Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Protective Effect of Ethyl Acetate Fraction from Hibiscus Sabdariffa L. Extract against High Glucose-induced Oxidative Stress

고포도당으로 유도된 산화 스트레스에 대한 로젤 아세트산에틸 분획물의 신경세포 보호효과

  • Seung, Tae Wan (Division of Applied Life Science (BK21 plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Park, Sang Hyun (Division of Applied Life Science (BK21 plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Park, Seon Kyeong (Division of Applied Life Science (BK21 plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Ha, Jeong Su (Division of Applied Life Science (BK21 plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Lee, Du Sang (Division of Applied Life Science (BK21 plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Kang, Jin Yong (Division of Applied Life Science (BK21 plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Kim, Jong Min (Division of Applied Life Science (BK21 plus), Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Lee, Uk (Division of Special Purpose Tree, National Institute of Forest Science) ;
  • Heo, Ho Jin (Division of Applied Life Science (BK21 plus), Institute of Agriculture and Life Science, Gyeongsang National University)
  • 승태완 (경상대학교 응용생명과학부(BK21 plus).농업생명과학연구원) ;
  • 박상현 (경상대학교 응용생명과학부(BK21 plus).농업생명과학연구원) ;
  • 박선경 (경상대학교 응용생명과학부(BK21 plus).농업생명과학연구원) ;
  • 하정수 (경상대학교 응용생명과학부(BK21 plus).농업생명과학연구원) ;
  • 이두상 (경상대학교 응용생명과학부(BK21 plus).농업생명과학연구원) ;
  • 강진용 (경상대학교 응용생명과학부(BK21 plus).농업생명과학연구원) ;
  • 김종민 (경상대학교 응용생명과학부(BK21 plus).농업생명과학연구원) ;
  • 이욱 (국립산림과학원 특용자원연구과) ;
  • 허호진 (경상대학교 응용생명과학부(BK21 plus).농업생명과학연구원)
  • Received : 2016.03.31
  • Accepted : 2016.05.06
  • Published : 2016.06.30
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Abstract

To investigate the physiological effect of Hibiscus sabdariffa, in vitro antioxidant activities and neuroprotective effects against high glucose-induced oxidative stress were examined. The ethyl acetate fraction (EtOAc-Fr) from H. sabdariffa contained high total phenolic contents compared with other fractions but total anthocyanin contents were lower than 80% Ethanol extract showed the highest 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt radical scavenging activity and malondialdehyde inhibitory effect. Furthermore, the EtOAc-Fr decreased the intracellular reactive oxygen species level, and protected the neuron-like PC12 cells from high glucose-induced cytotoxicity. The EtOAc-Fr also presented inhibitory effects against acetylcholinesterase as an acetylcholine hydrolase enzyme. Finally, chlorogenic acids as main phenolics by high performance liquid chromatography analysis.

본 연구에서는 고포도당 조건에서 로젤의 산화방지 효과와 산화 손상에 대한 신경세포 보호효과를 검증하였다. 총 페놀 함량은 아세트산에틸 분획물(71.41 mg GAE/g)이 다른 분획물보다 높았으며, 이에 따라 아세트산에틸 분획물로 in vitro 산화방지 실험을 진행한 결과 상대적으로 우수한 ABTS 라디칼 소거활성과 지방질과산화물 생성 억제효과를 나타내었다. 신경세포에 고포도당으로 유발시킨 산화 스트레스에 대한 로젤 아세트산에틸 분획물은 산화 스트레스의 생성을 억제하고 신경세포 생존율을 향상 시켰다. 더불어 신경전달물질인 아세틸콜린 분해하는 아세틸콜린 에스터레이스의 억제효과를 보였으며, 마지막으로 HPLC 분석 결과 로젤 아세트산에틸 분획물에 존재하는 주요 페놀화합물은 클로로겐산인 것으로 판단되었다. 결국 클로로겐산을 함유하는 로젤 아세트산에틸 분획물은 우수한 산화방지 효과와 신경세포 보호효과 그리고 아세틸콜린 에스터레이스 억제 효과를 유도한 것으로 추정되며, 이를 통해 고포도당 상태에서 발생하는 당뇨성 퇴행성 신경질환과 같은 질병을 예방할 수 있는 고부가가치 소재로서의 활용가치가 있다고 판단된다.

Keywords

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