A model for odour thresholds |
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Authors: | Abraham Michael H Gola Joëlle M R Cometto-Muniz J Enrique Cain William S |
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Affiliation: | Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK. m.h.abraham@ucl.ac.uk |
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Abstract: | Odour detection thresholds, that we have previously obtained, have been analysed by a general equation for selective transport. It is shown that such selective transport can account for some 77% of the total effect. The remainder is due to a specific size effect, that might involve odour-binding proteins, and a specific effect for aldehydes and carboxylic acids. Our analysis raises the question of whether selective transport is physically separable from the specific effects of receptor activation. The model predicts a chemical cut-off in odour detection along any homologous series. |
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