A pH-responsive emulsion stabilized by alginate-grafted anisotropic silica and its application in the controlled release of λ-cyhalothrin

Chen, Kai; Yu, Gaobo; He, Furui; Zhou, Qingfeng; Xiao, Dunchao; Li, Jiacheng; Ye, Feng

doi:10.1016/j.carbpol.2017.07.046

Cited by 69 publications

(24 citation statements)

References 48 publications

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“…This ordinary emulsion requires the input of high mechanical energy, such as high-speed shear, in industrial preparations. 14,15 EW causes flocculation, coalescence, stratification, and other unstable phenomena because of the large diameter and wide distribution of the droplets. These factors critically influence the physicochemical properties of the products and pest control effects.…”

Section: Introductionmentioning

confidence: 99%

Development of abamectin‐loaded nanoemulsion and its insecticidal activity and cytotoxicity

Feng

Chen

Liu

et al. 2020

Pest Management Science

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BACKGROUND: Owing to the advantages of high-efficiency, environmental protection and safety, nanoemulsions have become a highly popular water-insoluble pesticide delivery system in recent years. RESULTS: In this study, abamectin-loaded nanoemulsion with remarkable physical stability and application performance was obtained by selecting the type and concentration of surfactant and the emulsification method. The optimal formula was 2% abamectin and 5% castor oil polyoxyethylene (EL-40) dissolved in 7.5% hydrocarbon solvent (S-200) made up to 100% with deionized water, which conformed to the quality indicators from the Food and Agriculture Organization (FAO) standards. Droplets on cabbage leaves showed a small dynamic contact angle, which ensured that the resulting nanoemulsion exhibited excellent wettability and diffusivity. Compared with emulsifiable concentrates (EC) and microemulsions (ME), the abamectin-loaded nanoemulsion had the lowest LC 50 (0.0686 mg L −1) to third-instar larva of Plutella xylostella, causing the larval body to blacken and shrivel, which improved insecticidal activity. In addition, the abamectin-loaded nanoemulsion had low cytotoxicity. The viability of dendritic cells with added nanoemulsion reached 100% after 2 h, whereas that of cells with EC and ME was lower. After 24 h, the cell viability of dendritic cells with added ME was 0. CONCLUSION: This research facilitated the design and fabrication of nanoemulsions for water-insoluble pesticide to enhance insecticidal activity, lower cytotoxicity and reduce environmental pollution.

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Section: Introductionmentioning

confidence: 99%

Development of abamectin‐loaded nanoemulsion and its insecticidal activity and cytotoxicity

Feng

Chen

Liu

et al. 2020

Pest Management Science

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“…Pickering emulsions are known to spontaneously disperse small droplets of two immiscible liquids stabilized by solid nano-and micro-particles (silica, triacylglycerols, soft polymers, or clay) adsorbed at the interface. Pickering emulsions show excellent properties as to encapsulate any substance, to regulate the emulsion consistency by changing the solid concentration, and to get porous materials and special rheological behavior [37][38][39][40]. Dai et al enhanced the stabilization of Pickering emulsion by using silica nanoparticles (SNP) in dimethyldodecylamine oxide (OA-12) and explained the dynamic behaviors of interface and the hydrophilic-lipophilic balance of particle surfaces [41].…”

Section: Nano-emulsion Systemsmentioning

confidence: 99%

Introductory Chapter: The Perspective of Emulsion Systems

Karakuş¹

2018

Science and Technology Behind Nanoemulsions

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“…Emulsions are categorized into two types: oil-inwater (O/W) and water-in-oil (W/O) emulsions [26]. Oil-in-water (O/W) emulsions have many important industrial applications covering different aspects in food [27], pharmaceuticals [28], petrochemicals [29], cosmetics [30] and agrochemicals [23,31]. Agrochemical oil-in-water emulsion (EW) is a formulation in which waterinsoluble liquid pesticides or organic solvents containing dissolved solid pesticides are dispersed as small droplets in water to form oilin-water emulsions by adding suitable surfactants and energy [32].…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Cinnamaldehyde Based Emulsion for Phytopathogenic Bacterial Growth Inhibitor

Mohammed

El-Rahman

2020

JAMB

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The formulation plays an essential role in achieving the successful delivery and biological activity of any plant protection products. This study aimed to develop a cinnamaldehyde water-based formulation (oil-in-water emulsion) via a high-shear stirring emulsification method. Cinnamaldehyde emulsion was successfully prepared and characterized using different physicochemical parameters (emulsion stability, persistent foaming, accelerated storage at 54°C for 2 weeks, and stability at 0°Cfor one week, as well as pH, surface tension, flash point, viscosity, and particle size distribution). Also, the antibacterial activity was verified in vitro against some important phytopathogenic bacteria; Erwinia amylovora, Pectobacterium aroidearum, Pseudomonas aeruginosa, and Ralstonia solanacearum using well diffusion method. In addition, the minimum inhibition concentration (MIC) was determined by the twofold dilution method. The results revealed that the prepared formulation showed good storage stability, exhibited non-Newtonian shear-thinning behavior and promising antibacterial activity. The inhibition zones against the tested phytopathogenic bacteria were ranged from 10.3 mm to 52.0 mm. MICs of the prepared formulation were 15.63, 31.25, 62.5, and 15.63 μl/ml against Erwinia amylovora, Pectobacterium aroidearum, Pseudomonas aeruginosa and Ralstonia solanacearum, respectively. Our results provide an environmentally friendly formulation with promising activity to control the agricultural crop disease.

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A pH-responsive emulsion stabilized by alginate-grafted anisotropic silica and its application in the controlled release of λ-cyhalothrin

Cited by 69 publications

References 48 publications

Development of abamectin‐loaded nanoemulsion and its insecticidal activity and cytotoxicity

Development of abamectin‐loaded nanoemulsion and its insecticidal activity and cytotoxicity

Introductory Chapter: The Perspective of Emulsion Systems

Eco-Friendly Cinnamaldehyde Based Emulsion for Phytopathogenic Bacterial Growth Inhibitor

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