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Antioxidant and Anticancer Activities of Water Extracts from Ceramium kondoi

비단풀 물 추출물의 항산화력 및 항암활성

  • An, Deok-Ho (Gaya Elementary School) ;
  • Cho, Seug-Ja (Munam Elementary School) ;
  • Jung, Eun-Sil (Dept. of Food Science and Biotechnology, Kyungnam University) ;
  • Lee, Hyun-Jin (Dept. of Food and Nutritional Sciences, Kyungnam University) ;
  • Hwang, Ji-Hwan (Dept. of Food Science and Biotechnology, Kyungnam University) ;
  • Park, Eun-Ju (Dept. of Food and Nutritional Sciences, Kyungnam University) ;
  • Park, Hae-Ryong (Dept. of Food Science and Biotechnology, Kyungnam University) ;
  • Lee, Seung-Cheol (Dept. of Food Science and Biotechnology, Kyungnam University)
  • 안덕호 (함안 가야초등학교) ;
  • 조석자 (함안 문암초등학교) ;
  • 정은실 (경남대학교 식품생명학과) ;
  • 이현진 (경남대학교 식품영양학과) ;
  • 황지환 (경남대학교 식품생명학과) ;
  • 박은주 (경남대학교 식품영양학과) ;
  • 박해룡 (경남대학교 식품생명학과) ;
  • 이승철 (경남대학교 식품생명학과)
  • Published : 2006.12.29

Abstract

The present study describes the preliminary evaluation of the antioxidant activity and the cytotoxic effect of Ceramium kondoi. The antioxidant activities and cytotoxic effect of the water extracts were evaluated by total phenolic contents (TPC), DPPH radical scavenging activity (RSA), reducing power (RP), comet assay, and MTT reduction assay. TPC, DPPH RSA, and RP of the extract at the concentration of $1,000{\mu}g/mL$ was $659.2{\mu}M$, 86.0%, and 1.084, respectively, and those were concentration dependent. The $200{\mu}M\;H_2O_2-induced$DNA damage was inhibited by C. kondoi water extract in a dose dependent manner in human leukocytes. The inhibition was by 62.3, 39.8, 24.8% and 16.4% at the concentration of 5, 10, $25{\mu}g/mL$ and $50{\mu}g/mL$, respectively. Cytotoxic activity on HT-29 cells and MCF-7 cells of the C. kondoi water extract at the concentration of $10{\mu}g/mL$ was 49% and 60%, respectively. These results strongly support the possibility of C. kondoi as a source of natural functional materials.

비단풀 물 추출물을 제조하여 DMSO 용매에 녹인 후 항산화활성과 항암활성을 조사하였다. 항산화활성을 10, 100, 250, 500, $1,000{\mu}/mL$의 농도에서 측정하였을 때, 총 페놀함량, 라디칼 소거능, 환원력은 각각 농도에 의존하여 결과값이 향상되었으며, $1,000{\mu}g/mL$ 농도에서 각각 $659.2{\mu}M$, 86.0%, 1.084의 수치로 높은 활성을 보였다. 그리고 comet assay에서는 비단풀을 5, 10, 25, $50{\mu}g/mL$의 농도로 백혈구에 처리한 후 hydrogen peroxide $200{\mu}M$의 농도로 처리하여 DNA손상을 유도한 결과 손상된 DNA tail 부분의 DNA 함량을 측정한 % fluorescence in tail이 각각 62.3, 39.8, 24.8, 16.4%로 83.0%인 $H_2O_2$ 처리 양성 대조구에 비해 유의적으로 감소하였다. 항암효과를 조사하기 위한 MTT reduction assay 방법에서는 추출물을 처 리 하지 않은 대조구와 비단풀 물 추출물의 암세포 성장억제효과 비교시 대장암 유래의 암세포주 HT-29에서는 $10{\mu}g/mL$농도에서 49%의 생존율을 나타내었고, 유방암 유래의 암세포주 MCF-7에서 역시 $10{\mu}g/mL$농도에서 130%의 생존율을 확인하였다. 현재 한약재를 비롯한 농산물 유래의 추출물이 항산화효과와 항암효과를 보이는 연구가 많이 보고되고 있으며, 비단풀도 하나의 천연물 소재로 생리활성물질 탐색에 중요한 천연자원이 될 수 있는 가능성을 확인할 수 있었다.

Keywords

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