The amount of total phenolics in the CJD varied widely
between 86.93 and 117.43 mg GAE/100 mL. The highest level
of phenolics in the drinks was found in the apple-grape, while
the lowest was in the orange.The total phenolic content in the
orange drink formulations of the present study was close to
those described by Stella, Ferrarezi, Santos, and Monteiro (2011),
for ready-to-drink orange juice and nectar, in which the total
phenolic content varied from 18.7 to 54.2 mg of gallic acid
equivalents/100 mL. As mentioned before, the addition of whitegrape juice, with its high phenolic content, increased the total
phenolic content values of the drink blend. Usage of white grape
juice in the formulations had shown important effect as a phenolic
compound source. The radical scavenging capacities of
the drinks were determined using the ABTS assay. In the ABTS
assay, the values ranged from 104 to 127 mol TEAC/100 mL.
Similar results for orange juice were reported previously by
Stella et al. (2011) where the total antioxidant activity varied
from 57.88 to 315.42 mol TEAC/100 mL in the ready-to-drink
orange juice and from 87.59 to 349.32 mol TEAC/100 mL in the
nectar. Despite the total phenolic content of the drinks with
white grape juice being higher, the ABTS assay results did not
vary markedly.