Ligroin (60~90 deg.C), edible alcohol (95%) and distilled water (or cool boiled water) are used as solvents. First, one solvent is put into pollen to extract one kind of pollen essence, and then another solvent is put into the filter residue for extracting, so in a row, many kinds of pollen essences may be produced. By using the the invented process of extracting various kinds of pollen essences from pollen step by step, the active constituents of pollen can be fully used, wasting little and serving wide, and carve out a way of the comprehensive utilization of pollen. |