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KMID : 1007520140230010253
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Food Science and Biotechnology
2014 Volume.23 No. 1 p.253 ~ p.259
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An Ether and Three Ester Derivatives of Phenylpropanoid from Pear (,em>Pyrus pyrifolia Nakai cv. Chuhwangbae) Fruit and Their Radical-Scavenging Activity
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Cho Jeong-Yong
Lee Yu-Geon
Lee Sang-Hyun
Kim Wol-Soo
Park Keun-Hyung
Moon Jae-Hak
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Abstract
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The ethyl acetate-acidic layer obtained aftersolvent fractionation of Asian pear (Pyrus pyrifolia Nakaicv. Chuhwangbae) fruit peel methanol extracts waspurified by Sephadex LH-20 column chromatography andoctadecylsilane-high performance liquid chromatography,and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavengingactivity was evaluated. The four isolated compounds wereidentified as 2-O-(trans-p-coumaroyl) glyceric acid (1), 2-O-(cis-p-coumaroyl) glyceric acid (2), guaiacylglycerol-β-ferulic acid ether (3), and 2-O-(cis-caffeoyl) malic acid (4),based on the one- and two-dimensional nuclear magneticresonance spectroscopic data. The isolated compounds 1-4were identified for the first time from pear. Compound 4showed higher DPPH radical-scavenging activity than 1-3.
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KEYWORD
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Pyrus pyrifolia, pear fruit peel, phenylpropanoid derivatives, antioxidant, organic acid ester
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