Hydrophobic starch with high jetting property and preparation method thereof

The invention relates to the technical field of starch modification and in particular relates to hydrophobic starch with a high jetting property and a preparation method thereof. According to the hydrophobic starch, fused silicon dioxide is used as a flowability modifier and the control on an adding amount of the fused silicon dioxide is combined; after fused silicon dioxide treatment is adopted,a hydrophobic coupling agent is used for treating; the control on a dosage of the hydrophobic coupling agent is combined and the limitation on conditions of a preparation technology is adopted, so that the hydrophobic property and the flowability of the starch are greatly improved and the energy consumption is reduced. Specifically, the repose angle of corn starch can be reduced to 20 degrees or lower; the activation index of the modified corn starch reaches 97 percent or more; the comprehensive performance including the flowability and the hydrophobic property of the corn starch is improved. 本发明涉及淀粉改性技术领域，尤其是种高喷流性疏水淀