Foliar application of AgNPs synthesized with different methods modifies the nutritional properties of potato tubers

Abstract

The effectiveness of silver nanoparticles, addressing different methods of their synthesis, with regard both to accumulation of Ag ions and the nutritional properties of potato tubers in field potato cultivation was the aim of presented study. Potato plants were sprayed with different concentration of Ag nanoparticles (0.1, 1.0 and 10 mg·dm^− 3) synthesized with incorporation with sodium dodecyl sulphate (SDS) and sodium citrate as capping agent. The lowest amounts of silver ions were transported to the tubers after spraying with AgNPs synthesized with SDS, rather than with citrate. Nevertheless silver ions accumulation in tubers was negligible. SDS method of synthesis was more favourable in terms of nutritional properties of potato tubers. The highest tested concentration of AgNPs_SDS had a favourable effect on a variety of macro- and micronutrients, ascorbic acid and soluble sugars. In turn, lower concentrations of AgNPs_SDS increased the content of phenolic compounds and free radical scavenging efficiency of tubers.