Method of treating pollen for pulverization thereof and extraction of essence therefrom

摘要

A process for treating pollen which comprises freezing said pollen grains by immersing in low temperature liquefied gas so as to make them low temperature brittle, and pulverizing said pollen grains while they are still in the low temperature brittle state by means of a pulverizer of impact type, or further adding aqueous ethanol solution as the solvent to the pollen grains treated in the above manner, and after extracting the effective ingredients of said pollen grains at room to elevated temperatures with stirring, removing the residue and then concentrating the clear extract thus obtained under vacuum.