Microencapsulation of Cypermethrin Via Interfacial Polymerization for Controlled Release Application

Kamble, Vinayak; Sawant, Manohar R.; Mahanwar, Prakash A.

doi:10.1016/j.matpr.2018.06.636

Cited by 15 publications

(7 citation statements)

References 19 publications

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“…DLS analysis revealed that 25% of capsules formed with hydrodynamic diameter of ≤100 nm ( Figure 5 B). The average size (1655 nm) of the microcapsules formed appeared to be much smaller than the earlier reports ( Beestman and Deming, 1983 ; Kamble et al., 2018 ; Yadav et al., 1990 ). The initial formation of finer emulsion promoted the formation of smaller sized capsules ( Yuan et al., 2019 ).…”

Section: Resultscontrasting

confidence: 69%

Encapsulation, release and insecticidal activity of Pongamia pinnata (L.) seed oil

Purkait

Mukherjee

Hazra

et al. 2021

Heliyon

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Pongamia pinnata (L.) seed oil is effective for its insecticidal and larvicidal activities. However, its low aqueous solubility, high photosensitivity, and high volatility restrict its application for the control of agricultural pests. Encapsulation can be an effective technique to overcome such hindrances. Therefore, P. pinnata oil (PO) was extracted from its seeds and analyzed for karanjin content (3.18%) by GC-MS/MS as the marker compound. Micro-encapsulation (MC) of PO was prepared by interfacial polymerization between isocyanates and polyamine and tested for insecticidal and larvicidal activities. Bioassay of the developed formulations was tested in-vitro against 2 nd instar larvae of Bombyx mori (Bivoltine hybrid) and in-vivo insecticidal bio-efficacy was tested against aubergine aphid ( Aphis gossypii G.) and whitefly ( Bemisia tabaci G.). Various properties of micro-capsules viz., stability, size, oil content and release kinetics were examined. Average diameter of capsules (1 μm) with Zeta potential (-16 mV) was indicated by the Dynamic Light Scattering (DLS) instrument. Existence of PO in the microcapsules was confirmed by an optical microscopic study. Spectroscopic analysis revealed 87.4% of PO was encapsulated in polyurea shell. The shelf-life ( T 10 ), half-life ( T 50 ), and expiry-life ( T 90 ) of polyurea coated capsules were 11.4, 75.3 and 250.0 h, respectively. Polyurea coated PO capsule formulation showed evidence of in-vitro toxicity against 2 nd instar larvae of B. mori ( LC 50 = 1.1%; LC 90 = 5.9%). The PO formulation also exhibited 67.0–71.8% and 62.4–74.8% control of aphid and whitefly population in aubergine at 4.0% dose following 7–14 days after application. The study unveiled its significance in developing controlled release herbal formulations of P. pinnata as an alternative to harmful conventional synthetic insecticides for crop protection.

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Section: Resultscontrasting

confidence: 69%

Encapsulation, release and insecticidal activity of Pongamia pinnata (L.) seed oil

Purkait

Mukherjee

Hazra

et al. 2021

Heliyon

View full text Add to dashboard Cite

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“…This method provides basic data for improving the effective utilization rate of controlledrelease systems. Kamble et al 83 prepared cypermethrin/ polyurea microcapsules by interfacial polymerization, and these microcapsules exhibited excellent encapsulation efficiencies and loading abilities for cypermethrin (up to 96.23%). Controlled release of cypermethrin was observed over 60 days in a trial examining microcapsules with different core−shell ratios.…”

Section: Preparation Methods For Controlled-release Formulationsmentioning

confidence: 99%

Advances in Controlled-Release Pesticide Formulations with Improved Efficacy and Targetability

Sun

Jiang

et al. 2021

J. Agric. Food Chem.

107

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Pesticides are commonly used in modern agriculture and are important for global food security. However, postapplication losses due to degradation, photolysis, evaporation, leaching, surface runoff, and other processes may substantially reduce their efficacy. Controlled-release formulations can achieve the permeation-regulated transfer of an active ingredient from a reservoir to a target surface. Thus, they can maintain an active ingredient at a predetermined concentration for a specified period. This can reduce degradation and dissipation and other losses and has the potential to improve efficacy. Recent developments in controlled-release technology have adapted the concepts of intelligence and precision from the pharmaceutical industry. In this review, we present recent advances in the development of controlled-release formulations and discuss details of the preparation methods, material improvements, and application technologies.

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“…In this study, Cypermethrin (CM), Deltamethrin (DM) and Indoksacarb (IC) insecticides, which are widely used in agriculture, were selected. CM [ 20 , 26 ] and DM [ 27 ] are defined as synthetic pyrethroids and IC [ 28 ] is defined as oxadiazine insecticide. The aim was to remove the commonly used insecticides from the environment via eggshells.…”

Section: Introductionmentioning

confidence: 99%

Eggshell as a biomaterial can have a sorption capability on its surface: A spectroscopic research

2021

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In this study, eggshell as a biomaterial was used as an adsorbent. This natural waste material is easy to access and cost-free. The surface of the eggshell with its porous structure showed affinity to adsorb damaging chemicals. In particular insecticides cause serious environmental pollution in agriculture, and this is a general problem all over the world. The aim was to remove insecticides from the environment and monitor the pesticides on the surface of eggshells by atomic force microscopy (AFM) images, Fourier transform infrared (FTIR) and UV/Vis spectroscopic techniques. Five types of eggshells, Denizli Hen, Coturnix Coturnix Japonica, Light Brahma Chicken, Alectoris Chukar and ISA Tinted -White , were used. Since they are commonly used, Cypermethrin, Deltamethrin and Indoxacarb were chosen as insecticide samples. The interaction effect of insecticides on the surface of eggshells was determined by AFM images; it was seen that the semispherical surface structures of the eggshells were flattened after adsorption. FTIR spectroscopy was used both to detect structural analysis and to determine the adsorption influence. In addition, UV-Vis spectroscopy was performed to evaluate the adsorption and desorption process. Porous media of different types of eggshells with an aqueous solution of insecticides had an electronegativity attractive surface which makes it an ideal adsorbent via hydroxyl groups.

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Microencapsulation of Cypermethrin Via Interfacial Polymerization for Controlled Release Application

Cited by 15 publications

References 19 publications

Encapsulation, release and insecticidal activity of Pongamia pinnata (L.) seed oil

Encapsulation, release and insecticidal activity of Pongamia pinnata (L.) seed oil

Advances in Controlled-Release Pesticide Formulations with Improved Efficacy and Targetability

Eggshell as a biomaterial can have a sorption capability on its surface: A spectroscopic research

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