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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Plant compounds insecticide activity against Coleoptera pests of stored products
Autores:  MOREIRA, M.D.
PICANÇO, M.C.
BARBOSA, L.C. de A.
GUEDES, R.N.C.
CAMPOS, M.R. de
SILVA, G.A.
MARTINS, J.C.
Data:  2008-01-15
Ano:  2007
Palavras-chave:  Natural insecticide
Pest management
Alternative control
Secondary metabolites
Inseticida natural
Manejo de pragas
Controle alternativo
Metabolito secundário
Resumo:  The objective of this work was to screen plants with insecticide activity, in order to isolate, identify and assess the bioactivity of insecticide compounds present in these plants, against Coleoptera pests of stored products: Oryzaephilus surinamensis L. (Silvanidae), Rhyzopertha dominica F. (Bostrichidae) and Sitophilus zeamais Mots. (Curculionidae). The plant species used were: basil (Ocimum selloi Benth.), rue (Ruta graveolens L.), lion's ear (Leonotis nepetifolia (L.) R.Br.), jimson weed (Datura stramonium L.), baleeira herb (Cordia verbenacea L.), mint (Mentha piperita L.), wild balsam apple (Mormodica charantia L.), and billy goat weed or mentrasto (Ageratum conyzoides L.). The insecticide activity of hexane and ethanol extracts from those plants on R. dominica was evaluated. Among them, only hexane extract of A. conyzoides showed insecticide activity; the hexane extract of this species was successively fractionated by silica gel column chromatography, for isolation and purification of the active compounds. Compounds 5,6,7,8,3',4',5'-heptamethoxyflavone; 5,6,7,8,3'-pentamethoxy-4',5'-methilenedioxyflavone and coumarin were identified. However, only coumarin showed insecticide activity against three insect pests (LD50 from 2.72 to 39.71 mg g-1 a.i.). The increasing order of insects susceptibility to coumarin was R. dominica, S. zeamais and O. surinamensis.

2007
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  41092

http://www.alice.cnptia.embrapa.br/handle/doc/122761

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/106874/1/Plant-compounds.pdf
Editor:  Pesquisa Agropecuária Brasileira, Brasília, v. 42, n.7, p. 909-915, jul. 2007
Relação:  Área de Informação da Sede - Artigo em periódico indexado (ALICE)
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