Journal of the Society of Cosmetic Scientists of Korea (대한화장품학회지)

Society of Cosmetic Scientists of Korea (대한화장품학회)
권호 표지

Moisturizing and Anti-oxidation Effect of Astragalus membranaceus Root Extract

황기추출물의 보습 및 항산화 효과

  • 정택규 ((주)사임당화장품 기술연구소) ;
  • 김미진 ((주)사임당화장품 기술연구소) ;
  • 임경란 ((주)사임당화장품 기술연구소) ;
  • 윤경섭 ((주)사임당화장품 기술연구소)
  • Published : 2006.09.30
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Abstract

We investigated the effect of moisturizing and anti-oxidation of Astragalus membranaceus (Astragali Radix) root extract with respective to growing districts and extract methods for the purpose of development of cosmetic ingredients. Astragalii Radix was collected in Jecheon, Jeongseon, Taebaek, and Yeongju in Korea and China as growing districts. Formononetin was determinated by HPLC method as one of the various active agents in Astragalus membranaceus root extract. The 75% ethanol extract demonstrated to be more effective than $H_2O$-extracted one for a scavenging activities to DPPH radicals and reactive oxygens. The 75% ethanol extract showed $IC_{50}$ (50% scavenging concentration) of 2.162 mg/mL and 2.981 mg/mL in case of free radical scavenging activity test and reactive oxygen scavenging activity test, respectively Especially, free radical scavenging activity of isoflavonoids isolated from ethylacetate fraction was similar to scavenging activity of genistein. Astragalus membranaceus root extract of Jecheon district by sonicating extraction method was more effective in skin hydration compared with others.

화장품 원료로서 황기추출물을 산지 및 추출방법에 따라서 추출한 후, 보습효과 및 항산화효과를 시험하였다. 황기는 산지별로서 제천산, 정선산, 영주산, 태백산 및 중국산 1년 근을 사용하였다. 황기추출물에 포함된 유효성분의 한 지표성분으로서 선정한 formononetin을 HPLC 분석법을 이용하여 분석하였다. 항산화능 평가로서 자유라디칼 및 활성산소 소거효과의 경우에 75% 에탄을 수용액을 이용한 황기추출물은 정제수를 이용한 황기추출물과 비교하여 더 우수한 것으로 나타났다. 75% 에탄을 추출물의 자유라디칼 소거효과는 50% 소거효율에 대한 농도($IC_{50}$)가 2.162 mg/mL이었으며, 활성산소 소거효과의 경우는 $IC_{50}$ 값이 2.981 mg/mL로 나타났다. 특히 에틸아세테이트 분획층에 포함되어 있는 이소플라보노이드는 항산화제로 알려진 제니스테인과 유사한 자유라디칼 소거효과를 나타냈다. 황기추출물의 보습효과는 제천산 황기추출물이 가장 양호하였으며, 초음파추출을 이용한 황기추출물이 상대적으로 양호하였다.

Keywords

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