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Essential oil composition of Croton palanostigma Klotzsch from north Brazil

DOI: 10.1590/S0103-50532009000600026

Keywords: croton palanostigma, euphorbiaceae, essential oil composition, α-pinene, linalool, methyleugenol, limonene, brine shrimp larvicidal activity.

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the essential oils of leaves, twigs, branches, trunk bark and fruits of croton palanostigma were analyzed by gc and gc-ms. the main compounds found in the oil of the leaves were linalool (25.4%), (e)-caryophyllene (21.0%), methyleugenol (17.2%) and β-elemene (6.0%); in the oil of the twigs were α-pinene (41.4%), limonene (29.0%), sabinene (11.5%) and β-pinene (5.7%); in the oil of the branches were methyleugenol (24.1%), (e)-methylisoeugenol (15.3%), α-pinene (11.2%) and (e)-caryophyllene (8.5%); in the oil of the trunk bark were a-pinene (31.6%), methyleugenol (25.6%) and (e)-methylisoeugenol (23.7%); and in the oil of the fruits were linalool (42.7%), methyleugenol (16.3%) and β-elemene (6.4%). statistical analysis showed that the leaves and fruit, and the branches and trunk bark, have significant similarities between them. in addition, the trunk bark oil has high brine shrimp larvicidal activity (lc50, 3.71 ± 0.01 mg ml-1).


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