Applied Chemistry for Engineering, Vol.23, No.2, 222-227, April, 2012
피부 흡수 증진을 위한 마디풀 추출물 함유 나노에멀젼 제조에 관한 연구
Preparation of Nano-emulsion Containing Polygonum aviculare Extract for Enhanced Transdermal Delivery
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초록
본 연구에서는 마디풀 추출물의 에틸아세테이트 분획을 함유한 안정한 나노에멀젼을 제조하였고, 이 나노에멀젼의 피부 흡수 증진 효과를 평가하였다. 나노에멀젼은 균질기(homogenizer) 처리 후 고압유화기(microfluidizer)를 이용한 고에너지법으로 제조하였다. 마디풀 추출물의 에틸아세테이트 분획을 함유한 나노에멀젼의 입자 크기와 포집효율을 측정하였다. 평균 입자 크기는 238 nm이었으며 포집 효율은 98% 이상으로 나타났다. 나노에멀젼은 단분산의 입도 분포를 나타냈으며 고압 유화 과정을 거치지 않은 일반 에멀젼보다도 더 안정함을 보여주었다. Franz diffusion cell을 이용하여 마디풀 추출물의 에틸아세테이트 분획을 함유한 나노에멀젼의 피부 투과 실험을 수행하였다. 에틸아세테이트 분획 함유 나노에멀젼은 대조군인 1,3-butylene glycol 용액에서 보다 피부 흡수 및 투과량이 더 큰 것으로 나타났다. 이상의 연구 결과들은 항산화 및 항노화 활성이 큰 마디풀 추출물의 에틸아세테이트 분획을 함유한 나노에멀젼이 안정성 및 피부 투과력이 우수함을 시사한다.
In this study, nano-emulsion containing ethyl acetate fraction of Polygonum aviculare (P. aviculare) extract was prepared and skin permeability of the nano-emulsion was evaluated. Nano-emulsion was prepared using homogenizer and microfluidizer by the high-energy method. The droplet size and loading efficiency of nano-emulsion containing ethyl acetate fraction of P. aviculare extract were determined. The mean droplet size was 238 nm and the loading efficiency was more than 98%. The size distribution of nano-emulsion was a monodispersed form and nano-emulsion was more stable than that of using typical emulsion without using the microfluidizer. The in vitro skin permeation study of nano-emulsion containing ethyl acetate fraction of P. aviculare extract was carried out using Franz diffusion cells. Compared to 1,3-butylene glycol, nano-emulsion showed greater values of cumulative permeation of ethyl acetate fraction from P. aviculare extract. These results indicate that the stability and skin permeability of nano-emulsion containing ethyl acetate fraction of P. aviculare exerting anti-oxidative and anti-aging activities were enhanced.
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