부산대학교 도서관

The aim of this study was to evaluate the antioxidant activities of essential oil and various solvent-soluble extracts from twigs of Zelkova serrata. Results demonstrated that the acetone extract possessed the great free radical scavenging activities, trolox equivalent antioxidant capacity (TEAC) and reducing power more than other solvent-soluble extracts and essential oil from Z. serrata twig. In addition, the twig acetone extract contained the highest level of total phenolic content (TPC) and total flavonoid content (TFC). The antioxidant activities of 4 soluble fractions from twig acetone extract were further examined. Results showed that the water soluble fraction had an excellent free radical scavenging activities and reducing power more than other soluble fractions. However, the ethyl acetate soluble fraction had the greatest TEAC. In addition, TPC and TFC of 4 soluble fractions were also examined. Results showed that the TPC and TFC of both water and BuOH soluble fractions were at the highest level. Based on the results, it revealed that the acetone extract of twigs from Z. serrata could be used as a potential source for antioxidants and is worth for further investigation.