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Physiological activities of leaf extract of Lonicera morrowii A.Gray, a plant native to Ulleungdo

울릉도 자생식물인 섬괴불나무(Lonicera morrowii A.Gray) 잎 추출물의 생리활성

  • Lee, Eun-Ho (School of Food science & Biotechnology, Kyungpook National University) ;
  • Park, Hye-Jin (School of Food science & Biotechnology, Kyungpook National University) ;
  • Hong, Eun-Jin (School of Food science & Biotechnology, Kyungpook National University) ;
  • Akhmadjon, Sultanov (School of Food science & Biotechnology, Kyungpook National University) ;
  • Kim, Byung-Oh (School of Food science & Biotechnology, Kyungpook National University) ;
  • Jung, Hee-Young (School of Applied Biosciences, Kyungpook National University) ;
  • Kang, In-Kyu (Department of Horticultural Science, Kyungpook National University) ;
  • Cho, Young-Je (School of Food science & Biotechnology, Kyungpook National University)
  • Received : 2020.10.15
  • Accepted : 2020.11.18
  • Published : 2020.12.31

Abstract

This study was performed to investigate total phenolic contents, anti-oxidant, biological disease-related enzyme inhibitory, and anti-microbial effects of extracts of Lonicera morrowii leaves prepared with water and 40% ethanol. Anti-oxidative activities of the extracts increased in a dose-dependent manner and were very high even at low phenolic concentration. At phenolic concentrations ranging between 50 and 200 ㎍/mL, the water and ethanol extracts inhibited 39.34-76.35 and 47.53-99.83% of xanthine oxidase activity, 30.21-79.06, and 59.40-87.14% of angiotensin converting enzyme activity, and 59.81-80.35 and 36.06-63.58% of α-glucosidase activity, respectively. All inhibitory effect were increased in a dose-dependent manner. In the paper disc agar diffusion assay against seven microbes, L. morrowii extracts had anti-bacteria activities against Helicobacter pylori, Propionibacterium acne but no effect against other bacteria. These results indicate that the extracts from L. morrowii leaves have the possibility to be developed as a physiologically functional source for prevention of adult diseases.

본 연구에서는 섬괴불나무 잎으로부터 phenol성 화합물의 생리활성 탐색을 통하여 기능성 소재로 활용 가능성을 살펴보았다. 인체에 무해한 용매인 열수와 ethanol로 추출 했을 때 열수는 3.53 mg/g, 40% ethanol은 2.82 mg/g의 TPC를 나타내었으며, 추출물을 이용하여 항산화 활성, xanthine oxidase (XOase), angiotensin converting enzyme (ACE), α-glucosidase 억제효과 및 항균 활성을 검정하였다. 그 결과 섬괴불나무 잎의 열수와 ethanol 추출물 50-200 ㎍/mL TPC에서 농도의존적으로 DPPH 유리라디칼 소거활성 및 PF가 증가하는 경향을 보였고, 50 ㎍/mL의 저농도에서도 모두 매우 높은 활성을 나타내었다. XOase 저해효과에서는 200 ㎍/mL TPC에서 열수와 ethanol 추출물이 각각 76.35, 99.83%의 높은 저해효과 나타냈으며, ACE 저해효과 또한 200 ㎍/mL TPC에서 열수와 ethanol 추출물 각각 79.06, 87.14%의 저해효과를 확인하였다. α-Glucosidase 저해효과를 측정한 결과 200 ㎍/mL TPC에서 열수와 ethanol 추출물 각각 80.45, 63.58%의 저해효과를 보였다. 생육저해환으로 항균활성을 측정 결과 열수 추출물 200 ㎍/100 μL TPC에서 H. pylori, P. acne균에 대해 각각 11.5, 18.5 mm의 clear zone을 형성 하였고, ethanol 추출물 200 ㎍/100 μL 농도에서는 P. acne균에 대해 10 mm의 clear zone을 형성하였다. 따라서 본 연구를 통하여 섬괴불나무 잎 추출물의 항산화 활성, xanthine oxidase (XOase), angiotensin converting enzyme (ACE), α-glucosidase 억제효과 및 항균 활성이 있다고 판단되었다.

Keywords

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