Effect of titanium dioxide nanoparticles on three varieties of table grapes (BidaneSefid, Gezel Ozom and Rish Baba) shelf life and controlling postharvest decay properties

Water losing and fungal decay are the main limiting factors of grape berries during storage. In this study, the effects of plastic film covered with titanium dioxide nanoparticles were investigated on the controlling of postharvest decay and increasing the shelf-life of three table grape cultivars (BidaneSefid, Gezel Ozom, and Rish Baba). The results showed that grape packed in plastic film covered with titanium dioxide nanoparticles considerably decrease berries shedding, decay incidence and weight loss. In addition to, this treatment suppresses decreasing color hue during the storage time. There was no significant difference between treated and untreated samples for berry firmness. Table grape CV. Gezel Ozom showed the best shelf life than two other cultivars. Overall, grapes packed in plastic film coated with titanium dioxide nanoparticles showed better taste, flavor, marketability and general appearance than the control because of lower decay incidence and weight loss.