Antioxidant activity can also be assessed by the oxygen radical absorbance capacity (ORAC). The ORAC method estimates the antioxidant capacity of a sample by taking the oxidation reaction to completion whereas DPPH estimates the stable free radical and thus is more appropriate to characterise the antioxidant activity in a food sample. In a study of the commercial frozen lowbush blueberries, which contained lower levels (60%–80%) of “blue” than the other samples, it was found that the antioxidant activity (ORAC) was comparable to that of the fresh fruits [19]. This result supported an earlier study on variation in ORAC based on variety, maturity, and source, done by Prior et al