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Composition and acaricidal activity of Laurus novocanariensis and Laurus nobilis essential oils against Psoroptes cuniculi
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Orientador(es)
Resumo(s)
The major components of Laurus nobilis and L. novocanariensis leaf oils were identifi ed and their acaricidal
activity against Psoroptes cuniculi evaluated. Monoterpenes were predominant in L. nobilis oil (91.8%), while ses quiterpenes were only 1.4%. The main components of this oil were 1,8-cineole (39.2%), α-terpinyl acetate (11.3%),
sabinene (10.6%) and linalool (7.4%). The acaricidal activity of L. nobilis oil, at a concentration of 10%, led to a
mortality rate of 73%; at 5% the average activity was signifi cantly reduced to 51%, while dilutions of 2.5%, 1.25%
and 0.625% were ineffective.
Laurus novocanariensis oil, compared to L. nobilis, was richer in sesquiterpenes; the main constituents were
α-pinene (10.4%), 1,8-cineole (9.6%) and β-selinene (7.2%). After 24 h of contact, the oil of L. novocanariensis killed
all the mites when used at 10% and 5% concentrations. At lower concentrations the mortality signifi cantly decreased;
a dilution of 0.625% was ineffective.
Descrição
Palavras-chave
Psoroptes cuniculi Laurus nobilis Laurus novocanariensis Lauraceae Acaricide Essential oil composition α-pinene Sabinene 1,8 cineole α-terpinyl acetate . Faculdade de Ciências Exatas e da Engenharia
Contexto Educativo
Citação
Macchioni, F., Perrucci, S., Cioni, P., Morelli, I., Castilho, P., & Cecchi, F. (2006). Composition and acaricidal activity of Laurus novocanariensis and Laurus nobilis essential oils against Psoroptes cuniculi. Journal of Essential Oil Research, 18(1), 111-114.
Editora
Taylor and Francis