Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Phenolic contents and antioxidant activities of extracts from young leaves of Camellia japonica L. in Jeju

제주 동백나무 어린 잎의 페놀류 함량과 항산화 효능

  • Jeong, Dong Won (Toxicology Laboratory, Major in Biomaterials, SARI, Jeju National University) ;
  • Kim, Min Young (Toxicology Laboratory, Major in Biomaterials, SARI, Jeju National University)
  • Received : 2017.08.05
  • Accepted : 2017.09.11
  • Published : 2017.12.01
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Abstract

This study has been performed to identify the phenolic contents and antioxidant properties of methanol and ethanol extracts of young Camellia leaves in Jeju. Total polyphenol and flavonoid contents were 74.9 and 46.1 mg gallic acid equivalent/100 g, and 30.6 and 21.4 mg RE/100 g in the methanol and ethanol extracts, respectively. Based on $IC_{50}$ values, both extracts were also found to possess potent scavenging capacities of 1,1-diphenyl-2-picrylhydrazyl, nitric oxide and superoxide anion radicals, and ferrous ion chelating and reducing power activities. These results showed that young Camellia leaves is a good antioxidant source and holds promise as a natural ingredient in functional food and pharmaceutical supplement.

본 연구는 제주 동백나무 어린 잎 메탄올 추출물과 에탄올 추출물의 페놀류 함량 및 항산화 활성에 대한 연구를 진행하였다. 메탄올 추출물과 에탄올 추출물의 총 폴리페놀과 플라보노이드 함량은 각각 74.9과 46.1 mg GAE/100 g 및 30.6과 21.4 mg RE/100 g이었다. 또한 추출물들은 DPPH, superoxide와 nitric oxide 라디컬 소거능, chelating 및 환원력을 가지는 것으로 나타났다. 이 결과들로 동백나무 어린 잎이 높은 항산화 효능을 가지고 있음을 알 수 있었으며, 차후 기능성 식품 및 약물 소재로서의 가능성을 검토할 필요가 있다.

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