Volatile compounds of the leaves, flowers and fruits of Kielmeyera rugosa Choisy (Clusiaceae)

Abstract The essential oils from leaves, flowers, and fruits of Kielmeyera rugosa (family Clusiaceae) growing in Sergipe, north‐eastern Brazil, were obtained by hydrodistillation using a Clevenger‐type apparatus and analysed by GC–MS. Thirty‐six components were identified in the oil from fruits, which was dominated by sesquiterpene hydrocarbons. The nine major components identified (representing 76–77% of the oil) were δ‐valerolactone (1–9%), α‐cubebene (3–4%), α‐copaene (10–11%), β‐caryophyllene (11–16%), α‐humulene (3–5%), α‐selinene (4–5%), (E,E)‐α‐farnesene (2–9%), δ‐cadinene (23–32%) and 1‐epi‐cubenol (1–4%). In the leaf oil, 41 compounds were identified, with sesquiterpene hydrocarbons predominating. The 10 major constituents identified (representing 65–71% of the oil) were (Z)‐3‐hexen‐1‐ol (3%), α‐cubebene (11–13%), α‐copaene (11%), β‐cubebene (5–9%), β‐caryophyllene (9–13%), germacrene D (2–4%), cis‐β‐guaiene (3%), α‐selinene (6%), δ‐cadinene (7–10%) and 1‐epi‐cubenol (3–4%). Of the 25 compounds found in the K. rugosa, flower oil, the three main components identified (representing 92.7% of the oil) were the benzenoid compounds, benzyl alcohol (18.6%), 2‐phenylethanol (58.2%) and eugenol (15.9%). Copyright © 2006 John Wiley & Sons, Ltd.