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Antioxidant and Anti-inflammatory Activities of Ethanol Extracts from Medicinal Herb Mixtures

단일 생약재 및 생약복합제 에탄올추출물의 항산화 및 항염증 활성

  • Lee, Sung-Gyu (Bio Research Institute, NUC Electronics Co. Ltd.) ;
  • Jeong, Hyun-Jin (Bio Research Institute, NUC Electronics Co. Ltd.) ;
  • Lee, Eun-Ju (Bio Research Institute, NUC Electronics Co. Ltd.) ;
  • Kim, Jong-Boo (Bio Research Institute, NUC Electronics Co. Ltd.) ;
  • Choi, Sang-Won (Department of Food Science and Nutrition, Catholic University of Daegu)
  • 이성규 ((주)엔유씨전자 바이오연구소) ;
  • 정현진 ((주)엔유씨전자 바이오연구소) ;
  • 이은주 ((주)엔유씨전자 바이오연구소) ;
  • 김종부 ((주)엔유씨전자 바이오연구소) ;
  • 최상원 (대구가톨릭대학교 식품영양학과)
  • Received : 2010.10.19
  • Accepted : 2010.12.28
  • Published : 2011.04.30

Abstract

In this study, antioxidant and anti-inflammatory effects of ethanol extracts from medicinal herb mixtures were investigated in vitro. Contents of total polyphenols in ethanol extracts from Houttuynia cordata Thunb. (HC), Carthamus tinctorius L. (CT), and MIX-2 (Houttuynia cordata Thunb., Acanthopanax gracilistylus Smith, Carthamus tinctorius L., Kalopanax pictus) were 58.98, 60.79 and 57.74 mg/g respectively. Radical scavenging activities of the ethanol extracts were examined using ${\alpha},{\alpha}$-diphenyl-${\beta}$-picrylhydrazyl radicals and 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) assay. Anti-inflammatory effects of ethanol extracts from medicinal herbs composites were examined using 5-lipoxygenase (5-LO), cyclooxygenase-2 (COX-2) and nitric oxide (NO) inhibition assays. The ethanol extracts from medicinal herb mixtures showed higher 5-LO and COX-2 inhibition activities than those from single medicinal herbs. The ethanol extracts from medicinal herb mixtures also showed strong anti-inflammatory activity through inhibition of NO production.

본 연구에서는 문헌을 통하여 항산화 혹은 항염증 활성을 가지는 6종의 생약재와 이들 생약재를 혼합하여 제조한 생약복합제의 항산화 및 항염증 활성을 측정하였다. 총 폴리페놀 함량은 어성초, 홍화, MIX-2 에탄올추출물이 각각 58.98, 60.79, 57.74 mg/g의 함량으로 다른 시료들 보다 높게 측정되었다. 또한 플라보노이드 함량도 어성초(HC), 홍화(CT), MIX-2에탄올추출물이 각각 36.86, 19.42, 14.74 mg/g으로 높게 측정되었다. 단일 생약재와 생약복합제 에탄올추출물의 라디칼 소거능을 측정한 결과 DPPH 라디칼의 RC50 값은 어성초, 홍화, MIX-2 에탄올추출물에서 각각 69.64, 50.70, $63.49{\mu}g/mL$로 추출물 가운데 우수한 DPPH 라디칼 소거능을 보였고, ABTS 라디칼의 $RC_{50}$ 값도 어성초, 홍화, MIX-2가 각각 24.06, 18.91, $41.61{\mu}g/mL$로 DPPH 라디칼 소거능과 유사한 경향을 보였다. 시료들의 항염증 효능을 측정하기 위해 5-LO 및 COX-2 효소 저해활성을 측정한 결과 단일 생약재 에탄올추출물보다 생약복합제 에탄올추출물이 5-LO와 COX-2 효소를 동시에 저해하는 효과가 증가되는 것으로 나타났다. 염증유발 효소 저해활성이 우수했던 생약복합제 에탄올추출물들의 NO 소거활성을 비교한 결과, MIX-2 에탄올추출물이 $50{\mu}g/mL$의 농도에서부터 유의적으로 NO의 생성을 저해하는 것을 확인하였다. 따라서 단일 생약재 보다는 생약복합제가 서로 혼합되면서 시너지 효과가 나타나는 것으로 생각되며 앞으로 명확한 기전에 대한 연구들이 지속된다면 기능성 식품 소재로서의 이용이 가능할 것으로 생각된다.

Keywords

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