[Quantitative determination of vanillic acid in rhizoma Picrorhizae by TLC-scanning].
OBJECTIVE
To establish a method to determine the content of vanillic acid in Rhizoma Picrorhizae.


METHODS
The content was determined by dual wavelength TLC-scanning.


RESULTS
The peak area of vanillic acid is reproducible in 4 hours; recovery 96.5%; RSD-3%; RSD of duplicate experiment-5%.


CONCLUSIONS
A thin-layer chromatographic scanning method has been developed for determining the content of vanillic acid. The method is reproducible, workable and reliable.
Yu
J
J
Institute of Traditional Chinese Medicine and Materia Medica of Jiangxi Province, Nanchang 330077.
Song
Y
Y
Cheng
Y
Y
D002855:Chromatography, Thin Layer; D003720:Densitometry; D032261:Picrorhiza / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011786:Quality Control; D014641:Vanillic Acid / Q000032:analysis*
D014641:Vanillic Acid