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김일광,소은미,정은주,신장철,김성현,백순옥,김영만 한국분석과학회 2006 분석과학 Vol.19 No.1
Puh-erh tea was extracted with water and then fractionated sequentially with n-hexane, ethyl acetate,n-butanol to find antioxidative compounds. The fractions were examined on the antioxidant activity using twodifferent methods, free radical scavenging activity measurement and reductive potential. Those antioxidantactivities were compared to standard antioxidants such as butylated hydroxyanisole(BHA), butylatedhydroxytoluene (BHT), and αover BHA and BHT.