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Comparative Study of Biological (Phoenix loureiroi Fruit) and Chemical Synthesis of Chitosan‑Encapsulated Zinc Oxide Nanoparticles and their Biological Properties

机译:壳聚糖包封的氧化锌纳米粒子的生物(凤凰果)与化学合成的比较研究及其生物学特性

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In the present study, the effect of in vitro antioxidant and cytotoxic properties was investigated in the biologically and chemicallysynthesized zinc oxide (ZnO)- and chitosan (CTS)-encapsulated ZnO (ZnO–CTS) nanoparticles. The nanoparticles werebiologically synthesized using Phoenix loureiroi fruit and characterized using Fourier transform infrared, X-ray diffraction,scanning electron microscopy, field emission scanning transmission electron microscopy, energy-dispersive X-ray spectroscopyand ultra violet-diffuse reflectance spectroscopy. The biologically synthesized ZnO–CTS nanoparticles (B-ZnO–CTS)results revealed good chemical structure (H–N–H, O–H, C=O, Zn and O groups), crystalline size (18 nm), morphology(spherical), elemental composition (Zn = 61.10%; O = 25.86%; C = 13.04%) and optical properties (λ = 374 nm; Eg = 3.18 eV).The B-ZnO–CTS also exhibited higher DPPH· (IC_(50) = 419.32 μg/mL), ABTS~(·+ )(45.61%), nitric oxide (21.28%), hydroxylradical (77.10%) scavenging activities and superoxide anion radical production (27.89%). The cytotoxicity of B-ZnO–CTSrevealed less hemolytic property (2.17%) and inhibited the Caco-2 cancerous cell viability (IC50 = 70.45 μg/mL). In conclusion,biological synthesis presents better prospects in pharmacotherapeutic applications in nano-herbal drug delivery.
机译:在本研究中,在生物和化学合成的氧化锌(ZnO)和壳聚糖(CTS)封装的ZnO(ZnO–CTS)纳米粒子中,研究了体外抗氧化剂和细胞毒性特性的影响。该纳米颗粒是用凤凰果果实生物合成的,并通过傅里叶变换红外光谱,X射线衍射,扫描电子显微镜,场发射扫描透射电子显微镜,能量色散X射线光谱和紫外-漫反射光谱进行了表征。生物合成的ZnO–CTS纳米粒子(B-ZnO–CTS)结果显示良好的化学结构(H–N–H,OH–,C = O,Zn和O基团),晶体尺寸(18 nm),形态(球形) ),元素组成(Zn = 61.10%; O = 25.86%; C = 13.04%)和光学性能(λ= 374 nm; Eg = 3.18 eV)。B-ZnO–CTS还表现出更高的DPPH·(IC_(50 )= 419.32μg/ mL),ABTS〜(·+)(45.61%),一氧化氮(21.28%),羟基自由基(77.10%)的清除活性和超氧阴离子自由基的产生(27.89%)。 B-ZnO–CTS的细胞毒性显示出较少的溶血特性(2.17%),并抑制了Caco-2癌细胞的生存能力(IC50 = 70.45μg/ mL)。总之,生物合成在纳米草药药物递送的药物治疗应用中具有更好的前景。

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