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

Society of Cosmetic Scientists of Korea (대한화장품학회)
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Evaluation of Antioxidant Potential of Extract/Fractions of Equisetum arvense (I)

쇠뜨기 추출물의 항산화 작용에 관한 연구(I)

  • Park, Soo-Nam (Department of Fine Chemistry, College of Nature & Life Science, Seoul National University of Technology) ;
  • Yang, Hee-Jung (Department of Fine Chemistry, College of Nature & Life Science, Seoul National University of Technology)
  • 박수남 (서울산업대학교 자연생명과학대학 정밀화학과) ;
  • 양희정 (서울산업대학교 자연생명과학대학 정밀화학과)
  • Published : 2007.06.30
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Abstract

In this study, the antioxidative effects of Equisetum arvense extracts were investigated. The free radical (1,1 diphenyl-2-picrylhydrazyl, DPPH) scavenging activity ($FSC_{50}$) of extract/fractions of Equisetum arvense was in the order: 50 % ethanol extract ($182.04{\mu}g/mL$) < ethylacetate fraction ($54.50{\mu}g/mL$) < deglycosylated flavonoid aglycone fraction ($14.13{\mu}g/mL$). Reactive oxygen species (ROS) scavenging activities ($OSC_{50}$) of some Equisetum arvense extracts on ROS generated in $Fe^{3+}-EDTA/H_2O_2$ system were investigated using the luminol- dependent chemiluminescence assay. The order of ROS scavenging activity was deglycosylated flavonoid aglycone fraction ($OSC_{50}$, $3.54{\mu}g/mL$) < 50 % ethanol extract ($0.80{\mu}g/mL$) < ethylacetate fraction ($0.006{\mu}g/mL$). Ethylacetate fraction showed the most prominent scavenging activity. The protective effects of extract/fractions of Equisetum arvense on the rose-bengal sensitized photohemolysis of human erythrocytes were investigated. The ethanol extract (50%) suppressed photohemolysis in a concentration dependent manner, particularly deglycosylated aglycone extract exhibited the most prominent celluar protective effect ($\tau_{50}$, 161.10 min at $10{\mu}g/mL$). These results indicate that extract/fractions of Equisetum arvense can function as antioxidants in biological systems, particularly skin exposed to UV radiation by scavenging $^1O_2$ and other ROS, and protect cellular membranes against ROS.

본 연구에서는 쇠뜨기 추출물의 항산화능을 조사하였다. 추출물의 free radical (1,1-diphenyl-2-picrylhydrazyl, DPPH) 소거활성($FSC_{50}$)은 50% 에탄올 추출물($182.04{\mu}g/mL$) < ethylacetate 분획(54.50) < 당을 제거시킨 플라보노이드 aglycone 분획(14.13) 순으로 증가하였다. Luminol-의존성 화학발광법을 이용한 $Fe^{3+}-EDTA/H_2O_2$ 계에서 생성된 활성산소종(reactive oxygen species, ROS)에 대한 총항산화능은 당을 제거시킨 플라보노이드 aglycone 분획($OSC_{50}$, $3.54{\mu}g/mL$) < 50 % 에탄올 추출물(0.80) < ethylacetate 분획(0.006) 순으로 ethylacetate 분획에서 가장 큰 활성을 나타내었다. 쇠뜨기 추출물에 대하여 rose-bengal로 증감된 사람 적혈구의 광용혈에 대한 보호효과를 조사하였다. 50% 에탄올 추출물의 경우 농도 의존적($1{\sim}100{\mu}g/mL$)으로 광용혈을 억제하였다. 특히 ethylacetate 분획에서 당을 제거시킨 aglycone 추출물은 $10{\mu}g/mL$ 농도에서 $\tau_{50}$이 161.10min으로 매우 큰 세포보호 활성을 나타내었다. 이상의 결과들은 쇠뜨기 추출물이 $^1O_2$ 혹은 다른 ROS를 소광시키거나 소거함으로써 그리고 ROS에 대항하여 세포막을 보호함으로써 생체계, 특히 태양 자외선에 노출된 피부에서 항산화제로서 작용할 수 있음을 가리킨다.

Keywords

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