The invention relates to a technology for jointly extracting
synephrine,
hesperidin and PMFs (polymethoxy latednavones) from
fructus aurantii immaturus. The technology comprises the following steps: a, smashing
fructus aurantii immaturus, and subpackaging equal quantity of the smashed
fructus aurantii immaturus in a
percolation tank I and a
percolation tank II respectively; adding a
dilute acid solution in the
percolation tank I, soaking, stirring and percolating; adding
effluent liquid into the percolation tank II, soaking, stirring and percolating; mixing the
leachate, performing vacuum concentration, adsorbing
synephrine by a resin column, desorbing and collecting a
desorption solution by using weak aqua
ammonia, and performing
vacuum drying to obtain dried
synephrine; b, washing fructus aurantii immaturus dregs to be neutral with clear water, soaking with a dilute strong base solution, stirring, percolating, performing vacuum concentration, adding absolute
methanol or absolute ethyl
alcohol, performing still standing, filtering, performing vacuum concentration on the filtrate, and recycling
alcohol to obtain a mother solution; c, adsorbing PMFs from the mother solution through the resin column and a
chromatographic column, enabling methyl
alcohol or ethyl alcohol to pass through the columns for desorbing under static pressure, collecting the stripping liquid, performing vacuum concentration, and recycling an eluent to obtain PMFs; acidizing the
effluent liquid passing through resin, standing, and performing
devitrification to obtain dried
hesperidin.