study investigates blending of the red wine (Marzemino-Cabernet blend) with obtained dealcoholized samples from it by industrial evaporative pertraction system, while maintaining the final product within a two-percentage-point reduction in ethanol. Thus MIX 1 and MIX 2 blends were prepared, reducing the ABV of the initial wine (12.5% alcohol by volume) to 10.5% and 9.5%. Chemical analyses highlighted that most alcohols, acetates, and ethyl esters of fatty acids decreased with alcohol by volume reduction. However, compounds with polar groups (acetoin and acetovanillone), C13-norisoprenoids, and certain lactones showed increasing trends. Sensory analysis indicated high scores for sweetness and smoothness in the blended wines, with a decrease in acidic taste. Floral scents notably increased, particularly in MIX 2, closely resembling the initial wine's sensory profile. The blending of initial wine with appropriately dealcoholized wine samples has proven to be an effective strategy for preserving bouquet and color of dealcoholized wines. This approach broadens the consumer base by catering to people who prefer low-alcohol options, have dietary restrictions, or are health-conscious, but who still wish to savor wines with aromatic quality rather than a flat taste. This strategy is crucial in the wine industry as it successfully addresses technical challenges and ensures economic viability.
Ethanol reduction, Nutrition. Foods and food supply, TP368-456, Flavor, Food processing and manufacture, Climate change; Ethanol reduction; Evaporative pertraction; Flavor; GC-MS; Oenology; Sensory analysis, Oenology, Climate change, TX341-641, GC-MS, Evaporative pertraction, Research Article
Ethanol reduction, Nutrition. Foods and food supply, TP368-456, Flavor, Food processing and manufacture, Climate change; Ethanol reduction; Evaporative pertraction; Flavor; GC-MS; Oenology; Sensory analysis, Oenology, Climate change, TX341-641, GC-MS, Evaporative pertraction, Research Article
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Data source Views Downloads IRIS UNIMORE - Archivio istituzionale della ricerca - Università di Modena e Reggio Emilia 15 11

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