Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Antioxidant activities of Pu-erh tea

보이차(Pu-erh tea)의 항산화 효과

  • So, Eun Mee (Bio-nano Chemistry, College of Natural Science, Institute of Basic Natural Science, Wonkwang University) ;
  • Jung, Eun Joo (Bio-nano Chemistry, College of Natural Science, Institute of Basic Natural Science, Wonkwang University) ;
  • Shin, Chang Chul (Bio-nano Chemistry, College of Natural Science, Institute of Basic Natural Science, Wonkwang University) ;
  • Kim, Sung Hyun (Bio-nano Chemistry, College of Natural Science, Institute of Basic Natural Science, Wonkwang University) ;
  • Baek, Soon Ok (KT&G Central Research Institute) ;
  • Kim, Young Man (Advanced Analysis Center, Korea Institute of Science and Technology) ;
  • Kim, Il Kwang (Bio-nano Chemistry, College of Natural Science, Institute of Basic Natural Science, Wonkwang University)
  • 소은미 (원광대학교 자연과학대학, 기초과학연구소, 생명나노화학부) ;
  • 정은주 (원광대학교 자연과학대학, 기초과학연구소, 생명나노화학부) ;
  • 신장철 (원광대학교 자연과학대학, 기초과학연구소, 생명나노화학부) ;
  • 김성현 (원광대학교 자연과학대학, 기초과학연구소, 생명나노화학부) ;
  • 백순옥 (KT&G 중앙연구소) ;
  • 김영만 (한국과학기술연구원 특성분석센터) ;
  • 김일광 (원광대학교 자연과학대학, 기초과학연구소, 생명나노화학부)
  • Received : 2005.11.21
  • Accepted : 2006.01.12
  • Published : 2006.02.27
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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 ${\alpha}$-tocopherol. EA fraction of Pu-erh tea was showed excellent antioxidative activities over BHA and BHT.

보이차를 물로 추출하고, 항산화성 물질을 얻기위해 n-hexane, ethyl acetate(EA), butanol(BuOH)로 분획하였다. 분획은 자유라티칼 소거 활성과 환원력 측정의 두가지 방법으로 항산화활성 정도를 조사하였다. 이들 항산화활성을 butylated hydroxyanisole(BHA), butylated hydroxytoluene(BHT) 그리고 ${\alpha}$-tocopherol 같은 비교표준 항산화제와 비교하였다. 보이차의 EA분획은 BHA와 BHT 보다 더 높은 항산화활성을 보였다.

Keywords

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