Importance

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Abstract

The present invention provides a method and system for continuous separation and purification of ginsenosides, whereby supercritical fluid technology is used to feed Ginseng extract liquor and supercritical solvent continuously into a separation tank at 20-30 Mpa and 40-60° C., such that ginsenosides can be separated from Ginseng extract liquor; then, ginsenosides are continuously fed to a purifying tank for obtaining highly pure ginsenosides; this system comprising: a holding tank, used to accommodate Ginseng extract liquor; a separation tank, connected with the holding tank, fitted with an electric heater, and used to separate ginsenosides from Ginseng extract liquor; a supercritical fluid vessel, connected with the separation tank to provide supercritical fluid; a high-pressure metering pump, connected between the supercritical fluid vessel and separation tank; a reactant metering pump, connected between the holding tank and separation tank; a precooler, connected between the supercritical fluid vessel and high-pressure metering pump; two preheaters, connected separately between the high-pressure metering pump, reactant metering pump and separation tank; a purifying tank, connected with the separation tank, fitted with an electric heater, and used to purify ginsenosides; two temperature controllers, connected separately with the electric heater in the separation tank and purifying tank.

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First Claim