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The present study shows that the concentration gap between detection and recognition of aliphatic aldehydes is odorant pair-dependent but at group level spans at least a factor of 100. Nevertheless, single individuals successfully discriminated between certain aldehyde pairs when presented at a factor that was less than 100 above the individual detection thresholds. Even at the lowest concentration, a factor of 3 above the individual detection thresholds, a few of the subjects were able to significantly discriminate some of the odorants.

Furthermore, the results provide evidence of a well developed discrimination ability for aliphatic aldehydes in human subjects and of a significant positive correlation between structural dissimilarity of odorants in terms of differences in carbon chain length and discriminabilty of the odorants for the homologous series of aliphatic aldehydes.

Responsible for this page: Agneta Johansson
Last updated: 05/09/08