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

Society of Cosmetic Scientists of Korea (대한화장품학회)
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Studies on the Anti-acne Effect of Agrimonia pilosa Ledeb.

선학초 추출물의 항여드름균 효능 연구

  • Published : 2006.03.03
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Abstract

Agrimonia pilosa Ledeb. is a perennial plant, which naturally habitats in whole area of Korea, and where it is popularly used for the traditional remedies. In the present study, A. pilosa Ledeb. extract was prepared to determine the anti-acne effects and application possibility as a cosmetic resource. A pilosa Ledeb. was extracted with methanol and its anti-acne effect against Propionibacterium acnes was investigated via minimum inhibitory concentration (MIC) and paper disk diffusion method. The MIC of A. pilosa Ledeb. extract and triclosan was 0.05 mg/mL and 0.04 mg/mL, respectively. This implies that A. pilosa Ledeb. extract nay be an efficient anti-acne ingredient for cosmetics, considering that it is a crude extract. The paper disk diffusion assay showed that its anti-acne effect was similar to that of triclosan. Furthermore, A. pilosa Ledeb. extract effectively inhibited the growth of several aerobic microorganisms including Staphylococcus aureus. Finally, we examine the stability of the extract to temperature and pH. The extract was very stable to high temperatures ($70{\sim}121^{\circ}C$) and to pH ($pH 2{\sim}11$), suggesting its utilization for cosmetics.

본 연구는 우리나라의 야산이나 길가, 들판 등에 흔히 자라는 여러해살이 풀이며, 오래 전부터 민간요법 및 한방에 유용 한 약재로 사용되어 지고 있는 선학초(Agrimonia pilosa Ledeb.)를 이용하여 여드름 유발균에 대한 항균활성을 평가하고, 이를 토대로 항여드름 관련 화장품 소재를 개발하는데 그 목적이 있다. 선학초를 methanol로 추출한 후, 이 추출물을 여드름 유발균주인 P. acne를 이용하여 minimum inhibitory concentration (MIC) 및 paper disk diffusion assay로 항균 효과를 측정하였으며, 추출물에 대한 온도 및 pH 변화에 따른 안정성을 평가하였다. 추출물을 이용하여 P. acne에 대한 MIC 값은 0.005 mg/mL로 측정되었으며, 이는 대조군으로 사용한 항생제인 triclosan의 MIC 값(0.004 mg/mL)과 비교했을 때 시료가 선학초 전초에 대한 crude extract임을 고려하면 매우 항균활성이 높은 것으로 평가되었다. 추출물에 대한 paper disk diffusion assay를 수행한 결과, 대조군으로 사용한 triclosan 처럼 높은 활성을 나타내는 것으로 측정되었으며, Staphylococcus aureus를 비롯한 여러 종의 호기성 균주에도 선학초추출물은 항균활성이 우수한 것으로 평가되었다. 선학초 추출물의 온도, pH 안정성을 평가한 결과, 70, 80, 90, 100, $121^{\circ}C$ 등 다양한 온도 조건과 $pH 2{\sim}pH 11$의 변화에 있어서도 그 효능이 변하지 않고 안정된 상태로 유지되는 것으로 관찰되었다.

Keywords

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