Loading...
Please wait, while we are loading the content...
Similar Documents
Biosynthesis of silver nano particles using marine brown alga Lobophora variegata and assessment of its bactericidal activity
| Content Provider | Semantic Scholar |
|---|---|
| Author | Thennarasan, Sathyaseelan Murugesan |
| Copyright Year | 2014 |
| Abstract | The biosynthesis of silver nano particles are an eco-friendly method in the field of nanotechnology. In the present study, the brown marine alga Lobophora variegata aqueous extract was used as a reducing agent for the synthesis silver particles (Ag-NPs), which has economic benefits over chemical and physical processes of synthesis. The synthesized nano particles have been characterized systematically by using UV–Vis spectroscopy, FTIR, TEM and XRD. The formation of Ag-NPs was confirmed through the presence of an intense absorption peak at 420 nm using a UV–visible spectrophotometer. A TEM image showed that the particles are spherical in shape with size ranging from 20 to 50 nm. The nano particles were crystalline in nature. This was confirmed by the XRD pattern. From the FT-IR results, it can be seen that the reduction has mostly been carried out by sulphated polysaccharides present in Lobophora variegata. Further, these biosynthesized silver nano particles were found to be highly toxic against gram positive bacteria Bacillus cereus, gram negative bacteria Salmonella typhii was analyzed by a zone of inhibition method. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://irphouse.com/ijnn/ijnnv5n1_05.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |