Nanoparticles of zinc oxide (ZnO NPs) have been synthesised from naturally available Eggplant, Solanum melongena leaf extract. The methodology has been optimized to obtain ZnO NPs which as are characterized using UV-Visible, X-ray diffraction (XRD), Scanning Electron Microscope (SEM) and FT-Infra red (FTIR) tools to confirm their nano dimensions and chemical properties. The SPR band is obtained at 389 nm in UV-visible absorption spectrum confirmes the formation of ZnO NPs while the presence of -OH, -C-O, -CH₂ and –COO groups at vibrational frequencies of 3500, 105, 3000 and 1640 cm^-1, respectively are observed from FTIR. Further, the SEM images show regular flakes like structure, and the average distribution of the nanoparticle is found to be around 100 nm. The newly synthesised ZnO NPs using leaf extract of Solanum melongena show considerable activity against both Gram-negative and Gram-positive bacteria. The ZnO NPs is proved to be more potent against Staphylococcus aureus than E. coli.

中文翻译：

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利用绿色化学原理合成茄叶提取物氧化锌纳米粒子

氧化锌（ZnO NPs）的纳米颗粒是从天然茄子，茄子叶提取物中合成的。该方法已经过优化，可得到ZnO NP，并使用UV-可见，X射线衍射（XRD），扫描电子显微镜（SEM）和FT-红外（FTIR）工具对其进行表征，以确认其纳米尺寸和化学性质。紫外可见吸收光谱中在389 nm处获得的SPR谱带确认了ZnO NP的形成，同时在3500、105、3000和1640 cm振动频率下存在-OH，-CO，-CH ₂和-COO基团^{- 1个}分别从FTIR观察到。此外，SEM图像显示规则的薄片状结构，并且发现纳米颗粒的平均分布为约100nm。使用茄子叶提取物新合成的ZnO NPs对革兰氏阴性菌和革兰氏阳性菌均显示出相当大的活​​性。氧化锌纳米粒子被证明是对更有效的金黄色葡萄球菌比Ë。大肠杆菌。