Co-encapsulation of imidacloprid and lambda-cyhalothrin using biocompatible nanocarriers: Characterization and application

Moradi, Fatemeh; Hejazi, Mohammad Saeid; Hamishehkar, Hamed; Enayati, Ahmad Ali

doi:10.1016/j.ecoenv.2019.02.092

Cited by 39 publications

(8 citation statements)

References 58 publications

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“…This band was observed as a very weak band at 2135 cm −1 in all samples after adsorption [ 39 ]. The C = O vibration band exhibits a very strong IR band in the region between 1850 and 1650 cm −1 , and this band is related to the stretching vibration of benzene skeleton [ 40 , 41 ]. After the adsorption process, this band appeared at around 1740 cm −1 .…”

Section: Resultsmentioning

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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Section: Resultsmentioning

confidence: 99%

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

2021

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“…Overall, the simultaneous reduction of liposome size and polydispersity remains challenging for established liposome production techniques, particularly at higher system throughput. Defining a production figure of merit (Q) as the inverse of the product of liposome diameter(d) and polydispersity, i.e., Q = d −1 PDI −1 , we find that Q values for the MVF platform are generally in the range of 0.1-0.4, whereas reported data for both ethanol injection [81][82][83][84][85][86][87] and chaotic advection micromixing 25,48,50,[88][89][90][91] yield Q values below 0.15 (Supplementary Fig. 4).…”

Section: Liposome Synthesismentioning

confidence: 98%

Microfluidic vortex focusing for high throughput synthesis of size-tunable liposomes

2022

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Control over vesicle size during nanoscale liposome synthesis is critical for defining the pharmaceutical properties of liposomal nanomedicines. Microfluidic technologies capable of size-tunable liposome generation have been widely explored, but scaling these microfluidic platforms for high production throughput without sacrificing size control has proven challenging. Here we describe a microfluidic-enabled process in which highly vortical flow is established around an axisymmetric stream of solvated lipids, simultaneously focusing the lipids while inducing rapid convective and diffusive mixing through application of the vortical flow field. By adjusting the individual buffer and lipid flow rates within the system, the microfluidic vortex focusing technique is capable of generating liposomes with precisely controlled size and low size variance, and may be operated up to the laminar flow limit for high throughput vesicle production. The reliable formation of liposomes as small as 27 nm and mass production rates over 20 g/h is demonstrated, offering a path toward production-scale liposome synthesis using a single continuous-flow vortex focusing device.

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“…45 Likewise, prepared nanoliposomes containing a mixture of imidacloprid and LAM generated formulations with particles sizes of 57 nm, and a coating with chitosan provided greater stability, presenting zeta potential values > 30 mV. 46 Toxicological results show that the nanoformulations of BFT and LAM with synergists presented higher toxicity against of E. heros than commercially available products containing these active ingredients. The high lethality can be explained by the reduction caused by synergists on the activity of detoxification enzymes including P450 monooxygenases and glutathione S-transferases enzymes, confirming that these enzymes are mainly responsible for the metabolic detoxification of pyrethroids in E. heros from Brazil.…”

Section: Discussionmentioning

confidence: 99%

“…43,44 No previous studies that had encapsulated these insecticides in NLCs were found, however our results corroborate with other nanoformulations. 45,46 The BFT compound encapsulated with polyvinylpyrrolidone-based nanoparticles through the nanoprecipitation technique also generated particles with sizes from 200 to 350 nm, with an encapsulation efficiency > 90%. 45 Likewise, prepared nanoliposomes containing a mixture of imidacloprid and LAM generated formulations with particles sizes of 57 nm, and a coating with chitosan provided greater stability, presenting zeta potential values > 30 mV.…”

Section: Discussionmentioning

confidence: 99%

Development and biological evaluation of nanoencapsulated‐based pyrethroids with synergists for resistance management of two soybean pests: insights for new insecticide formulations

Boff

Reis

Oliveira

et al. 2022

Pest Management Science

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Background: Chemical control is commonly used against Euschistus heros (F.) and Chrysodeixis includens (Walker) in soybean fields in South America. However, previous studies reported that these pests have reduced susceptibility to pyrethroids in Brazil. On this basis, we developed and evaluated nanoencapsulated-based bifenthrin (BFT) and ⊗-cyhalothrin (LAM) with the synergists piperonyl butoxide (PBO) and diethyl maleate (DEM) for insect resistance management (IRM).Results: Nanoformulations of BFT and LAM with PBO and DEM presented good physical-chemical characteristics and were stable. The spherical morphology of all systems and the encapsulation efficiency in nanostructured lipid carriers did not change when synergists were added. Nanoencapsulated BFT with DEM applied topically increased the susceptibility of E. heros to BFT by 3.50-fold. Similarly, nanoencapsulated BFT and LAM with PBO in diet-overlay bioassays increased the susceptibility of C. includens to both chemicals by up to 2.16-fold. Nanoencapsulated BFT and LAM with synergists also improve control efficacy of both species, causing higher mortality than commercial products containing these chemistries.Conclusions: It is possible to develop nanoencapsulated-based formulations of BFT and LAM with PBO or DEM, and these nanoformulations have the potential to improve control of E. heros and C. includens with recognized low susceptibility to pyrethroids. This study provides updates for designing new insecticide formulations for IRM.

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Co-encapsulation of imidacloprid and lambda-cyhalothrin using biocompatible nanocarriers: Characterization and application

Cited by 39 publications

References 58 publications

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

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

Microfluidic vortex focusing for high throughput synthesis of size-tunable liposomes

Development and biological evaluation of nanoencapsulated‐based pyrethroids with synergists for resistance management of two soybean pests: insights for new insecticide formulations

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