The invention belongs to the technical field of
medicine and health care, and particularly relates to a preparation method of an
American ginseng root water extract rich in rare
ginsenoside and application of the
American ginseng root water extract in improving the immune and anti-tumor direction. The preparation method comprises the following steps: step 1, carrying out
superfine grinding on
American ginseng, and sieving; step 2, adding the American
ginseng powder into water, and then adding compound
enzyme for enzymolysis to obtain enzymatic
hydrolysate; s3, after the enzymolysis is finished, heating the enzymatic
hydrolysate, extracting twice, and mixing after the extraction is finished; and S4, inoculating compound
lactic acid bacteria into the
mixed solution, fermenting to obtain a
fermentation solution, blending, and sterilizing to obtain the American
ginseng afterbiogen beverage. According to the invention, a new physical-biological combined process is adopted, and crushing, enzymolysis, extraction,
fermentation and blending are carried out, so that the American
ginseng metagen beverage rich in rare
ginsenoside is obtained, and the rare
ginsenoside has a remarkable anti-tumor effect and higher activity.