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Year : 2015  |  Volume : 36  |  Issue : 3  |  Page : 303-310

High performance thin layer chromatography qualitative densitometry as a sensitive method to assess shelf life of polyherbal formulations: A study on Hutabhugadi Churna

1 Department of Pharmacognosy, SDM Centre for Research in Ayurveda and Allied Sciences, Udupi, Karnataka, India
2 Department of Botany, SDM College, Udupi, Karnataka, India
3 Department of Chemistry, SDM College, Udupi, Karnataka, India
4 Department of Pharmacology, SDM Centre for Research in Ayurveda and Allied Sciences, Udupi, Karnataka, India

Correspondence Address:
K N Sunil Kumar
Senior Research Officer, SDM Centre for Research in Ayurveda and Allied Sciences, Laxminarayana Nagar, Kuthpadi, Udupi - 574 118, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0974-8520.182745

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Introduction: Measuring chemical stability of polyherbal formulations is very challenging due to diversity in phytochemical composition. As there are no comprehensive guidelines for stability testing of herbal products, there is a need for a sensitive tool to detect how the quality of herbal products varies with time under the influence of environmental conditions. Aims: To validate the employability of high-performance thin layer chromatography (HPTLC) for real-time stability of Hutabhugadi Churna (HC). Materials and Methods: The chromatograms were developed using toluene/ethyl acetate/formic acid (10:5:1) and ethyl acetate/formic acid (10:1) as a mobile phase for chloroform and ethanolic extract, respectively. The plates were scanned under 254, 366, 540 (pre-derivatization) and 540 nm (post-derivatization). Samples were analyzed immediately after preparation and after 3rd and 6th months of storage. Alteration of fingerprint profiles from the initial pattern, in terms of number of peaks, was employed as diagnostic tools. Percentage variation in composition at given period was calculated. Results: HC is found to be stable at room temperature up to 1.3 months using the method of calculation of 10% degradation period employing slope and intercept values for the initial, 3rd and 6th months' deviation in number of bands. The data obtained were subjected to regression analysis in context to number of bands obtained. The curve was found to be linear with R2 value of 0.89–0.96 supported by their tolerance range of 0.04–0.11. Conclusion: The proposed model is a new logic with prospects to become working method for stability assessment of polyherbal formulations under controlled conditions.

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