Antimicrobial activities of silver nanoparticles bio-synthesized from diatom Amphora sp.

• Main Authors: Tevan, Ramanathan, Govindaraju, M, Jayakumar, Saravanan, Govindan, Natanamurugaraj, Abd Rahim, Mohd Hasbi, Maniam, Gaanty Pragas, Ichwan, Solachuddin J. A.
• Format: Article
• Language: English
• Published: RMP Publications 2017
• Subjects: RS Pharmacy and materia medica
• Online Access: http://irep.iium.edu.my/66686/1/Tevan%20PhD%20Publication%202.pdf; http://irep.iium.edu.my/66686/; https://www.jesrjournal.com/

A biological method was employed to synthesize silver nanoparticles through marine diatom Amphora sp. Antimicrobial efficacy test against different pathogenic bacteria were performed through synthesized silver nanoparticles. The physio-chemical properties of synthesized silver nanoparticles were studied using analytical techniques such as UV-Vis spectrophotometer, Field Emission Scanning Electron Microscopy (FESEM), Energy- Dispersive X-ray Spectroscopy (EDX) and Fourier Transform Infrared Spectroscopy (FTIR) and X-ray Powder Diffraction (XRD). UV-Vis color intensity study and higher magnification of the Field Emission Scanning Electron Microscopy image showed the synthesized silver nanoparticles were rod shaped with a size range from 42 nm to 46 nm. The synthesized nanoparticles exhibited antibacterial activities in varying magnitudes. About 10 mg/ml of silver nanoparticles were able to inhibit the growth of gram-negative bacteria while gram-positive bacteria were resistant towards similar concentrations of silver nanoparticles.