Antioxidant activity correlated strongly with total phenolic content and anthocyanin content within and across storage periods for the nine cultivars examined. Other studies (1, 4) have reported the high correlations among these parameters in blueberries, an association based on concentrations of phenolic acids, anthocyanins, and other flavonoid compounds. These three parameters also correlated weakly and positively with soluble solids, which may reflect the dependence of polyphenolic synthesis or preservation on the available energy pool (14, 15). Antioxidant activity, total phenolic content, and anthocyanin content during storage showed no correlation with important fruit quality parameters such as fruit firmness, weight loss, or bruising.