Abstract:
The strains of violacein producing bacteria were isolated from different
environmental source, identified to be J. lividium. The butanolic crude extract of J. lividium
strain Isl containing crude violacein was used to cap the silver nanoparticles (AgNPs) by
modifying a green method using glucose and starch as reducing and capping agent
respectively. UV–Vis spectroscopy, Scanning Electron Microscopy (SEM) and Atomic Force
Microscopy (AFM) were used to certify that the smaller sized, well dispersed and good quality
of the violacein capped AgNPs was achieved. X-ray Diffraction (XRD) confirmed that starch
and violacein capped AgNPs have cubic face centered crystalline nature. The capping of
AgNPs with violacein and starch was confirmed through Fourier Transform Infrared (FTIR)
Spectroscopy. Stability testing showed that violacein capped AgNPs were stable over a longer
period of time and proved as better antibacterial, antifungal and anticancer agents, compared
to starch capped nanoparticles and violacein
