Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Pancreatic Lipase Inhibitory and Antioxidant Activities of Polygonum aviculare Extract

마디풀 추출물의 Pancreatic Lipase 저해 및 항산화 활성 평가

  • Kim, Tae-Hoon (Department of Herbal Medicinal Pharmacology, Daegu Haany University)
  • 김태훈 (대구한의대학교 한약재약리학과)
  • Received : 2010.11.15
  • Accepted : 2011.04.01
  • Published : 2011.04.30
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Abstract

As part of our continuing search for novel bioactive natural products, antioxidant and pancreatic lipase inhibitory activities of the aqueous ethanolic extract of Polygonum aviculare were investigated. In addition, the total phenolic content was quantified by a spectrophotometric method. The antioxidant properties of the extract were evaluated by radical scavenging assays such as DPPH and $ABTS^+$ radicals. The anti-obesity efficacy of P. aviculare extract was tested by porcine pancreatic lipase assay. All tested samples showed a dose-dependent pancreatic lipase inhibitory and radical scavenging activities. In terms of the $IC_{50}$ value, the ethyl acetate (EtOAc) soluble portion was most potent than other solvent soluble portions. The results suggested that P. aviculare could be considered as a new potential source of natural antioxidant and anti-obesity agent for food, nutraceutical, cosmetics industries.

마디풀을 80% ethanol로 침지 추출하여 얻어진 추출물에 대해 $CHCl_3$, EtOAc 및 n-BuOH로 순차 용매 분획 하였고, 얻어진 결과물에 대하여 DPPH 및 $ABTS^+$ radical 소거능 및 pancreatic lipase 저해활성을 평가하였다. DPPH 라디칼 소거능은 페놀성 화합물의 함량이 상대적으로 높은 EtOAc층의 $100{\mu}g/mL$의 시험농도에서는 $58.1{\pm}2.3%$의 라디칼 소거능을 확인하였고, 마디풀 추출물에 존재하는 페놀성 화합물이 라디칼 소거능과의 연관성을 시사하였다. 또한 $ABTS^+$ 라디칼 소거능은 EtOAc층이 $IC_{50}=2.8{\pm}0.5{\mu}g/mL$. $CHCl_3$층이 $IC_{50}=9.2{\pm}0.5{\mu}g/mL$의 강한 활성이 확인되었고, 강력한 활성물질의 존재가 시사되었다. 또한, pancreatic lipase 저해활성을 측정한 결과, 강한 $ABTS^+$ 라디칼 소거능을 나타낸 EtOAc층과 $CHCl_3$층의 $IC_{50}=1.9{\pm}0.2$. $5.7{\pm}1.3{\mu}g/mL$의 저해율을 나타내었으며 이는 대조군인 orlistat에 비해 다소 약하나 단일물질로 정제할 경우 더욱 강한 효능의 화합물이 존재할 가능성을 시사하였다. 향후 이들 활성물질 동정을 통한 활성 기작에 대한 연구가 필요하며 본 연구결과는 보다 우수한 라디칼 소거능 및 pancreatic lipase 저해능을 가지는 새로운 선도화합물 발굴을 위한 기초자료로 이용될 수 있을 뿐만 아니라 국내에 자생하는 마디풀의 식물 화학적 성분연구에 대한 기초자료로 활용가능하리라 사료된다.

Keywords

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