Sustained release insect repellent microcapsules using modified cellulose nanofibers (mCNF) as pickering emulsifier

Kadam, Sandip L.; Yadav, Prashant; Bhutkar, Siddhant; Patil, Vishal D.; Shukla, Parshuram G.; Shanmuganathan, Kadhiravan

doi:10.1016/j.colsurfa.2019.123883

Cited by 35 publications

(22 citation statements)

References 52 publications

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“…Various Pickering emulsion systems. Simple emulsions: direct (O/W − ), inverse (W/O , ); double emulsions (W/O/W, , O/W/O); and peculiar emulsions (W/W, O/O) stabilized by organic particles with a natural origin.…”

Section: Organic Particles With Natural Origin As Pickering Emulsion ...mentioning

confidence: 99%

“…Encapsulation of an insect repellent by using Pickering emulsion templated capsules was described by Kadam and co-workers . First, they formulated a modified CNF-stabilized Pickering emulsion containing the active compound.…”

Section: Polymerization Of Pickering Emulsions Stabilized With Natura...mentioning

confidence: 99%

“…Balakrishnan et al showed that protein particles could be efficiently trapped at the interface . Peddireddy et al enhanced macroscopic stabilization using cellulose nanocrystals (CNCs) as stabilizers and as gelling agents in the continuous phase at the same time. , Similarly, oil-in-oil (O/O) emulsions are obtained by mixing polar and apolar solvents, leading to phase separation, which could be stabilized by the use of modified cellulose nanofibers for instance …”

Section: Introductionmentioning

confidence: 99%

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New Insights into the Formulation and Polymerization of Pickering Emulsions Stabilized by Natural Organic Particles

et al. 2021

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Pickering emulsions are known to be an efficient and greener alternative to surfactant-stabilized emulsions. Particles, as key component of these systems, are responsible for their higher kinetic stability and in recent years, the use of natural organic stabilizers has emerged as a solution to promote sustainability. By conferring them stimuli-responsiveness and/or by polymerizing the Pickering emulsion itself, the design of smart and advanced systems can be achieved. Radical polymerization has been by far the most studied polymerization route, and a wide range of materials were successfully synthesized: foams, composites, capsules, or imprinted microspheres. Not only the sustainability of these materials is improved, but their

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Section: Organic Particles With Natural Origin As Pickering Emulsion ...mentioning

confidence: 99%

Section: Polymerization Of Pickering Emulsions Stabilized With Natura...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New Insights into the Formulation and Polymerization of Pickering Emulsions Stabilized by Natural Organic Particles

et al. 2021

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“…Nanocellulose has been widely recognised as an environment-friendly carrier in the biomedicine field, but research on the use of nanocellulose as a larvicide carrier is still lacking. To date, only one research was found on the use of modified CNF in the microencapsulation of insect repellent against adult mosquitoes (Kadam et al, 2019). Herein, in the current study, the authors' aim is to assess the application of KCNF in the larvicide formulation where the larvicide, namely temephos, was impregnated onto the KCNF fibres.…”

Section: Introductionmentioning

confidence: 99%

Larvicidal efficacy of temephos impregnated onto kenaf cellulose nanofibre to control Aedes aegypti (Diptera: Culicidae) larvae

2021

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Larviciding is an effective control method in managing mosquito-borne diseases. However, most of the current larvicide formulations have raised environmental concerns due to the presence of non-biodegradable inert or carrier materials. Therefore, the utilisation of biodegradable natural cellulosic fibres has created much attention. This study aims to evaluate the application of biodegradable kenaf cellulose nanofibre (KCNF) in larvicide formulation where the larvicide, namely temephos, is impregnated onto the fibre matrix (KCNF+T). The bioefficacy of the formulation was evaluated against Aedes aegypti (A. aegypti) mosquito larvae. The presence of the temephos on the KCNF was evaluated through micromorphological analysis using a field emission scanning electron microscope (FESEM) and a transmission electron microscope (TEM), while the quantity of temephos impregnated, released, and retained on the fibres upon dispersion in water were determined using high performance liquid chromatography (HPLC). It was observed that 97% of the temephos (0.1 mg) were impregnated on the KCNF. Upon dispersion in water, 53% of the temephos were released from the KCNF+T and the retention of temephos on the KCNF+T gradually decreased to 30%, 17%, and 7% on the first, third, and fifth month, respectively. Exposure of the A. aegypti larvae to the KCNF+T at concentrations ranging between 0.006 to 0.01 mg/L was effective in killing A. aegypti larvae at 17-25 folds as compared to using the temephos without KCNF. Microscopic examination revealed the accumulation of the KCNF on the larval appendages.In conclusion, this study demonstrated that the utilisation of KCNF in pesticide formulation is an effective way of delivering the temephos to control A. aegypti mosquito larvae.

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“…Nanocellulose has been widely recognized as an environmentally friendly carrier in biomedicine eld but research on the use of nanocellulose as a larvicide carrier is still lacking. To date, only one research was found on the use of modi ed CNF in the microencapsulation of insect repellent against adult mosquitoes (Lin and Dufresne 2014;Kadam et al 2019). Herein, in the current study, we aim to evaluate KCNF as a nanocarrier for temephos in controlling Ae.…”

Section: Introductionmentioning

confidence: 99%

Application of Renewable Kenaf Cellulose Nanofiber as a Temephos Nanocarrier for Control of Aedes Aegypti (Diptera: Culicidae) Larvae

Pengiran

Kamaldin

Fen

et al. 2021

Preprint

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Larviciding is an effective control method in managing mosquito-borne diseases. However, current carrier materials used in larvicides formulation raised environmental concerns due to its non-renewable origin. Herein, our study aimed to evaluate the application of the renewable source kenaf cellulose nanofiber (KCNF) impregnated with temephos for the control of Aedes aegypti mosquito larvae. The morphology of KCNF+T was examined using field emission scanning electron microscope (FESEM) and transmission electron microscopy (TEM) while the quantity of temephos impregnated, released, and retained on the fibers upon dispersion in water were determined using high performance liquid chromatography (HPLC). Subsequently, the bioefficacy of the KCNF+T was evaluated against Ae. aegypti larvae. The FESEM and TEM micrograph verified the presence of temephos on the KCNF after the impregnation. HPLC analysis showed the amount of temephos impregnated on KCNF was 97 % of the 0.1 mg temephos. Upon dispersion in water, KCNF+T released 53% temephos and the retention of temephos on KCNF+T gradually decreased to 30, 17 and 7 % on the first, third and fifth month, respectively. The exposure of Ae. aegypti larvae to KCNF+T at concentration 0.006 to 0.01 mg/L was effective at 17 - 25 folds in killing Ae. aegypti larvae compared to temephos without KCNF. Microscopy examination revealed accumulation of the KCNF on the larval appendages. Overall, our study demonstrated that KCNF made from renewable source is an effective nanocarrier of temephos for the control of Ae. aegypti mosquito larvae.

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Sustained release insect repellent microcapsules using modified cellulose nanofibers (mCNF) as pickering emulsifier

Cited by 35 publications

References 52 publications

New Insights into the Formulation and Polymerization of Pickering Emulsions Stabilized by Natural Organic Particles

New Insights into the Formulation and Polymerization of Pickering Emulsions Stabilized by Natural Organic Particles

Larvicidal efficacy of temephos impregnated onto kenaf cellulose nanofibre to control Aedes aegypti (Diptera: Culicidae) larvae

Application of Renewable Kenaf Cellulose Nanofiber as a Temephos Nanocarrier for Control of Aedes Aegypti (Diptera: Culicidae) Larvae

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