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Insecticidal Effect of Green Bimetallic Nanoparticles from Crotalaria longirostrata on Cotton Mealybug,Phenacoccus solenopsis

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Journal of Renewable Materials 2022年第10期10卷 2543-2552页

作者： Vianey Mendez-Trujillo Benjamín Valdez-Salas Mario Curiel-Alvarez Ernesto Beltran-Partida Arnoldo Alfaro-Corres EsaúRuiz-Sanchez Gerardo Bautista-Trujillo Olivia Tzintzun Camacho Onecimo Grimaldo-Juarez Carlos Ceceña-Duran Carlos Ail-Catzin Daniel González-Mendoza Facultad de Medicina de la Universidad Autónoma de Baja California Dr.Humberto Torres Sanginés S/NCentro CívicoMexicaliBaja CaliforniaMéxico Instituto de Ingeniería de la Universidad Autónoma de Baja California Calle de la Normal S/N y Boulevard Benito JuárezMexicaliBaja CaliforniaMéxico Instituto Tecnológico de Conkal División de Estudios de Posgrado e InvestigaciónAntigua Carretera Mérida-MotulConkalYucatánMéxico Facultad de Medicina Veterinaria y Zootecnia de la Universidad Autónoma de Chiapas ChiapasMéxico Universidad Autónoma de Baja California Instituto de Ciencias AgrícolasBaja CaliforniaMéxico

The present study was conducted to evaluate the impact of bimetallic nanoparticles(NPs)of copper(Cu)and zinc(Zn)from Crotalaria longirostrata on the insect mortality and cell viability of Phenacoccus solenopsis.The biosynthesis of bimetallic nanoparticles(Cu/Zn-NPs)from C.longirostrata was confirmed by the presence of a single peak around 378 nm.The hydrodynamic diameter of the Cu/Zn nanoparticles varied from 59 to 119 nm and their zeta potential was found to be−30.90 mV.The EDX analysis showed a strong signal for Cu and Zn(8 and 8.6 keV,respectively).The Cu/Zn-NPs showed an effective insecticide activity against P.solenopsis with 63%of insect mortality after 96 h treatment.However,further studies about nanotoxicity of Cu/Zn-NPs from C.longirostra are needed to reveal the exact mechanism of nanoparticles toxicity in insects.

关键词： phytonanoparticles chipilin biocontrol agronanotechnology

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Insecticidal Activity and Physicochemical Characterization of Nanoparticles from Foliar Extract of Capsicum chinense

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Journal of Renewable Materials 2023年第11期11卷 3933-3943页

作者： Arnoldo E.Alfaro-Corres Daniel Gonzalez-Mendoza Esau Ruiz-Sanchez Carlos Ail-Catzin Benjamin Valdez-Salas Federico Gutierrez-Miceli Arturo Reyes-Ramirez Jacques Fils Pierre Division of Postgraduate Studies and Research Tecnologico Nacional de MéxicoCampus ConkalConkalYucatán97345Mexico Institute of Agricultural Sciences Universidad Autonoma de Baja CaliforniaEjido Nuevo LeonMexicaliBaja California21705Mexico Instituto de Ingeniería Universidad Autónoma de Baja CaliforniaMexicaliBaja California21100Mexico Division of Postgraduate Studies and Research Tecnologico Nacional de MexicoCampus Tuxtla GutierrezTuxtla GutierrezChiapas29050Mexico

This work was carried out to evaluate the insecticidal effect of mono,bi and trimetallic nanoparticles(NPs)from leaf extract of habanero pepper(Capsicum chinense Jacq.)on the red flour beetle(Tribolium castaneum herbst.)and cotton mealybug(Phenacoccus solenopsis Tinsley).The results showed that Cu NPs,Cu/Mn NPs and Zn/Cu NPs had high insecticidal effect against T.castaneum(63%-80% mortality after 96 h).The Cu NPs and Zn/Cu NPs showed also insecticidal effect against P.solenopsis,but to a lesser extent(20%–28% after 96 h).With regards to the physicochemical characterization,Cu NPs had a zeta potential of 21.1 mV,whereas Cu/Mn NPs and Zn/Cu NPs exhibited zeta potentials of 200 mV.The polydispersity index(PDI)values for Cu NPs,Cu/Mn NPs,and Zn/Cu NPs were 10.1,29.16,and 14.34,respectively.The TF-IR spectra of the NPs varied from 600 to 4000 cm−1.The EDX weight percentages showed the presence of Cu(0.29%–2.4%),Mn(1.4%),and Zn(2.6%)in Cu/Mn NPs and Zn/Cu NPs,respectively.

关键词： phytonanoparticles botanical insecticide pest control agronanotechnology

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