Journal
SEMINA-CIENCIAS AGRARIAS
Volume 34, Issue 6, Pages 2853-2863Publisher
UNIV ESTADUAL LONDRINA
DOI: 10.5433/1679-0359.2013v34n6p2853
Keywords
Croton rhamnifolioides; essential oil; antimicrobial activity; chemical composition
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This study describes the chemical composition and antimicrobial activity of an essential oil from the leaves of Croton rhamnifolioides Pax& Hoffm., an aromatic plant widely distributed in northeastern Brazil and commonly used in folk medicine. Eight components were identified: 1.8-cineole (46.32%) as the major compound, followed by 1-felandreno (16.70%), p-cymene (10.21%), sabinene (8.14%) and trans-caryophyllene (4.81%). The essential oil exhibited antibacterial activity against Aeromonas hydrophila, Escherichia coli, Listeria monocytogenes, Salmonella Enteritidis and Staphylococcus aureus, with minimum inhibitory concentrations and minimum bactericidal concentrations ranging from 2.5 to 20 and 5 to 40 mu L.mL(-1), respectively. In addition, the essential oil also affected the cellular viability of these bacteria. The results suggest the need for research to establish the potential uses of this essential oil as a natural antimicrobial in the food industry.
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