Suresh Gopal, Gunasekar Poosali Hariharan, Kokila Dhanasegaran, Prabhu Durai, Dinesh Devadoss, Ravichandran Nagaiya, Ramesh Balasubramanian, Koodalingam Arunagirinathan, Vijaiyan Siva Ganesan
Department of Microbiology, Sri Sankara Arts & Science College, Enathur, Kanchipuram 631 561, Tamilnadu, India.
Department of Microbiology, Sri Sankara Arts & Science College, Enathur, Kanchipuram 631 561, Tamilnadu, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Jun 5;127:61-6. doi: 10.1016/j.saa.2014.02.030. Epub 2014 Feb 22.
Green synthesis of silver nanoparticles (AgNPs) using aqueous root extract of Delphinium denudatum (Dd) by reduction of Ag(+) ions from silver nitrate solution has been investigated. The synthesized DdAgNPs were characterized by using UV-Vis spectroscopy, X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM) and Fourier transform infrared spectroscopy (FTIR). The prepared DdAgNPs showed maximum absorbance at 416nm and particles were polydispersed in nature, spherical in shape and the size of the particle obtained was⩽85nm. The DdAgNPs exhibited antibacterial activity against Staphylococcus aureus ATCC 6538, Bacillus cereus NCIM 2106, Escherichia coli ATCC 8739 and Pseudomonas aeruginosa ATCC 9027. The DdAgNPs showed potent larvicidal activity against second instar larvae of dengue vector Aedes aegypti with a LC50 value of 9.6ppm.
研究了利用翠雀（Dd）的水生根提取物通过还原硝酸银溶液中的Ag(+)离子来绿色合成银纳米颗粒（AgNPs）。通过紫外可见光谱、X射线衍射（XRD）、场发射扫描电子显微镜（FESEM）和傅里叶变换红外光谱（FTIR）对合成的DdAgNPs进行了表征。制备的DdAgNPs在416nm处显示出最大吸光度，颗粒在性质上是多分散的，呈球形，获得的颗粒尺寸⩽85nm。DdAgNPs对金黄色葡萄球菌ATCC 6538、蜡样芽孢杆菌NCIM 2106、大肠杆菌ATCC 8739和铜绿假单胞菌ATCC 9027表现出抗菌活性。DdAgNPs对登革热媒介埃及伊蚊的二龄幼虫表现出强大的杀幼虫活性，LC50值为9.6ppm。
