[Differences in the responses of taste receptors to organic and inorganic acids with changes in the concentration of bicarbonate in the solution].
The thresholds of the pH for citric acid (pH=4.9) were found to exceed by 1.4 pH the thresholds for HC1 (3.5) at 1.2 mmol/1 bicarbonate in the solution. The reaction to citric acid was higher than to HC1 at equal pH. Decreasing of bicarbonate from 1.2 mmol/1 to 0 reduced pH threshold only for sitric acid from 4.90 to 3.15. pH threshold for HC1 remained 3.5 The chorda tympani response to stimulation with solutions containing bicarbonate (1.2 mmol/1) was higher than in absence of bicarbonate. The data obtained suggest two ranges of the acids in action.
D000818:Animals; D001639:Bicarbonates / Q000494:pharmacology; D002415:Cats; D002814:Chorda Tympani Nerve / Q000502:physiology*; D002951:Citrates / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004594:Electrophysiology; D006851:Hydrochloric Acid / Q000494:pharmacology*; D006863:Hydrogen-Ion Concentration; D013650:Taste Buds / Q000187:drug effects*
D001639:Bicarbonates; D002951:Citrates; D006851:Hydrochloric Acid
Razlichiia v reaktsiiakh vkusovykh retesptorov na organicheskie i neorganicheskie kisloty pri izmenenii soderzhaniia bikarbonata v rastvore