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2006•Analytical Science and TechnologyRequires access

Antioxidant activities of Pu-erh tea

Eun Mee So, Eun Joo Jung, Chang Chul Shin, Sung Hyun Kim, Soon Ok Baek, Young‐Man Kim, Il Kwang Kim

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Abstract

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 two different methods, free radical scavenging activity measurement and reductive potential. Those antioxidant activities were compared to standard antioxidants such as butylated hydroxyanisole(BHA), butylated hydroxytoluene (BHT), and -tocopherol. EA fraction of Pu-erh tea was showed excellent antioxidative activities over BHA and BHT.

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What this paper is about

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 two different methods, free radical scavenging activity measurement and reductive potential. Those antioxidant activities were compared to standard antioxidants such as butylated hydroxyanisole(BHA), butylated hydroxytoluene (BHT), and -tocopherol. EA fraction of Pu-erh tea was showed excellent antioxidative activities over BHA and BHT.

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Available abstract

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 two different methods, free radical scavenging activity measurement and reductive potential. Those antioxidant activities were compared to standard antioxidants such as butylated hydroxyanisole(BHA), butylated hydroxytoluene (BHT), and -tocopherol. EA fraction of Pu-erh tea was showed excellent antioxidative activities over BHA and BHT.

Key concepts: Butylated hydroxyanisole, Butylated hydroxytoluene, Chemistry, Antioxidant, Food science, Ethyl acetate, Organic chemistry

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