Description: A pre-gelatinized - acid hydrolysis - esterification ternary complex starch preparation method and its application, including the following steps:. A take esterification agent 2g-4g dissolved temperature is 25 ℃ -40 ℃ anhydrous ethanol 120mL -150mL, and after the addition of 38% parts by mass of hydrochloric acid 0.05g-0.15g, and then water was added 15mL-30mL; b 100g starch dry basis is taken, and it is slowly added to the solvent prepared in step a. Stir the resulting homogeneous slurry;. c homogeneous slurry prepared in step b using temperature desolventizing while pre-gelatinized and acid hydrolysis, desolventizing temperature is 55 ℃ -80 ℃, desolventizing time of 0.5 h-2h; the reaction temperature and then, at a high temperature pre-gelatinized, acidolysis, and esterification, the reaction temperature was 120 ℃ -160 ℃, the reaction time was 2h-5h;. d The cooled product obtained in step c , obtained after crushing along with pre-gelatinized starch, acid hydrolysis of starch, esterified starch, modified starch multiple properties.
DOI: C08B31 / 00 (2006.01) I; A23L1 / 09 (2006.01) I; A23L1 / 035 (2006.01) I; A23L1 / 19 (2006.01) I