Modified Starch
Modified starch, also called starch derivatives, is prepared by physically, enzymatically, or chemically treating native starch to change its properties. Modified starches are used in practically all starch applications, such as in food products as a thickening agent, stabilizer, or emulsifier; in pharmaceuticals as a disintegrant; or as a binder in coated paper.
Starches are modified to enhance their performance in different applications. Starches may be modified to increase their stability against excessive heat, acid, time, cooling, or freezing; to change their texture; to decrease or increase their viscosity; to lengthen or shorten gelatinization time, or to increase their visco-stability.
G-Luckey Modified starch manufacturing process
Pre-gelatinize Reaction：
Starch slurry pump to reaction tank with speed adjustable agitator, then add chemical agent, start stirring and reaction begin, the temperature of the slurry is controlled via external circulation plate heat exchanger, at the same time measure the PH value.
Washing：
While the reaction reaches the required extent, pump the slurry to a temporary storage tank, the reacted starch slurry goes through the rotary filter and flow meter after quantity measurement enters 8 stages hydro cyclone washing battery to start countercurrent washing, the freshwater will be added from the last stage. The residue of chemicals will be removed away from the starch slurry. The overflow of stages 1, 2, and 3 will go through starch recovery, the overflow waste will be sent to the wastewater treatment plant.
Dewatering, Drying and Packing:
The bottom flow of the last stage is the refined modified starch with a concentration 20~21°Be. It will be pumped to a high-level storage tank, then it will be dewatered to a 36% water content starch by peeler centrifuge before sending to flash air drying system via a screw conveyor. The dry product will pass through a 120~160 mesh grading sieve. The undersize product will be weight measured and bagged to the final product, and the oversize product will be sent to the superfine mill.