Abstract
A simple, sensitive, and rapid high-performance thin layer chromatographic (HPTLC) method has been established for estimation of piperine in commercial Ayurvedic formulations and in the fruits of Piper nigrum Linn, and Piper longum Linn. Chromatography was performed on aluminum foil HPTLC plates coated with 0.2 mm layers of silica gel F 254 , with hexane-acetone 6.5: 3.5 ( v/v ) as mobile phase. The development distance was 76 mm, the temperature 25 ± 5°C, and the chamber was saturated for 5 min. Piperine was quantified at 340 nm, its wavelength of maximum absorbance. Under the conditions used the R F of piperine was 0.33 and the limit of detection (LOD) was 4 ng per zone. The calibration plot was linear in the range of 10 to 60 ng per zone with a correlation coefficient of 0.9996. Recovery was in the range 98.76 to 100.70%. This HPTLC method was found to be reproducible, accurate, and precise and could be used to detect piperine at nanogram levels. The method is a very simple and cost-effective means of ...
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