Open AccessEvaluation of the Toxicity ofVirola sebiferaCrude Extracts, Fractions and Isolated Compounds on the Nest of Leaf-Cutting Ants
Author(s) -
Keylla U. Bicalho,
Ana Paula Terezan,
Denise Cristina Martins,
Taís Garcia Freitas,
João Batista Fernandes,
Maria Fátima das Graças Fernandes da Silva,
Paulo C. Vieira,
Fernando C. Pagnocca,
Odair Corrèa Bueno
Publication year - 2011
Publication title -
psyche a journal of entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.168
H-Index - 22
eISSN - 1687-7438
pISSN - 0033-2615
DOI - 10.1155/2012/785424
Subject(s) - phytochemical , chemistry , bioassay , dichloromethane , column chromatography , ethyl acetate , quercetin , sesamin , chromatography , botany , biology , organic chemistry , food science , antioxidant , biochemistry , solvent , genetics
The phytochemical study of Virola sebifera leaves led to the isolation of three lignans: (+)-sesamin, (−)-hinokinin, and (−)-kusunokinin and three flavonoids: quercetin-3-O-α-L-rhamnoside, quercetin-3-O-β-D-glucoside, and quercetin-3-methoxy-7-O-β-D-glucoside by using techniques as high-speed counter-current chromatography and high-performance liquid chromatography. The crude extracts, fractions, and isolated compounds were evaluated for their insecticidal and fungicidal potential against Atta sexdens rubropilosa and its symbiotic fungus Leucoagaricus gongylophorus. The bioassay results showed a high insecticidal activity for the methanol crude extract of the leaves of V. sebifera and its n-hexane, dichloromethane and ethyl acetate fractions. The fungicidal bioassay revealed high toxicity of the lignans against L. gongylophorus
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