Assessing the bioefficacy of a commercial temephos formulation (Temebate®) for controlling Aedes albopictus larvae in different land use localities in Malaysia

Wan-Norafikah, Othman; Aliah-Diyanah, Sharifah; Atiqah-Izzah, Zaifol; Chen, Chee Dhang; Sofian-Azirun, Mohd; Lailatul-Nadhirah, Asri; Ibahim, Mohammad Johari

doi:10.1016/j.exppara.2023.108627

Cited by 1 publication

(1 citation statement)

References 21 publications

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“…However, if there is any dilution or removal of water, the efficacy may decrease. In last few years, various researchers reported on the resistance of mosquito larvae towards temephos [37][38][39]. Since 1987, researchers have increased the dosage of temephos to control mosquito larvae, which may have increased the resistance level of the larvae towards temephos.…”

Section: Larvicidal Studiesmentioning

confidence: 99%

Gellan Gum- And Pectin-Magnetic Graphene Oxide Nanocarriers Loaded With Cinnamaldehyde for Mosquito Larvae Control

Wong,

Kamari,

Mohd Yusoff

et al. 2024

Jurnal Teknologi

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Magnetic nanoparticles have evolved over the last few decades as nanocarriers in drug delivery systems for hydrophobic drugs. Here, novel gellan gum magnetic graphene oxide (GG-GO-Fe3O4) and pectin magnetic graphene oxide (PEC-GO-Fe3O4) nanocomposites were prepared to carry cinnamaldehyde to control Aedes aegypti larvae. Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM) and scanning transmission electron microscopy (STEM) were employed to investigate the physicochemical characteristics of the nanocomposites. Entrapment efficiencies and loading capacities of nanocomposites on cinnamaldehyde were examined using ultraviolet-visible analysis. The successful cinnamaldehyde loading was confirmed by C-C and C-O stretches in the FTIR spectra. Results of in vitro release study showed the capabilities of GG-GO-Fe3O4 as a drug carrier system, extending the cinnamaldehyde release period for 36 h, and the release profiles for both nanocomposites fit the Korsmeyer-Peppas kinetic model with correlation coefficient (R2) values of over 0.9809. The cinnamaldehyde-loaded GG-GO-Fe3O4 nanocomposites induced 68% mortality after 72 h of exposure, with LC50 values ranging from 2.0488 and 15.9121 mg/L. The conjugation of GO-Fe3O4 with biopolymers improved the water solubility of cinnamaldehyde by 36.41 to 62.83 times vs. free cinnamaldehyde in water (1.42 mg/mL). Overall, these results are beneficial for researchers dealing with mosquito control and prevention.

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Section: Larvicidal Studiesmentioning

confidence: 99%