Silver nanoparticles (AgNPs) fabricating potential of aqueous shoot extract of Aristolochia bracteolata and assessed their antioxidant efficiency

• Published in: Environmental research Vol. 208; p. 112683
• Main Authors: Thanh, Nguyen Chi, Pugazhendhi, Arivalagan, Chinnathambi, Arunachalam, Alharbi, Sulaiman Ali, Subramani, Baskaran, Brindhadevi, Kathirvel, Whangchai, Niwooti, Pikulkaew, Surachai
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier Inc 15.05.2022
• Subjects: AgNPs; Antioxidant activity; Antioxidants; Aristolochia; Aristolochia bracteolata; FTIR; Hydrogen Peroxide; Metal Nanoparticles - chemistry; Plant Extracts; SEM; Silver - chemistry; Spectroscopy, Fourier Transform Infrared; AgNPs; SEM; Aristolochia bracteolata; FTIR; Antioxidant activity
• ISSN: 0013-9351; 1096-0953
• DOI: 10.1016/j.envres.2022.112683

This research was performed to evaluate the silver nanoparticles (AgNPs) fabricating potential of aqueous shoot extract of Aristolochia bracteolata and also assess the free radicals scavenging potential of synthesized AgNPs. The results obtained from this study showed that the aqueous shoot extract of A. bracteolata has the potential to synthesize the AgNPs and it was initially confirmed by color change in the reaction blend as yellow to dark brownish. Subsequently, a clear absorbance peak was found at 425 nm in UV–visible spectrum analysis. The functional groups involved in the capping and stabilization of AgNPs were confirmed by Fourier Transform-Infrared spectroscopy (FTIR) analysis and recorded about 10 sharp peaks 3688, 3401, 2980, 2370, 1948, 1642, 1480, 1280, 782, and 628 cm−1. The Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM) observations revealed that the predominant shape of the AgNPs was spherical and size ranged from 41.43 to 60.51 nm. Interestingly, the green fabricated AgNPs showed significant free radicals scavenging activity and were confirmed with ferric reducing assay, 1, 1-diphenyl-2-picryl-hydrazyl (DPPH), H2O2 radicals, and 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radicals scavenging activity. Thus, after a few in-vivo antioxidant studies, Aristolochia bracteolata-mediated AgNPs can be considered as an antioxidant agent. •The shoot extract of Aristolochia bracteolata has the potential to synthesize AgNPs.•Synthesized AgNPs were spherical in shape and size ranging from 41.43 to 60.51 nm.•The first report on AgNPs synthesized from A. bracteolata aqueous shoot extract.•AgNPs mediated by A. bracteolata demonstrated excellent antioxidant activity.•On antioxidant assays, the IC50 of AgNPs ranged from 54.64 to 78.00 g mL−1