Antioxidant Capacity and Bioactive Composition of a Single Serving Size of Regular Coffee Varieties Commercially Available in Korea
2013
Kim, M.J., Sungshin Womens University, Republic of korea | Park, J.E., Sungshin Womens University, Republic of korea | Lee, J.H., Sungshin Womens University, Republic of korea | Choi, N.R., Sungshin Womens University, Republic of korea | Hong, M.H., Sungshin Womens University, Republic of korea | Pyo, Y.H., Sungshin Womens University, Republic of korea
The major hydrophilic bioactive compounds (chlorogenic acid, caffeine, total phenolics, and flavonoids) and the antioxidant capacity in a single size were evaluated for regular coffee varieties commercially available in Korea. The content of total phenols (63.83-110.12 mg gallic acid equivalents) and flavonoids (35.27-69.27 mg catechin equivalents) were spectrophotometrically determined, and the content of chlorogenic acid (5.17-69.78 mg) and caffeine (74.38-146.32 mg) were determined using HPLC-UV. All varieties of regular coffee studied showed antioxidant potential (88.78-487.52 mg trolox equivalents/serving size), which was conferred by their concentrations of phenolic compounds, caffeine and chlorogenic acid. There were significant (p0.01) correlations between the total phenolics (r2
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