Foliar Application of Copper Nanoparticles Increases the Fruit Quality and the Content of Bioactive Compounds in Tomatoes

[...]the reading was taken at an absorbance of 750 nm using a plastic cell in a UV-Vis spectrophotometer (Thermo Fisher Scientific, G10S model, Waltham, MA, USA). [...]the greater accumulation of vitamin C will provide a plant with better characteristics and better fruit quality. [...]the observed increase in flavonoids content is probably related to oxidative stress caused by Cu NPs [62]. [...]it increased the activity of the main enzymes (CAT and SOD) responsible for eliminating ROS. [...]with the application of Cu NPs, better-quality tomato fruits are produced for the human diet due to the accumulation of bioactive compounds.