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Tastes produced by peptides containing ionic groups and by related compounds
R Kuramitsu1, M Takahashi, K Tahara
1Department of Chemistry, Faculty of General Education, Akashi College of Technology, Hyogo, Japan.
Bioscience, Biotechnology, and Biochemistry
|October 1, 1996
Summary
Ionic groups influence taste perception, but their relationship with chemical structure remains unclear. This study defines strange tastes of neutral salts (TNS) and analyzes ionic group tastes, revealing distinct characteristics from bitter and sweet flavors.
Area of Science:
- Food Science
- Sensory Science
- Chemical Senses
Background:
- The relationship between chemical structure and taste perception of ionic groups is not well understood.
- Neutral salts often exhibit ambiguous and undesirable tastes, complicating taste-structure relationship studies.
- Existing knowledge primarily links specific ions to salty or umami tastes, like sodium chloride and monosodium glutamate.
Purpose of the Study:
- To elucidate the taste characteristics of ionic groups by defining and categorizing strange tastes of neutral salts (TNS).
- To investigate the taste profiles of sour, salty, and umami sensations associated with various acidic and basic groups.
- To differentiate the taste properties of ionic groups from bitter and sweet tastes.
Main Methods:
- Defining and categorizing "strange tastes of neutral salts" (TNS) as a distinct sensory phenomenon.
- Systematically analyzing tastes resulting from different acidic and basic functional groups.
- Evaluating taste perceptions across various combinations of acidic and basic groups.
Main Results:
- Identified common characteristics among tastes imparted by ionic groups.
- Demonstrated that these ionic group-derived tastes differ significantly from bitter and sweet taste profiles.
- Established a framework for understanding taste contributions beyond simple salty and umami perceptions.
Conclusions:
- The study successfully characterized tastes arising from ionic groups, differentiating them from other basic tastes.
- The definition and analysis of TNS provide a new perspective on saltiness and taste complexity.
- Understanding these taste-structure relationships can inform food product development and sensory science research.