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(+)-(S)-alapyridaine--a general taste enhancer?
Tomislav Soldo1, Imre Blank, Thomas Hofmann
1Deutsche Forschungsanstalt für Lebensmittelchemie, Lichtenbergstrasse 4, D-85748 Garching, Germany.
Chemical Senses
|June 27, 2003
Summary
Alapyridaine, a compound found in heated foods, enhances multiple basic tastes like sweet, umami, and salty. The (S)-enantiomer is particularly effective, modulating taste perception in complex food mixtures.
Area of Science:
- Food Chemistry
- Sensory Science
- Taste Perception
Background:
- Alapyridaine (N-(1-Carboxyethyl)-6-hydroxymethyl-pyridinium-3-ol inner salt) is a recently identified compound in heated food products.
- It exhibits taste-enhancing properties without having a taste of its own.
Purpose of the Study:
- To investigate the taste-enhancing activities of alapyridaine, focusing on its effect on basic taste qualities.
- To determine if alapyridaine can modulate taste synergies in complex food systems.
Main Methods:
- Sensory evaluation of taste threshold concentrations for sweet, umami, salty, bitter, and sour compounds.
- Assessment of alapyridaine's effect on known taste synergies.
- Testing alapyridaine in complex tastant mixtures.
Main Results:
- Alapyridaine significantly decreased taste thresholds for sweet (glucose, sucrose), umami (MSG, GMP), and salty (NaCl) tastes.
- The physiologically active enantiomer, (+)-(S)-alapyridaine, showed greater efficacy.
- Bitter and sour taste perceptions were unaffected.
- Alapyridaine intensified existing taste synergies and modulated taste in complex mixtures.
Conclusions:
- Alapyridaine acts as a general taste enhancer, affecting multiple basic taste qualities.
- (+)-(S)-alapyridaine is a potent modulator of taste perception, applicable in complex food systems.