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Chem Biodivers

Title:		Recent findings in the chemistry of odorants from four Baccharis species and their impact as chemical markers
Author(s):		Minteguiaga M; Umpierrez N; Xavier V; Lucas A; Mondin C; Farina L; Cassel E; Dellacassa E;
Address:		"Catedra de Farmacognosia y Productos Naturales, Facultad de Quimica, Universidad de la Republica (FQ-UdelaR), Av. General Flores 2124, 11800 Montevideo, Uruguay, (phone: +598-29244068). Laboratorio de Operacoes Unitarias (LOPE), Faculdade de Engenharia, Pontificia Universidade Catolica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, CEP: 90619-900, Porto Alegre, RS, Brasil. Departamento de Biodiversidade e Ecologia, Pontificia Universidade Catolica do Rio Grande do Sul (PUCRS), Av. Ipiranga 6681, CEP: 90619-900, Porto Alegre, RS, Brasil. Laboratorio de Biotecnologia de Aromas, Facultad de Quimica, Universidad de la Republica (FQ-UdelaR), Av. General Flores 2124, 11800 Montevideo, Uruguay. Catedra de Farmacognosia y Productos Naturales, Facultad de Quimica, Universidad de la Republica (FQ-UdelaR), Av. General Flores 2124, 11800 Montevideo, Uruguay, (phone: +598-29244068). edellac@fq.edu.uy. Laboratorio de Biotecnologia de Aromas, Facultad de Quimica, Universidad de la Republica (FQ-UdelaR), Av. General Flores 2124, 11800 Montevideo, Uruguay. edellac@fq.edu.uy"
Journal Title:		Chem Biodivers
Year:		2015
Volume:		12
Issue:		9
Page Number:		1339 - 1348
DOI:		10.1002/cbdv.201400329
ISSN/ISBN:		1612-1880 (Electronic) 1612-1872 (Linking)
Abstract:		"Baccharis is a widespread genus belonging to the Asteraceae family that includes almost 400 species exclusively from the Americas. Even when studied in detail, the taxonomic classification among species from this genus is not yet fully defined. Within the framework of our study of the volatile composition of the Baccharis genus, four species (B. trimera, B. milleflora, B. tridentata, and B. uncinella) were collected from the 'Campos de Cima da Serra' highlands of the Brazilian state of Rio Grande do Sul. The aerial parts were dried and extracted by the simultaneous distillation extraction (SDE) procedure. This is the first time that SDE has been applied to obtain and compare the volatile-extract composition in the Baccharis genus. Characterization of the volatile extracts allowed the identification of 180 peaks with many coeluting components; these latter being detailed for the first time for this genus. The multivariate statistical analyses allowed separating the volatile extracts of the four populations of Baccharis into two separate groups. The first one included the B. milleflora, B. trimera, and B. uncinella volatile extracts. The three species showed a high degree of similarity in their volatile composition, which was characterized by the presence of high contents of sesquiterpene compounds, in particular of spathulenol. The second group comprised the extract of B. tridentata, which contained alpha-pinene, beta-pinene, limonene, and (E)-beta-ocimene in high amounts"
Keywords:		Acyclic Monoterpenes Alkenes/analysis/isolation & purification Baccharis/*chemistry Bicyclic Monoterpenes Bridged Bicyclo Compounds/analysis/isolation & purification Cluster Analysis Cyclohexenes/analysis/isolation & purification Gas Chromatography-Mass S;
Notes:		"MedlineMinteguiaga, Manuel Umpierrez, Noelia Xavier, Vanessa Lucas, Aline Mondin, Claudio Farina, Laura Cassel, Eduardo Dellacassa, Eduardo eng Research Support, Non-U.S. Gov't Switzerland 2015/09/14 Chem Biodivers. 2015 Sep; 12(9):1339-48. doi: 10.1002/cbdv.201400329"