Abstract
Picrorhiza kurroa is an important herb in Indian medicine and contains cucurbitacins, flavonoids, phenolics, iridoid-glucoside and their derivatives as active constituents for the treatment of indigestion, fever, hepatitis, cancer, liver and respiratory diseases. Extensive use of P. kurroa needs detailed analysis and recognition of chemical diversity, is of great importance to evaluate their role as quality control markers. In the present study, comprehensive metabolic profiling of crude extracts of leaves and rhizomes of P. kurroa was carried out using NMR, HPTLC and LC-MS/MS. Primary and secondary metabolites were unambiguously identified along with a new report of monoterpenic glycoside (1-β-D-glucopyranosyl)-8-hydroxy-3,7-dimethyl-oct-2(E),6(E)-dienoate) in P. Kurroa. Significant qualitative differences with respect to the secondary metabolites were noticed between the leaves and rhizomes tissues. Leaves contained more cucurbitacins and flavonoids while iridoids were present more in rhizomes. The comprehensive chemical profiling is expected to give an idea of chemical diversity and quality of P. kurroa, for their ultimate utilisation in various applications.
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