Estudo da composição química, toxicidade e atividade moluscicida do óleo essencial Citrus sinensis (L.) Osbeck

molluscicidal activity of the essential oil extracted from the barks of Citrus sinensis (L.) Osbeck. For this, the essential oil was extracted quantitatively by hydrodistillation. Then, quantifications of its components were performed by gas chromatography coupled to mass spectrometry (CG-MS) and the toxicity and molluscicidal activity were tested, respectively, against Artemia salina and snails Biomphalaria glabrata . The results showed that the oil contains 81.50% of D-limonene (main constituent) and 0.06% of citronellal (minor component) and it has lethal activity (LC50) of 100.08 mg.L -1 and a toxicity, with LC50 of 321.84 mg.L -1 at a 95% confidence level. Therefore, the oil is active against the snail Biomphalaria glabrata and non-toxic to other living beings.