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E. Soczewiński Medical University Department of Chemistry Staszica 6 20-081 Lublin Poland

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M. Wójciak-Kosior Medical University Department of Chemistry Staszica 6 20-081 Lublin Poland

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G. Matysik Medical University Department of Chemistry Staszica 6 20-081 Lublin Poland

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Flavonoid glycosides are much more polar than their aglycones and the two groups of compounds are difficult to separate by planar chromatography owing to the ‘general elution problem’ — glycosides require development with mobile phases of higher eluent strength. The problem of separating both groups can be solved by gradient elution or by incremental gradient multiple development in its simplest form — double development. The latter technique is illustrated for nine glycosides and seven aglycones by development along two-thirds of the plate length with a strong mobile phase and, after evaporation of the solvent, development to the full distance with a weaker mobile phase. The two stages of development are illustrated by densitograms.

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Journal of Planar Chromatography - Modern TLC
Language English
Size A4
Year of
Foundation
1988
Volumes
per Year
1
Issues
per Year
6
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0933-4173 (Print)
ISSN 1789-0993 (Online)

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