Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Antioxidant Activities and Whitening Effect of the Mulberry (Morus alba L.) Root Bark Extracts

상백피 추출물의 항산화 활성 및 미백효과

  • Jee, Sun-Ok (Department of Cosmetic Science, Joongbu University)
  • 지선옥 (중부대학교 화장품과학과)
  • Published : 2009.04.30
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Abstract

This study was performed to investigate the antioxidant activities and the whitening effect of mulberry (Morus alba L.) root bark extracts. The antioxidant activities of water and 70% ethanol extracts of mulberry root bark were 65.8% and 87.0% in the DPPH assay at $1,000\;{\mu}g/ml$ ; 89.3% and 77.1% in the ABTS assay at $1,000\;{\mu}g/ml$. Xanthine oxidase inhibition of water and 70% ethanol extracts were 100% and 96.2% at $1,000\;{\mu}g/ml$. Nitric oxide radical inhibition of water and 70% ethanol extracts showed 43.5% and 53.0% at $500\;{\mu}g/ml$, and it was similar to the BHA effect(43.8%). Tyrosinase inhibitory activities of water and 70% ethanol extracts were 79.6% and 93.5% at $1,000\;{\mu}g/ml$. These results confirm that mulberry root bark has the great potential to be a cosmeceutical ingredient with a natural antioxidant and a skin-whitening effect.

본 연구는 상백피 추출물의 화장품 약리활성인 항산화 활성과 미백 효과를 탐색하기 위해 열수추출물과 에탄올추출물을 사용하여 전자공여능, ABTS, xanthine oxidase 저해활성, nitric oxide radical 소거능 및 tyrosinase 저해 활성을 측정하였다. 상백피 추출물의 전자공여능 측정결과 $1,000\;{\mu}g/ml$에서 열수추출물은 65.8%, 에탄올추출물은 87%의 DPPH radical 소거능을 보였다. ABTS 라디칼 소거능은 $1,000\;{\mu}g/ml$에서 열수추출물은 89.3%, 에탄올추출물은 77.1%로 높은 소거능을 보였다. Xanthine oxide 저해활성은 $1,000\;{\mu}g/ml$에서 열수추출물은 100%, 에탄올추출물은 96.2%를 보여 높은 항산화 효과를 나타내었다. NO 소거능은 $500\;{\mu}g/ml$에서 열수추출물은 43.5%, 에탄올추출물은 53%를 나타내었는데 이는 같은 농도에서 대조구인 BHA의 43.8%와 유사하였다. Tyrosinase 저해활성은 $1,000\;{\mu}g/ml$에서 열수추출물은 79.6%, 에탄올추출물은 93.5%로 나타나 대조구인 비타민 C와 유사한 활성을 보여 미백효과가 우수하였다. 모든 실험에서 활성정도가 시료 농도가 증가함에 따라 유의적으로 증가하는 경향이었으며, ABTS 저해활성을 제외하고 대부분의 실험에서 에탄올추출물이 열수추출물에 비해 다소 높은 활성을 보였다.

Keywords

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