Biogenic synthesis, characterization and antimicrobial activity of <ce:italic>Ixora brachypoda</ce:italic> (DC) leaf extract mediated silver nanoparticles

Meghashyama Bhat; Bidhayak Chakraborty; Raju Suresh Kumar; Abdulrahman I. Almansour; Natarajan Arumugam; D. Kotresha; S.S. Pallavi; S.B. Dhanyakumara; K.N. Shashiraj; Sreenivasa Nayaka

摘要

The present investigation was aimed at the evaluation of synthesis, characterization and antimicrobial activity ofIxora brachypodaDC. leaf extract mediated silver nanoparticles (AgNPs). The AgNPs were characterized by UV–Visible (UV–Vis) spectrophotometer, Fourier transform infrared spectroscopy (FTIR), Atomic force microscopy (AFM), Scanning electron microscopy (SEM) with Energy dispersive X-ray spectrometry (EDS), Transmission electron microscopy (TEM), Zeta potential and X-ray diffractometry (XRD). Finally, the antimicrobial activity of synthesized AgNPs was investigated against pathogenic microorganisms. The absorption peak, obtained at 423?nm in UV–Vis analysis, confirmed the synthesis of AgNPs and the presence of biological functional groups involved in the capping and stabilization were determined by FTIR analysis. The other characterizations revealed the details about the AgNPs as spherical, poly-dispersed and size ranging from 18 to 50?nm with an average diameter of 27.76?nm. The zeta potential was calculated to be ?30.4?mV and the typical Bragg’s planes in the metallic silver range indicated the confirmation of AgNPs formation. Thein-vitroanalysis confirmed the antimicrobial potential ofI. brachypodaleaf aqueous extract synthesized AgNPs, which effectively inhibited the growth of pathogens and it can be concluded that theI. brachypodaAgNPs can be used as broad-spectrum antimicrobials against multi-drug resistant microbial pathogens.

机译：本研究旨在评估血吸虫血管缺陷的合成，表征和抗微生物活性。叶提取物介导的银纳米颗粒（AgNP）。通过UV可见（UV-VI）分光光度计，傅里叶变换红外光谱（FTIR），原子力显微镜（AFM），扫描电子显微镜（SEM），透射电子显微镜（EDS），透射电子显微镜（EDS），透射电子显微镜（TEM），Zeta电位和X射线衍射法（XRD）。最后，对致病微生物进行了合成的agnps的抗微生物活性。在UV-VIS分析中在423℃下获得的吸收峰证实了AgNP的合成以及参与封端和稳定化的生物官能团的存在，通过FTIR分析确定。其他特征揭示了关于球形，聚分散的和尺寸为18至50μm的球形的细节，平均直径为27.76μm。计算Zeta电位是？30.4？MV，金属银距离的典型布拉格平面表明AgNPS形成的确认。 Thein-vitroanalysis证实了抗微生物潜力。 Brocapodaleaf areaf含水提取物合成AgNP，有效抑制病原体的生长，可以得出结论。 BroachypodaAgnps可用作抗多药物耐微生物病原体的广谱抗微生物剂。

Biogenic synthesis, characterization and antimicrobial activity of Ixora brachypoda (DC) leaf extract mediated silver nanoparticles

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