Sugar – starch – and carbohydrates – Processes – Carbohydrate manufacture and refining
Patent
1991-05-08
1993-02-23
Morris, Theodore
Sugar, starch, and carbohydrates
Processes
Carbohydrate manufacture and refining
127 67, 127 69, 525 56, 525 62, C08B 3000, C08F 1606, C08F 800, C08G 6891
Patent
active
051886740
ABSTRACT:
A continuous coupled jet-cooking/spray-drying process for processing inherently water-dispersible or water-soluble crystalline polymers, such as starches, polygalactomannan gums, and fully hydrolyzed polyvinyl alcohols, is disclosed. It involves the steps of: (a) forming a slurry or paste of the polymer and water, (b) jet-cooking the slurry or paste with steam at a temperature sufficient to fully disperse or solubilize the polymer, (c) immediately conveying and introducing under elevated temperature and pressure the jet-cooked dispersion or solution into a nozzle of a spray-dryer chamber, (d) atomizing the jet-cooked dispersion or solution through the nozzle, (e) drying the atomized mist within the spray-dryer chamber at a temperature sufficient to dry the polymer; and (f) recovering the dried polymer as a water-dispersible or water-soluble powder.
High amylose starches (above about 40% amylose) prepared by this process are characterized in that the starch is substantially non-crystalline and substantially non-degraded. Starch mixtures, mixtures of high amylose starches and other starches, gums, or polyvinyl alcohols can be co-processed.
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Eden James L.
Kasica James J.
Hailey P. L.
Kelley Margaret B.
Morris Theodore
National Starch and Chemical Investment Holding Corporation
Szala Edwin M.
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