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A rapid, accurate and simple high performance thin layer chromatography method for quantitative estimation of andrographolide in Andrographis paniculata is described here. The assay combines separation of andrographolide on silica gel 60 F 254 HPTLC plates followed by scanning of the spots at 232 nm using a Camag Scanner 3. Thirty germplasm collections of Andrographis paniculata were evaluated for andrographolide content by this method. Andrographolide content ranged from 1.14% to 2.60%.
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Raina et al. (2007) studied this question.
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