Journal
PHARMACEUTICAL BIOLOGY
Volume 40, Issue 2, Pages 139-143Publisher
SWETS ZEITLINGER PUBLISHERS
DOI: 10.1076/phbi.40.2.139.5849
Keywords
thin-layer chromatography; screening; active principles; plant extracts
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A rapid and economical procedure for the determination of the main active principles of medicinal plants (alkaloids. anthraquinones, cardiac glycosides. coumarins. flavonoids, saponins, tannins. essential oils) is proposed. The extraction of these active principles has been performed by means of three solvents, based on a method of increasing polarity. The plant extracts, whose compositions are known. were analysed on silica gel layers with the aid of three solvent systems and six spray reagents.
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