Phenolic acids of walnut (Juglans regia L.)
作者： H Sytykiewicz , B Leszczynski , G Chrzanowski , R Krzyzanowski , P Czerniewicz
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摘要: The chromatographic separations showed the presence of eleven free phenolic acids (trans-cinnamic, o-coumaric, p-coumaric, chlorogenic, ferulic, gallic, caffeic, p-hydroxybenzoic, syringic, tannic and vanillic) in walnut tissues. p-hydroxybenzoic acid was a predominant compound green husks (618.8 μg·g-1), though, high content it found leaves obtained July (478.3 μg·g-1). chlorogenic (306.7 μg·g-1) twice higher than that July. Similar level coumaric determined (o-coumaric: 42.4–48.2 μg·g-1; p-coumaric: 78.6–94.3 o-coumaric not May-leaves. Moreover, possessed caffeic (leaves May – 456.9; 262.1 ferulic 93.5; 292.5 male inflorescences vanillic (359.5 were rich polyphenolic acids, syringic (427.0 (237.4 However, especially collected (350.7 In tested tissues walnut, gallic lowest concentration (male 32.7 μg·g-1and 12.7 general, there great variation between studied organs walnut; nevertheless, are precious source acids.
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