Investigation of Anti-bacterial Properties of Silver Nanoparticles Biosynthesized Using Extract of White Tea

Because of low cost and preservation of time, bio-synthesis is better than custom physical and chemical methods for synthesis of nanoparticles. Bio-synthesis of silver nanoparticles was performed using extract of white tea. Effect of three concentrations 1 mM, 2 mM, and 3 mM on synthesis was examined. UV-Vis, FT-IR, and TEM analysis were employed to verify synthesis of silver nanoparticles. UV-Vis spectrophotometry records a peak in 420 nm which confirms bio-synthesis of these nanoparticles in the extract of white tea. FT-IR analysis highlights role of functional groups in the extract of white tea on synthesis of silver nanoparticles. Spherical shape of synthesized silver nanoparticles is in average size of 40 nm which was determined by TEM analysis. Results reveal that these nanoparticles have anti-bacterial activity against Staphylococcus aureu and Escherichiacoli bacteria

Keywords:

Staphylococcus aureu , Escherichiacoli , White tea , UV-Vis , TEM