Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

Insecticidal activity of polycaprolactone nanocapsules loaded with Rosmarinus officinalis essential oil in Tribolium castaneum (Herbst)

(2017) Insecticidal activity of polycaprolactone nanocapsules loaded with Rosmarinus officinalis essential oil in Tribolium castaneum (Herbst). Entomological Research. pp. 175-184. ISSN 1738-2297

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Abstract

In this study, the opportunity to enhance the insecticidal activity of Rosmarinus officinalis essential oil was studied for effective management of the red flour beetle, Tribolium castaneum, as a stored product pest beetle. Nanoprecipitation method was used to prepare rosemary oil-loaded nanocapsules. Bioassays were conducted at 27-30 degrees C temperature and 70-75 relative humidity in the dark. Fumigant toxicity of the non-formulated oil and nanocapsules of R. officinalis were investigated at 13.20, 15.92, 19.12, 23.04, and 27.76L/L air after 24 and 72h exposure and the contact toxicity of the non-formulated oil and nanocapsules were investigated at 4.28, 3.55, 2.95, 2.45 and 2.36L/cm(2) after 24h exposure. The major constituents of the essential oil of rosemary were -Pinene, 1,8-cineol, camphor, and cis-verbenone. Nanocapsules presented an average size (145 +/- 15nm) (+/- standard error SE) with a polydispersity index below 0.3, a negative zeta potential (-11.0 +/- 0.5mV), and a high encapsulation efficiency (78.20 +/- 0.93%). Scanning electron microscope photomicrograph of rosemary oil-loaded nanocapsules showed the presence of spherical nanocapsules with regular and homogeneous surfaces. In fumigant and contact toxicity, there were significant differences between non-formulated and rosemary oil-loaded nanocapsules in all the concentrations and times. The results suggested that nanoencapsulated essential oils from R. officinalis can be used for effective control in T. castaneum. When this technique is used, it can produce pesticides that have controlled-release properties and reduce the concentration of the applied doses and number of applications.

Item Type: Article
Keywords: botanical insecticide nanoprecipitation Rosmarinus officinalis stored product pest Tribolium castaneum contact insecticides phosphine resistance chemical-composition larvicidal activity beetle coleoptera fumigant toxicity rosemary oil monoterpenoids nanoparticles facilities Entomology
Divisions:
Page Range: pp. 175-184
Journal or Publication Title: Entomological Research
Journal Index: ISI
Volume: 47
Number: 3
Identification Number: https://doi.org/10.1111/1748-5967.12212
ISSN: 1738-2297
Depositing User: مهندس مهدی شریفی
URI: http://eprints.bmsu.ac.ir/id/eprint/4439

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