Inorganic Catalysis For Ginsenoside Glycon

In this paper, the ginsenoside of protopanaxadiol type(PPD) was catalysised by Fe3+and the catalysate was separated by silica gel column gradient elution. The catalysis of Fe3+to other glycosides was also reserched.Fe3+and the catalysate was catalysated by AB-8macroporous resin. Fe3+was eluted with5times the column volume of deionized water and to elution ginsenoside with5times the column volume of83%ethanol.The results showed that Fe3+can be completely separated.The catalysate was purified by silica gel column and5substance was obtained which detected by HPLC as follows:Rh2、20(S)-Rg3、20(R)-Rg3、Rk1and Rg5.Rg3was the main catalysate The pure Rg3was obtained at the proportion of eluant V(chloroform):V(methanol)=8.5:1.5.Other reserch showed that:amidulin can be hydrolysised by Fe3+, the catalysis of Fe3+to ophiopogonpolysaccharide was feeble and Fe3+had no effect on CMC and pNP. ginsenoside Rf and Rg3, ornithogalum saponin, astragalus saponin can all be catalysised by Fe3+. Which proved that Fe3+is selective.