Biogenic synthesis, characterization and application of silver nanoparticles as biostimulator for growth and rebaudioside-A production in genetically stable stevia (Stevia rebaudiana Bert.) under in vitro conditions

Penicillium polonicum-mediated green synthesis of silver nanoparticles: Unveiling antimicrobial and seed germination advancements

“…An additional peak between 1400 and 1550 cm −1 indicated the presence of N–H aromatic secondary amine, attributed to the N–H stretching in the synthesized AgNPs. The strong adsorption band at 1600–1650 cm −1 , attributed to the carbonyl stretching in the protein's C O group, suggested the presence of proteins or other compounds on the AgNP surface, contributing to stability and preventing agglomeration [ 37 ].…”