Volatile compounds from Rosmarinus officinalis L. and Baccharis dracunculifolia DC. growing in southeast coast of Brazil

Abstract

Chemical composition of leaf volatiles of Rosmarinus officinalis and Baccharis dracunculifolia cultured in Southeast of Brazil has been characterized, by GC/MS after simultaneous distillation-extraction. The main components in volatiles of these species showed in common a-pinene, myrcene, 1, 8 cineole and camphor. Camphor was the major component among volatiles of B. dracunculifolia and R. officinalis with concentrations exceeding 25%. B. dracunculifolia volatiles possessed more sesquiterpenes (21.4%) than R. officinalis (16.7%), such as caryophyllene (1.9%) and a-humulene (0.4%). Lower concentrations of nerolidol and spathulenol were achieved, in volatiles of B. dracunculifolia. Considering both species, there was a predominance of monoterpenes.