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首页> 外文期刊>Nanobiotechnology, IET >Sunlight induced biosynthesis of silver nanoparticle from the bark extract of Amentotaxus assamica D.K. Ferguson and its antibacterial activity against Escherichia coli and Staphylococcus aureus
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Sunlight induced biosynthesis of silver nanoparticle from the bark extract of Amentotaxus assamica D.K. Ferguson and its antibacterial activity against Escherichia coli and Staphylococcus aureus

机译：阳光诱导的 assamica assamica D.K.树皮提取物生物合成银纳米颗粒。弗格森及其对大肠杆菌和金黄色葡萄球菌的抗菌活性

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摘要

Green synthesis of nanoparticles has gained importance due to its eco-friendly, low toxicity and cost effective nature. This study deals with the biosynthesis of silver nanoparticles (AgNPs) from the bark extract of Amentotaxus assamica. The AgNPs have been synthesised by reducing the silver ions into stable AgNPs using the bark extract of Amentotaxus assamica under the influence of sunlight irradiation. The characterisation of the biosynthesised AgNPs was carried out by UV vis spectroscopy, X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray analysis. The UV vis spectrum showed a broad peak at 472 nm. Also, the XRD confirmed the crystalline structure of the AgNPs. Moreover, the SEM analysis revealed that the biosynthesised AgNPs were spherical in shape. Also, dynamic light scattering techniques were used to evaluate the size distribution profile of the biosynthesised AgNPs. Furthermore, the biosynthesised AgNPs showed a prominent inhibitory effect against both Escherichia coli (MTCC 111) and Staphylococcus aureus (MTCC 97). Thus the biosynthesis of AgNPs from the bark extract of ArnenOtaxus assamica is found to eco-friendly way of producing AgNPs compared to chemical method.
机译：纳米粒子的绿色合成因其环保，低毒和具有成本效益的特性而变得越来越重要。这项研究处理了从阿米塔克线虫的树皮提取物中生物合成银纳米颗粒（AgNPs）。 AgNPs是通过在阳光照射的影响下，使用无花果阿曼茶的树皮提取物将银离子还原为稳定的AgNPs来合成的。通过紫外可见光谱，X射线衍射分析（XRD），傅立叶变换红外光谱，扫描电子显微镜（SEM）和能量色散X射线分析对生物合成的AgNP进行表征。 UV可见光谱在472nm处显示宽峰。另外，XRD证实了AgNP的晶体结构。此外，SEM分析表明，生物合成的AgNP是球形的。同样，动态光散射技术被用来评估生物合成的AgNPs的大小分布图。此外，生物合成的AgNP对大肠杆菌（MTCC 111）和金黄色葡萄球菌（MTCC 97）均显示出显着的抑制作用。因此，与化学方法相比，发现从ArnenOtaxus assamica的树皮提取物中生物合成AgNP是一种生态友好的生产AgNP的方式。

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  • 来源
    《Nanobiotechnology, IET》 |2019年第1期|18-22|共5页
  • 作者

    Bharali Pankaj; Das Subhankar; Bhandari Nikita; Das Arup K.; Kalta Mohan Chandra;

  • 作者单位

    Gauhati Univ, Dept Biotechnol, Gauhati 781014, Assam, India;

    Amity Univ, Dept Biotechnol, Sect 125, Noida 201301, UP, India;

    Amity Univ, Dept Biotechnol, Sect 125, Noida 201301, UP, India;

    Rajiv Gandhi Univ, Dept Bot, Rono Hills, Doimukh 791112, Arunachal Prade, India;

    Gauhati Univ, Dept Biotechnol, Gauhati 781014, Assam, India;

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