Taste confusions following gymnemic acid rinse.
Chem Senses
; 24(4): 393-403, 1999 Aug.
Article
en En
| MEDLINE
| ID: mdl-10480675
ABSTRACT
The effect of a gymnemic acid (GA) rinse, which simulated a sweet-taste deficit, was measured on human taste perception and identification. Taste ratings showed that GA reduced the intensities of sucrose and aspartame to 14% of pre-rinse levels; over the recovery interval of 30 min, these values increased linearly to 63% of the pre-rinse levels. Repeated presentations of a set of 10 stimuli (five primarily or partly sweet--sucrose, aspartame, and NaCl-sucrose, acid-sucrose and quinine-sucrose mixtures; and five nonsweet--NaCl, KCl, Na glutamate (MSG), quinine HCl and citric acid) for identification following water and GA rinses produced 'taste confusion matrices' (TCMs). Correct identification of the sweet-tasting stimuli was reduced by 23% in presentations closely following the GA rinse, an effect that dissipated with time. Most misidentifications involved sucrose and mixtures containing sucrose. In a second TCM experiment, GA was presented frequently within each session to maintain the sweet taste deficit, which revealed itself as specific confusions. Rinsing with GA impaired discriminability of sweet-nonsweet pairs of stimuli but enhanced discriminability of the aspartame-(NaCl-sucrose) pair. GA had no effect on discriminability of nonsweet stimulus pairs. The results suggest that specific error patterns in the TCM could be used to identify quality-specific taste disorders.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Saponinas
/
Gusto
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Triterpenos
Límite:
Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Chem Senses
Año:
1999
Tipo del documento:
Article
País de afiliación:
Estados Unidos