Evaluation of antibiofilm and catalytic activity of biogenic silver nanoparticles synthesized from Acacia nilotica leaf extract

Abstract

In the current research of bacteriology, the biofilm infections are becoming serious issues. The biofilm has potential resistant towards antibiotics, even at higher concentration, due to the protective covering that enable unavailability of these antibiotics towards bacteria residing inside. Thus to combat these problems, biogenic silver nanoparticles (AgNPs) of spherical shape were synthesized having potential against biofilm forming bacteria. Here, we focused on the green synthesis owing to its inherent features such as simplicity, eco-friendliness, cheap rate and rapidity. We have synthesized AgNPs using the aqueous extract of Acacia nilotica leaf. The bioactive compounds present in the extract are responsible for the reduction of to . The synthesis conditions were optimized using critical parameters and the optimized one was then characterized via UV-Vis spectroscopy, dynamic light scattering, transmission electron microscopy, x-ray diffraction and Fourier transform infrared spectroscopy. Further, synthesized AgNPs were used to evaluate strong antibacterial activity and catalytic potential that was assessed against degradation of anthropogenic pollutant 4-NP and azo dyes: methylene blue and congo red.

Phyto-fabricated Nanoparticles and Their Anti-biofilm Activity: Progress and Current Status

“…A similar study done by Arya et al indicated that AgNPs prepared using aqueous leaf extract of Acacia nilotica inhibited biofilm formation by 70% and 53% in Pseudomonas aeruginosa and Staphylococcus aureus respectively at a concentration of 0.25 µg (Arya et al, 2018).…”

Antibacterial Effects of Green-Synthesized Silver Nanoparticles Using Ferula asafoetida against Acinetobacter baumannii Isolated from the Hospital Environment and Assessment of Their Cytotoxicity on the Human Cell Lines

“…Although several medicinal plant extracts containing different reducing agents, such as phenolic, polyphenol, and flavonoid compounds, have been widely applied for the green synthesis of AgNP [10][11][12], there are few reports on the use of F. asafoetida and its natural constituents for the biosynthesis of AgNPs. Ferula asafoetida contains many natural metabolites, including proteins, polysaccharides, alkaloids, and alcoholic compounds, which can act as reducing agents and exert beneficial biological effects.…”

Exploring the Antibacterial and Antibiofilm Efficacy of Silver Nanoparticles Biosynthesized Using Punica granatum Leaves

“…Different types and parts of a plant such as Prosopis juliflora bark, Prosopis juliflora leaf, Cicer arietinum leaves, Trigonella foenum-graecum seed, Terminalia chebula fruit, Saraca indica flower, Punica granatum peel, Acacia nilotica leaf, etc. have been used for biosynthesis of sAgNPs [ 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. Not only the plant parts but the waste from the plants have also been explored for the biosynthesis of AgNPs, such as lignin extracted from wheat straw and grape pomace from the wine industry [ 16 , 17 ].…”