Preparation of fenpropathrin nanoemulsions for eco-friendly management of Helicoverpa armigera: Improved insecticidal activity and biocompatibility

Wei, Nuo; Hou, Chaoqun; Liu, Zirui; Liang, Qianwei; Lv, Ze; Meng, Xiaohan; Feng, Jianguo

doi:10.1016/j.colsurfa.2022.130442

Cited by 9 publications

(5 citation statements)

References 64 publications

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“…Previous research has suggested that 8% S-200 is associated with lower levels of earthworm toxicity and cytotoxicity . It is worth emphasizing that the S-200 concentration in our β-CYP EC-2 formulation was 52.5%.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Brucea javanica Oil on the Toxicity of β-Cypermethrin Emulsifiable Concentrate Formulation

Wu,

Yang,

Zheng

et al. 2024

ACS Appl. Mater. Interfaces

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Enhancing the performance of traditional pesticide formulations by improving their leaf surface wetting capabilities is a crucial approach for maximizing the pesticide efficiency. This study develops an emulsifiable concentrate (EC) of 4.5% β-cypermethrin containing Brucea javanica oil (BJO). The incorporation of BJO aims to improve the leaf-wetting properties of the EC formulation and enhance its insecticidal effectiveness. The droplet size and emulsion characteristics of β-CYP EC emulsion with varying concentrations of the emulsifier were evaluated, and changes after incorporating BJO were assessed to develop the optimal formulation. A comprehensive comparison was conducted among commercial 4.5% β-cypermethrin EC (β-CYP EC-1), 4.5% βcypermethrin EC with BJO (β-CYP EC-2), and 4.5% βcypermethrin EC without BJO (β-CYP EC-3). This comparison encompassed various factors including storage stability, insecticidal activity, cytotoxicity, and wetting performance on cabbage leaves. The results indicated that the ideal emulsifier concentration was 15% emulsifier 0201B. β-CYP EC-2 demonstrated superior wetting properties on cabbage leaves (the wetting performance of β-CYP EC-2 emulsion on cabbage leaves is 2.60 times that of the β-CYP EC-1 emulsion), heightened insecticidal activity against the third larvae of Plutella xylostella [diamondback moth (DBM)] [the insecticidal activity of the β-CYP EC-2 emulsion against the third larvae of DBM is 1.93 times that of the β-CYP EC-1 emulsion (12 h)], and more obvious inhibitory effects on the proliferation of DBM embryo cells than the other tested formulations. These findings have significant implications for advancing pest control strategies and promoting sustainable and effective agricultural practices.

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Section: Resultsmentioning

confidence: 99%

“…Finding an environmentally friendly alternative solvent is necessary to reduce EC toxicity . Solvesso-200 (S-200) is more environmentally friendly than toluene and other toxic solvents …”

Section: Introductionmentioning

confidence: 99%

Effect of Brucea javanica Oil on the Toxicity of β-Cypermethrin Emulsifiable Concentrate Formulation

Wu,

Yang,

Zheng

et al. 2024

ACS Appl. Mater. Interfaces

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“…The physiochemical properties of formulated microemulsion is commonly assessed by storage at different temperatures, such as 1and 54°C. The stability of oil‐in‐water emulsions can be predicted by measuring certain physical parameters (centrifugation, pH, density, and flash point) before and after storage tests (Feng et al 2018b, Wei et al 2023). The experimental results in this study indicated that the prepared formulation was physically and chemically stable.…”

Section: Discussionmentioning

confidence: 99%

Fabrication and characterization of microemulsion of some insecticides and evaluating their efficacy against cotton leaf worm on cotton crop under laboratory and field conditions

Derbalah,

Morsy,

El‐Zahi

et al. 2024

Entomological Research

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Traditional pesticide formulations have some shortcomings, including limited efficacy and the usage of huge amounts of insecticide, which has a negative impact on the environment. Using nano‐pesticide formulations reduces the amount of pesticide applied, minimizing pest control expenses and environmental contamination. As a result, this study was conducted to develop a microemulsion formulation containing emamectin benzoate or beta‐cyfluthrin with improved morphology, droplet size, emulsion stability, and persistence of foam. Moreover to assess the efficacy of the developed microemulsion in comparison to the convention alone against the Egyptian cotton leaf worm, Spodoptera littoralis (Boisd.) under both laboratory and field conditions. The results showed that the optimum conditions for emamectin benzoate microemulsion was 2% active ingredient, 5% (w/w) ethyl acetate, and DMF (3:2), 3.5% (w/w) Geronol ff4 and Etocas 35 (6:1), 5% (w/w) ethanol, and 86.5% (w/w) water, while for beta‐cyfluthrin, a 5.0% active ingredient, 15% (w/w) Solvesso 100 and ethyl acetate (2:1), 7.0% (w/w) Geronol ff4 and Etocas 35 (6:1), 10% (w/w) ethanol, and 68% (w/w) water. Under laboratory conditions, emamectin benzoate was more toxic than beta‐cyfluthrin to Spodoptera littoralis second and fourth instar larvae. Emamectin benzoate was more effective that beta‐cyfluthrin against Spodoptera littoralis in the field, whether as a microemulsion or a commercial product. Thus, microemulsions of tested insecticides with better formulation qualities may be more effective than traditional ones in controlling cotton leaf worm.

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“…The fenpropathrin nanoemulsions prepared by Wei et al exhibited higher stability and insecticidal activity to Helicoverpa armigera, but lower toxicity to earthworms and L02 cells. 25 Corrias et al produced a zoxamide nanosuspension with a particle size of 227 nm by a media milling technique, which increased pesticide water solubility and deposition and accumulation on tomato plants. 26 Suresh et al fabricated a nanopermethrin by solvent evaporation from an oil-in-water microemulsion.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, they have dominated the promotion and application of nanopesticides. The fenpropathrin nanoemulsions prepared by Wei et al exhibited higher stability and insecticidal activity to Helicoverpa armigera, but lower toxicity to earthworms and L02 cells . Corrias et al produced a zoxamide nanosuspension with a particle size of 227 nm by a media milling technique, which increased pesticide water solubility and deposition and accumulation on tomato plants .…”

Section: Introductionmentioning

confidence: 99%

Size-dependent Effect on Foliar Utilization and Biocontrol Efficacy of Emamectin Benzoate Delivery Systems

Ding,

Gao,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

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The development of nanopesticides provides new avenues for pesticide reduction and efficiency improvement. However, the size effect of nanopesticides remains unclear, and its underlying mechanisms of influence have become a major obstacle in the design and application of pesticide nanoformulations. In this research, the noncarrier-coated emamectin benzoate (EB) solid dispersions (Micro-EB and Nano-EB) were produced under a constant surfactant-to-active ingredient ratio by a self-emulsifying-carrier solidification technique. The particle size of Micro-EB was 162 times that of spherical Nano-EB. The small size and large specific surface area of Nano-EB facilitated the adsorption of surfactants on the surface of the particles, thereby improving its dispersibility, suspensibility, and stability. The pinning effect of nanoparticles significantly suppressed droplet retraction and rebounding. Moreover, Nano-EB exhibited a 25% higher retention of the active ingredient on cabbage leaves and a 70% higher washing resistance than Micro-EB, and both were significantly different. The improvement of abilities in wetting, spreading, and retention of Nano-EB on crop leaves contributed to the increase in foliar utilization, which further resulted in a 1.6-fold enhancement of bioactivity against target Spodoptera exigua compared to Micro-EB. Especially, Nano-EB did not exacerbate the safety risk to the nontarget organism zebrafish with no significant difference. This study elaborates the size effect on the effectiveness and safety of pesticide formulations and lays a theoretical foundation for the development and rational utilization of efficient and environmentally friendly nanopesticides.

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Preparation of fenpropathrin nanoemulsions for eco-friendly management of Helicoverpa armigera: Improved insecticidal activity and biocompatibility

Cited by 9 publications

References 64 publications

Effect of Brucea javanica Oil on the Toxicity of β-Cypermethrin Emulsifiable Concentrate Formulation

Effect of Brucea javanica Oil on the Toxicity of β-Cypermethrin Emulsifiable Concentrate Formulation

Fabrication and characterization of microemulsion of some insecticides and evaluating their efficacy against cotton leaf worm on cotton crop under laboratory and field conditions

Size-dependent Effect on Foliar Utilization and Biocontrol Efficacy of Emamectin Benzoate Delivery Systems

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