title: Chemical composition and biological activity of the essential oil of Amomum biflorum.
abstract: The aim of this study was to investigate the chemical composition and bioactivity of Amomum biflorum Jack harvested in the region of Petchaboon, Thailand. The essential oil of the fresh whole plant obtained by hydrodistillation was analyzed by gas chromatography (GC) (Kovats index) and gas chromatography coupled with mass spectrometry (GC/MS). The average yield of essential oil of A. biflorum was 0.21 +/- 0.05 % (w/w). The major chemical constituents were camphor (17.6 %), alpha-bisabolol (16.0 %), camphene (8.2 %) and alpha-humulene (5.1%). The essential oil was active against Staphylococcus aureus (MIC: 30 microg/mL) and had an antioxidant activity with an ORAC index of 23 +/- 5 micromol Trolox/mg.
authors.affiliation: Département des Sciences Fondamentales, Laboratoire LASEVE, Université du Québec a Chicoutimi, Québec, Canada G7H 2B1.
authors.forename: Chakkrapat
authors.initials: C
authors.lastname: Singtothong
authors.forename: Michel J
authors.initials: MJ
authors.lastname: Gagnon
authors.forename: Jean
authors.initials: J
authors.lastname: Legault
mesh_terms: D035801:Amomum / Q000737:chemistry*; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D000975:Antioxidants / Q000494:pharmacology; D009822:Oils, Volatile / Q000032:analysis* / Q000494:pharmacology*; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D000975:Antioxidants; D009822:Oils, Volatile