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Stability Evaluation Of Beetroot Colour In Various Pharmaceutical Matrices

Author(s): S. R Pai, Priscilla D'Mello

A red pigment was obtained from dried juice of Beta vulgaris Linn, which exhibited a λmax of 533 nm and 484 nm indicative of the presence of betacyanins (red) and betaxanthins (yellow), respectively. The influence of temperature and pH on the stability of the red pigment in pharmaceutical liquid oral bases was investigated. The colour was also evaluated for its stability in its adsorbed form on microcrystalline cellulose, lactose and dextrose. The colour was found to exhibit highest stability in adsorbed form with microcrystalline cellulose.


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