The invention discloses a method for improving the purity of
mogroside V in
mogroside. Fresh
siraitia grosvenorii or dried
siraitia grosvenorii serves as raw materials. The method includes the steps of 1, extraction, 2, preconcentration, 3, enzymolysis, 4, primary filtering, 5, resin adsorption and
elution, 6, concentration and secondary filtering, 7, resin column desalting, 8, resin column decoloring, 9, further
activated carbon decoloring, and 10, sterilization and
drying. An adsorption column is used for adsorbing main effective substances in feed liquid, eluant is used for eluting the effective substances on the adsorption column, finally, the foreign smell of the eluant is removed through desalting resin,
pigment is removed through decoloring resin, impurities are further removed through
activated carbon adsorption, and the product is obtained after sterilization and
drying. The final product is
snow white, free of foreign smells, fresh and sweet in taste, lasting in later
sweetness, similar to white granulated
sugar and capable of being applied to
sugar substitute products and
weight loss and healthcare food, the
sweetness is 500-1000 times that of granulated
sugar, and meanwhile the calory is almost 0.