Evaluation of antibacterial activity of zinc oxide nanoparticles synthesized using phycobilins of Anabaena variabilisNTSS17

摘要

Objective:To evaluate the antibacterial activity of zinc oxide nanoparticles synthesized using phycobilins ofAnabaenavariabilis NTSS17. Methods:The cyanobacterial isolate was collected from paddy field and morphologically identified asAnabaenavariabilis NTSS17, that produces a pigmenti.e. phycobiliproteins. The biosynthesized zinc nanoparticles were characterized by different spectroscopic and analytical techniques such as UV-visible spectrophotometer, Fourier transform infrared spectroscopy and X-ray diffraction which confirmed the formation of zinc nanoparticles. Results: Antibacterial activity of zinc oxide nanoparticles was examined againstEscherichia coli,Rhodococcus rhodochrous andPseudomonas aeruginosa. The maximum zone of inhibition occurred at 5 mg/1 000 mL concentration of zinc oxide nanoparticles. Conclusions:Due to potent antimicrobial and intrinsic properties of zinc oxide, it can be actively used for biomedical applications.