Structural characterization of chitosan nanoparticle loaded with Piper nigrum essential oil for biological efficacy against the stored grain pest control,Pesticide Biochemistry and Physiology

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Structural characterization of chitosan nanoparticle loaded with Piper nigrum essential oil for biological efficacy against the stored grain pest control
Pesticide Biochemistry and Physiology ( IF 4.2 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.pestbp.2020.104566
Vallavan Rajkumar ₁ , Chinappan Gunasekaran ₁ , Jayaraman Dharmaraj ₁ , Panneerselvam Chinnaraj ₁ , Cheruvathur Amita Paul ₁ , Inbaraj Kanithachristy ₂

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In this study, Piper nigrum essential oil (PNO) has been encapsulated in chitosan nanoparticle (CS NPs) via ionic gelation method with sodium tripolyphosphate (TPP). The successfully loaded Piper nigrum EO was confirmed by UV-Vis spectrophotometry and X-ray diffraction (XRD) techniques. The average particle size of P. nigrum essential oil loaded chitosan nanoparticle (CS/PNO NPs) showed 527.5 nm with spherical shape morphology. Zeta potential values of the particles were found to be negative -5.34 mV. Encapsulation efficiency and loading efficiency was in the range of 35% to 40% and 4.85% to 7.04% respectively. CS/PNO NPs exhibited strong insecticidal activity against Sitophilus oryzae and Tribolium castaneum. In addition, CS/PNO NPs enhanced the fumigant toxicity and altered the neurotransmitter, acetylcholine in both the stored grain pests. Overall results of nanoformulation indicated that these novel design systems could be promoted in integrated pest management schedule for T. castaneum and S. oryzae.

中文翻译：

装载黑胡椒精油的壳聚糖纳米颗粒的结构表征对储粮害虫防治的生物功效

在这项研究中，黑胡椒精油 (PNO) 通过离子凝胶法与三聚磷酸钠 (TPP) 封装在壳聚糖纳米颗粒 (CS NPs) 中。紫外可见分光光度法和 X 射线衍射 (XRD) 技术证实了成功加载的 Piper nigrum EO。P. nigrum 精油负载的壳聚糖纳米颗粒 (CS/PNO NPs) 的平均粒径显示为 527.5 nm，具有球形形态。发现粒子的 Zeta 电位值为负 -5.34 mV。包封效率和装载效率分别在35%至40%和4.85%至7.04%的范围内。CS/PNO NPs 对 Sitophilus oryzae 和 Tribolium castaneum 表现出很强的杀虫活性。此外，CS/PNO NPs 增强了熏蒸剂的毒性并改变了两种储粮害虫的神经递质乙酰胆碱。

更新日期：2020-06-01

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