Synthesis and characterization of metallic nanoparticles impregnated onto activated carbon using leaf extract of Mukia maderasapatna: Evaluation of antimicrobial activities.

In the present research, in vitro antimicrobial activity of metallic nanoparticles impregnated on activated carbon (MNPI-AC) was investigated. Activated carbon (AC) was successfully prepared from Fishtail palm Caryota urens seeds by using two surface modification process (i) sulphuric acid treated Caryota urens seeds (SMCUS) (ii) ultrasonic assisted Caryota urens seeds (UACUS). Mukia maderasapatna plant extract was used as reducing agent for the synthesis of metallic nanoparticles. The characterization studies of MNPI - AC were performed by using a UV-visible spectrophotometer and Fourier Transform Infrared Spectroscopic (FT-IR) analyses. Different active functional groups were identified by FTIR studies which were responsible for impregnation of metallic nanoparticles on a surface of AC. The antimicrobial activity of MNPI - AC was examined against four bacterial strains: 2 g positive (Staphylococcus aureus and Staphylococcus epidermidis) and 2 g negative (Pseudomonas aeruginosa and Escherichia coli) and one fungal strain (Candida albicans). Among different MNPs, Pb-AC (UACUS) shows that higher zone of inhibition. These results in the literature showed that MNPI - AC are to be effective for deactivation and inactivation of microbes in an efficient manner.