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Volatile compositions of two Asteraceae from the north‐east of Brazil: Ageratum conyzoides and Acritopappus confertus (Eupatorieae)
Author(s) -
Lima Mary Anne Sousa,
Barros Maria Claudia Pinheiro,
Pinheiro Sávio Moita,
do Nascimento Ronaldo Ferreira,
de Abreu Matos Francisco José,
Silveira Edilberto Rocha
Publication year - 2005
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.1483
Subject(s) - ageratum conyzoides , essential oil , asteraceae , limonene , chemistry , botany , biology , chromatography , weed
Abstract Essential oils obtained by hydrodistillation of leaves from specimens of Ageratum conyzoides and Acritopappus confertus were investigated by GC–MS. The leaf essential oil of A. conyzoides consisted exclusively of the chromenes precocene I (95.4%) and II (4.5%). The essential oil of A. confertus consisted predominantly of monoterpenes, representing 81.0% of the total. The main component was myrcene (52.0%), with reasonable amounts of β ‐pinene (16.8%) and limonene (8.2%). The essential oil of A. conyzoides from the north‐east of Brazil has been reported as the major source of precocene I to date. Copyright © 2005 John Wiley & Sons, Ltd.