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QUALITATIVE DETERMINATION OF BIOLOGICALLY ACTIVE CONSTITUENTS IN MEDICINAL PLANT CRUDE EXTRACTS BY THIN LAYER CHROMATOGRAPHY

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Abstract (2. Language): 
TLC is an analytical technique used for the qualitative and quantitative evaluation of Plant extracts. Qualitative determination by thin-layer chromatography of the biologically active and/or characteristic constituents of dried hydroethanolic or ethanolic extracts of the following three medicinal plants is reported: Emblica officinalis Gaertn., Withania somnifera L., Ocimum sanctum L. The chromatographic separation was carried out on silica gel 60 F254 TLC plates. Toluene : Ethyl acetate : Acetic acid : Formic acid (20:45:20:5, v/v/v/v), Hexane : Isopropanol (8:2, v/v), Toluene : Ethyl acetate (9.9:0.1 v/v) as the mobile phase. Detection was carried out with keeping in Iodine chamber, under UV light or Dragendorff's reagent and Vanillin Sulphuric acid. The method is rapid, simple, and suitable for routine qualitycontrol analysis of plant extracts.
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