Table 1: TLC finger print of essential oils of aromatic plants.

PlantSpot (bands) Rf value and corresponding colors
1st2nd3rd4th5th6th7th8th

Thy0.51 (violet re)

Ta0.52 (violet red)0.45 (brown)0.35 (gray)0.23 (gray)

Cm0.96 (t violet)0.78 (blue)0.73 (gray)0.65 (blue)0.54 (violet)0.49 (blue)0.39 (blue)0.3 (blue)

Fv0.95 (blue violet)0.88 (violet)0.69 (gray)0.56 (violet)

Thy: thymol standard; Cm: Cymbopogon martinii; Fv: Foeniculum vulgare; and Ta: Trachyspermum ammi.