Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Rapid separation of Capsicum annuum L. leaf extract using automated HPLC/SPE/HPLC coupling system (Sepbox system) and identification of α-glucosidase inhibitory active substances

자동화 HPLC/SPE/HPLC 시스템(Sepbox system)을 활용한 고추 잎 (leaf of Capsicum annuum L.) 추출물 분리 및 α-glucosidase 억제 활성 물질 탐색

  • Kim, Min-Seon (Natural Product Informatics Research Center, Korea Institute of Science and Technology) ;
  • Jin, Jong Beom (Natural Product Informatics Research Center, Korea Institute of Science and Technology) ;
  • Lee, Jung Hwan (Natural Product Informatics Research Center, Korea Institute of Science and Technology) ;
  • An, Hye Suck (Marine Biology Research Division, National Marine Biodiversity Institute of Korea) ;
  • Pan, Cheol-Ho (Natural Product Informatics Research Center, Korea Institute of Science and Technology) ;
  • Park, Jin-Soo (Natural Product Informatics Research Center, Korea Institute of Science and Technology)
  • Received : 2020.12.24
  • Accepted : 2020.12.30
  • Published : 2021.03.31
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Abstract

Phytochemicals include plant-derived natural products that promote and improve the human metabolism and physiological activity, and there is a lot of research to find the value of the molecules is in progress. Likewise, we obtained 288 fractions of Capsicum annuum L. extract in less than 20 h using HPLC/SPE/HPLC coupling experiment through Sepbox system, an effective separation system to search for active substances in natural resources and ensure efficacy and reliability. Therefore, this experiment allowed rapid identification of biologically active molecules from the extract compared to traditional separation processes. Of the above fractions, eight fractions showed the α-glucosidase inhibitory (AGI) activity and subsequent LC-MS analysis revealed one of the active molecules as luteolin 7-O-glucoside. In addition, we proved the increase in AGI activity according to deglycosylation of flavonoid glycoside. Therefore, this study suggests that the Sepbox system can quickly separate and identify active components from plant extract, and is an effective technique for finding new active substances.

식물 유래 화합물은 다양한 생리활성과 구조 다양성으로 많은 연구자에게 관심을 받고 있으나 화합물 분리는 많은 시간 소요, 과량의 유기용매 소모와 분리과정 중의 활성성분의 유실 등의 어려움을 겪게 된다. 이러한 점을 극복하기 위하여 HPLC/SPE/HPLC를 결합한 Sepbox 분리시스템을 이용하여 고추잎 추출물에서 288개 분획물을 획득하였고 이 중에서 alpha-glucosidase 저해효능을 가지는 화합물인 luteolin 7-O-glucoside를 효과적으로 확인할 수 있었다. 또한 고추잎에 풍부한 플라보노이드 다당체를 가수분해함에 따라 해당 활성이 증가함을 검증하였다. 그러므로 본 연구결과는 Sepbox 시스템이 생리활성 평가와 결합할 경우 식물 내 유용물질 탐색에 효과적임을 보여주었다.

Keywords

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