Journal of Plant Biotechnology

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Antioxidant activity of ethanol extracts and fractions from Castanea crenata inner shell

율피 추출물 및 분획물의 항산화 활성

  • Park, Chan-Hwi (Department of Medical Laboratory Science, College of Health Science, Dankook University) ;
  • Kang, Hyun (Department of Medical Laboratory Science, College of Health Science, Dankook University) ;
  • Lee, Sung-Gyu (Department of Medical Laboratory Science, College of Health Science, Dankook University)
  • 박찬휘 (단국대학교 보건복지대학 임상병리학과) ;
  • 강현 (단국대학교 보건복지대학 임상병리학과) ;
  • 이성규 (단국대학교 보건복지대학 임상병리학과)
  • Received : 2022.06.27
  • Accepted : 2022.06.28
  • Published : 2022.06.30
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Abstract

This study examined the antioxidant activity of ethanol extract and fraction from Castanea crenata inner shell in vitro. Antioxidant activity was evaluated through total polyphenol and flavonoid contents and DPPH radical scavenging ability using electron spin resonance (ESR). The total polyphenol contents of the 70% ethanol extract and ethyl acetate fraction were 39.76 mg GAE/g and 323.92 mg GAE/g (p < 0.05). The total polyphenol contents of the ethyl acetate fraction were higher than other fractions. Furthermore, the total flavonoid contents of ethyl acetate were higher than other fractions at 13.12 mg QE/g (p < 0.05). In DPPH radical scavenging ability measurement, the RC50 value of ethyl acetate was lower than ascorbic acid at 2.27 ㎍/mL (p < 0.05). In conclusion, this result showed that the ethyl acetate fraction of Castanea crenata inner shell 70% ethanol extract has high antioxidant activity.

본 연구에서는 율피 추출물 및 분획물의 항산화 활성을 in vitro실험을 통하여 조사하였다. 총 폴리페놀 함량은 율피의 70% 에탄올 추출물에서 39.76 ㎍/mL였고 분획물 중에서는 ethyl acetate 층의 함량이 323.92 ㎍/mL으로 가장 높았다(p < 0.05). 총 플라보노이드 함량 측정 결과 폴리페놀 측정 결과와 유사하게 ethyl acetate 분획물의 함량이 13.12 ㎍/mL으로 가장 높았다(p < 0.05). DPPH 라디칼 소거능 측정 결과 ethyl acetate 분획물의 RC50 값이 2.27 ㎍/mL으로 양성 대조군인 ascorbic acid보다 낮은 RC50 값을 나타내었다(p < 0.05). 모든 결과를 종합해보았을 때, 율피의 70% 에탄올 추출물과 분획물 중 ethyl acetate 분획물의 항산화 활성이 가장 높게 나타났음을 확인하였다. 이에 본 연구의 결과는 율피를 기능성 소재로서 활용하는데 기초 자료로 쓰일 것으로 기대되며, ethyl acetate 분획물에 대한 추가적인 연구가 이루어져야 할 것으로 판단된다.

Keywords

Acknowledgement

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No.2021R1F1A1063617).

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