Antioxidant Activity, Total Phenolic Content, Total Flavonoid Content, and Total Anthocyanin Content of Vaccinium oldhamii Miq. Collected from 11 Regions of South Korea

Antioxidant Activity, Total Phenolic Content, Total Flavonoid Content, and Total Anthocyanin Content of Vaccinium oldhamii Miq. Collected from 11 Regions of South Korea

We studied antioxidant activities of Vaccinium oldhamii Miq. from 11 regions in South Korea and blueberries, domestically produced and imported. Correlation analysis between V. oldhamii habitats, environmental factors, and antioxidant properties was conducted. DPPH RC50 values ranged from 220.44 to 902.38㎍/mL, ABTS from 524.29 to 1230.97 ㎍/mL, and FRAP from 1783.71 to 2235.78 ㎛ Fe (II)/g. V. oldhamii from Gumi showed highest DPPH activity, Taean and Haenam for ABTS, and Gimcheon for FRAP. V. oldhamii exhibited superior antioxidant activities compared to blueberries. Meteorological conditions correlated positively with ABTS and DPPH activities, negatively with wind speed and humidity affecting DPPH and phenolic, flavonoid, and anthocyanin contents. Based on these findings, it is suggested that V. oldhamii fruits collected from Gimcheon and Gumi regions can be effectively utilized as natural antioxidants derived from plant materials.