Journal of Applied Biological Chemistry

  • Volume 66
  • /
  • Pages.503-511
  • /
  • 2023
  • /
  • 1976-0442(pISSN)
  • /
  • 2234-7941(eISSN)
The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Anti-oxidant activities of ethanol extract and fractions from defatted Camellia japonica L. seeds

동백 유박 에탄올추출물 및 분획물의 항산화 활성

  • Weon Pho Park (Department of Food Science, Gyeongsang National University) ;
  • Nan Kyung Kim (Department of Food Science, Gyeongsang National University) ;
  • Seok Hee Han (Department of Food Science, Gyeongsang National University) ;
  • Sanghyun Lee (Department of Plant Science and Technology, Chung-Ang University) ;
  • Ji Hyun Kim (Department of Food Science, Gyeongsang National University) ;
  • Jine Shang Choi (Department of Food Science, Gyeongsang National University)
  • Received : 2023.12.07
  • Accepted : 2023.12.13
  • Published : 2023.12.31
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Abstract

The aim of this study was to investigate in vitro antioxidant activities of defatted Camellia japonica L. seeds (DCJS). The DCJS were extracted using ethanol and then fractionated with butanol (BuOH), ethyl acetate (EtOAc), chloroform, and hexane. To evaluate antioxidant activity of extract and fractions from DCJS, we investigated free radical scavenging activities such as 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS+), hydroxyl radical (•OH), and superoxide anion (O2-) radicals. The five extract and fractions of DCJS dose-dependently increased DPPH, ABTS+ and O2- radical scavenging activities. The BuOH fraction of DCJS showed the highest free radical scavenging activities among other extract and fractions. The contents of total polyphenol and flavonoid in BuOH fraction of DCJS were 23.26 mg GAE/g and 32.39 mg QE/g, respectively. The polyphenol and flavonoids contents of BuOH fraction has highest than other extract and fractions. In addition, BuOH and EtOAc fraction of DCJS contained 102.37 and 165.05 ㎍/g of camelliaside B, respectively. Therefore, DCJS has higher antioxidant activity and may be useful as a natural antioxidant material.

본 연구는 동백나무(Camellia japonica L.) 유박 추출물 및 분획물의 in vitro 항산화 활성에 대해 조사하였다. 동백나무 유박은 에탄올을 사용하여 추출하였으며, 이 후 부탄올(BuOH), 에틸아세테이트(EtOAc), 클로로포름 및 헥산을 이용하여 분획물을 조제하였다. 동백 유박 추출물 및 분획물의 항산화 활성을 평가하기 위해 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS+), hydroxyl radical, superoxide anion (O2-) radical 소거능을 측정하였다. 동백 유박 추출물 및 분획물은 농도의존적으로 DPPH, ABTS+ 및 O2- radical 소거능을 증가시켜 항산화 활성을 나타내었다. 특히 동백 유박 BuOH 분획물은 다른 추출물 및 분획물에 비해 가장 높은 radical 소거능을 나타내었다. 동백 유박 BuOH 분획물의 총 폴리페놀 및 플라보노이드 함량은 각각 23.26 mg GAE/g 및 32.39 mg QE/g이었으며, 이는 다른 추출물 및 분획물보다 높은 수치임을 알 수 있었다. 동백 유박 BuOH 분획물 및 EtOAc 분획물의 cameliaside B 함량은 각각 102.37, 165.05 ㎍/g임을 확인하여 다른 추출물 및 분획물에 비해 높은 수치를 나타냄을 알 수 있었다. 따라서 동백 유박 추출 및 분획물 중에서 BuOH 분획물 및 EtOA c 분획물은 다른 추출 및 분획물에 비해 radical 소거능이 우수할 뿐 아니라 항산화 물질 함유량이 높아, 항산화 기능성 소재로 활용될 수 있을 것으로 사료된다.

Keywords

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