황금(黃芩)의 에탄올추출물에 의한 화장품 방부효과

Preservation of Cosmetics by Ethanol Extract of Scutellaria baicalensis $G_{EORGE}$

  • 황신혜 (경희대학교 공과대학 화학공학과, 그린에너지 센터, 산학협력기술연구원) ;
  • 박창호 (경희대학교 공과대학 화학공학과, 그린에너지 센터, 산학협력기술연구원)
  • Hwang, Shin-Hye (Department of Chemical Engineering, Kyung Hee University) ;
  • Park, Chang-Ho (Department of Chemical Engineering, Kyung Hee University)
  • 발행 : 2009.08.29

초록

Skin toner와 skin lotion의 두 가지 화장품 formulation에 기존의 파라벤류 방부제 대신 황금 (黃芩) 추출물 (1.0 wt%)을 첨가하고 Staphylococcus aureus (ATCC 25923), Pseudomonas aeruginosa (ATCC 9027) 및 Candida albicans (ATCC 10231) 균주를 접종하였을 때 이 균주들은 7일 이내에 99.9% 이상의 사멸율을 보여 황금추출물이 CTFA기준을 만족하는 항균력이 있음을 확인하였다. 다만 skin lotion에 접종된 Candida albicans의 경우 사멸율은 CTFA기준에 약간 미달하는 99.8%이었다. 또한 황금추출물의 농도가 1.0 wt% 이하일 때 균주의 생존율은 그람 양성균인 P. aeruginosa가 가장 높고 그람 음성균인 P. aeruginosa가 가장 낮았다. 전계방출형 주사전자현미경(FE-SEM)을 이용한 세포형태변화 관찰 결과 황금추출물이 P. aeruginosa에 대하여 더 큰 방부력을 갖는 것은 이 균주의 세포막이 황금추출물에 의해 더 심하게 손상되기 때문으로 사료된다. 고농도의 황금추출물이 더 높은 항산화 효과를 나타냈으며 1,000 ppm에서 80%정도의 SOD-유사활성을 나타내었다.

Ethanol extract (1.0 wt%) of Scutellaria baicalensis $G_{EORGE}$ practically satisfied CTFA (The cosmetics, Toiletry, and Fragrance Association) standard in its antimicrobial activity against Staphylococcus aureus, Pseudomonas aeruginosa and Candida albicans which were inoculated in skin toner and skin lotion. At concentrations of the extract less than 1.0 wt% the survival rate was the best for S. aureus and the worst for P. aeruginosa. The antimicrobial effect seems to be due to the damage to the bacterial cell wall as evidenced by the images of a Field Emission-Scanning Electron Microscope. The extract also showed a high anti-oxidant effect, and superoxide dismutase (SOD)-like activity reached 80% at 1,000 ppm. These findings suggest that the extract of Scutellaria baicalensis $G_{EORGE}$ is applicable to cosmetics as a natural preservative and an anti-oxidant.

키워드

참고문헌

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