Flavonoid constituents and their contribution to antioxidant activity in cultivars and hybrids of rabbiteye blueberry (Vaccinium ashei Reade)

► We characterised the variations in antioxidant content among 42 existing blueberry cultivars. ► Blueberry cultivars with high antioxidants were identified. ► The contributions of flavonoid constituents to antioxidant activity were determined.