1975 Volume 95 Issue 7 Pages 809-814
A new method for the determination of glycyrrhizin in liquorice roots was devised by the use of thin-layer chromatography over silica gel sintered rod with hydrogen flame ionization detector. It was found that glycyrrhizin was specifically absorbed on polyamide powder, and the test solution had to be prepared especially. Typical chromatograms obtained by this method are shown. Determination of glycyrrhizin in liquorice roots from China, Afghanistan, Iran, and U.S.S.R., and their processed goods on the Japanese market was made and the recovery rate was found to be more than 95% on the average.
