Composition containing saponins of Panax ginseng as active ingredient

A composition containing ginseng saponin as an active ingredient which is useful for extending the lifespan of cells and promoting differentiation of cells, wherein the ginseng saponin is prepared by:

• exposing the ginseng to steam under a pressure of 1.1 kg/cm2 while removing moisture at 121° C. for 10 minutes using an automatic temperature and humidity control device with a porous shelf (step S1);
• continuously injecting air into the ginseng subjected to the step S1 and cooling the ginseng to 90° C. or lower (step S2);
• repeating the steps S1 and S2 two times (step S3);
• cooling the ginseng to room temperature in an automatic temperature control device and pulverizing the ginseng to a particle size of 1 mm or less, after step S3 (step S4);
• extracting the saponin by adding 80% ethyl alcohol to the ginseng subjected to the step S4, and concentrating the extracted saponin (step S5);
• preparing a suspension by dissolving the concentrated saponin in ethanol and adding sterilized water, after step S5 (step S6);
• adding the suspension to and reacting the suspension with a pectinase enzyme solution drop by drop, after step S6 (step S7);
• precipitating the solution subjected to the reaction of step S7 by centrifugation (step S8);
• dissolving the generated precipitate in ethyl alcohol (step S9);
• suspending the dissolved precipitate by adding sterilized physiological saline solution (step (10);
• filtering the suspended precipitate (step S11);
• and
• resuspending the precipitate in sterile physiological saline solution (step S12).