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Green Synthesis of Silver Nanoparticles by Cytobacillus firmus Isolated from the Stem Bark of Terminalia arjuna and Their Antimicrobial Activity
This work reports an eco-friendly synthesis of silver nanoparticles (AgNPs) using endophytic bacteria, Cytobacillus firmus isolated from the stem bark of Terminalia arjuna. The synthesis of AgNPs was confirmed by visual observation as a change in color of the bacterial solution impregnated with silv...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7916701/ https://www.ncbi.nlm.nih.gov/pubmed/33578957 http://dx.doi.org/10.3390/biom11020259 |
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author | Sudarsan, Sujesh Kumar Shankar, Madan Kumar Belagal Motatis, Anil Shankar, Sushmitha Krishnappa, Darshan Mohan, Chakrabhavi Dhananjaya Rangappa, Kanchugarakoppal S. Gupta, Vijai Kumar Siddaiah, Chandra Nayaka |
author_facet | Sudarsan, Sujesh Kumar Shankar, Madan Kumar Belagal Motatis, Anil Shankar, Sushmitha Krishnappa, Darshan Mohan, Chakrabhavi Dhananjaya Rangappa, Kanchugarakoppal S. Gupta, Vijai Kumar Siddaiah, Chandra Nayaka |
author_sort | Sudarsan, Sujesh |
collection | PubMed |
description | This work reports an eco-friendly synthesis of silver nanoparticles (AgNPs) using endophytic bacteria, Cytobacillus firmus isolated from the stem bark of Terminalia arjuna. The synthesis of AgNPs was confirmed by visual observation as a change in color of the bacterial solution impregnated with silver. Further, the morphology of the AgNPs, average size, and presence of elemental silver were characterized by UV–Visible spectroscopy, scanning electron microscopy, and dynamic light scattering spectroscopy. The roles of endophytic secondary metabolites in the metal reduction, stabilization, and capping of silver nanoparticles were studied by qualitative FTIR spectral peaks. The antimicrobial ability of AgNPs was evaluated against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria and pearl millet blast disease-causing fungi (Magnoporthe grisea). The biosynthesized AgNPs showed good antibacterial and antifungal activities. AgNPs effectively inhibited the bacterial growth in a dose-dependent manner and presented as good antifungal agents towards the growth of Magnoporthe grisea. |
format | Online Article Text |
id | pubmed-7916701 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79167012021-03-01 Green Synthesis of Silver Nanoparticles by Cytobacillus firmus Isolated from the Stem Bark of Terminalia arjuna and Their Antimicrobial Activity Sudarsan, Sujesh Kumar Shankar, Madan Kumar Belagal Motatis, Anil Shankar, Sushmitha Krishnappa, Darshan Mohan, Chakrabhavi Dhananjaya Rangappa, Kanchugarakoppal S. Gupta, Vijai Kumar Siddaiah, Chandra Nayaka Biomolecules Article This work reports an eco-friendly synthesis of silver nanoparticles (AgNPs) using endophytic bacteria, Cytobacillus firmus isolated from the stem bark of Terminalia arjuna. The synthesis of AgNPs was confirmed by visual observation as a change in color of the bacterial solution impregnated with silver. Further, the morphology of the AgNPs, average size, and presence of elemental silver were characterized by UV–Visible spectroscopy, scanning electron microscopy, and dynamic light scattering spectroscopy. The roles of endophytic secondary metabolites in the metal reduction, stabilization, and capping of silver nanoparticles were studied by qualitative FTIR spectral peaks. The antimicrobial ability of AgNPs was evaluated against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria and pearl millet blast disease-causing fungi (Magnoporthe grisea). The biosynthesized AgNPs showed good antibacterial and antifungal activities. AgNPs effectively inhibited the bacterial growth in a dose-dependent manner and presented as good antifungal agents towards the growth of Magnoporthe grisea. MDPI 2021-02-10 /pmc/articles/PMC7916701/ /pubmed/33578957 http://dx.doi.org/10.3390/biom11020259 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Sudarsan, Sujesh Kumar Shankar, Madan Kumar Belagal Motatis, Anil Shankar, Sushmitha Krishnappa, Darshan Mohan, Chakrabhavi Dhananjaya Rangappa, Kanchugarakoppal S. Gupta, Vijai Kumar Siddaiah, Chandra Nayaka Green Synthesis of Silver Nanoparticles by Cytobacillus firmus Isolated from the Stem Bark of Terminalia arjuna and Their Antimicrobial Activity |
title | Green Synthesis of Silver Nanoparticles by Cytobacillus firmus Isolated from the Stem Bark of Terminalia arjuna and Their Antimicrobial Activity |
title_full | Green Synthesis of Silver Nanoparticles by Cytobacillus firmus Isolated from the Stem Bark of Terminalia arjuna and Their Antimicrobial Activity |
title_fullStr | Green Synthesis of Silver Nanoparticles by Cytobacillus firmus Isolated from the Stem Bark of Terminalia arjuna and Their Antimicrobial Activity |
title_full_unstemmed | Green Synthesis of Silver Nanoparticles by Cytobacillus firmus Isolated from the Stem Bark of Terminalia arjuna and Their Antimicrobial Activity |
title_short | Green Synthesis of Silver Nanoparticles by Cytobacillus firmus Isolated from the Stem Bark of Terminalia arjuna and Their Antimicrobial Activity |
title_sort | green synthesis of silver nanoparticles by cytobacillus firmus isolated from the stem bark of terminalia arjuna and their antimicrobial activity |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7916701/ https://www.ncbi.nlm.nih.gov/pubmed/33578957 http://dx.doi.org/10.3390/biom11020259 |
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