The DPPH assay is based on the method described by Oyaizu
[27] and Bae and Suh [26]. Astandard curve of ascorbic acid
(y = 10.145 x, r2 = 0.9907)was prepared and results were reported
as micrograms of ascorbic acid equivalent (AAE) per ml juice ex-
tract. The radical scavenging activity was calculated accordin gly: