a positive trendgold
54 , 55 , 56 Previous studies 46,47 reported a positive trend for the increase of most bioactive compounds in blood oranges, such as organic acids (ascorbic acid, malic acid and citric acid), phenolic compounds (didymin, narirutin, and vicenin‐2), anthocyanin compounds (cyanidin 3‐ O ‐glucoside and cyanidin 3‐ O ‐(6′′‐acetyl) glucoside) and antioxidant activity.