Essential oils from some Myrceugenia species (Myrtaceae)

✍ Scribed by Renata P. Limberger; Cláudia A. Simões-Pires; Marcos Sobral; Chantal Menu; Jean-Marie Bessiere; Amélia T. Henriques

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 72 KB
• Volume: 17
• Category: Article
• ISSN: 0882-5734
• DOI: 10.1002/ffj.1113

✦ Synopsis

Abstract

Essential oils from Myrceugenia euosma, M. foveolata, M. pilotantha, M. myrtoides and M. oxysepala, collected in Southern Brazil, were analysed by GC and GC–MS. Seventy compounds were identified, representing 86–99% of the oil content of the investigated species. The oils from M. foveolata, M. pilotantha and M. myrtoides were characterized by cyclic sesquiterpenes (67–90%), mainly those from the germacrene cyclization pathway. M. foveolata showed a predominance of globulol (21.3%) and epi‐globulol (17.8%), while in the oils from M. pilotantha and M. myrtoides, spathulenol (18.7% and 23.8%, respectively) was the most representative. The oil from M. oxysepala and M. euosma were found to be quite distinct from the other species. The oil of M. eousma showed a predominance of nerolidol (46.7%) and epi‐globulol (33.4%), and that of M. oxysepala was made up mainly by oxygenated compounds (80.4%), being 29% terpenes and 51.4% aliphatic compounds, such as aldehydes (nonadecanal, 20.6%; dodecanal, 6.8%); methyl‐ketones (2‐tridecanone, 5.0%) and alcohols (n‐undecanol, 4.5%). Copyright © 2002 John Wiley & Sons, Ltd.