Preparation and characterization of neem oil nanoemulsion formulations against Sitophilus oryzae and Tribolium castaneum adults
This study aimed to improve the efficacy of azadirachtin (Azadirachta indica. A. Juss) against two serious pest species of stored products, Sitophilus oryzae (L.) and Tribolium castaneum (Herbst), through nano-emulsion formulations. Pseudoternary phase diagrams were constructed consisting of an emul...
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| Format: | Article |
| Language: | English |
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Pesticide Science Society of Japan
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/62826/ http://psasir.upm.edu.my/id/eprint/62826/1/Preparation%20and%20characterization%20of%20neem%20oil%20.pdf |
| _version_ | 1848854674284740608 |
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| author | Choupanian, Marziyeh Omar, Dzolkifli Basri, Mahiran Asib, Norhayu |
| author_facet | Choupanian, Marziyeh Omar, Dzolkifli Basri, Mahiran Asib, Norhayu |
| author_sort | Choupanian, Marziyeh |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This study aimed to improve the efficacy of azadirachtin (Azadirachta indica. A. Juss) against two serious pest species of stored products, Sitophilus oryzae (L.) and Tribolium castaneum (Herbst), through nano-emulsion formulations. Pseudoternary phase diagrams were constructed consisting of an emulsion system of an active ingredient (neem oil), surfactant (polysorbate or alkylpolyglucoside), and water. Isotropic regions were formed in the pseudoternary phase diagrams, and four formulations were selected from the isotropic regions and characterized according to particle size, particle aging, zeta potential, stability and thermostability, surface tension, viscosity, and pH. The selected formulations showed particle sizes of 208–507 nm in diameter. The result of contact toxicity demonstrated excellent mortality of S. oryzae and T. castaneum adults, with a mortality range of 85–100% and 74–100%, respectively, at a 1% azadirachtin concentration after only 2 days of exposure. Compared to non-formulated neem oil, the nano-emulsion formulations significantly increased the mortality of the tested species. |
| first_indexed | 2025-11-15T11:13:37Z |
| format | Article |
| id | upm-62826 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:13:37Z |
| publishDate | 2017 |
| publisher | Pesticide Science Society of Japan |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-628262022-11-10T03:56:37Z http://psasir.upm.edu.my/id/eprint/62826/ Preparation and characterization of neem oil nanoemulsion formulations against Sitophilus oryzae and Tribolium castaneum adults Choupanian, Marziyeh Omar, Dzolkifli Basri, Mahiran Asib, Norhayu This study aimed to improve the efficacy of azadirachtin (Azadirachta indica. A. Juss) against two serious pest species of stored products, Sitophilus oryzae (L.) and Tribolium castaneum (Herbst), through nano-emulsion formulations. Pseudoternary phase diagrams were constructed consisting of an emulsion system of an active ingredient (neem oil), surfactant (polysorbate or alkylpolyglucoside), and water. Isotropic regions were formed in the pseudoternary phase diagrams, and four formulations were selected from the isotropic regions and characterized according to particle size, particle aging, zeta potential, stability and thermostability, surface tension, viscosity, and pH. The selected formulations showed particle sizes of 208–507 nm in diameter. The result of contact toxicity demonstrated excellent mortality of S. oryzae and T. castaneum adults, with a mortality range of 85–100% and 74–100%, respectively, at a 1% azadirachtin concentration after only 2 days of exposure. Compared to non-formulated neem oil, the nano-emulsion formulations significantly increased the mortality of the tested species. Pesticide Science Society of Japan 2017-11 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/62826/1/Preparation%20and%20characterization%20of%20neem%20oil%20.pdf Choupanian, Marziyeh and Omar, Dzolkifli and Basri, Mahiran and Asib, Norhayu (2017) Preparation and characterization of neem oil nanoemulsion formulations against Sitophilus oryzae and Tribolium castaneum adults. Journal of Pesticide Science, 42 (4). pp. 158-165. ISSN 1348-589X; ESSN: 1349-0923 https://www.jstage.jst.go.jp/article/jpestics/42/4/42_D17-032/_pdf/-char/en 10.1584/jpestics.D17-032 |
| spellingShingle | Choupanian, Marziyeh Omar, Dzolkifli Basri, Mahiran Asib, Norhayu Preparation and characterization of neem oil nanoemulsion formulations against Sitophilus oryzae and Tribolium castaneum adults |
| title | Preparation and characterization of neem oil nanoemulsion formulations against Sitophilus oryzae and Tribolium castaneum adults |
| title_full | Preparation and characterization of neem oil nanoemulsion formulations against Sitophilus oryzae and Tribolium castaneum adults |
| title_fullStr | Preparation and characterization of neem oil nanoemulsion formulations against Sitophilus oryzae and Tribolium castaneum adults |
| title_full_unstemmed | Preparation and characterization of neem oil nanoemulsion formulations against Sitophilus oryzae and Tribolium castaneum adults |
| title_short | Preparation and characterization of neem oil nanoemulsion formulations against Sitophilus oryzae and Tribolium castaneum adults |
| title_sort | preparation and characterization of neem oil nanoemulsion formulations against sitophilus oryzae and tribolium castaneum adults |
| url | http://psasir.upm.edu.my/id/eprint/62826/ http://psasir.upm.edu.my/id/eprint/62826/ http://psasir.upm.edu.my/id/eprint/62826/ http://psasir.upm.edu.my/id/eprint/62826/1/Preparation%20and%20characterization%20of%20neem%20oil%20.pdf |