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Background In the present study, an HPTLC (high-performance thin-layer chromatography) method was developed for the quantitative determination and validation of the curcumin in the methanolic fraction of  Curcuma longa L . For achieving good separation of curcumin, the mobile phase of chloroform:methanol (97:3) was used. The densitometric analysis of curcumin was performed at 420 nm in reflection/absorption mode. Results Linearity of the method was obtained in the range of 100‒600 ng per spot. During analysis, the methanolic fraction of the  C. longa  showed the presence of a quantifiable amount of curcumin. The content of curcumin was found to be 1.5% (per dry weight). Conclusions The method is specific, simple, precise, and accurate. The obtained data can have used for the routine analysis of the reported biomarkers in crude drugs and extracts. The quantification and the method validation of curcumin have not yet been reported in  C. longa  which can be utilized for the proper standardization of the plant.

Validated high-performance thin-layer chromatographic analysis of curcumin in the methanolic fraction of Curcuma longa L. rhizomes