title: Identification of geosmin as a volatile metabolite of Penicillium expansum.
abstract: Cultures of Penicillium expansum produce a musty, earthy odor. Geosmin [1,10-trans-dimethyl-trans(9)-decalol] was identified by gas chromatography-mass spectrometry from headspace samples of P. expansum cultures. Olfactory comparison of P. expansum cultures with a geosmin standard indicated geosmin is the primary component of the odor associated with P. expansum.
authors.affiliation: Tree Fruit Research Laboratory, U.S. Department of Agriculture, Wenatchee, Washington 98801.
authors.forename: J P
authors.initials: JP
authors.lastname: Mattheis
authors.forename: R G
authors.initials: RG
authors.lastname: Roberts
mesh_terms: D009284:Naphthols / Q000302:isolation & purification / Q000378:metabolism*; D009812:Odorants / Q000032:analysis*; D010407:Penicillium / Q000378:metabolism*; D014835:Volatilization
chemical_list: D009284:Naphthols; C001278:geosmin