Korean journal of food and cookery science (한국식품조리과학회지)

Korean Society of Food and Cookery Science (한국식품조리과학회)
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Antioxidative and Antimutagenic Activity of Ethanol Extracts from Cuscutae Semen

토사자(Cuscutae Semen) 에탄올 추출물의 항산화 효과 및 항돌연변이 활성

  • Jeon, Yeon-Hee (Dept. of Food Science and Nutrition, Kyungpook National University) ;
  • Kim, Mi-Hyun (Dept. of Food Science and Nutrition, Kyungpook National University) ;
  • Kim, Mee-Ra (Dept. of Food Science and Nutrition, Kyungpook National University, Dept. of Food Science and Nutrition, Center for Beautiful Aging, Kyungpook National University)
  • 전연희 (경북대학교 식품영양학과) ;
  • 김미현 (경북대학교 식품영양학과) ;
  • 김미라 (경북대학교 식품영양학과, 장수생활과학연구소)
  • Published : 2008.02.29
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Abstract

In this study, the antioxidant and antimutagenic activities of Cuscutae semen ethanol extract were evaluated. Antioxidant activity was measured by the 1,1-diphenyl-2-picrylhydrazyl (DPPH) method and the Ames test was employed to determine the inhibition effect on mutagenicity in Salmonella typhimurium TA100. The extract showed significant free radical-scavenging activity towards the DPPH radical, and at a concentration of 400 ppm, its free radical-scavenging activity was similar to that of BHT. The $IC_{50}$ value of the extract was 89 ppm, indicating good antioxidant capacity. Moreover, at 5 mg/mL, the extract presented inhibitions of approximately 98.0% and 49.2% on mutagenicity induced by 4-nitroquinoline 1-oxide and sodium azide, respectively. The total polyphenols and flavonoid contents of the extract were 20.1 mg/g and 1.9 mg/g, respectively. Therefore, this study indicates that the ethanolic extract of Cuscutae semen has excellent antioxidative and antimutagenic potential.

본 연구에서는 토사자 에탄올 추출물의 항산화 효과와 항돌연변이 활성을 분석하였다. 토사자 에탄올 추출물은 100 ppm, 200 ppm의 농도에서 BHT보다 높은 항산화 활성을 나타내었다. 토사자 추출물은 본 연구에서 사용한 농도에서는 돌연변이를 유발하지 않았으며, 직접돌연변이원인 4-NQO에 의해 유발된 돌연변이를 90% 이상 억제시키는 효과를 보여주어 우수한 항돌연변이능을 가지고 있는 것으로 나타났다. 또한 토사자 에탄올 추출물은 폴리페놀 화합물을 다량 함유하고 있어 이들 항산화 물질이 토사자의 항산화 효과와 항돌연변이 활성에 영향을 주었을 것으로 사료되었다. 본 연구 결과 토사자 에탄올 추출물은 항산화 효과와 함께 돌연변이 유발을 억제하는 항돌연변이 활성을 가지는 것으로 나타나 천연항산화제 및 고부가가치의 기능성식품 신소재로서 이용될 가능성을 보여주었다.

Keywords

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