Insecticidal formulation based on essential oil from Ocimum basilicum Linn. Herb supported onto modified kaolinite for stored maize protection

In this study, essential oil was obtained by hydrodistillation from the leaves of Ocimum basilicum and it was analyzed by GC-MS. Eucalyptol (11.19 %), trans-iso eugenol (13.12 %), hexadecanoic acid methyl ester (19.26 %) and 9-octadecenoic acid (z)-methyl ester (25.12 %) had been the leading four ma...

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Veröffentlicht in:Heliyon 2024-08, Vol.10 (15), p.e35659, Article e35659
Hauptverfasser: Worku, Kendalem Woretaw, Taddesse, Abi M., Abera, Solomon, Sivasubramanian, Muthusaravanan, G., Neelaiah Babu
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Sprache:eng
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Zusammenfassung:In this study, essential oil was obtained by hydrodistillation from the leaves of Ocimum basilicum and it was analyzed by GC-MS. Eucalyptol (11.19 %), trans-iso eugenol (13.12 %), hexadecanoic acid methyl ester (19.26 %) and 9-octadecenoic acid (z)-methyl ester (25.12 %) had been the leading four main components of the plant leaves of the essential oil. The unmodified and modified kaolin was characterized and analyzed by XRD, FT-IR, TGA and SEM/EDX and thus the principal mineral of the nanoclay was proved to be kaolinite. The hydrodistiled essential oil in the absence of the clay support was evaluated within 24 h of exposure time and the outcome revealed that it was insecticidally active against the maize weevil, S. zeamais adults. Moreover, the exposure time effect, the formulation efficiency, the effect of remnant and stability of the prepared formulations were investigated and the results indicated an enhancement of bioinsecticides for a long period with upgraded persistence against the S. zeamais. Finally, the results recommend that O. basilicum essential oil - modified kaolinite formulations should be used as best options to chemical insecticides in pest control of stored products like stored maize grain insects, S. Zeamais. [Display omitted] •Essential oil was extracted from the O. basilicum leaves and the compounds were identified by GC-MS analysis.•Kaolinite clay was modified by organic surfactant and used as support for the hydrodistilled essential oils.•The supporting material has been characterized using XRD, SEM-EDX, FTIR and TGA.•The insecticidal activities of both unformulated and formulated essential oil were assessed and their activities were significantly observed.•The remnant and stability effect of the prepared formulation confirms an alternative and eco-friendly insecticide over the synthetic one.
ISSN:2405-8440
2405-8440
DOI:10.1016/j.heliyon.2024.e35659