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Related Experiment Video

Updated: May 25, 2026

Taste Exam: A Brief and Validated Test

Taste Exam: A Brief and Validated Test

Published on: August 17, 2018

Genetic contribution to sour taste preference.

Outi Törnwall¹, Karri Silventoinen, Kaisu Keskitalo-Vuokko

¹Department of Food and Environmental Sciences, Agnes Sjöbergin katu 2, 00014, University of Helsinki, Finland. outi.tornwall@helsinki.fi

|January 17, 2012

Summary

This summary is machine-generated.

Genetics significantly influences how individuals perceive and prefer sour tastes. Twin studies reveal a substantial genetic component in both taste perception and the liking of sour foods.

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Area of Science:

Genetics
Human Nutrition
Sensory Science

Background:

Individual differences in taste perception are common.
The genetic basis for sour taste perception and preference is not fully understood.

Purpose of the Study:

To investigate the genetic and environmental contributions to sour taste perception and preference.
To analyze the heritability of sensory traits and food use-frequency related to sourness.

Main Methods:

A twin study design was employed with young adult Finnish twins (n=328).
Sour taste perception was assessed using orange juice stimuli.
Food preference and use-frequency for sour foods were evaluated via questionnaire.
Quantitative genetic modeling was used to analyze trait variation and co-variation.

Main Results:

Genetic factors explained 14% of pleasantness and 31% of intensity variation for sour taste.
Genetics accounted for 34-50% of variation in pleasantness and use-frequency of sour foods.
Significant genetic correlations were found between sensory and questionnaire traits related to sourness.

Conclusions:

A notable genetic contribution underlies individual differences in sour taste perception.
Genetics plays a significant role in the preference for sour foods.
These findings highlight the heritability of taste preferences.