Jun 1, 1975

Differences in the responses of taste receptors to organic and inorganic acids with changes in the concentration of bicarbonate in the solution

Fiziologicheskiĭ zhurnal SSSR imeni I. M. Sechenova
M V Kozlova


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.

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Mentioned in this Paper

Citricum acidum, citric acid, homeopathic preparation
Carbonic Acid Ions
Entire Chorda Tympani
Structure of Chorda Tympani
Electrophysiology (Science)
Bicarbonate Measurement
Taste Buds
Dose-Response Relationship, Drug

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