Chemical composition of Pourouma guianensis Aublet essential oils

✍ Scribed by D. Lopes; M. Koketsu; J. P. P. Carauta; R. R. de Oliveira; M. A. C. Kaplan

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 88 KB
• Volume: 14
• Category: Article
• ISSN: 0882-5734
• DOI: 10.1002/(sici)1099-1026(199907/08)14:4<233::aid-ffj813>3.0.co;2-l

✦ Synopsis

The essential oils from leaves, stem barks and pistillate ¯owers of Pourouma guianensis Aublet (Moraceae) were isolated by hydrodistillation and the volatile constituents were determined by HRGC and HRGC±MS. Methyl salicylate was the major compound identi®ed in all oils studied and was present in yields of 20.8% (leaves), 31.2% (stem bark) and 62.2% ( pistillate ¯owers). Altogether, 50 constituents have been identi®ed in the essential oil obtained from leaves, representing 76.6% of the total oil. Aliphatic C 6 alcohols and esters were, in number and in quantity, the principal constituents (29.5%). Oxygenated monoterpenes were found to be an important group of compounds and the most representative compound was linalol (2.4%). Thirty-eight components were identi®ed in the essential oil from stem barks, representing 79.3% of the total oil. Among the monoterpenes identi®ed, linalol was the principal compound (0.8%). The total content of fatty acids amounted to 40.0%. Analysis of the essential oil from pistillate ¯owers allowed the identi®cation of 36 compounds, representing 88.5% of the oil. Ten oxygenated monoterpenes were identi®ed, whereas linalol and its furan derivatives (9.7%), nerol (0.4%) and geraniol (1.3%) were the most abundant. Five aromatic derivatives were identi®ed in the pistillate ¯ower essential oil: methyl salicylate (62.2%), ethyl salicylate (0.1%), benzyl salicylate (0.2%), benzyl benzoate (0.3%) and benzaldehyde (0.1%).