This study evaluated the antimicrobial, antioxidant and toxicity
activity of essential oils (EOs) of Hymenaea courbaril L. var. courbaril
bark and Syzygium cumini (L.) Skeels leaves. The major constituent of
the EO of H. courbaril was β-ocimene (23.33%) and the EO of S. cumini
was isocaryophyllene (18.01%). Both EOs showed efficient antioxidant
activity and toxicity against Artemia salina. The EOs showed
bactericidal activity against E. coli, S. aureus, P. aeruginosa,
Salmonella sp., B. cereus and P. mirabilis. The results obtained are
encouraged by the potential use of the OE's studied in the control and
fight of pathogenic microorganisms.