Ayaz Ahmed Khan Behlol, Subramanian Swetha, Sivasubramanian Aravind, Veerappan Ganapathy, Veerappan Anbazhagan
Department of Chemistry, School of Chemical and Biotechnology, SASTRA University, Thanjavur, Tamil Nadu, India.
SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, Suwon, South Korea.
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Sep 15;130:54-8. doi: 10.1016/j.saa.2014.03.070. Epub 2014 Mar 31.
The current study deals with the synthesis of gold nanoparticles (AuNPs) using Salicornia brachiata (Sb) and evaluation of their antibacterial and catalytic activity. The SbAuNPs showed purple color with a characteristic surface plasmon resonance peak at 532 nm. Scanning electron microscopy and transmission electron microscopy revealed polydispersed AuNPs with the size range from 22 to 35 nm. Energy dispersive X-ray and thin layer X-ray diffraction analysis clearly shows that SbAuNPs was pure and crystalline in nature. As prepared gold nanoparticles was used as a catalyst for the sodium borohydride reduction of 4-nitro phenol to 4-amino phenol and methylene blue to leucomethylene blue. The green synthesized nanoparticles exhibited potent antibacterial activity against the pathogenic bacteria, as evidenced by their zone of inhibition. In addition, we showed that the SbAuNPs in combination with the regular antibiotic, ofloxacin, exhibit superior antibacterial activity than the individual.
本研究涉及利用翅碱蓬（Sb）合成金纳米颗粒（AuNPs）及其抗菌和催化活性评估。SbAuNPs呈现紫色，在532nm处有特征性表面等离子体共振峰。扫描电子显微镜和透射电子显微镜显示AuNPs多分散，尺寸范围为22至35nm。能量色散X射线和薄层X射线衍射分析清楚表明SbAuNPs本质上是纯净且结晶的。所制备的金纳米颗粒用作硼氢化钠将4-硝基苯酚还原为4-氨基苯酚以及将亚甲基蓝还原为无色亚甲基蓝的催化剂。绿色合成的纳米颗粒对病原菌表现出强效抗菌活性，抑菌圈证明了这一点。此外，我们表明SbAuNPs与常规抗生素氧氟沙星联合使用时，比单独使用表现出更优的抗菌活性。
