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PROP taster status is related to fat perception and preference
1Department of Food Science, Cook College, Rutgers University, New Brunswick, New Jersey 08901-8520, USA. Tepper@taste-test.rutgers.edu
Annals of the New York Academy of Sciences
|February 4, 1999
Summary
Individuals sensitive to 6-n-propylthiouracil (PROP) have more taste papillae and trigeminal innervation. This sensitivity links to perceiving fat content and capsaicin burn, impacting food preferences.
Area of Science:
- Sensory science
- Human physiology
- Genetics
Background:
- Individual differences in taste perception are significant.
- Sensitivity to 6-n-propylthiouracil (PROP) correlates with responses to other bitter, sweet, and trigeminal stimuli.
- PROP taster status is associated with fungiform papillae density and trigeminal innervation.
Purpose of the Study:
- To investigate the link between PROP taster status and sensory perception.
- To test if PROP tasters exhibit higher fungiform papillae density.
- To determine if PROP tasters show increased sensitivity to capsaicin and enhanced ability to discriminate fat content.
Main Methods:
- Subjects classified as PROP nontasters, medium tasters, or supertasters based on psychophysical functions.
- Fungiform papillae density measured.
- Sensitivity to capsaicin assessed via oral burn ratings.
- Fat content discrimination in salad dressing evaluated.
Main Results:
- Fungiform papillae density significantly differed among taster groups, highest in supertasters.
- Medium and supertasters reported greater oral burn from capsaicin compared to nontasters.
- Medium and supertasters discriminated fat content differences in salad dressing, unlike nontasters.
Conclusions:
- PROP taster status is linked to fungiform papillae density and capsaicin sensitivity.
- Individual differences in fat perception and discrimination are associated with PROP taster status.
- Genetic and anatomical variations influence fat perception and preference.