The juice was submitted to refrigeration and analyzed every
other day; it show a significant decrease in activity (p < 0.05) by
the DPPH method from the 8th day of storage, and a significant
increase in activity on the 6th day. By the ABTS method, the
antioxidant capacity also increased on day 6 and decreased on day
8, but also showed significant reductions on days 2 and 4 of
refrigerated storage. By both methods, the whole blueberry juice
lost about 40% of its antioxidant activity during storage at 4 8C
for 10 d.