title: SPME applied to the study of volatile organic compounds emitted by three species of Eucalyptus in situ. Solid-phase micro extraction.
abstract: Headspace solid-phase microextraction coupled to gas chromatography/ion trap mass spectrometry-65 microm polydimethylsiloxane/divinylbenzene (PDMS/DVB) was used to identify and monitor the emission patterns of biogenic volatile organic compounds from leaves of Eucalyptus dunnii, Eucalyptus saligna, and Eucalyptus citriodora in situ. Short extractions (1 min) were performed every 30 min for periods of 8-10 h during 24 days taking advantage of the high capacity of this porous polymer coating. Forty-two compounds were detected and 20 identified in the headspace of E. saligna leaves, and 19 of 27 compounds were identified in the headspace of E. dunnii leaves. The emission pattern of (E)-beta-ocimene and rose oxide suggests that they may play a bioactive role in Eucalyptus.
authors.affiliation: Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), 90040-060 Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Cláudia A
authors.initials: CA
authors.lastname: Zini
authors.forename: Fabio
authors.initials: F
authors.lastname: Augusto
authors.forename: Eva
authors.initials: E
authors.lastname: Christensen
authors.forename: Elina B
authors.initials: EB
authors.lastname: Caramão
authors.forename: Janusz
authors.initials: J
authors.lastname: Pawliszyn
mesh_terms: D000080462:Acyclic Monoterpenes; D000475:Alkenes / Q000032:analysis; D000081008:Bicyclic Monoterpenes; D000081007:Cymenes; D005052:Eucalyptus / Q000737:chemistry / Q000378:metabolism*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D039821:Monoterpenes / Q000032:analysis; D018515:Plant Leaves / Q000737:chemistry / Q000378:metabolism*; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes / Q000032:analysis; D013729:Terpenes / Q000032:analysis; D014835:Volatilization
chemical_list: D000080462:Acyclic Monoterpenes; D000475:Alkenes; D000081008:Bicyclic Monoterpenes; D000081007:Cymenes; D039821:Monoterpenes; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D013729:Terpenes; C443996:beta-ocimene; C007210:4-cymene; C024714:caryophyllene; C005451:alpha-pinene