摘要 : Background: Plant based synthesis of nanoparticles is a green chemistry approach which links plants with nanotechnology and look to be the best substitute against synthetic nano-products. Gold nanoparticles (AuNPs) mediated plant ... 展开 Background: Plant based synthesis of nanoparticles is a green chemistry approach which links plants with nanotechnology and look to be the best substitute against synthetic nano-products. Gold nanoparticles (AuNPs) mediated plant extracts are providing huge biological and environmental applications including antioxidant, anti-inflammatory, antimicrobial anticancer activities and catalytic action. Kaempferia parviflora (K. parviflora) is a medicinal plant commonly known as black ginger (BG), which has extensive pharmacological activities. Ecofriendly: AuNPs was synthesized using an aqueous extract of K. parviflora rhizome. The synthesized black ginger gold nanoparticles (BG-AuNPs) was stabilized by chloroauric acid (0.1 mM) and the reaction was completed by 30 min at 30 degrees C. The BG-AuNPs were characterized by UV-vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and transmission electron microscopy (TEM). Significant findings The TEM analysis confirmed the BG-AuNPs were well dispersed and smooth surfaced spherical structure with high crystal in nature. The BG-AuNPs showed an excellent antimicrobial activity against both Gram negative and Gram positive microbes and also provided the high antioxidant ability. The BG-AuNPs is a potent catalyst in the MO degradation using sodium borohydride. (c) 2021 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved. 收起