title: Seasonal variation of the essential oil from two Brazilian native Aldama La Llave (Asteraceae) species.
abstract: Aldama arenaria and A. robusta are morphologically similar aromatic species that have seasonal development. The yield and chemical composition of essential oils from aerial and underground vegetative organs of these species were compared to verify the production of volatile metabolites in flowering and dormant phases of development and to identify if there are unique compounds for either species. The major compound in the essential oils from A. arenaria leaves was palustrol (16.22%) and for aerial stems was limonene (15.3%), whereas limonene (11.16%) and α-pinene (19.64%) were the major compounds for leaves and aerial stems from A. robusta, respectively. The major compound for the underground organs was α-pinene, in both species and phenological stages. High amounts of diterpenes were found especially for A. arenaria essential oils. Each analyzed species presented unique compounds, which can provide a characteristic chemical profile for both species helping to solve their taxonomic problems. This study characterized for the first time the yield and essential oil composition of A. arenaria and A. robusta, which have medicinal potential, and some of the compounds in their essential oils are unique to each one and may be useful in helping the correct identification of them.
authors.affiliation: Departamento de Ciências Biológicas, Escola Superior de Agricultura 'Luiz de Queiroz', Universidade de São Paulo, Av. Pádua Dias, 11, Caixa Postal 9, 13418-900 Piracicaba, SP, Brasil.
authors.forename: Tuane S DE
authors.initials: TS
authors.lastname: Oliveira
authors.affiliation: Departamento de Ciências Biológicas, Escola Superior de Agricultura 'Luiz de Queiroz', Universidade de São Paulo, Av. Pádua Dias, 11, Caixa Postal 9, 13418-900 Piracicaba, SP, Brasil.|Programa de Pós-Graduação em Biologia Vegetal, Instituto de Biologia, UNICAMP, Cidade Universitária Zeferino Vaz, Rua Monteiro Lobato, 255, 13083-862 Campinas, SP, Brasil.
authors.forename: Aline B
authors.initials: AB
authors.lastname: Bombo
authors.affiliation: Centro Pluridisciplinar de Pesquisas Químicas, Biológicas e Agrícolas/ CPQBA, UNICAMP, Rua Alexandre Cazelatto, 999, Vila Betel, 13148-218 Paulínia, SP, Brasil.
authors.forename: Adriana S S DE
authors.initials: AS
authors.lastname: Oliveira
authors.affiliation: Centro Pluridisciplinar de Pesquisas Químicas, Biológicas e Agrícolas/ CPQBA, UNICAMP, Rua Alexandre Cazelatto, 999, Vila Betel, 13148-218 Paulínia, SP, Brasil.
authors.forename: Vera L
authors.initials: VL
authors.lastname: Garcia
authors.affiliation: Departamento de Ciências Biológicas, Escola Superior de Agricultura 'Luiz de Queiroz', Universidade de São Paulo, Av. Pádua Dias, 11, Caixa Postal 9, 13418-900 Piracicaba, SP, Brasil.
authors.forename: Beatriz
authors.initials: B
authors.lastname: Appezzato-DA-Glória
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D000081008:Bicyclic Monoterpenes; D001938:Brazil; D053138:Cyclohexenes / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D000077222:Limonene; D039821:Monoterpenes / Q000032:analysis; D009822:Oils, Volatile / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D012621:Seasons; D013729:Terpenes / Q000032:analysis
chemical_list: D000081008:Bicyclic Monoterpenes; D053138:Cyclohexenes; D039821:Monoterpenes; D009822:Oils, Volatile; D010938:Plant Oils; D013729:Terpenes; D000077222:Limonene; C005451:alpha-pinene