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A medicinally important Sida cordifolia leaf extract has been used for biogenic synthesis of silver nanoparticles (AgNPs) in presence of sunlight and demonstrated enhanced biological activities. AgNPs were characterized using UV–vis spectroscopy, Fourier Transform Infrared spectroscopy (FTIR), transmission electron microscope (TEM), scanning electron microscope (SEM), Zeta potential and energy dispersive X-ray analysis (EDAX). Interestingly, bio-functionalized AgNPs displayed higher antioxidant activity in terms of reducing power on ferric ion (1.83 AU) and phosphomolybdate (2127 Ascorbic acid Equivalent Antioxidant Activity) and radical scavenging activity against superoxide (IC50 value 46.25 µg/ml) and DPPH radicals (IC50 value 50.12 µg/ml) compared to the standard. AgNPs has also exhibited cytotoxic effect with IC 50 value of 204 and 129 µg/ml against EAC and HT-29 cancer cell lines, respectively which indicates the AgNPs are effective than that of commercially available drug. Thus, enhanced biological activities have been achieved by incorporating AgNPs with biologically active molecules. [ABSTRACT FROM AUTHOR]

The present study was aimed at the biosynthesis of silver nanoparticles (AgNPs) using aqueous extract of Clerodendron serratum (AECS) leaves and testing their potential in vitro anticancer activity using Ehrlich ascites carcinoma (EAC) cell lines. This medicinal plant was found to be rich in polyphenol glycosides and two compounds-baicalein and quercetin 3-O-β- d -glucoside was isolated from the extract. The biologically synthesized AgNPs were characterized using UV–vis spectrophotometry, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and X-ray Diffraction (XRD). The antiproliferative ability of the AgNPs was evaluated using cell viability and MTT assays and the results showed that biosynthesized AgNPs possesses significant in vitro antiproliferative activity. [ABSTRACT FROM AUTHOR]

The present study focuses on the green synthesis of silver nanoparticles using aqueous extract of Tephrosia tinctoria (TT). This medicinal plant was rich in phenol and flavonoids groups of compounds. They reduced the silver nitrate into silver nanoparticle (AgNPs) and which were characterized using UV–vis spectrophotometry, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Energy Dispersive X-Ray (EDAX) patterns and FT-IR. The XRD analysis illustrated that the silver nanoparticles were crystalline in nature. The SEM and TEM analyses revealed that the synthesized silver nanoparticles were spherical in shape and the particle size was found to be less than 100 nm. The antidiabetic ability of the AgNPs was tested and the results showed significant free radical scavenging ability, inhibition of carbohydrate digestive enzymes (α-Glucosidase and α-Amylase) and enhancement of Glucose uptake rate. The FT-IR result revealed that the presence of various functional groups around AgNPs. [ABSTRACT FROM AUTHOR]