Green Synthesis of Silver and Gold Nanoparticles Using Root Bark Extract of Mammea suriga: Characterization, Process Optimization, and Their Antibacterial Activity

2016 ◽  
Vol 6 (2) ◽  
pp. 110-120 ◽  
Author(s):  
Mahesha M. Poojary ◽  
Paolo Passamonti ◽  
Airody Vasudeva Adhikari
Keyword(s):  
Gold Nanoparticles ◽  
Antibacterial Activity ◽  
Green Synthesis ◽  
Process Optimization ◽  
Bark Extract ◽  
Root Bark ◽  
Silver And Gold Nanoparticles

scholarly journals Green Synthesis of Gold Nanoparticles using Adina Cordifolia Bark Extract and its Antimicrobial and in Vitro Anticancer Study

2019 ◽  
pp. 143-152
Author(s):  
Shaileshkumar C Kotval
Keyword(s):  
Gold Nanoparticles ◽  
Antibacterial Activity ◽  
Green Synthesis ◽  
Anticancer Activity ◽  
Cancer Cell Line ◽  
Medical Application ◽  
Positive Control ◽  
Bark Extract ◽  
Uv Visible

In this study, green synthesis of gold nanoparticles were success fully synthesised by using <em>Adina cordifolia</em> plant bark aqueous extract which provides eco-friendly process, an environmentally benign, easy and proficient way for the synthesis of gold nanoparticles. The smaller size of gold nanoparticles have research on various dieses are very important. The green synthesized gold nanoparticles were characterized by UV-Visible spectroscopy, FT-IR, XRD, SEM, TEM and their antimicrobial activity was investigated. From UV-Visible spectrophotometer result was confirmed the formation of gold nanoparticles by color changed to ruby red color from pale yellow color indicates the reduction of Au<sup>3+</sup> ions to Au<sup>o</sup>. The antibacterial activity for the synthesized gold nanoparticles was confirmed by the antibacterial activity experiment against <em>Bacillus subtilis </em>and <em>Escherichia coli</em> by agar well method. The synthesized AuNPs was performed anticancer activity against MCF-7 breast cancer cell line. Compared to Adriamycin, Positive Control Compound AuNPs exhibited potent anticancer activity with the IC<sub>50</sub>. The green synthesized gold nanoparticles proved to be potential candidates for medical application antimicrobial and anticancer activity is highly essential.

scholarly journals In vitro and in vivo evaluation of antibacterial activity of Bridelia ferruginea extracts on some clinical isolates

2018 ◽  
Vol 7 (4) ◽  
pp. 392-398
Author(s):  
B.T Yunana ◽  
◽  
B. B Bukar ◽  
J. C Aguiyi ◽  
◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Bark Extract ◽  
Root Extract ◽  
Root Bark ◽  
Zone Of Inhibition ◽  
Bridelia Ferruginea

The ethanol extracts of root, bark and leaf of Bridelia ferruginea was investigated for antibacterial activity against clinical isolate of Staphylococcus aureus and Escherichia coli. The extracts had significant antibacterial activity in vitro at concentration of 25 mg/ml, 50 mg/ml, 100 mg/ml and 200 mg/ml and in vivo at dose of 50 mg/kg and 100 mg/kg. The root extract in vitro had the highest zone of inhibition, followed by the bark extract for both Staphylococcus aureus and Escherichia coli. The concentration of 200 mg/ml had the highest zone of inhibition in vitro. The minimum inhibitory concentration (MIC) showed a decreasing inhibitory effect of the plant extracts for both Staphylococcus aureus and Escherichia coli as the concentration decreases with root having 3.125 mg/ml, bark having 6.25 mg/ml and leaf having 25 mg/ml for Staphylococcus aureus and Escherichia coli. Likewise, the minimum bactericidal concentration (MBC) showed decreasing bactericide effects with decrease concentration with root having 12.5 mg/ml, bark having 12.5 mg/ml and leaf having 25 mg/ml for Escherichia coli while root had 6.25mg/ml, bark had 12.5mg/ml and leaf had 25mg/ml for Staphylococcus aureus. The in vivo investigation showed that the root and bark extract exhibited antibacterial activity on both Staphylococcus aureus and Escherichia coli at doses of 100mg/kg and 50mg/kg; the root extract had higher activity than the bark and root/bark combined. The dose of 100 mg/kg had the highest colonies reduction for Staphylococcus aureus and Escherichia coli in vivo. Preliminary phytochemical screening of root, bark and leaves of Bridelia ferruginea revealed the presence of tannins, flavonoids, carbohydrates, cardiac glycoside (root, bark and leaves), saponins (root and bark). The presence of tannins, saponins, flavonoid, cardiac glycoside and carbohydrate in the bark and root extracts of the plant indicates that the bark and root extracts were pharmacological importance

scholarly journals Green ultrasonic synthesis, Characterization and Antibacterial activity of Silver and Gold Nanoparticles mediated by Ganoderma lucidum extract

2020 ◽  
Vol 4 (2) ◽  
Keyword(s):  
Gold Nanoparticles ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Metal Nanoparticles ◽  
Cytotoxic Activities ◽  
Gold And Silver Nanoparticles ◽  
Silver And Gold Nanoparticles ◽  
E Coli ◽  
Inhibition Zones

Metal nanoparticles possess an extensive scientific and technological significance due to their unique physiochemical properties and their potential applications in different fields like medicine. Silver and gold nanoparticles have shown to have antibacterial and cytotoxic activities. Conventional methods used in the synthesis of the metal nanoparticles involve use of toxic chemicals making them unsuitable for use in medical field. In our continued effort to explore for simple and eco-friendly methods to synthesize the metal nanoparticles, we here describe synthesis and characterization of gold and silver nanoparticles using Gonaderma lucidum, wild non-edible medicinal mushroom. G. lucidum mushroom contain bioactive compounds which can be involved in the reduction, capping and stabilization of the nanoparticles. Antibacterial activity analysis was done on E. coli and S. aureus. The synthesis was done on ultrasonic bath. Characterization of the metal nanoparticles was done by UV-VIS., High Resolution Transmission Electron Microscope (HRTEM) and FTIR. HRTEM analysis showed that both silver and gold nanoparticles were spherical in shape with an average size of 15.82±3.69 nm for silver and 24.73±5.124nm for gold nanoparticles (AuNPs). FTIR analysis showed OH and -C=C- stretching vibrations, an indication of presence of functional groups of biomolecules capping both gold and silver nanoparticles. AgNPs showed inhibition zones of 15.5±0.09mm and 13.3±0.14mm while AuNPs had inhibition zones of 14.510±0.35 and 13.3±0.50mm on E. coli and S. aureus respectively. The findings indicate the potential use of AgNPs and AuNPs in development of drugs in management of pathogenic bacteria.

Green synthesis of gold nanoparticles with willow tree bark extract: a sensitive colourimetric sensor for cysteine detection

2014 ◽  
Vol 6 (17) ◽  
pp. 6916-6924 ◽  
Author(s):  
Morteza Bahram ◽  
Esmat Mohammadzadeh
Keyword(s):  
Gold Nanoparticles ◽  
Green Synthesis ◽  
Synthesis Method ◽  
Tree Bark ◽  
Bark Extract ◽  
Willow Tree

In this work we report an easy and simple green synthesis method for gold nanoparticles (GNPs) using willow tree bark extract.

Sign in / Sign up

Export Citation Format

Share Document