Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Cirsium japonicum Extracts Show Antioxidant Activity and PC12 Cell Protection against Oxidative Stress

좁은잎 엉겅퀴 추출물의 산화방지 활성 및 산화적 스트레스에 대한 PC12 세포 보호효과

  • Jang, Miran (Plant Resources Research Institute, Duksung Women's University) ;
  • Kim, Gun-Hee (Plant Resources Research Institute, Duksung Women's University)
  • 장미란 (덕성여자대학교 식물자원연구소) ;
  • 김건희 (덕성여자대학교 식물자원연구소)
  • Received : 2015.12.08
  • Accepted : 2016.03.23
  • Published : 2016.04.30
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Abstract

The phenolic compounds, antioxidant activity and neuronal cell protective effect of Cirsium japonicum extract were evaluated in this study. High performance liquid chromatography mass analysis showed that C. japonicum was composed of chlorogenic acid, linarin, and pectolinarin. C. japonicum extract showed its antioxidant activity with half-maximal inhibitory concentrations of 567 and $130{\mu}g/mL$ by DPPH and ABTS radical scavenging activity, respectively. The total antioxidant capacities of C. japonicum via DPPH, ABTS, and FRAP assays were 11.32, 100.15, and $12.76{\mu}g/mL$ trolox equivalents, respectively. In addition, the neuroprotective effect of C. japonicum extract was investigated by measuring cell viability via MTT, LDH and DCF-DA assay using $H_2O_2-damaged$ PC12 cells. C. japonicum extract showed neuronal cell protective effects in a dose-dependent manner. These results indicated that C. japonicum extract has potent antioxidant and neuronal protective effects. Therefore, C. japonicum can be regarded as an effective and safe functional food resource as natural antioxidants, and may decrease the risk of neurodegenerative disorders.

HPLC/MS를 이용하여 국내 자생 엉겅퀴(Cirsium japonicum)의 페놀성 화합물을 분석한 결과 제주지역 엉겅퀴가 가장 많은 페놀성 화합물을 함유하고 있었으며, chlorogenic acid가 73.15 mg/g dry weight, linarin이 76.67 mg/g dry weight 그리고 pectolinarin이 12.98 mg/g dry weight으로 확인되었다. 엉겅퀴의 기능성 식품으로서의 가치를 확인하기 위하여 산화방지 활성 및 신경세포 보호효과를 평가한 결과 DPPH, ABTS 및 FRAP assay에서 엉겅퀴의 강력한 산화방지 활성이 나타났다. 엉겅퀴 추출물이 DPPH 및 ABTS 라디칼의 50%를 저해하는 농도는 각각 $567{\mu}g/mL$와 $130{\mu}g/mL$으로 나타났다. DPPH, ABTS, FRAP법을 통한 총산화방지능은 각각 11.32, 100.15, $12.76{\mu}g/mL$ trolox equivalents 나타났다. 과산화수소로 산화적 손상을 유도한 PC12 세포에 대하여 MTT와 LDH assay를 이용하여 세포생존률을 측정한 결과 농도 의존적으로 세포 보호 활성이 나타났으며, 마찬가지로 활성산소종 생성률을 측정한 결과 농도 의존적으로 활성산소종 생성이 감소되어 세포 보호활성이 확인되었다. 본 연구를 통하여 엉겅퀴의 우수한 산화방지 활성 및 신경세포 보호효과가 검증되었다. 따라서 엉겅퀴는 안전한 식품 재료로서 꾸준히 섭취하였을 때 천연 산화방지제로 작용하여 신경퇴행을 예방함으로써 알츠하이머병, 파킨슨병 및 헌팅턴병 등의 질병 위험을 줄일 수 있을 것으로 판단된다.

Keywords

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