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Pontes,Wendel José Teles; Oliveira,José Cândido Guerra de; Câmara,Cláudio Augusto Gomes da; Lopes,Adelmo C. H. R.; Gondim Júnior,Manoel Guedes Correia; Oliveira,José Vargas de; Barros,Reginaldo; Schwartz,Manfred Oswald Erwin. |
Essential oils from leaves and fruits of Protiumheptaphyllum collected in Tamandaré beach Pernambuco/Brazil were analysed by GC/MS and tested for toxicity and repellent effect against the two spotted spider mite (Tetranychus urticae). The major constituent identified in the fruits was alpha-terpinene (47.6 %) whereas oil from leaf contained mainly sesquiterpenes such as 9-epi-caryophyllene (21.4 %), trans-isolongifolanone (10.7 %) and 14-hydroxi-9-epi-caryophyllene (16.7 %). The fruit oil was found to be more effective against the mite when compared to the leaf oil. Both showed mortality properties and oviposition deterrence in higher concentration (10 µl.l-1 air), but only the essential oil from fruits induced repellence on T. urticae. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Protium heptaphyllum; Essential oil; Tetranychus urticae; Acaricidal activity. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672007000100012 |
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Torres,Fernando Cidade; Lucas,Aline Machado; Ribeiro,Vera Lucia Sardá; Martins,João Ricardo; Poser,Gilsane von; Guala,Maria Silvia; Elder,Heriberto Victor; Cassel,Eduardo. |
The aim of this work was to study the influence of essential oil fractionation on acaricidal activity against the cattle tick Rhipicephalus (Boophilus) microplus. The citronella (Cymbopogon winterianus J.) and pepper tree (Schinus molle L.) essential oils were fractionated by vacuum distillation yielding fractions that were analyzed by the GC/MS. Laboratory tests were carried out to determine the effect of the total essential oil and fractions on larvae of the cattle tick R. (B.) microplus. The fractions 04 and 05 of the C. winterianus essential oil were the most active showing LC50 values of 1.20 and 1.34 μL/mL, respectively. The LC50 of the total oil was 3.30 μL/mL while the effect of the fractions 01, 02 and 03 was less pronounced, with LC50 values of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cymbopogon winterianus J.; Schinus molle L.; Acaricidal activity; Vacuum distillation; Rhipicephalus (Boophilus) microplus. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000400018 |
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