Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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A Study on the Glucose-regulating Enzymes and Antioxidant Activities of Water Extracts from Medicinal Herbs

한약재의 물 추출물이 당대사 관련 효소와 항산화 활성에 관한 연구

  • Choe, Myeon (Dept. of Plant Biotechnology, Kangwon National University) ;
  • Kim, Dae-Jung (Dept. of Plant Biotechnology, Kangwon National University) ;
  • Lee, Hyeon-Ju (Dept. of Plant Biotechnology, Kangwon National University) ;
  • You, Jin-Kyoun (Dept. of Plant Biotechnology, Kangwon National University) ;
  • Seo, Dong-Joo (Dept. of Plant Biotechnology, Kangwon National University) ;
  • Lee, Joon-Hee (Division of Biotechnology, Kangwon National University) ;
  • Chung, Mi-Ja (The Nutraceutical Bio Brain Korea 21 Project Group, Kangwon National University)
  • 최면 (강원대학교 식물생명공학) ;
  • 김대중 (강원대학교 식물생명공학) ;
  • 이현주 (강원대학교 식물생명공학) ;
  • 유진균 (강원대학교 식물생명공학) ;
  • 서동주 (강원대학교 식물생명공학) ;
  • 이준희 (강원대학교 생명공학부) ;
  • 정미자 (강원대학교 BK21 사업단(뉴트라슈티컬바이오))
  • Published : 2008.05.31
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Abstract

The anti-diabetic effects of water extracts (WE) from medicinal herbs on hepatic glucose-regulating enzymes, such as glucokinase (GCK), pyruvate dehydrogenase (PDH), acetyl-CoA carboxylase (ACC) and ${\alpha}$-glucosidase, were studied using the cytosol fraction in liver and mitochondia fraction in heart of a type II diabetic animal (GK rat, Goto-Kakizaki). The free radical scavenging activity of water extracts by DPPH method was also tested. We found that free radical scavenging activity was strong in Corni fructu (CF), Mokdan Bark (MDB), Chenhwabon (CHB) and Sanyack (SY), while that of Backbocreng (BBR), Shuckgihwang (SGH) and Taecsa (TS) was lower. For GCK activity in cytosol of liver, CF and CHB had a more effective activity than other extracts. PDH activity in mitochondria fraction of heart was higher in all of the extracts, expect for the TS extract, than in the control. ACC activity in cytosol fraction of liver was significantly higher in the CF, CHB, SGH, TS and SY extracts than in the control. CF, BBR and MDB led to a decrease in the ${\alpha}$-glucosidase activity. Therefore, these results suggest that all of the extracts may be used as functional material in the development as anti-diabetic functional food and medicine.

본 연구에서는 제2형 당뇨병를 가진 GK 흰쥐(Goto-Kakizaki) 간에서 추출한 cytosol과 심장에서 추출한 mitochondria를 이용한 모델계에서 당대사 관련 효소인 glucokinase glucokinase(GCK), pyruvate dehydrogenase(PDH), acetyl-CoA carboxylase(ACC) 및 glucosidase 활성에 대한 한약재의 물 추출물의 항당뇨 효과를 연구하였다. 그리고 역시 그들의 물 추출물의 free radical 소거활성을 DPPH 방법으로 알아보았다. Free radical 소거활성은 산수유(CF), 목단피(MDB), 천화분(CHB) 그리고 산약(SY)의 물 추출물이 강했고 반면에 백목령(BBR), 숙지황(SGH)과 택사(TS)는 낮은 소거작용을 나타내었다. 간 cytosol의 GCK 활성은 산수유(CF)와 천화분(CHB)에서 다른 추출물보다 더 강했다. 심장미토콘드리아의 PDH 활성은 택사(TS)를 제외하고 모든 추출물에서 대조군과 비교하여 높았다. 간 cytosol의 ACC 활성은 대조군보다 산수유(CF), 천화분(CHB), 숙지황(SGH), 택사(TS) 그리고 산약(SY) 추출물에서 높았다. 산수유(CF), 백복령(BBR) 및 목단피(MDB) 추출물은 ${\alpha}$-glucosidase 활성 감소를 유도했다. 따라서 모든 추출물은 혈당 상승을 억제할 수 있는 항당뇨 기능성식품이나 약품 개발을 위한 기능성 천연 소재로 이용될 수 있을 가능성을 제시하였다.

Keywords

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