Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1077, Issue 2, Pages 202-206Publisher
ELSEVIER
DOI: 10.1016/j.chroma.2005.03.130
Keywords
Rheum emodi; anthraquinones; physcion; chrysophanol; emodin; chrysophanol glycoside; HPTLC
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A high-performance thin layer chromatographic (HPTLC) method for the rapid and simple quantification of the four major anthraquinone derivatives i.e. physcion, chrysophanol, emodin and chrysophanol glycoside in Rheum emodi is described. HPTLC of anthraquinone derivatives was performed on pre-coated RP- 18 F-254S HPTLC plates. For achieving good separation, the mobile phase of methanol-water-formic acid (80:19: 1, v/v/v) was used. The densitometric determination of anthraquinone derivatives was carried out at 445 nm in reflection/absorption mode. The calibration curves were linear in the range of 20-100 ng for physcion, 80-400 ng for chrysophanol and emodin, and 200-1000 ng for chrysophanol glycoside. The method was found to be reproducible and convenient for quantitative analysis of anthraquinone derivatives in the methanolic extract of rhizomes of R. emodi collected from three different locations of Western Himalaya, India. (C) 2005 Elsevier B.V. All rights reserved.
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