Anti-Helicobacter pylori, cytotoxicity and catalytic activity of biosynthesized gold nanoparticles: Multifaceted application by Gopinath, Venkatraman, Priyadarshini, S., MubarakAli, Davoodbasha, Loke, Mun Fai, Thajuddin, Nooruddin, Alharbi, Naiyf Sultan, Yadavalli, Tejabhiram, Alagiri, Mani, Vadivelu, Jamuna