Showing papers by "Marian Naczk published in 2006"
TL;DR: This overview provides a cursory account of the source, extraction and analysis of phenolics in fruits, vegetables and cereals.
1,251 citations
TL;DR: In this article, phenolics were extracted from blueberry leaves and fruits with 70% (v/v) acetone and 95% ethanol, and the lyophilized crude PP extract was then fractionated on a Sephadex LH-20 column using first 95% (vv) ethanol as a mobile phase for elution of fraction of phenolics low in tannins, then 50% acetone to elute fraction rich in condensed tannin.
76 citations
Journal Article•
TL;DR: In this article, condensed tannins and phenolic acids were extracted from canola hulls into acetone-water and fractionated using Sephadex G-25 and G-50 column chromatography with 50% (v/v) acetone as the mobile phase.
Abstract: Condensed tannins and phenolic acids were extracted from canola hulls into acetone-water (70:30; v/v) and fractionated using Sephadex G-25 and G-50 column chromatography with 50% (v/v) acetone as the mobile phase Three fractions containing phenolic compounds were obtained from the extract using Sephadex G-25 and four using Sephadex G-50 The latter fractions eluted from the columns, packed with either gel, both gels were free of condensed tannins The contents of total phenolics and condensed tannins were determined in the range of 52–280 mg/g, 0198–1153 A500/ mg (vanillin method), and 0333–1330 A550/mg (after n-butanol/HCl hydrolysis) The method described can be used as a step in the purification of condensed tannins of canola hulls before semi-preparative RP-18 HPLC column chromatography
2 citations