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The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Biological activities of ethanol extract from the seawater algae, Chlorella elliposidea C020

해수클로렐라 [Chlorella elliposidea C020] 에탄올 추출물에 대한 생리 활성

  • Kim, Hyun-Jin (Department of Pharmaceutical Engineering, Collage of Medial Life Science, Silla University) ;
  • Kim, In-Hae (Department of Pharmaceutical Engineering, Collage of Medial Life Science, Silla University) ;
  • Lee, Jae-Hwa (Department of Pharmaceutical Engineering, Collage of Medial Life Science, Silla University)
  • 김현진 (신라대학교 의생명과학대학 제약공학과) ;
  • 김인혜 (신라대학교 의생명과학대학 제약공학과) ;
  • 이재화 (신라대학교 의생명과학대학 제약공학과)
  • Published : 2008.04.29
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Abstract

We investigated the biological activities of ethanol extract from the seawater algae, Chlorella elliposidea C020 such as antibacterial activity, anti-oxidant activity, tyrosinase inhibitory activity and hemolytic activity against human erythrocytes. Extract was obtained from various solvent, methanol, ethanol, acetone and ethanol + acetone (1:1, v/v%), 95% ethanol proved to be best extraction solvents. The contents of ethanol extract were higher in freeze-dried sample than that in frozen-thawing. Antibacterial activities of ethanol extract showed strong inhibitory effect against Bacillus subtilis PM125, Bacillus licheniformis and fish pathogenic bacteria, Vibrio parahaemolyticus KCTC2471 and Edward tarda NUF251. However, this extract didn't worked against antifungal activity against Candida albicans KCTC1940. And, ethanol extract was without hemolytic activity against human erythorocytes. The ethanol extract showed 75% of free radical scavanging effect on 2.0 mg/mL using DPPH method. In tyrosinase inhibition assay of ethanol extract, $IC_{50}$ (Inhibition Concentration) was measured as 10.87 mg/mL. Conclusionally, ethanol extract of Chlorella elliposidea C020 has good candidate for bioactive materials.

해수클로렐라 (Chlorella elliposidea C020) 에탄올 추출물로부터 항균 및 항곰팡이 활성, 항산화활성, tyrosinase inhibitory 활성 (미백효과)과 용혈활성을 실험하였다. 효율적인 추출을 위해서 동결건조 후 95% 에탄올로 2시간 추출하는 것이 가장 좋다는 것을 알 수 있었다. 해수클로렐라 에탄올 추출물의 항균 및 항곰팡이에 대한 활성을 측정한 결과, B. subtilis PM125와 B. licheniformis, V. parahemolyticus와 E. tarda NUF251에서 활성을 나타내었다. 그러나, 곰팡이인 C. albicanse에 대하여서는 활성을 나타내지 않았으며, 인간의 적혈구로 용혈활성 실험한 결과, 아주 낮은 활성을 나타내었다. DPPH방법을 이용하여 항산화 능력을 측정한 결과, 2 mg/mL에서 75% 라디칼 소거능력을 나타내었다. 해수클로렐라 에탄올 추출물의 tyrosinase 저해활성 $IC_{50}$는 10.87 mg/mL로 나타났다. 이러한 결과를 바탕으로 해수클로렐라 에탄올 추출물로부터 다양한 생리활성물질을 개발하여 고부가가치 제품을 창출할 수 있을 것으로 판단된다.

Keywords

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