All the isolates were evaluated for their antioxidant activities by DPPH radical scavenging and tyrosinase inhibitory assays.
Though the secondary metabolites without caffeine and catechins are different from the commonly consumed tea plants, the results suggested that the leaves of C. pachyandra, rich in hydrolyzable tannins as potent antioxidants, could be developed as an ideal resource for a natural beverage without caffeine.