HPTLC Quantification of Withaniasomnifera (L.) Dunal
DOI:
https://doi.org/10.48165/Keywords:
Thin Layer Chromatography, Withaniasomnifera, Withaferin A, Withanolide A, Withanolide BAbstract
At present study a simple, selective, easy, robust, sensitive and precise method is developed to investigate the outcomes of HPTLC for the simultaneous determination of 3 key withanolides, namely withaferin A, withanolide A and withanolide B in Ashwagandha; Withaniasomnifera plant part samples. The method is analyzed simultaneously on Camag aluminum per-coated silica gel 60-F254 HPTLC plates, using toluene: ethylacetate:formic acid:ethanol (6:3:0.1:0.6 v/v/v/v) as mobile phase. The Quantitative evaluation of withanolides was performed by densitometry in the reflection-absorption mode at 530 nm. The method was validated for recovery, precision, accuracy, robustness, limit of detection, limit of quantitation, and specificity conferring to International Conference on Harmonization guidelines. Specificity of quantification was confirmed using retention factor (Rf) values, UV Visual spectral correlation, and electrospray ionization mass spectra of marker compounds in sample tracks. This combination of techniques has been applied, for the first time, for the estimation of withaferin-A, withanolide A and withanolide B in fruit, leaf, stem and root parts samples of Withaniasomnifera. Present method may be beneficial in a quality control setting as it would allow rapid qualitative analysis of herbal material while sustaining accurate quantification of extract composition and can be used for routine analysis as well as for quality control of raw materials and herbal formulations.
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