Antibacterial efficacy of facile cyanobacterial silver nanoparticles inferred by antioxidant mechanism

Nanoparticles (NPs) have gained importance in technological advances owing to their user friendly enhanced and efficient physical, chemical, and biological characteristics compared to their bulk counterparts. Biological synthesis of NPs by using a microorganism, enzymes, or plant extracts offers a g...

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Bibliographic Details
Published in:Materials Science & Engineering C 2021-03, Vol.122, p.111888-111888, Article 111888
Main Authors: Husain, Shaheen, Verma, Suresh K., Hemlata, Azam, Mudsser, Sardar, Meryam, Haq, Q.M.R., Fatma, Tasneem
Format: Article
Language:English
Subjects:
Anti-Bacterial Agents - pharmacology
Antibacterial activity
Antioxidant activity
Antioxidants
Antioxidants - pharmacology
Biosynthesis
Cyanobacteria
Green synthesis
Materials science
Metabolites
Metal Nanoparticles
Nanoparticles
Nostoc
Plant extracts
Plant Extracts - pharmacology
Secondary metabolites
Silver
Silver nanoparticles
Spectroscopy, Fourier Transform Infrared
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Summary:Nanoparticles (NPs) have gained importance in technological advances owing to their user friendly enhanced and efficient physical, chemical, and biological characteristics compared to their bulk counterparts. Biological synthesis of NPs by using a microorganism, enzymes, or plant extracts offers a greener and eco-friendly approach besides many advantages over physical or chemical approaches. This study reports the biosynthesis of silver nanoparticles (AgNPs) using Nostoc muscorum NCCU 442 aqueous extract as the reducing and capping agent for AgNPs synthesis. The synthesized nanoparticles were characterized by UV‐VIS spectrum, SEM, EDS, TEM, AFM, DLS and XRD. Results showed distinguishing polycrystalline nature of synthesized AgNPs with surface plasmon significant band in the size range of 6‐45nm with average 30 size nm. FT-IR study revealed the role of secondary metabolites present in aqueous extract for the synthesis of AgNPs. Biological activities of purified AgNPs as antioxidant and antibacterial potential showed the highest antibacterial activity against Staphylococcus aureus MTCC 902. [Display omitted] •AgNP biosynthesis optimization and characterizations were done by using Nostoc musco-rum NCCU 442 aqueous extract.•Size, shape and purity of AgNP were characterized by SEM, EDS, TEM, AFM and DLS.•XRD pattern exhibited polycrystalline nature of the AgNP.•FT-IR study revealed that the secondary metabolites of extract were responsible for the synthesis of AgNP.•Biosynthesized AgNP showed significant antioxidant and antibacterial potential.
ISSN:0928-4931
1873-0191
DOI:10.1016/j.msec.2021.111888