Abstract: A liquid oil and fat ingredient or others are carried by pores of a porous carrier composed of porous starch grain obtained by reacting an enzyme having raw starch digestive activity onto the starch. With starch being used as porous carrier, the powder preparation according to the present invention is not harmful to the human body, it can be supplied continuously in great volumes, manufactured cheaply without difficult processing, and moreover, being completely biodegradable, this powder preparation does not cause any environmental problems. It can be used in various industrial fields.