title: Intraspecific variation in the essential oils from Drimys brasiliensis leaves and stem barks.
abstract: The essential oils from leaves and stem barks of Drimys brasiliensis Miers (Winteraceae), collected in July and December 2008, were analyzed by GC/FID and GC/MS. The stem bark oils were composed mainly of monoterpenes (July, 45 +/- 3%; December, 92 +/- 4%), while the oils from leaves showed the predominance of sesquiterpenes (July, 47 +/- 1%; December, 55 +/- 1%). The variation in the relative amount of constituents could be associated, at least in part, to several microclimatic parameters such as precipitation, temperature and/or phenological state, which were different for each collection of D. brasiliensis.
authors.affiliation: Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, 09972-270, Diadema, SP, Brazil. joao.lago@unifesp.br
authors.forename: João Henrique G
authors.initials: JH
authors.lastname: Lago
authors.forename: Larissa Anastácio C
authors.initials: LA
authors.lastname: Carvalho
authors.forename: Marcelo J P
authors.initials: MJ
authors.lastname: Ferreira
authors.forename: Paulete
authors.initials: P
authors.lastname: Romoff
authors.forename: João Luiz B
authors.initials: JL
authors.lastname: Zanin
authors.forename: Marisi G
authors.initials: MG
authors.lastname: Soares
authors.forename: Oriana A
authors.initials: OA
authors.lastname: Fávero
mesh_terms: D032424:Drimys / Q000737:chemistry*; D039821:Monoterpenes / Q000032:analysis; D009822:Oils, Volatile / Q000032:analysis*; D024301:Plant Bark / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D012717:Sesquiterpenes / Q000032:analysis
chemical_list: D039821:Monoterpenes; D009822:Oils, Volatile; D012717:Sesquiterpenes