caa a22 4500 606181431 CHVBK 20210128100811.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10876-014-0726-0 doi (NATIONALLICENCE)springer-10.1007/s10876-014-0726-0 Biosynthesis and Characterization of Gold Nanoparticles Using Zooglea ramigera and Assessment of Its Antibacterial Property [Elektronische Daten] [Nishant Srivastava, Mausumi Mukhopadhyay] In the present study, synthesis of gold nanoparticles with bacterium Zooglea ramigera was reported. The biosynthesized gold nanoparticles were spherical in shape of the size range of 4-16nm (by transmission electron microscopy). X-ray diffraction and specific area electron diffraction analysis revealed that the biosynthesized gold nanoparticles were in a face centered cubic (fcc) crystalline phase with the crystalline size of 19nm. It was observed that the size of gold nanoparticles was varied with the pH of the solution. The biosynthesized gold nanoparticles were investigated for its antibacterial activity. The minimum inhibition concentration and minimum bactericidal concentration methods were used for studying antibacterial property. Gold nanoparticles showed excellent antibacterial activity against Gram-positive Staphylococcus aureus, Streptococcus pyogenes and Gram-negative Pseudomonas aeruginosa, Escherichia coli bacterial pathogens. The gold nanoparticles showed anti-tuberculosis impact in investigation against Mycobacterium tuberculosis H37RV. A hypothesis for antibacterial action of gold nanoparticles was also explained. Springer Science+Business Media New York, 2014 Biosynthesis nationallicence Gold nanoparticles nationallicence MIC nationallicence Zooglea ramigera nationallicence Antibacterial nationallicence Srivastava Nishant Department of Chemical Engineering, Sardar Vallabhbhai National Institute of Technology, 395007, Surat, Gujarat, India aut Mukhopadhyay Mausumi Department of Chemical Engineering, Sardar Vallabhbhai National Institute of Technology, 395007, Surat, Gujarat, India aut Journal of Cluster Science Springer US; http://www.springer-ny.com 26/3(2015-05-01), 675-692 1040-7278 26:3<675 2015 26 10876 https://doi.org/10.1007/s10876-014-0726-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10876-014-0726-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Srivastava Nishant Department of Chemical Engineering, Sardar Vallabhbhai National Institute of Technology, 395007, Surat, Gujarat, India aut NATIONALLICENCE 700 1- Mukhopadhyay Mausumi Department of Chemical Engineering, Sardar Vallabhbhai National Institute of Technology, 395007, Surat, Gujarat, India aut NATIONALLICENCE 773 0- Journal of Cluster Science Springer US; http://www.springer-ny.com 26/3(2015-05-01), 675-692 1040-7278 26:3<675 2015 26 10876