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Antioxidant Activities of Phenolic Compounds from Medicinal Plants (Hibiscus esculentus, Cirsium japonicum, Zizania latifolia and Kalopanax pictus)

약용식물(오크라, 엉컹퀴, 엄나무, 줄풀) 유래 페놀성 물질의 항산화 활성

  • Choi, Jin-Young (School of Food science & Biotechnology/Food & Bio-Industry Research Institute, Kyungpook National University) ;
  • Jo, Min-Kyeong (School of Food science & Biotechnology/Food & Bio-Industry Research Institute, Kyungpook National University) ;
  • Goo, Young-Mi (School of Food science & Biotechnology/Food & Bio-Industry Research Institute, Kyungpook National University) ;
  • Kim, Hyun-Kyung (School of Food science & Biotechnology/Food & Bio-Industry Research Institute, Kyungpook National University) ;
  • Shin, Jin-Won (School of Food science & Biotechnology/Food & Bio-Industry Research Institute, Kyungpook National University) ;
  • Kim, Dong-Yeong (School of Food science & Biotechnology/Food & Bio-Industry Research Institute, Kyungpook National University) ;
  • Kim, Hye-Jin (School of Food science & Biotechnology/Food & Bio-Industry Research Institute, Kyungpook National University) ;
  • Lee, Eun-Ho (School of Food science & Biotechnology/Food & Bio-Industry Research Institute, Kyungpook National University) ;
  • Kim, Na-Hyun (School of Food science & Biotechnology/Food & Bio-Industry Research Institute, Kyungpook National University) ;
  • Cho, Young-Je (School of Food science & Biotechnology/Food & Bio-Industry Research Institute, Kyungpook National University)
  • 최진영 (경북대학교 식품공학부/식품생물산업연구소) ;
  • 조민경 (경북대학교 식품공학부/식품생물산업연구소) ;
  • 구영미 (경북대학교 식품공학부/식품생물산업연구소) ;
  • 김현경 (경북대학교 식품공학부/식품생물산업연구소) ;
  • 신진원 (경북대학교 식품공학부/식품생물산업연구소) ;
  • 김동영 (경북대학교 식품공학부/식품생물산업연구소) ;
  • 김혜진 (경북대학교 식품공학부/식품생물산업연구소) ;
  • 이은호 (경북대학교 식품공학부/식품생물산업연구소) ;
  • 김나현 (경북대학교 식품공학부/식품생물산업연구소) ;
  • 조영제 (경북대학교 식품공학부/식품생물산업연구소)
  • Received : 2015.12.07
  • Accepted : 2015.12.18
  • Published : 2015.12.30

Abstract

In this study, the antioxidant activity of water and ethanol extracts from Hibiscus esculentus, Cirsium japonicum, Zizania latifolia and Kalopanax pictus for functional food source were examined. The optimal conditions for phenolic compounds extraction from medicinal plants were at 50% ethanol with Hibiscus esculentus and Cirsium japonicum var. ussuriense, at 40% ethanol with Kalopanax pictus and at 60% ethanol with Zizania latifolia. The total phenolic contents from the extracts of medical plants were determined to be 2.72~34.15 mg/g in the water extracts and 2.83~34.23 mg/g in the ethanol extracts. The electron-donating abilities (EDA) of the water and ethanol extracts were both above 74% at the low concentration of $50{\mu}g/mL$. The ABTS radical-cation decolorization was above 88% at $100{\mu}g/mL$ concentration in all the extracts of various medicinal plants. The antioxidant protection factor (PF) in the water and ethanol extracts of the Cirsium japonicum var. ussuriense extracts was $1.73{\pm}0.02PF$ and $1.76{\pm}0.01PF$ at $50{\mu}g/mL$ concentration respectively, and was higher than those of the other medicinal-plant extracts. The TBARs inhibition rates of all the medicinal-plant extracts, were above 80% at the $50{\mu}g/mL$ concentration except Hibiscus esculentus. These results confirmed that the various oriental medicinal plants (Hibiscus esculentus, Cirsium japonicum var. ussuriense, Kalopanax pictus and Zizania latifolia) that were included in this study are useful anti-oxidant and functional-food resources.

안전한 천연물을 이용한 천연항산화제 개발 연구의 일환으로, 오크라, 엉컹퀴, 엄나무 및 줄풀 등 4종의 천연 약용식물 추출물의 항산화 활성을 측정해보았다. 추출물의 총 phenolic compounds 함량은 오크라와 엉컹퀴는 50% ethanol, 엄나무는 40% ethanol, 줄풀은 60% ethanol에서 최대용출을 나타내었으며, water 추출물에서 2.72~34.15 mg/g, ethanol 추출물에서 2.83~34.23 mg/g의 용출율을 나타내었다. 4종류 약용식물 water과 ethanol 추출물의 DPPH radical 소거능은 $50{\mu}g/mL$의 저농도에서 모두 74% 이상의 높은 소거활성을 나타내었다. ABTS radical cation decolorization을 측정한 결과, 4종의 약용식물 water 추출물과 ethanol 추출물 $100{\mu}g/mL$의 농도에서 모두 88% 이상의 높은 저해율을 나타내었다. 지용성 물질에 대한 항산화 효과를 측정하기 위해 antioxidant protection factor(PF)를 측정한 결과, 엉컹퀴 water과 ethanol 추출물 $50{\ddot{I}}g/mL$의 저 농도에서 각각 1.73과 1.76 PF로 다른 약용식물 보다 높은 항산화효과를 나타내었다. TBARs 생성 억제율을 측정한 결과 오크라를 제외한 3종의 약용식물 추출물 $50{\mu}g/mL$ phenolic 농도에서 80% 이상의 생성억제 효과를 나타내었다. 이러한 결과에 따라 다양한 약용식물 추출물이 항산화 및 기능성 식품 소재로 활용이 가능하다고 판단되었다.

Keywords

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