Heterogenous carrageenan manufacturing process with recovery of alkali
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United States of America Patent
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May 5, 2009
Grant Date -
Apr 14, 2005
app pub date -
Dec 23, 2002
filing date -
Dec 28, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved process for the manufacture of gelling carrageenans from seaweed, wherein the seaweed is subjected to a heterogenous reaction for alkali modification of at least one carrageenan precursor to at least one gelling carrageenan followed by a recovery process. In the recovery process one or more lye recovery sections for the recovery of aqueous alkaline medium are used and there is reusing in the heterogeneous reaction of used aqueous alkaline medium after processing of incoming seaweed and for each recovery section there is reusing of at least part of the used lye recovery solution to compensate for the deficiency of alkaline medium as a result of the heterogeneous reaction.
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