Pregelatinization Gelatinization

Pregelatinized Starches. Suspensions of starches and starch derivatives can be gelatinized/cooked and dried to yield a variety of products that can be dispersed in cold water to yield pastes comparable to those obtained by cooking granular starch products. These products are made for convenience of use. 

Tablet binder Substance used to cause adhesion of powder particles in tablet granulations Acacia, alginic acid, carboxymethylcellulose sodium compressible sugar, ethylcellulose gelatin, liquid glucose, metylcellulose povidone, pregelatinized starch...

Lactose USP Dicalcium phosphate Ethylcellulose Magnesium stearate MCC Sucrose, dextrose Poloxamer 188 PEG 3350 CAP HPC HPMC Bentonite Pregelatinized starch Starch USP, Corn Gelatin USP Povidone Sodium starch glycolate Polyplasdone XL Sorbitol CMC Na... 

A number of starch modifications are used in pharmaceutical applications. Pregelatinized or compressible starch has been chemically or mechanically processed to rupture all or part of the granules in water. It is then dried to yield an excipient material suitable for direct-compression formulations. Sterilizable maize starch contains magnesium oxide (not greater than 2.2%) and has been chemically or physically treated to prevent gelatinization on exposure to moisture or steam sterilization. Soluble starch results when potato or maize starch has been chemically treated to destroy the gelatinizing ability of starch. 

Pregelatinized waxy maize starch (PregePlow CH 20 adipic acid-reticulated, acetic anhydre-stabilized and drum drying-gelatinized) was supplied by Roquette Freres (Lestrem, France) and crystalline sucrose by Merck. 

The drum dryer is also extensively used to dry and gelatinize or cook starch slurries, such as potato, rice, - wheat, " maize, com," soybean-banana, and cowpea slurries to produce pregelatinized starch for instant foods. Nonstarch, low-sugar foods, such as tomato puree, milk, skim milk, whey, beef broth, yeast," coffee, and malt extract, have also been successfully dried on a drum dryer. Heat-sensitive products such as pharmaceuticals and vitamin-containing products can be dried in a vacuum drum dryer. 

Pregelatinized Heat treatment in the presence of water to enhance starch gelatinization Gelatinizes starch Instant starches or cold water dispersible used in beverages and puddings ... 

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