Page 58 - Applied Pharmacognosy

Types of Chemical markers

TLC assay for quality control of ginger

(B.P.)

•Interpretation: Geranial shogaols
•The chromatogram obtained with the reference citral
solution shows in the lower half an intense red
zone (resorcinol) and in the upper half two violet Neral resorcinol
zones
(citral). resorcinol gingerols
Reference sample
•The chromatogram obtained with the test
solution shows below the resorcinol zone in the
chromatogram obtained with the reference
solution two intense violet zones (gingerols) and
in the middle, between the resorcinol and citral
zones in the chromatogram obtained with the