한국유기농업학회지 (Korean Journal of Organic Agriculture)

  • 제32권1호
  • /
  • Pages.91-105
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  • 2024
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  • 1229-3571(pISSN)
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  • 2287-819X(eISSN)
한국유기농업학회 (Korean Association of Organic Agriculture)
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질경이 추출물의 항산화 및 항염증 활성

Antioxidant and Anti-inflammatory Effects of Plantago asiatica L. Extract

  • 최유경 (전북대학교 작물생명과학과) ;
  • 추병길 (숙명여자대학교 약학대학 약학연구소)
  • 투고 : 2023.11.10
  • 심사 : 2023.12.19
  • 발행 : 2024.02.29
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초록

본 연구에서는 페놀 화합물, 라디칼 소거능, 환원능력 분석 및 세포 내 ROS 측정을 통해 질경이 추출물의 항산화 능력을 확인하였다. 질경이 추출물의 총 폴리페놀 및 플라보노이드함량은 각각 50.91±0.78 mg GAE/g, 100.99±0.44 mg rutin/g으로 나타났으며, DPPH 및 ABTS radical 소거능과 환원력 모두 농도 의존적으로 증가하였다. 또한, 세포 내 ROS는 질경이 추출물에 의해 생성이 억제됨을 확인하였다. 항염증 활성은 RAW 264.7 세포를 이용하여 염증을 유도한 뒤 NO 측정과 western blot 분석을 통해 염증성 단백질 발현량을 확인하였다. 질경이 추출물은 LPS를 처리한 RAW 264.7 세포에서 NF-ĸB의 신호 전달 경로를 억제하여 염증성 단백질인 iNOS 및 COX-2의 발현량을 조절하였으며, 이로 인해 NO의 생성량을 억제하였다. 본 실험 결과를 통해 질경이 추출물의 항산화 및 항염증에 대한 우수한 활성을 확인하였으며, 식의약품 분야를 비롯한 농산업 분야에서 다양한 기능성 천연 소재로 활용될 수 있을 것으로 기대된다.

Plantago asiatica L. (P. asiatica) is a perennial plant belonging to the plantaginaceae and is useful in treating a various diseases such as wounds, bronchitis, and chronic constipation. The bioactive effects of P. asiatica extract was evaluated to determine its potential for use as a variety materials in the food, pharmaceutical, and agricultural industries. Polyphenol and flavonoid contents, free radical scavenging, reducing power activity, and reactive oxygen species (ROS) expression were measured to identify the antioxidative activity. Anti-inflammatory effects were evaluated via analysis of nitric oxide (NO) and pro-inflammatory protein expression in LPS-induced RAW 264.7 cell. As a result of measuring the antioxidant activities of the P. asiatica extract, the total polyphenol content was 50.91±0.78 mg gallic acid equivalents/g and the flavonoid content was 100.99±0.44 mg rutin equivalents/g, and both DPPH and ABTS radical scavenging activities and reducing power increased depending on the concentration. Also, intracellular ROS production was inhibited by the P. asiatica extract. No cytotoxicity was observed when P. asiatica extract was treated, and NO and inflammatory protein expression were inhibited, and nuclear factor kappa B (NF-κB) phosphorylation was also inhibited in a concentration-dependent manner. In conclusion, P. asiatica is a functional natural resources of antioxidant and anti-inflammatory agents that can be used in various industries, including food and agriculture.

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