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

Society of Cosmetic Scientists of Korea (대한화장품학회)
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Antibacterial, Antioxidative Activity and Component Analysis of Pinus koraiensis Leaf Extracts

잣나무 잎 추출물의 항균 및 항산화 활성과 성분분석

  • Kim, Jung-Eun (Department of Fine Chemistry, College of Nature and Life Science, Seoul National University of Science and Technology) ;
  • Kim, Woo-Yeon (Seoul Science High School) ;
  • Kim, Ji-Wook (Seoul Science High School) ;
  • Park, Hyun-Soo (Seoul Science High School) ;
  • Lee, Seung-Hoon (Seoul Science High School) ;
  • Lee, Soon-Young (Seoul Science High School) ;
  • Kim, Min-Ji (Department of Fine Chemistry, College of Nature and Life Science, Seoul National University of Science and Technology) ;
  • Kim, A-Reum (Department of Fine Chemistry, College of Nature and Life Science, Seoul National University of Science and Technology) ;
  • Park, Soo-Nam (Department of Fine Chemistry, College of Nature and Life Science, Seoul National University of Science and Technology)
  • 김정은 (서울과학기술대학교 자연생명과학대학 정밀화학과) ;
  • 김우연 (서울과학고등학교) ;
  • 김지욱 (서울과학고등학교) ;
  • 박현수 (서울과학고등학교) ;
  • 이승훈 (서울과학고등학교) ;
  • 이순영 (서울과학고등학교) ;
  • 김민지 (서울과학기술대학교 자연생명과학대학 정밀화학과) ;
  • 김아름 (서울과학기술대학교 자연생명과학대학 정밀화학과) ;
  • 박수남 (서울과학기술대학교 자연생명과학대학 정밀화학과)
  • Received : 2010.12.15
  • Accepted : 2010.12.24
  • Published : 2010.12.30
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Abstract

In this study, the antibacterial, antioxidative effect and component analysis of Pinus koraiensis leaf extracts were investigated. MIC values of the ethyl acetate fraction from P. koraiensis leaf extracts on P. acnes, S. aureus, P. ovale, and E. coli were 0.06 %, 0.25 %, 0.13 % and 0.50 %, respectively. The results showed that the antibacterial activity of the ethyl acetate fraction on P. acnes, P. ovale. and S. aureus was more prominent. The aglycone fraction of P. koraiensis leaf extracts ($22.93\;{\mu}g/mL$) showed more higher free radical (1,1-diphenyl-2-picrylhydrazyl, DPPH) scavenging activity ($FSC_{50}$). Reactive oxygen species (ROS) scavenging activity ($OSC_{50}$) of P. koraiensis leaf extracts on ROS generated in $Fe^{3+}$-EDTA/$H_2O_2$ system was investigated using the luminol-dependent chemiluminescence assay. The 50 % ethanol extract ($0.70\;{\mu}g/mL$) showed the most prominent ROS scavenging activity. Also the ethyl acetate ($1.04\;{\mu}g/mL$) and the aglycone fraction ($1.43\;{\mu}g/mL$) showed very high antoxidant activity. The protective effects of extract/fractions of P. koraiensis leaf extracts on the rose-bengal sensitized photohemolysis of human erythrocytes were investigated. The P. koraiensis leaf extracts showed cellular membrane protective effects in a concentration dependent manner ($5{\sim}50\;{\mu}g/mL$). TLC and HPLC chromatogram of the ethyl acetate fraction obtained from hydrolysis of P. koraiensis leaf extracts revealed 2 main bands (PK-4, PK-6) and peaks (peak 1, peak 2), which were identified as kaempferol-3-O-glucoside (PK-6, peak 1) and kaempferol-3-O-arabinoside (PK-4, peak 2) by LC/ESI-MS/MS, respectively. These results indicate that extract/fractions of P. koraiensis can function as antioxidants in biological systems, particularly skin exposed to UV radiation by scavenging ROS, and protect cellular membrane against ROS. Extract/fractions of P. koraiensis can be applicable to new cosmeceuticals for antioxidant, antiaging, and antibacterial activity.

본 연구에서는 잣나무 잎 추출물의 항균, 항산화 및 성분 분석에 관한 연구를 수행하였다. 피부 상재균에 대한 항균활성 측정결과, Propionibacterium acnes (P. acnes), Staphylococcus aureus (S. aureus), Pityrosporum ovale (P.ovale) 및 Escherichia coli (E. coli)에 대한 ethyl acetate 분획의 MIC는 각각 0.06 %, 0.25 %, 0.13 %, 0.50 %로 나타났으며, P. acnes, P. ovale 및 S. aureus에서 큰 항균활성을 나타내었다. 잣나무 잎 추출물의 free radical (1,1-diphenyl-2-picrylhydrazyl, DPPH) 소거활성($FSC_{50}$)은 aglycone 분획에서 $22.93\;{\mu}g/mL$으로 나타났다. Luminol-의존성 화학발광법을 이용한 $Fe^{3+}$-EDTA/$H_2O_2$계에서 생성된 활성산소종(reactive oxygen species, ROS)에 대한 잣나무 잎 추출물의 총 항산화능($OSC_{50}$)은 50 % ethanol extract 분획에서 $0.70\;{\mu}g/mL$, ethyl acetate 분획 및 aglycone 분획이 각각 1.04 및 $1.43\;{\mu}g/mL$으로 매우 큰 항산화능을 보였다. Rose-bengal로 증감된 사람 적혈구의 광용혈 실험에서 추출물의 세포보호 효과를 측정하였다. 잣나무 잎 추출물 분획들은 농도 의존적($5{\sim}50\;{\mu}g/mL$)으로 세포보호 효과를 나타내었다. 잣나무 잎 추출물의 가수분해로 얻은 ethyl acetate 분획은 TLC (PK-4, PK-6)와 HPLC (peak 1, peak 2)에서 2개의 주성분으로 나타났다. 이 성분들은 LC/ESI-MS/MS를 통해서 PK-6는 kaempferol-3-O-glucoside (astragalin)로, PK-4는 kaempferol-3-O-arabinoside (juglanin)로 확인되었다. 이상의 결과들은 잣나무 잎 추출물이 ROS를 소광시키거나 소거함으로써, 그리고 ROS에 대항하여 세포막을 보호함으로써 생체계, 특히 태양 자외선에 노출된 피부에서 항산화제로서 작용할 수 있음을 가리키며, 잣나무 잎 성분 분석, 그리고 피부 상재균에 대한 항균작용으로부터 항산화, 항노화 및 항균성 화장품 소재로서의 응용 가능성이 있음을 확인하였다.

Keywords

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