The invention discloses a
solanum lyratum extract, and an anticancer
medicine comprising the
solanum lyratum extract. The
solanum lyratum extract is prepared through steps that: a
solanum lyratum medicinal material is extracted by using
ethanol, wherein the
solanum lyratum medicinal material is processed through
ethanol refluxing extraction, the recovered
solvent is evaporated until dried, such that an
ethanol extract is obtained; the extract is refined, wherein the ethanol extract is dissolved in water to form a solution, the solution is absorbed by using a weak acidic cation exchange
macroporous resin column and is orderly eluted by using ethanol and hydrochloric ethanol, the hydrochloric ethanol eluent is collected and is neutralized by using
ammonia water, and the collected product isdesalted, such that the
solanum lyratum extract is prepared. The solanum lyratum extract contains 1% to 60% of
steroid alkaloid. According to the invention, weak acidic cation exchange
macroporous resin is adopted,
steroid alkaloid is specifically accumulated from various components of solanum lyratum. The component of accumulated
steroid alkaloid is simple. As a result of experiments, the substance has a substantial anticancer
potency, and the anticancer
potency is greatly higher than that of solanum lyratum aqueous crude extracts and
steroid saponins extracted by using n-butyl
alcohol in prior arts.