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首页> 外文期刊>Materials Technology >Biosynthesis of silver nanoparticles using oriental medicinal herb Gynostemma pentaphyllum Makino extract and their antibacterial activity against aquatic pathogen
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Biosynthesis of silver nanoparticles using oriental medicinal herb Gynostemma pentaphyllum Makino extract and their antibacterial activity against aquatic pathogen

机译：东方草药绞股蓝提取物生物合成银纳米颗粒及其对水生病原菌的抗菌活性

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摘要

The most promising strategies to overcome bacterial drug resistance are the use of nanoparticles (NPs). In this paper, the extract of Gynostemma pentaphyllum Makino was prepared and used as reducing as well as stabilising agent to obtain silver NPs (AgNPs). The active phytochemicals present in the herb were responsible for the quick reduction in silver ion (Ag+) to metallic AgNPs (Ag-0). The method is green and rapid, and the whole synthesis process can be finished within 15 min at 60 degrees C. An intense surface plasmon resonance band in 420-450 nm range clearly revealed the formation of AgNPs. The obtained AgNPs were further characterised using X-ray diffraction, transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy and zeta potential. Moreover, the as prepared AgNPs have a superior antibacterial activity against four kinds of aquatic pathogenic bacteria, which shows great potential in aquaculture field.
机译：克服细菌耐药性的最有希望的策略是使用纳米颗粒（NPs）。本文制备了绞股蓝绞股蓝的提取物，并将其用作还原剂和稳定剂以获得银NPs（AgNPs）。草药中存在的活性植物化学物质将银离子（Ag +）快速还原为金属AgNPs（Ag-0）。该方法绿色且快速，并且整个合成过程可以在60摄氏度下在15分钟内完成。420-450nm范围内的强烈表面等离子体共振带清楚地表明了AgNP的形成。使用X射线衍射，透射电子显微镜（TEM），傅里叶变换红外（FTIR）光谱和Zeta电位进一步表征获得的AgNPs。而且，所制备的AgNP具有对四种水生病原细菌的优异的抗菌活性，在水产养殖领域显示出巨大的潜力。

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