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- 저자 : 양현갑 ( Hyun Gab Yang ) (검색결과 3 건)
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사자발쑥 추출물의 피부 흡수 증진을 위한 에토좀 제형에 관한 연구
양현갑 ( Hyun Gab Yang ),김혜진 ( Hye Jin Kim ),김해수 ( Hae Soo Kim ),박수남 ( Soo Nam Park ) 한국공업화학회 2013 공업화학 Vol.24 No.2
In our previous studies, the antioxidant, anti-aging, and antibacterial activities of Artemisia princeps Pampnini (A. princeps Pamp.) extract were reported. In this study, ethosome formulations for the enhanced transdermal delivery of A. princeps Pamp. extract were prepared. The particle size, loading efficiency and skin permeation of them were evaluated. The ethosome loaded with 0.06% ethyl acetate fraction of A. princeps Pamp. extract was more stable and maintained the constant particle size for 3 weeks after being prepared. The particle size of ethosome containing 0.06% ethyl acetate fraction was 287.05±0.25nm and the loading efficiency was 51.96±0.01%. The ethosome formulation exhibited the greater enhancement of skin permeation than of general liposome and 20% ethanol solution in skin permeability experiments.
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양현갑 ( Hyun Gab Yang ),김혜진 ( Hye Jin Kim ),김해수 ( Hae Soo Kim ),박수남 ( Soo Nam Park ) 한국미생물생명공학회(구 한국산업미생물학회) 2012 한국미생물·생명공학회지 Vol.40 No.3
In the present study, the antioxidative and antibacterial activities of Artemisia princeps Pampanini (A. princeps Pamp.) extract were investigated. The ethyl acetate fraction of A. princeps Pamp. showed the most prominent free radical (1,1-diphenyl-2-picrylhydrazyl, DPPH) scavenging activity (FSC50 = 12.27 μg/mL). Reactive oxygen species (ROS) scavenging activities (OSC50) of A. princeps Pamp. extract on Fe3+-EDTA/H2O2 systems were investigated using a luminol-dependent chemiluminescence assay. The ethyl acetate fraction of the extract (OSC50 = 0.33 μg/mL) had a 5 times greater ROS scavenging activity than L-ascorbic acid(1.50 μg/mL), known as a water soluble antioxidant. The cellular protective effects of fractions of A. princeps Pamp. on the rose-bengal sensitized photohemolysis of human erythrocytes were examined. The aglycone fraction of extracts suppressed photohemolysis in a concentration dependent manner. The inhibitory effects of A. princeps Pamp. extract on tyrosinase were investigated to assess their whitening efficiency. The ethyl acetate fraction demonstrated a 7 times higher tyrosinase inhibitory effect (IC50 = 29.20 μg/mL) than albutin, known as a whitening agent. The antibacterial activity of ethyl acetate fractions against various normal skin flora were measured. The results showed that the antibacterial activity of the fraction was the highest on Staphylococcus aureus, Bacillus subtilis, and Propionibacterium acnes. Antioxidant substances were isolated and purified from the ethyl acetate fractions. Eupatilin and jaceosidin were identified. These results indicate that the extract/fractions of A. princeps Pamp. can function as antioxidant and/or antibacterial agents for the skin.
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김민지 ( Min Ji Kim ),양현갑 ( Hyun Gab Yang ),박수남 ( Soo Nam Park ) 대한화장품학회 2011 대한화장품학회지 Vol.37 No.2
본 연구에서는 큰뱀무 추출물의 항산화 활성 및 미백과 주름에 관련된 tyroinase, elastase 저해 효과에 관한 조사를 수행하였다. 추출물의 free radical (1,1-diphenyl-2-picrylhydrazyl, DPPH) 소거활성(FSC<sub>50</sub>)은 ethyl acetate 분획에서 4.70 μg/mL로 측정되었다. Luminol-의존성 화학발광법을 이용한 Fe<sup>3+</sup>-EDTA/H<sub>2</sub>O<sub>2</sub> 계에서 생성된 활성산소종(reactive oxygen species, ROS)에 대한 큰뱀무 추출물의 총 항산화능은 ethyl acetate 분획 0.22 μg/mL로, ethyl acetate 분획에서 가장 큰 활성을 나타내었다. 큰뱀무 추출물에 대하여 rose-bengal로 증감된 사람 적혈구의 광용혈에 대한 억제 효과를 측정하였다. 큰뱀무 추출물의 경우 1 ~ 25 μg/mL의 농도에서 광용혈을 억제하였다. 특히 ethyl acetate 분획은 10 μg/mL 농도에서 τ<sub>50</sub>이 416.20 min으로 매우 큰 세포보호 효과를 나타내었다. 미백 효과측정으로는 tyrosinase의 활성 저해 효과(IC<sub>50</sub>)를 측정하였는데 ethyl acetate 분획에서 95.23 μg/mL로 나타났으며 elastase의 활성 저해 효과(IC<sub>50</sub>)는 50 % 에탄올 추출물과 ethyl acetate 분획이 각각 6.27, 4.31 μg/mL로 나타났다. 이상의 결과들은 큰뱀무 추출물이 <sup>1</sup>O<sub>2</sub> 혹은 다른 ROS를 소광시키거나 소거함으로써, 그리고 ROS에 대항하여 세포막을 보호함으로써 생체계, 특히 태양 자외선에 노출된 피부에서 항산화제로서 작용할 수 있음을 가리킨다. 또한 큰뱀무 추출물의 ethyl acetate 분획의 tyrosinase, elastase 저해활성으로부터 항산화 및 항노화 화장품 소재로서의 응용 가능성을 확인하였다. In this study, antioxidative effects and inhibitory effects of Geum aleppicum Jacq. extracts on tyrosinase and elastase were investigated. The ethyl acetate fraction of G. aleppicum Jacq. extract (4.70 μg/mL) showed the most prominent free radical (1,1-diphenyl-2-picrylhydrazyl, DPPH) scavenging activity (FSC<sub>50</sub>). Reactive oxygen species (ROS) scavenging activities (OSC<sub>50</sub>) of some G. aleppicum Jacq. extracts on ROS generated in Fe<sup>3+</sup>-EDTA/ H<sub>2</sub>O<sub>2</sub> system were investigated using the luminol-dependent chemiluminescence assay. The ethyl acetate fraction showed the most prominent ROS scavenging activity (0.22 μg/mL). The protective effects of extract/fraction of G. aleppicum Jacq. against the rose-bengal sensitized photohemolysis of human erythrocytes were investigated. The G. aleppicum Jacq. extracts suppressed photohemolysis in a concentration dependent manner (1 ~ 25 μg/mL), particularly the ethyl acetate fraction exhibited the most prominent celluar protective effect (τ<sub>50</sub>, 416.20 min at 10 μg/mL). The inhibitory effect of G. aleppicum Jacq. extracts on tyrosinase and elastase were investigated to assess their whitening and anti-winkle efficacy. The half maximal inhibitory concentration (IC<sub>50</sub>) of the ethyl acetate fraction on tyrosinase was 95.23 μg/mL. The IC<sub>50</sub> of 50 % ethanol extract and the ethyl acetate fraction on elastase were 6.27 μg/mL and 4.31 μg/mL, respectively. These results indicate that extract/fraction of G. aleppicum Jacq. can function as antioxidants in biological systems, particularly skin exposed to UV radiation by scavenging <sup>1</sup>O<sub>2</sub> and other ROS, and protect cellular membranes against ROS. Especially the ethyl acetate fraction of G. aleppicum Jacq. extracts could be applicable to new functional cosmetics for antioxidant, antiaging.
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