Cultivar effect on the sweet cherry antioxidant and some chemical attributes

This research was carried out to evaluate the phenolic composition, antioxidant capacities, sugars and organic acids content of sweet cherry cultivars (Bianca, Burlat, Johanna 1, Johanna 2, Kordia, Kunzes Kirsche, Merton Premier, Napoleon, Orleans, Regina, Rivan, Schneiders Spate Knorpelkirsche, Summit, Trebnitzer Lotkirsche) grown in Poland. Significant differences were observed between tested cultivars for all studied parameters.

The sum of total soluble solids ranged from 14.3 (‘Burlat’) to 20.9 g 100 g⁻¹ FW (‘Bianca’) and that of organic acids from 0.43 (‘Burlat’) to 0.76 g 100 g⁻¹ FW (‘Napoleon’). Fruit of Bianca cultivar showed the highest levels of anthocyanin (108.5 mg 100 g⁻¹ FW) while ‘Napoleon’ and ‘Kunzes Kirsche’ contained the lowest levels (1.5 and 1.8 mg 100 g⁻¹ FW, respectively). Total phenolic contents ranged from 101 (‘Napoleon’) to 558 (‘Bianca’) mg 100 g⁻¹ FW, tartaric esters from 26.2 (‘Summit’) to 66.5 (‘Bianca’) mg 100 g⁻¹ FW and flavonoids from 7.9 (‘Summit’) to 49.1 (‘Bianca’) mg 100 g⁻¹ FW. Bianca cultivar has also the highest free radical scavenging activity assayed by ABTS and DPPH methods 88 and 90% respectively.