히비스커스 찻잎의 원산지 별 항산화 물질과 항산화능 간의 상관관계 분석

Abstract

The antioxidant compounds (total anthocyanins, total flavonoids, and total phenolics) and total antioxidant activities (DPPH and ABTS radical scavenging activity) of hibiscus teas of four different origins (Egypt, the United States, Nigeria, and Indonesia) were compared and the correlation between antioxidant compounds and activity was investigated. The total anthocyanin content of hibiscus teas from Egypt was significantly higher than that of other origins. Additionally, the total phenolic contents occurred in the following order: Egypt (1295.18 mg GAE/100 g DW), Nigeria (1082.54 mg GAE/100 g DW), the USA (1017.14 mg GAE/100 g DW), and Indonesia (963.69 mg GAE/100 g DW), with the content of tea from Indonesia being significantly lower than that of other origins. There were no significant differences among the antioxidant activities of teas from Egypt, the USA, and Nigeria, but the activity of tea from Indonesia was significantly lower than that of teas from other origins. In addition, the total anthocyanin contents and total phenolics were highly correlated (R=0.862), while the relationship between the DPPH scavenging activity and total flavonoids was R=0.675. Overall, the antioxidant compounds and activities of Egyptian hibiscus tea were significantly higher than those of Indonesian hibiscus tea.