Antioxidant activity was 24, 21, and 23% higher in the first postharvest interval (up to 3 weeks postharvest) than at harvest for Bluegold, Legacy, and Nelson, respectively, but only the 29% increase demonstrated by MSU-58 during this interval was significant. In the second postharvest interval (3-5 weeks postharvest), cultivars did not change in antioxidant activity. Of the three cultivars that stored successfully for 7 weeks, only MSU-58 showed a decrease from the maximum antioxidant activity attained during storage. However, antioxidant activity at 7 weeks postharvest was not lower than at harvest for this cultivar. MSU-58 and Legacy both ranked relatively high for antioxidant activity at harvest, demonstrated substantial increases in antioxidant activity during storage, and stored successfully for 7 weeks, whereas Brigitta, which also stored successfully for seven weeks, was relatively low in antioxidant activity at harvest (Table 1) and showed no change in antioxidant activity during storage.