Microencapsulated essential oils active against indianmeal moth
نویسنده
چکیده
SANNA PASSINO G., E. BAZZONI, M. D. L. MORETTI. 2004. Aceites esenciales microcapsulados activos contra polilla indianmeal. Bol. San. Veg. Plagas, 30: 125-132. Los efectos tóxicos de los aceites esenciales microcapsulados de Rosmarinus officinalis y de Thymus vulgaris fueron estudiados contra larvas de Plodia interpunctella. La actividad de aceite fue observada después de la contaminación de la dieta con las microcápsulas y después de la exposición a los vapores. La actividad de los aceites es producida, principalmente, por la contaminación con los principios activos lanzados de las microcápsulas y es, por lo tanto, una consecuencia de la ingestión. Los aceites de Thymus y de Rosmarinus fueron extremadamente eficaces contra los estadios larvarios I y II, determinándose una mortalidad superior al 50% (concentraciones de microcapsulados 0.1%). Aumentando la concentración de las microcápsulas en la dieta, se encontraron aumentos proporcionales en la mortalidad, que alcanzó valores del 80% en ambos tratamientos. La diferencia encontrada en la liberación de los aceites podía ser debida a las características hidrofílicas. Las microcápsulas de Thymus contienen todavia el 75% del aceite después de 25 días mientras que la formulación de Rosmarinus solamente 25% Palabras clave: Thymus, Rosmarinus, aceites esenciales, formulación, Plodia interpunctella
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