Field efficacy of palm oil-based nanoemulsion insecticides against Aedes aegypti in Malaysia
This study evaluates the efficacy of palm oil-based nanoemulsion insecticides in thermal fogging applications against adult Ae. aegypti. The nanoemulsion formulations contained a palm oil methyl ester solvent, water, a non-ionic surfactant, and active ingredient deltamethrin, with nanoemulsion dropl...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021
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| Online Access: | http://psasir.upm.edu.my/id/eprint/97332/ http://psasir.upm.edu.my/id/eprint/97332/1/ABSTRACT.pdf |
| _version_ | 1848862573543292928 |
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| author | Shaari, Aznizan Yunus, Robiah Ab.Raman, Ismail Omar, Dzolkhifli Shahar, Mohd Khadri Awang Biak, Dayang Radiah Kania, Dina Aulia, Akmal |
| author_facet | Shaari, Aznizan Yunus, Robiah Ab.Raman, Ismail Omar, Dzolkhifli Shahar, Mohd Khadri Awang Biak, Dayang Radiah Kania, Dina Aulia, Akmal |
| author_sort | Shaari, Aznizan |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This study evaluates the efficacy of palm oil-based nanoemulsion insecticides in thermal fogging applications against adult Ae. aegypti. The nanoemulsion formulations contained a palm oil methyl ester solvent, water, a non-ionic surfactant, and active ingredient deltamethrin, with nanoemulsion droplet diameters ranging from 362 to 382 nm. Knockdown and mortality rates of caged mosquitoes were measured at various distances up to 18 m from the spray nozzle. After 15 min of insecticide exposure, nanoemulsion insecticides achieved a knockdown rate of >97% at a spraying distance of 4 m, and the knockdown effect increased substantially with exposure time. At an 18 m spraying distance, the best nanoemulsion formulation, NanoEW8, achieved a high mosquito mortality rate of more than 80%, whereas the non-nanoemulsion and the commercial product reached only 14 and 8 m distances, respectively, for comparable mortality. The artificial neural network (ANN) was used to predict the mosquito knockdown distribution over the spraying distances and time intervals. The models predicted that NanoEW8 can still cause knockdown at a maximum distance of 61.5 m from the discharge point 60 min after spraying. The results established that Ae. aegypti was susceptible to the newly developed palm oil-based nanoemulsion insecticide, indicating a high potential for mosquito control. |
| first_indexed | 2025-11-15T13:19:10Z |
| format | Article |
| id | upm-97332 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T13:19:10Z |
| publishDate | 2021 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-973322022-09-06T08:46:26Z http://psasir.upm.edu.my/id/eprint/97332/ Field efficacy of palm oil-based nanoemulsion insecticides against Aedes aegypti in Malaysia Shaari, Aznizan Yunus, Robiah Ab.Raman, Ismail Omar, Dzolkhifli Shahar, Mohd Khadri Awang Biak, Dayang Radiah Kania, Dina Aulia, Akmal This study evaluates the efficacy of palm oil-based nanoemulsion insecticides in thermal fogging applications against adult Ae. aegypti. The nanoemulsion formulations contained a palm oil methyl ester solvent, water, a non-ionic surfactant, and active ingredient deltamethrin, with nanoemulsion droplet diameters ranging from 362 to 382 nm. Knockdown and mortality rates of caged mosquitoes were measured at various distances up to 18 m from the spray nozzle. After 15 min of insecticide exposure, nanoemulsion insecticides achieved a knockdown rate of >97% at a spraying distance of 4 m, and the knockdown effect increased substantially with exposure time. At an 18 m spraying distance, the best nanoemulsion formulation, NanoEW8, achieved a high mosquito mortality rate of more than 80%, whereas the non-nanoemulsion and the commercial product reached only 14 and 8 m distances, respectively, for comparable mortality. The artificial neural network (ANN) was used to predict the mosquito knockdown distribution over the spraying distances and time intervals. The models predicted that NanoEW8 can still cause knockdown at a maximum distance of 61.5 m from the discharge point 60 min after spraying. The results established that Ae. aegypti was susceptible to the newly developed palm oil-based nanoemulsion insecticide, indicating a high potential for mosquito control. Elsevier 2021 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/97332/1/ABSTRACT.pdf Shaari, Aznizan and Yunus, Robiah and Ab.Raman, Ismail and Omar, Dzolkhifli and Shahar, Mohd Khadri and Awang Biak, Dayang Radiah and Kania, Dina and Aulia, Akmal (2021) Field efficacy of palm oil-based nanoemulsion insecticides against Aedes aegypti in Malaysia. Acta Tropica, 224. art. no. 106107. pp. 1-12. ISSN 0001-706X; ESSN: 1873-6254 https://www.sciencedirect.com/science/article/pii/S0001706X21002862 10.1016/j.actatropica.2021.106107 |
| spellingShingle | Shaari, Aznizan Yunus, Robiah Ab.Raman, Ismail Omar, Dzolkhifli Shahar, Mohd Khadri Awang Biak, Dayang Radiah Kania, Dina Aulia, Akmal Field efficacy of palm oil-based nanoemulsion insecticides against Aedes aegypti in Malaysia |
| title | Field efficacy of palm oil-based nanoemulsion insecticides against Aedes aegypti in Malaysia |
| title_full | Field efficacy of palm oil-based nanoemulsion insecticides against Aedes aegypti in Malaysia |
| title_fullStr | Field efficacy of palm oil-based nanoemulsion insecticides against Aedes aegypti in Malaysia |
| title_full_unstemmed | Field efficacy of palm oil-based nanoemulsion insecticides against Aedes aegypti in Malaysia |
| title_short | Field efficacy of palm oil-based nanoemulsion insecticides against Aedes aegypti in Malaysia |
| title_sort | field efficacy of palm oil-based nanoemulsion insecticides against aedes aegypti in malaysia |
| url | http://psasir.upm.edu.my/id/eprint/97332/ http://psasir.upm.edu.my/id/eprint/97332/ http://psasir.upm.edu.my/id/eprint/97332/ http://psasir.upm.edu.my/id/eprint/97332/1/ABSTRACT.pdf |