Volatile compositions of two Asteraceae from the north-east of Brazil: Ageratum conyzoides and Acritopappus confertus (Eupatorieae)
✍ Scribed by Mary Anne Sousa Lima; Maria Claudia Pinheiro Barros; Sávio Moita Pinheiro; Ronaldo Ferreira do Nascimento; Francisco José de Abreu Matos; Edilberto Rocha Silveira
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 72 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0882-5734
- DOI
- 10.1002/ffj.1483
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✦ Synopsis
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.