Multidimensional scaling of perceived odour using structurally related odorants
Degree GrantorUniversity of Canterbury
Degree NameDoctor of Philosophy
A series of experiments was carried out to investigate the perception of some structurally related odorants, derivatives of Bornane, Norbornane and Cyclohexane. A verbal study was carried out to determine appropriate response scale labels for the odour experiments and nine scale labels were chosen; pleasant, minty, metallic, harsh, foul, oily, resinous, sweet and camphor. Four experimental groups were chosen for the odour experiment and two groups of odours were selected, which were 18 structurally related stimuli and 5 anchor stimuli. The multidimensional scaling solutions showed 3 clusters according to core molecule type as well as regularity in the positioning of functional groups on molecules within each cluster. The anchor stimuli were well spread, as expected, due to the variation in odour type within the group. Both intra- and inter- group reliability were shown to be good for the different experimental groups. The results were discussed in respect to some of the major odour theories.