Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Comparison of Antioxidant Effects by Different Extraction Methods in Flowers of Aster scaber, Aster maackii, Coreopsis lanceolata and Coreopsis tinctoria

참취, 좀개미취, 큰금계국 및 기생초 꽃의 추출방법에 따른 항산화 활성 비교

  • 우정향 (충북대학교 응용생명환경학부 원예과학과) ;
  • 신소림 (충북대학교 응용생명환경학부 원예과학과) ;
  • 장영득 (충북대학교 응용생명환경학부 원예과학과) ;
  • 이철희 (충북대학교 응용생명환경학부 원예과학과)
  • Published : 2009.10.31
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Abstract

Antioxidant substances were extracted from flowers of Aster scaber, Aster maackii, Coreopsis lanceolata and Coreopsis tinctoria using 2 types of extraction methods- ultrasonic wave and reflux, and antioxidant effects were compared. Higher yield of extract was obtained by ultrasonic wave method in all 4 species. Extraction time was different depending on species, but in all 4 species DPPH and ABTS free radical scavenging and ferrous ion chelating activity were higher or similar by ultrasonic wave than reflux method. Content of total polyphenol and flavonoid was mainly higher by ultrasonic wave than reflux method. Longer the treatment, the more the antioxidant activity and bioactive substances. Anti-lipid peroxidation of ultrasonic and reflux extracts obtained from flowers of Aster scaber and Coreopsis lanceolata were compared. Flower extract of Aster scaber obtained by reflux method showed the highest inhibition effect against peroxidation of linoleic acid, but extract of Coreopsis lanceolata obtained by 15-minute ultrasonic extract showed the highest effect. Ultrasonic wave extraction was more economical and efficient method than reflux extraction.

참취, 좀개미취, 큰금계국, 기생초 꽃 추출물의 항산화효과를 증가시킬 수 있는 적정 추출방법을 개발하기 위하여 환류냉각추출한 추출물과 15, 30, 45분 동안 초음파 추출한 추출물의 항산화 활성을 비교하였다. 추출수율은 모두 초음파 추출물에서 높게 나타났다. 종에 따라 적정 추출시간은 다르게 나타났으나, 4종 모두 초음파추출물이 환류 냉각추출물 보다 DPPH와 ABTS radical 소거능 및 Ferrousion chelating 활성이 우수하거나 유사하였다. 총 폴리페놀 및 플라보노이드의 함량 또한 대체로 초음파추출물에서 높게 나타났으며, 4종 모두 추출시간이 길어질수록 항산화물질 함량도 증가되는 경향을 보였다. 참취와 큰금계국 꽃 추출물의 지질과산화 억제활성을 비교한 결과, 참취 꽃은 환류냉각추출물, 큰금계국 꽃은 초음파 15분 처리구에서 지질과산화 억제활성이 우수하였다. 연구의 결과, 식물 종 및 목표로 하는 항산화 효과에 따라 추출시간에 차이는 있으나, 초음파추출이 환류냉각추출보다 추출시간이 짧고 항산화 효과를 증가시킬 수 있는 효과적인 추출방법임을 확인할 수 있었다.

Keywords

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