Work

Sensitivity Threshold for Selected Aromas and Defects in Casual Wine Consumers

Year: 2026

Type: article

Abstract: ABSTRACT Wine aromas and faults are caused by chemical compounds impacting wine quality that can originate from viticulture, vinification, bottling, or aging. Wine professionals are highly trained to recognize and assess quality indicators including characteristic aromas and faults/defects. However, consumers make the majority of wine purchasing decisions, and their sensitivities to these characteristics can vary greatly across individuals. Sixty‐eight casual wine consumers evaluated seven odor compounds: 2,4,6‐trichloroanisole (TCA), the main compound responsible for “Cork Taint”; a mixture of 4‐ethylphenol and 4‐Ethylguaiacol (4EP/4EG), the main compounds responsible for “Brett character”; Acetic Acid, an indicator of volatile acidity (oxidation); Diacetyl, “butter odor”; ß‐ionone, “fruity/floral odor”; 1‐octen‐3‐one, “mushroom odor”; and 2,5‐dimethyl‐3‐methoxypyrazine (DMMP), “green/earthy odor.” All chemical standards were prepared in water solutions. Individual Best‐Estimate Thresholds (BET) of the olfactory perception of the compounds were measured, and group mean detection thresholds were determined using regression analysis with Abbott's formula. The results showed that consumers were insensitive to most of the aromas, but highly sensitive to Brett character, which is commonly found in commercial wines.

Source: Journal of Sensory Studies

DOI: 10.1111/joss.70126

Authors: Katherine C. Dectis, Beverly J. Tepper

Institution: Rutgers, The State University of New Jersey

Language: English

Topic: Sensory Analysis and Statistical Methods

Subfield: Food Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: hybrid

Estimated APC paid: $4,030

Funder: U.S. Department of Agriculture