Green synthesis, characterization, and evaluation of antioxidant, antidiabetic, and anti-periodontal activities of silver nanoparticles from Tecoma stans flower extract
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This study presents a green synthesis of silver nanoparticles (AgNPs) utilizing Tecoma stans flower extract. The biosynthesized AgNPs were rigorously characterized, with UV-Vis spectroscopy confirming surface plasmon resonance, and FTIR identifying key phytochemical functional groups responsible for reduction and stabilization. Advanced microscopy (SEM/TEM) revealed spherical nanoparticles, while EDAX and XRD analysis validated their elemental silver composition and crystalline structure. The AgNPs demonstrated significant antioxidant and anti-diabetic activity in vitro, effectively inhibiting α-amylase and α-glucosidase enzymes. Crucially, this research is the first to report the potent anti-periodontal activity of these AgNPs against key oral pathogens, including Streptococcus mutans and Staphylococcus aureus .
