Vigneshwaran N, Nachane R P, Balasubramanya R H, Varadarajan P V
Nanotechnology Research Group, Central Institute for Research on Cotton Technology, Adenwala Road, Matunga, Mumbai 400 019, India.
Carbohydr Res. 2006 Sep 4;341(12):2012-8. doi: 10.1016/j.carres.2006.04.042. Epub 2006 May 22.
Stable silver nanoparticles have been synthesized by using soluble starch as both the reducing and stabilizing agents; this reaction was carried out in an autoclave at 15 psi, 121 degrees C for 5 min. Nanoparticles thus prepared are found to be stable in aqueous solution over a period of three months at room temperature (approximately 25 degrees C). The size of these nanoparticles was found to be in the range of 10-34 nm as analyzed using transmission electron micrographs. The X-ray diffraction analysis revealed the face-centred cubic (fcc) geometry of silver nanoparticles. Iodometric titration confirmed the entrapment of silver nanoparticles inside the helical amylose chain. These silver nanoparticles embedded in soluble starch produced a typical emission peak at 553 nm when excited at 380 nm. The use of environmentally benign and renewable materials like soluble starch offers numerous benefits of eco-friendliness and compatibility for pharmaceutical and biomedical applications.
通过使用可溶性淀粉作为还原剂和稳定剂合成了稳定的银纳米颗粒；该反应在高压釜中于15磅力/平方英寸、121摄氏度下进行5分钟。发现由此制备的纳米颗粒在室温（约25摄氏度）下在水溶液中三个月内保持稳定。使用透射电子显微镜分析发现这些纳米颗粒的尺寸在10 - 34纳米范围内。X射线衍射分析揭示了银纳米颗粒的面心立方（fcc）结构。碘量滴定法证实了银纳米颗粒被包裹在螺旋状直链淀粉链内。当在380纳米处激发时，这些嵌入可溶性淀粉中的银纳米颗粒在553纳米处产生典型的发射峰。使用像可溶性淀粉这样环境友好且可再生的材料为制药和生物医学应用提供了许多生态友好和兼容性方面的益处。
