Process for preparing modified starch
A technology of starch and modification, applied in the field of preparation of modified starch, can solve the problems of difficult product quality control, unsatisfactory properties, difficult reaction control, etc., and achieves reduced viscosity, enhanced affinity and reduced temperature dependence Effect
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Embodiment 1
[0028] After the potato starch raw material is dried to moisture<15% in the microwave dryer, the filling rate of the starch in the vibrating ultrafine pulverizer is 40%, and 800g potato starch (on a dry basis) and a 25kg steel bar are weighed in the vibration In the type ultrafine pulverizer, the diameter of the steel rod is 20mm. Then, the temperature of the vibrating ultrafine pulverizer is controlled below 10° C. for ultrafine pulverization. After crushing for 30 minutes, pass through 500 meshes to obtain a modified potato starch product.
Embodiment 2
[0030] a. Dry the wood department starch raw material in a microwave dryer until the moisture is less than 10%;
[0031] b. The filling rate of starch in the vibrating ultrafine pulverizer is 50%, 1 kg of starch by weight (on a dry basis), and 80 kg of one or more than one mixture of steel balls with a diameter of 25 mm are added to the crushing equipment crush;
[0032] c. The temperature of the crushing equipment is controlled below 15°C, and the crushing time is 20 hours;
[0033] d. Pass the modified starch crushed in step c to 600 mesh.
Embodiment 3
[0035] a, drying the cornstarch raw material in a microwave dryer until the moisture content is less than 8%;
[0036] b. The filling rate of starch in the vibrating ultrafine pulverizer is 80%. According to the weight ratio of 1.5kg of starch (on a dry basis), 40kg of one or more mixtures of 5mm alumina balls are added to the crushing equipment for crushing;
[0037] c. The temperature of the crushing equipment is controlled below 12°C, and the crushing time is 30 hours;
[0038] d. Pass the modified starch pulverized in step c to 400 mesh.
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