1. Acaricidal activity of Derris floribunda essential oil and its main constituent
Ana Claudia Fernandes AMARAL ; Aline de S. RAMOS ; José Luiz Pinto FERREIRA ; Márcia Reis PENA ; Neliton Marques DA SILVA ; Jean Michel S. MENEZES ; Jefferson Rocha de Andrade SILVA ; Geraldo J.N. VASCONCELOS
Asian Pacific Journal of Tropical Biomedicine 2017;7(9):791-796
Objective To evaluate the acaricidal activity of the essential oil obtained from roots of Derris floribunda (D. floribunda) (Miq.) Benth, and its main constituent nerolidol against the Mexican mite Tetranychus mexicanus (T. mexicanus) (McGregor). Methods The essential oil from the roots of D. floribunda collected in the Amazon region (Brazil) was obtained by hydrodistillation. Its chemical composition was determined by GC–MS analysis. The acaricidal activities of this essential oil and nerolidol, were evaluated by recording the number of dead females (mortality) and eggs (fertility). Results The essential oil showed sesquiterpenes as major volatile components. Nerolidol, the main component, represented 68.5% of the total composition of the essential oil. D. floribunda essential oil and nerolidol showed acaricidal activity, with LC