Removal Of Reaction Byproducts And Impurities From Caramel Color And A Shelf Stable Caramel Color Concentrate
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United States of America Patent
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Issued Date -
Oct 6, 2011
app pub date -
Mar 22, 2011
filing date -
Mar 30, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Caramel color concentrates are prepared by subjecting a solution of caramel color to ultrafiltration through a semi-permeable membrane having a Molecular Weight Cut Off (MWCA) of no greater than 3000 Daltons to retain caramel solids, but remove 4 MeI and other salts. After ultrafiltration, the retentate is subjected to an acidifying step to convert remaining impurities into salts which are then removed. A shelf stable concentrate is obtained having color bodies with a wide range of molecular weight.
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