Preparation of Quercetin/Copper Nanoparticles and Their Preservation Performance on Shine Muscat Grapes

grapes resulted in an 8.08% reduction in weight loss in comparison to the control, which exhibited a 10.40% reduction. The coating maintained firmness and preserved titratable acid content, thereby extending the storage life of the grapes. These findings position QC NPs as a promising material in eco-friendly and effective fruit preservation, and offer a viable solution to postharvest fruit preservation.