J Ethnopharmacol. 2001 Jun; 76(1): 105-7.

Chemical composition of the essential oil from the leaves of Piper fulvescens, a plant traditionally used in Paraguay.

Vila R, Milo B, Tomi F, Casanova J, Ferro EA, CaÃ±igueral S.

Unitat de Farmacologia i FarmacognÃ²sia, Facultat de FarmÃ¡cia, Universitat de Barcelona, AV Diagonal, 643, E-08028, Barcelona, Spain.

The essential oil from the leaves of the aromatic aniseed smelling plant Piper fulvescens, obtained by hydrodistillation, was investigated by GC and GC-MS, as well as by 13C-NMR after fractionation of the oil by column chromatography. A total of 37 constituents, representing 78.2% of the oil were identified. The main compounds were trans-anethole (26.4%) and ishwarane (12.1%), an unusual sesquiterpene hydrocarbon.