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자료유형
학술저널
저자정보
Choi, Chun-Whan (Biomaterials Research Center, Korea Research Institute of Chemical Technology) Choi, Yeon-Hee (Biomaterials Research Center, Korea Research Institute of Chemical Technology) Cha, Mi-Ran (Biomaterials Research Center, Korea Research Institute of Chemical Technology) Park, Jee-Hee (Biomaterials Research Center, Korea Research Institute of Chemical Technology) Kim, Young-Sup (Biomaterials Research Center, Korea Research Institute of Chemical Technology) Kim, Young-Kyoon (College of Forest Science, Kookmin University) Choi, Sang-Un (Biomaterials Research Center, Korea Research Institute of Chemical Technology) Yon, Gyu-Hwan (Biomaterials Research Center, Korea Research Institute of Chemical Technology) Hong, Kyung-Sik (Biomaterials Research Center, Korea Research Institute of Chemical Technology) Kim, Young-Ho (College of Pharmacy, Chungnam National University) Ryu, Shi-Yong (Biomaterials Research Center, Korea Research Institute of Chemical Technology)
저널정보
한국응용생명화학회 Applied Biological Chemistry Applied Biological Chemistry 제52권 제6호
발행연도
2009.1
수록면
638 - 642 (5page)

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Alpha-glucosidase inhibitors are oral antihyperglycemic agents that act on alpha-glucosidase competitively, delaying intestinal carbohydrate absorption and lessening postprandial increases in glucose levels. In the search for new classes of ${\alpha}$-glucosidase inhibitors extracted from natural resources, 420 different plant extracts were evaluated for their inhibitory effect on ${\alpha}$-glucosidase, in vitro. Amongst the tested extracts, the seed extract of Paeonia lactiflora (Paeoniaceae) demonstrated a significant degree of inhibition on the enzyme, according to dose. Extensive bioassay-guided fractionation of the extract resulted in the isolation of six materials, luteolin (1), resveratrol (2), trans-${\varepsilon}$-viniferin (3), gnetin H (4), suffruticosol A (5) and suffruticosol B (6), that are active agents for ${\alpha}$-glucosidase inhibition. Resveratrol (2) is a well-known naturally occurring hydroxystilbene, particularly abundant in wine and some related stilbene oligomers. Materials (3-6) exhibited relatively strong inhibition of ${\alpha}$-glucosidase and their $IC_{50}$ values were calculated as: 0.92mM (2), 3.15mM (3), 1.15 mM (4), 2.53mM (5) and 3.15mM (6). In contrast, the ($IC_{50}$) value of the reference drug, acarbose, was estimated as 8.28mM in vitro.

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