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Chem. Senses 25: 31-37, 2000
© Oxford University Press 2000

Chemicals in Laboratory Room Air Stimulate Olfactory Neurons of Female Bombyx mori

J. Ziesmann, I. Valterova1, K. Haberkorn, M.G. de Brito Sanchez and K.-E. Kaissling

Max-Planck-Institut für Verhaltensphysiologie, Seewiesen, Postfach 1564, D-82305 Starnberg, Germany 1 Institute of Organic Chemistry and Biochemistry, Flemingovo 2, 166 10 Praha, The Czech Republic

Correspondence to be sent to: K.-E. Kaissling, Max-Planck-Institut für Verhaltensphysiologie, Seewiesen, Postfach 1564, D-82305 Starnberg, Germany

Laboratory air contained odorants that elicited electrophysiological responses in female Bombyx mori antennae. Air entrainments on charcoal filters, extracted with CS2 and subsequently with acetone, were analyzed by coupled gas chromatography (GC)–electroantennogram (EAG) as well as by GC–mass spectrometry. The CS2 extract contained 12 EAG-active peaks from which benzaldehyde, octanal, limonene, 1,8-cineol, methyl benzoate, nonanal, decanal and geranyl acetone were identified. In the acetone extract we identified eight EAG-active peaks as phenol, nonanal, 2-ethylhexanoic acid, octanoic acid, benzoic acid, nonanoic acid, decanoic acid and dimethyl phthalate. The concentrations of benzoic acid and benzaldehyde present in laboratory air were determined. The origin of the substances and importance of such odorants in laboratory air for the interpretation of physiological experiments on the olfactory system is discussed.


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