Summary
The paper describes the composition of essential oils obtained from Piper marginatum (leaves, 1.4%) : p-cymene 25,0%, monoterpenes 7.0%, sesquiterpenes 4.7%, sesquiterpene alcohols 33.3%, safrol 4.2%, ethylpiperonylketone 25.0%; Lippia grandis (leaves, 2.2%): p-cymene 19.6%, linalol 3.5%, thymol 10.0%, carvacrol 59.5%; Licaria macrophylla (trunk wood and bark, 0.5%): borneol 3%, nerolidol 5%. elemol 25%, sesquiterpene tertiary alcohol 40%.