초록 ▼

Physically modified starch products are prepared using pressure and heat such as by extruding starting material starch which optionally can be admixed with gums and/or surfactants. The properties of the products can be adjusted by varying the moisture content of the materials in the extruder and the

Physically modified starch products are prepared using pressure and heat such as by extruding starting material starch which optionally can be admixed with gums and/or surfactants. The properties of the products can be adjusted by varying the moisture content of the materials in the extruder and the temperature and pressure at a die plate provided at the discharge end of the extruder. The screw elements in the extruder are selected with the goal of using enough mixing elements at the discharge end to keep the pressure in the extruder barrel as high as possible over a short distance. The physically modified starch products are made up of partially to fully cooked starch and some raw starch particles. They are highly dispersible in cold or hot water with hot or cold swelling viscosity.

대표청구항 ▼

[ What is claimed is:] [1.] A process for making a physically modified starch product having hot or cold liquid dispersibility by introducing into an extruder provided with a die plate starting materials consisting essentially of a starting material starch and optionally i)a gum and a surfactant or

[ What is claimed is:] [1.] A process for making a physically modified starch product having hot or cold liquid dispersibility by introducing into an extruder provided with a die plate starting materials consisting essentially of a starting material starch and optionally i)a gum and a surfactant or ii)a gum or a surfactant, and sufficient added water to raise total moisture to a moisture content from about 18% to about 45% by weight, and extruding the starting materials and water at a die plate temperature from about 140.degree. F. to about 285.degree. F. and a die plate pressure from about 200 to about 2500 psig, thereby forming a substance comprised of gelatinized, partially gelatinized and ungelatinized starch granules in a heterogeneous admixture.