The invention provides a method of improving identification for a pseudo-
ginseng medicinal material based on a thin-layer
chromatography. The method comprises the following steps that step 1), 0.5 g of medicinal material
powder is taken, weighed out accurately, and placed in a conical flask with a plug, 20 mL of n-butyl
alcohol saturated by water is added, after close plugging, ultrasonic
processing and filtering, 40 mL of water saturated by n-butyl
alcohol is added into filtered liquid, and the mixture is shaken uniformly and subjected to layering; n-butyl
alcohol liquid is taken and evaporated to be dry, 1 mL of methyl alcohol is added for dissolving residues, and the mixture is taken as a
test solution; step 2), a
ginsenoside Rg1
reference product, a
ginsenoside Re
reference product, aginsenoside Rb1
reference product and a notoginsenoside R1 reference product are taken, methyl alcohol is added, and a reference product solution is obtained; step 3), according to the thin-layer
chromatography method experiment, 1 microliter of the
test solution and 1 microliter of the reference product solution are sucked and respectively dotted on the same
silica gel G
thin layer plate,
dichloromethane-absolute ethyl alcohol-water-glacial
acetic acid is taken as a developing agent, and the solutions are developed, taken out and dried; step 4), a color developing agent is sprayed, and heating is conducted until the developed color of spots is clear.