Journal of Nutrition and Health

  • 제46권4호
  • /
  • Pages.315-323
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  • 2013
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  • 2288-3886(pISSN)
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  • 2288-3959(eISSN)
한국영양학회 (The Korean Nutrition Society)
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청미래덩굴 잎 및 뿌리 추출물의 항산화, ${\alpha}$-Glucosidase 억제 및 항염증 활성비교

Comparison of antioxidant, ${\alpha}$-glucosidase inhibition and anti-inflammatory activities of the leaf and root extracts of Smilax china L.

  • 김경곤 (강원대학교 생명건강공학과) ;
  • 강윤환 (강원대학교 강원웰빙특산물산업화지역혁신센터) ;
  • 김대중 (강원대학교 강원웰빙특산물산업화지역혁신센터) ;
  • 김태우 (강원대학교 강원웰빙특산물산업화지역혁신센터) ;
  • 최면 (강원대학교 생명건강공학과)
  • Kim, Kyoung Kon (Department of Bio-Health Technology, Kangwon National University) ;
  • Kang, Yun Hwan (Well-being Bioproducts RIC, Kangwon National University) ;
  • Kim, Dae Jung (Well-being Bioproducts RIC, Kangwon National University) ;
  • Kim, Tae Woo (Well-being Bioproducts RIC, Kangwon National University) ;
  • Choe, Myeon (Department of Bio-Health Technology, Kangwon National University)
  • 투고 : 2013.07.15
  • 심사 : 2013.08.19
  • 발행 : 2013.08.31
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초록

본 연구에서 청미래덩굴 잎과 뿌리의 물추출물을 이용하여 총 폴리페놀과 플라보노이드의 함량을 측정한 결과 잎 추출물에서 더 많은 함량이 확인되었으며, DPPH 및 ABTS radical 소거능, 환원력 측정을 통한 항산화 활성을 비교한 결과도 폴리페놀과 플라보노이드함량 측정 결과와 마찬가지로 잎에서 높은 활성을 명확하게 확인할 수 있었다. 그리고 청미래덩굴 추출물의 항당뇨 효능에 대한 최초의 시도로서 ${\alpha}$-glucosidase 활성억제능을 측정한 결과 뿌리추출물에서는 효소의 억제력을 확인할 수 없었지만 잎 추출물에서는 농도 및 반응시간의 증가에 따라 억제력이 증가하여 물 추출물 상태에서 1 mg/mL 기준으로 acarbose의 ${\alpha}$-glucosidase 활성 억제능과 비교하여 71.8%의 활성을 관찰할 수 있었다. 또한 당뇨와 염증의 관련성이 대두되는 최근의 연구 상황에서 청미래덩굴 잎 추출물의 IL-$1{\beta}$, IL-6, iNOS, COX-2의 mRNA 발현 억제작용을 확인함으로써 염증반응의 개선 가능성도 제시할 수 있었다. 결과적으로 청미래덩굴 잎 추출물의 항산화능, ${\alpha}$-glucosidase 활성억제능 및 항염증효능을 확인함으로써 neutraceuticals 소재로서의 개발가능성을 증명하였고 추가 연구의 필요성을 제시하였다.

This study was conducted in order to compare the biological activities of leaf and root water extracts of Smilax china L. (SC) by measuring the total polyphenol and flavonoid contents, anti-oxidant activity, inhibitory effect on ${\alpha}$-glucosidase, and anti-inflammatory gene expression. The total polyphenol and flavonoid contents of SC leaf (SCLE) and root (SCRE) water extracts were 127.93 mg GAE/g and 39.50 mg GAE/g and 41.99 mg QE/g and 1.25 mg QE/g, respectively. The anti-oxidative activities of SCLE and SCRE were measured using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radical scavenging activity assay and reducing power assay. Both SCLE and SCRE scavenged radicals in a concentration-dependent manner, and SCLE showed stronger radical scavenging activity and reducing power than SCRE; however, both SCLE and SCRE exhibited lower activities than ascorbic acid. Compared to the anti-diabetic drug acarbose, which was used as a positive control, SCLE and SCRE exhibited low ${\alpha}$-glucosidase inhibition activities; nevertheless, the activity of SCLE was 3.7 fold higher than that of SCRE. Finally, SCLE caused significantly decreased expression of the LPS-induced cytokines, iNOS, and COX-2 mRNA in RAW264.7 cells, indicating anti-inflammatory activity. These results indicate that SCLE might be a potential candidate as an anti-oxidant, anti-diabetic, and anti-inflammatory agent.

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