BIOLOGICALLY SYNTHESIZED SILVER NANOPARTICLES OF CURCUMA CAESIA ROXB. RHIZOME EXTRACT AND EVALUATION OF THEIR ANTIBACTERIAL ACTIVITY AGAINST MDR BACTERIA

Multidrug-resistant (MDR) bacterial infection is severe health concerns in the field of medicine. The researcher used green synthesized silver nanoparticles to overcome from MDR bacterial infection. Present study revealed successful synthesis of nanoparticles from Curcuma caesia aqueous rhizome extract by use of silver metal as a capping agent. Synthesized silver nanoparticles were identified by various methods like UV-Vis spectroscopy, Transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and Scanning electron microscope (SEM). Silver nanoparticles having an average size of 31.92 ± 2.8 nm by TEM. The synthesized silver nanoparticles were discovered as an effective source of nanomedicine against MDR strains of Klebsiella pneumonia, Escherichia coli, and Pseudomonas aeruginosa. The antibacterial activity of nanoparticles measured in the range from 11.4 ± 0.83 mm to 17.73 ± 0.91 mm. The highest zone of inhibition was reported against Pseudomonas aeruginosa i.e., 17.73 ± 0.91 mm at a concentration of 30 μg/μl. Silver nanoparticles showed increased total phenolic and total flavonoid content, additionally with higher DPPH activity as compared to the aqueous rhizome extract. Present results support the green synthesis of nanoparticles that have promising advantages as antimicrobial activity against MDR and better antioxidant activity compare to aqueous extract.