Preparation method of porous starch octenyl succinate

The invention discloses a preparation method of porous starch octenyl succinate. The preparation method mainly comprises the following steps: dissolving starch in water to obtain starch milk; regulating the pH value, adding raw starch digesting amylase, and reacting at a certain temperature for some time; further regulating the pH value and the temperature, slowly adding octenyl succinic anhydride diluted by anhydrous ethanol, and reacting for some time; and after the reaction is completed, washing the reaction solution with anhydrous ethanol, collecting solids, drying, and pulverizing to obtain the porous starch octenyl succinate. The porous starch octenyl succinate prepared by the invention combines the double effects of porous starch and starch octenyl succinate and thus has good adsorptivity and embedding property as well as good emulsibility, thereby greatly improving the added value of starch, widening the application range of starch and having favorable popularization potentials. 本发明公开了种多孔辛烯基琥珀酸淀粉酯的制备方