Nano-emulsions of the essential oil of Baccharis reticularia and its constituents as eco-friendly repellents against Tribolium castaneum

Abstract:

Nanoproducts based on natural products have been studied as ecologically and economically sustainable alternatives for crop pest control. Baccharis reticularia DC. is a shrub endemic to Brazil, which leaves are traditionally used in aromatic medicinal baths. This study aims to evaluate the repellent activities of nano-emulsions containing the B. reticularia phytochemically characterized essential oil and some of its monoterpene constituents (limonene, α-pinene, and β-pinene) against Tribolium castaneum (Herbst). Essential oil was obtained by hydrodistillation of fresh leaves and stems and yielded 0.28 % (w/w). The main constituents of the essential oil were: limonene (14.6 %), β-myrcene (12.6 %), and bicyclogermacrene (12.5 %). The required hydrophile-lipophile balance (rHLB) of the nano-emulsions were: 13 (α-pinene) and 15 (essential oil, limonene, and β-pinene). All nano-emulsions showed mean droplet …

Año de publicación:

2021

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Fuente:

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