Characterizations and analysis of the antioxidant, antimicrobial, and dye reduction ability of green synthesized silver nanoparticles

Green Processing and Synthesis

Khan Muhammad Shafiq¹  Shah Muhammad Musaddiq¹  Bukhari Syed Ali Imran¹  Ahmad Bashir¹  Faheem Muhammad¹  Zahid Nafeesa²  Khan M. I.³  Ismail Muhammad³  Sareen Shweta⁴  Rafiq Aftab⁵  Mutreja Vishal⁶  Park Jeongwon⁶  Riaz Muhammad⁶  Jabbour Ghassan⁶ 

[1] Department of Biological Sciences, International Islamic UniversityIslamabad, 44000, Pakistan;Department of Botany, Mirpur University of Science and Technology (MUST), Mirpur Azad Kashmir 10250, Pakistan;Department of Chemistry, Kohat University of Science & Technology Kohat-26000, Khyber Pakhtunkhwa, Pakistan;Department of Chemistry, Panjab University, Chandigarh, 160014, India;Department of Microbiology, QAU, Islamabad-45320, Islamabad, Pakistan;School of Electrical Engineering and Computer Science, Faculty of Engineering, University of Ottawa, Ottawa, ON, K1N 6N5, Canada;

关键词: green synthesis;    silver nanoparticles;    plant extract;    antibacterial activity;    agar well diffusion;   

DOI  :  10.1515/gps-2020-0064

来源: DOAJ

【 摘 要 】

The current study was conducted to assess the potential of ginger rhizome extract (Zingiber officinale) for the synthesis of silver nanoparticles (AgNPs) through the green method and its mitigating activity against pathogenic bacterial strains. AgNPs were synthesized through a simple one-step approach and characterized by UV-Visible (UV-Vis) spectroscopy, powder X-ray diffraction (PXRD), transmission electronic microscopy (TEM), and energy dispersive X-rays spectroscopy (EDS). PXRD and TEM results of AgNPs showed the face central cubic structures and predominantly spherical structures with a size of 6.5 nm. EDS analysis confirms the elemental silver in nanoparticles. Moreover, the impact of the pH, as well as temperature, during the synthesis of AgNPs has also been investigated. At 25°C and pH 5, there was no significant peak for AgNPs in the absorption spectra. However, with an increase in temperature from 25°C to 85°C and pH 5 to pH 11, particles started attaining the spherical shape of different sizes due to an increase in the reduction rate. The AgNPs displayed effective results against selected pathogenic strains, Pseudomonas aeruginosa (MTCC 424), Methicillin-resistant Staphylococcus aureus (ATCC 43300), and fungus Candida albicans (KACC 30003). The prepared AgNPs exhibited excellent antioxidant activity and catalytic reduction of methyl orange with the pseudo-first-order rate constant of 3.9 × 10−3.

【 授权许可】

Unknown