The application provides a preparation method of total saponins of Radix Fritillariae Thunbergii, which comprises the following steps: adding Radix Fritillariae Thunbergii into
ethanol to extract, and then concentrating under reduced pressure to obtain a crude extract; dissolving the crude extract in water, and then adsorbing the water on macroporous adsorption resin, and then eluting the macroporous adsorption resin with water and
ethanol; collecting the
ethanol eluate, and then concentrating under reduced pressure to obtain component 1; dissolving the component 1 in water, and then extracting with an
organic solvent; and
drying the water phase obtained by extraction under reduced pressure to obtain the total saponins of Radix Fritillariae Thunbergii. The application optimizes the extraction and purification method of the total saponins of Radix Fritillariae Thunbergii to a certain extent, shortens the preparation time of the total saponins, improves the content of the total saponins, and proves through
experimental research that the total saponins of Radix Fritillariae Thunbergii can treat the
nephrotic syndrome caused by adriamycin (ADR), improve the glomerular
filtration rate, reduce the glomerular
inflammation, and has a significant protective effect on the
kidney.