期刊
JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES
卷 24, 期 8, 页码 1171-1179出版社
TAYLOR & FRANCIS INC
DOI: 10.1081/JLC-100103439
关键词
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Ten flavonoid compounds were isolated by means of preparative column chromatography from propolis collected in southern Poland. Their mass spectra were taken and compared with a spectrum library. As a result, nine of them were identified as: tectochrysin, pinocembrin, chrysin, galangin, genkwanin, apigenin, kaempferol, pilloin, 5-hydroxy-4',7-dimethoxyflavone, and pinostrobin chalcone. Pilloin and pinostrobin chalcone were isolated from propolis for the first time. The optimum system of solvents for separation on a silica gel column was chosen on the basis on R-F vs. mixed solvent composition dependence, obtained by means of thin-layer chromatography.
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