Chemical stimulus determinants of cat neural taste responses to meats
- Cite this article as:
- Boudreau, J.C. J Am Oil Chem Soc (1977) 54: 464. doi:10.1007/BF02671037
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Abstract and Summary
The cat taste system was studied by recording single unit pulse signals from neurons innervating chemoreceptors on the fungiform papillae on the tongue. On the basis of neurophysiological measures, these units have been divided into three separate functional groups. Group I units respond to acids in general, but at neutral pH the most effective stimuli are certain nitrogen compounds. Compounds with an imidazole ring such as L-histidine, 1-methyl imidazole, anserine and carnosine prove to be effective group I stimuli. Group II units are responsive to amino acids, especially L-proline and L-cysteine, to the di- and triphosphate nucleosides, and to some inorganic salts. Group III unit stimuli are less well defined but these units are among those maximally discharged by nucleotides. The most effective compounds for stimulating both Group I and Group II units are certain nitrogen heterocycles.