Comparative study of early- and mid-ripening peach (Prunus persica L.) varieties: biological activity, macro-, and micro- nutrient profile

Fruits have always been a constituent in the dietary recommendations, and have undeniable health promoting properties. Revealing the nutrient profile and biological activity of different fruit varieties is essential for the utilization of their potential beneficial activity. The current study focuses on the detailed comparative analysis of three earlyand two mid-ripening peach varieties: “Filina” (peach), “July Lady” (peach), “Laskava” (peach), “Gergana” (nectarine), and “Ufo-4” (flat peach). They were characterized in terms of essential nutrients as carbohydrates (sugars, pectin, and dietary fibers), proteins (including amino acid content) and lipids as well as organic acids, fat-soluble vitamins, carotenoids and chlorophyll. Mineral content was also determined. In addition, polyphenolic compounds and the related antioxidant activity was studied (FRAP, CUPRAC, DPPH and ABTS methods).