Summary
Existing thin-layer chromatographic (TLC) methods for the separation of hydroxyanthraquinones in plant materials were found to have limited applications. This initiated the development of some new TLC systems to separate the five principal hydroxyanthraquinones: chrysophanol, physcion, emodin, rhein and aloe emodin normally present together in plant materials, on a single chromatogram and usually with a single solvent system.
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Rai, P.P., Shok, M. Thin-layer chromatography of hydroxyanthraquinones in plant extracts. Chromatographia 14, 599–600 (1981). https://doi.org/10.1007/BF02262892
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DOI: https://doi.org/10.1007/BF02262892