Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Pancreatic Lipase Inhibitory and Antioxidant Activities of Zingiber officinale Extracts

생강 추출물의 pancreatic lipase 저해 및 항산화 활성

  • Bae, Jong-Sup (College of Pharmacy, Kyungpook National University) ;
  • Kim, Tae-Hoon (Department of Herbal Medicinal Pharmacology, Daegu Haany University)
  • Received : 2010.12.06
  • Accepted : 2011.04.15
  • Published : 2011.06.30
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Abstract

Ginger (Zingiber officinale) is a well-known herb that is widely consumed as spice for the flavoring of foods. As part of our continuing search for bioactive materials, the in vitro pancreatic lipase inhibition and antioxidant properties of an aqueous ethanolic extract of Z. officinale were investigated. The total phenolic content was determined using a spectrophotometric method. The antioxidant efficacies of the extract was studied with radical scavenging assays using DPPH and $ABTS^+$ radicals. Further more, the antiobesity effect of the extract was evaluated by porcine pancreatic lipase assay. In particularly, the pancreatic lipase inhibitory activity of the ethyl acetate (EtOAc)-soluble portion from Z. officinale was significantly higher than that of the other solvent-soluble portions. The results suggest that Z. officinale may have therapeutic potential that may be useful in development of an anti-obesity agent or its precursors.

신선한 생강을 80% EtOH로 침지 추출하여 얻어진 추출물을 $CHCl_3$, EtOAc, n-BuOH로 순차 용매 분획하였고, pancreatic lipase 저해활성, DPPH 및 $ABTS^+$ radical 소거능을 평가하였다. Pancreatic lipase 저해활성을 측정한 결과, EtOAc층의 15.6 ${\mu}g$/mL의 실험 농도에서 에서 대조군인 orlistat보다 강한 $98.0{\pm}0.7%$ 저해능을 확인하였으며, 생강의 주성분으로 잘 알려져 있는 6-gingerol의 경우 같은 농도에서 $16.2{\pm}0.5%$의 상대적으로 낮은 저해능을 나타내었다. DPPH 라칼 소거능은 페놀성 화합물의 함량이 상대적으로 높은 EtOAc층의 125 ${\mu}g$/mL의 농도에서 $56.5{\pm}1.4%$, 62.5 ${\mu}g$/mL의 농도에서 $40.5{\pm}1.2%$의 라디칼 소거능을 확인하였고, 이는 생강의 항산화 활성은 생강 추출물에 존재하는 6-gingerol 등과 같은 페놀성 화합물이 관여함을 시사하였다. 또한 총페놀성 함량이 g당 $82.0{\pm}0.3$ mg으로 나타난 $CHCl_3$층에 대해서도 $ABTS^+$ 라디칼 소거 활성물질의 존재가 시사되었으며, pancreatic lipase, DPPH 및 $ABTS^+$ 라디칼 소거활성물질의 동정을 진행 중에 있으며, 향후 이들 활성물질의 활성 기작에 대한 연구가 필요하다고 사료된다. 또한 본 연구결과는 보다 우수한 pancreatic lipase 저해능을 가지는 새로운 선도화합물 발굴을 위한 기초자료로 이용될 수 있을 뿐만 아니라 국내에 자생하는 생강의 식물 화학적 성분에 대한 기초자료로 이용될 수 있을 것으로 사료된다.

Keywords

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