Thermal modified starch

The present invention relates to a thermally modified starch produced by an acid process, characterized in that the starch has a free citrate content of less than 0.05% and an immobilized citrate content of between 0.05% and 0.15%, the highest puffing temperature of starch granules obtained by analysis using fast RVA for 2-17 minutes is greater than 100 DEG C, preferably between 100 DEG C and 140 DEG C, and the highest puffing temperature of starch granules obtained by analysis using fast RVA for 2-17 minutes is greater than 100 DEG C, preferably between 100 DEG C and 140 DEG C, preferably between 100 DEG C and 140 DEG C. And/or the precipitate volume is between 20 mL and 65 mL, preferably between 25 mL and 40 mL. 本发明涉及一种通过酸法工艺生产的热改性淀粉，其特征在于，该淀粉的游离柠檬酸盐含量低于0.05％，并且固定柠檬酸盐含量介于0.05％-0.15％之间，使用快速RVA进行2分钟-17分钟分析所得的淀粉颗粒最高膨化温度高于100℃、优选介于100℃-140℃之间，并且和/或者沉淀物体积介于20mL-65mL之间、优选介于25mL-40mL之间。