High-viscosity cold-water-swellable granular starch
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United States of America Patent
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Feb 12, 1991
Grant Date -
N/A
app pub date -
Mar 24, 1988
filing date -
Mar 24, 1988
priority date (Note) -
Expired
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Abstract
A cold-water-swellable granular starch which affords aqueous solutions or dispersions having high-viscosity and/or excellent clarity is provided. In one embodiment, the granular starch is made cold-water swellable by contact with aqueous alcohol, then derivatized with an .alpha.-halocarboxylic acid, and then isolated under condition which inhibit esterification of the granular starch, e.g. high pH, to afford a starch that has excellent paste clarity. In other embodiments, the cold-water-swellable granular starch is crosslinked to afford a starch that has very high paste viscosity.
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