Abstract
The aim of this study was to investigate the quality characteristics and antioxidant activities of herbal medicine extract granules for the comparison of commercial powder products such as adlay tea powder and roasted grain powder. The antioxidant activities of samples were estimated using reducing power, 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) free radical scavenging activities, and total polyphenolic contents. Herbal extract granules contained 126.44±7.26 mg/100 g of total polyphenolic contents. Interestingly, the highest antioxidant activity was found in 5.5% herbal extract granules, which showed DPPH and ABTS free radical scavenging activities of 71.82% and 85.28%, respectively, at 100 mg/mL and reducing power of O.D 1.25. These results suggested that addition of herbal medicine extract had beneficial effects on the functionality of granules without any affecting on its sensory characteristics.
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