Evaluation of the Stability of a 1,8-Cineole Nanoemulsion and Its Fumigant Toxicity Effect against the Pests <i>Tetranychus urticae, Rhopalosiphum maidis</i> and <i>Bemisia tabaci</i>
Pest control is a main concern in agriculture. Indiscriminate application of synthetic pesticides has caused negative impacts leading to the rapid development of resistance in arthropod pests. Plant secondary metabolites have been proposed as a safer alternative to conventional pesticides. Monoterpe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/14/7/663 |
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| author | Rocío Ayllón-Gutiérrez Eduardo Alberto López-Maldonado Mariana Macías-Alonso Joaquín González Marrero Laura Díaz-Rubio Iván Córdova-Guerrero |
| author_facet | Rocío Ayllón-Gutiérrez Eduardo Alberto López-Maldonado Mariana Macías-Alonso Joaquín González Marrero Laura Díaz-Rubio Iván Córdova-Guerrero |
| author_sort | Rocío Ayllón-Gutiérrez |
| collection | DOAJ |
| description | Pest control is a main concern in agriculture. Indiscriminate application of synthetic pesticides has caused negative impacts leading to the rapid development of resistance in arthropod pests. Plant secondary metabolites have been proposed as a safer alternative to conventional pesticides. Monoterpenoids have reported bioactivities against important pests; however, due to their high volatility, low water solubility and chemical instability, the application of these compounds has been limited. Nanosystems represent a potential vehicle for the broad application of monoterpenoids. In this study, an 1,8-cineole nanoemulsion was prepared by the low energy method of phase inversion, characterization of droplet size distribution and polydispersity index (PDI) was carried out by dynamic light scattering and stability was evaluated by centrifugation and Turbiscan analysis. Fumigant bioactivity was evaluated against <i>Tetranychus urticae</i>, <i>Rhopalosiphum maidis</i> and <i>Bemisia tabaci</i>. A nanoemulsion with oil:surfactant:water ratio of 0.5:1:8.5 had a droplet size of 14.7 nm and PDI of 0.178. Formulation was stable after centrifugation and the Turbiscan analysis showed no particle migration and a delta backscattering of ±1%. Nanoemulsion exhibited around 50% more bioactivity as a fumigant on arthropods when compared to free monoterpenoid. These results suggest that nanoformulations can provide volatile compounds of protection against volatilization, improving their bioactivity. |
| first_indexed | 2024-03-11T00:58:40Z |
| format | Article |
| id | doaj.art-61b8fb53fc334f66a1b3e63ef8a81feb |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-11T00:58:40Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-61b8fb53fc334f66a1b3e63ef8a81feb2023-11-18T19:49:45ZengMDPI AGInsects2075-44502023-07-0114766310.3390/insects14070663Evaluation of the Stability of a 1,8-Cineole Nanoemulsion and Its Fumigant Toxicity Effect against the Pests <i>Tetranychus urticae, Rhopalosiphum maidis</i> and <i>Bemisia tabaci</i>Rocío Ayllón-Gutiérrez0Eduardo Alberto López-Maldonado1Mariana Macías-Alonso2Joaquín González Marrero3Laura Díaz-Rubio4Iván Córdova-Guerrero5Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Tijuana 22390, MexicoFacultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Tijuana 22390, MexicoInstituto Politécnico Nacional, Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato, Av. Mineral de Valenciana 200 Col. Fracc. Industrial Puerto Interior, Silao 36275, MexicoInstituto Politécnico Nacional, Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato, Av. Mineral de Valenciana 200 Col. Fracc. Industrial Puerto Interior, Silao 36275, MexicoFacultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Tijuana 22390, MexicoFacultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Tijuana 22390, MexicoPest control is a main concern in agriculture. Indiscriminate application of synthetic pesticides has caused negative impacts leading to the rapid development of resistance in arthropod pests. Plant secondary metabolites have been proposed as a safer alternative to conventional pesticides. Monoterpenoids have reported bioactivities against important pests; however, due to their high volatility, low water solubility and chemical instability, the application of these compounds has been limited. Nanosystems represent a potential vehicle for the broad application of monoterpenoids. In this study, an 1,8-cineole nanoemulsion was prepared by the low energy method of phase inversion, characterization of droplet size distribution and polydispersity index (PDI) was carried out by dynamic light scattering and stability was evaluated by centrifugation and Turbiscan analysis. Fumigant bioactivity was evaluated against <i>Tetranychus urticae</i>, <i>Rhopalosiphum maidis</i> and <i>Bemisia tabaci</i>. A nanoemulsion with oil:surfactant:water ratio of 0.5:1:8.5 had a droplet size of 14.7 nm and PDI of 0.178. Formulation was stable after centrifugation and the Turbiscan analysis showed no particle migration and a delta backscattering of ±1%. Nanoemulsion exhibited around 50% more bioactivity as a fumigant on arthropods when compared to free monoterpenoid. These results suggest that nanoformulations can provide volatile compounds of protection against volatilization, improving their bioactivity.https://www.mdpi.com/2075-4450/14/7/6631,8-cineole1,3,3-trimethyl-2-oxabicyclo[2.2.2]octaneeucalyptolnanoemulsioncrop pestsessential oils |
| spellingShingle | Rocío Ayllón-Gutiérrez Eduardo Alberto López-Maldonado Mariana Macías-Alonso Joaquín González Marrero Laura Díaz-Rubio Iván Córdova-Guerrero Evaluation of the Stability of a 1,8-Cineole Nanoemulsion and Its Fumigant Toxicity Effect against the Pests <i>Tetranychus urticae, Rhopalosiphum maidis</i> and <i>Bemisia tabaci</i> Insects 1,8-cineole 1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane eucalyptol nanoemulsion crop pests essential oils |
| title | Evaluation of the Stability of a 1,8-Cineole Nanoemulsion and Its Fumigant Toxicity Effect against the Pests <i>Tetranychus urticae, Rhopalosiphum maidis</i> and <i>Bemisia tabaci</i> |
| title_full | Evaluation of the Stability of a 1,8-Cineole Nanoemulsion and Its Fumigant Toxicity Effect against the Pests <i>Tetranychus urticae, Rhopalosiphum maidis</i> and <i>Bemisia tabaci</i> |
| title_fullStr | Evaluation of the Stability of a 1,8-Cineole Nanoemulsion and Its Fumigant Toxicity Effect against the Pests <i>Tetranychus urticae, Rhopalosiphum maidis</i> and <i>Bemisia tabaci</i> |
| title_full_unstemmed | Evaluation of the Stability of a 1,8-Cineole Nanoemulsion and Its Fumigant Toxicity Effect against the Pests <i>Tetranychus urticae, Rhopalosiphum maidis</i> and <i>Bemisia tabaci</i> |
| title_short | Evaluation of the Stability of a 1,8-Cineole Nanoemulsion and Its Fumigant Toxicity Effect against the Pests <i>Tetranychus urticae, Rhopalosiphum maidis</i> and <i>Bemisia tabaci</i> |
| title_sort | evaluation of the stability of a 1 8 cineole nanoemulsion and its fumigant toxicity effect against the pests i tetranychus urticae rhopalosiphum maidis i and i bemisia tabaci i |
| topic | 1,8-cineole 1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane eucalyptol nanoemulsion crop pests essential oils |
| url | https://www.mdpi.com/2075-4450/14/7/663 |
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