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In this study, the synthesis of nanoparticles and their biological evaluation were carried out. A green synthetic approach synthesized silver nanoparticles (AHAgNPs) using an Artocarpus heterophyllus leaf extract. Parameter optimization was performed using Design Expert Ver. 13. The effects of variables like the concentration on the response, particle size, and entrapment efficiency of synthesized AHAgNPs were monitored via analysis of variance. The optimized AgNPs were characterized using ultraviolet-visible spectroscopy and Fourier transform infrared spectroscopy. Scanning electron microscopy and transmission electron microscopy were used to determine the size and shape of nanoparticles. In vitro, antioxidant and antimicrobial potential were determined using standard protocols. The optimized nanoparticles were spherical, with an average 100-110 nm particle diameter. The synthesized nanoparticles showed effective antioxidant, antibacterial, and antifungal activity. In addition, AHAgNPs showed increased biological activities. [ABSTRACT FROM AUTHOR]

The present study is based on optimized green synthesis of silver nanoparticles (AgNPs) using Manilkara zapota fruit extract, formulation of topical gels, and evaluation for their antimicrobial properties. The results reveal that a reaction temperature of 35 °C and a reaction time of 11 h are the optimum conditions to get spherical AgNPs with a particle size of 100.7 nm and a zeta potential of -26.7 mV. The synthesized AgNPs formulated as topical gels demonstrate a broad-spectrum antimicrobial activity against Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Aspergillus niger in comparison to the 0.2% (mass fraction) silver nitrate marketed formulation. The AgNPs loaded gels seem promising and could lead to a useful alternative for treating pathogenic infections. [ABSTRACT FROM AUTHOR]