A survey of volatile organic compounds (VOCs) excreted from various Gr
am-negative bacteria (Pseudomonas spp., Serratia spp. and Enterobacter
spp.) was carried out. Compounds were identified by gas chromatograph
y-mass spectrometry. VOCs identified included dimethyl disulphide, dim
ethyl trisulphide and isoprene. (C) 1997 Elsevier Science Ltd.