The present invention discloses a preparation method of
polygonum multiflorum cis and trans-stilbene
glycoside reference substances. The method comprises the steps of: (1)
drying and crushing a
polygonum multiflorum medicinal material, adding an
ethanol solution for extraction, filtering the extract, and concentrating the filtrate to a state without
alcohol taste, so as to obtain a concentrated solution; (2) adding
petroleum ether to the concentrated solution for extraction, adjusting the pH value of a water phase after extraction to 9-11, adding
ethyl acetate for extraction, concentrating the
ethyl acetate phase to obtain an extract; (3) separating and purifying the extract by a semi-preparative
high performance liquid chromatography, wherein the chromatographic conditions are as below: a
chromatographic column of Shim-pack PREP-ODS column, a mobile phase of
acetonitrile-water, volume ratio of 25:75, and detection
wavelength of 320 nm; collecting chromatographic peaks, detecting purity and merging the same fractions, so as to isolate cis-stilbene and trans-stilbene
glycoside reference substances. The high purity trans-stilbene
glycoside monomer and cis-stilbene glycoside
monomer prepared by the invention provide pure substances for physiological activity tests.