Method for manufacturing and fractionating gelling and non-gelling carrageenans from bi-component seaweed
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United States of America Patent
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Issued Date -
Mar 31, 2005
app pub date -
Jun 16, 2004
filing date -
Dec 28, 2001
priority date (Note) -
Abandoned
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Abstract
A method for the manufacture of carrageenans from bi-component seaweed material, wherein the seaweed is subjected to 1) a heterogeneous reaction step in an aqueous alkaline medium having specific values of alkali concentration, temperature and salt concentration; 2) separation of the solid material from the liquid phase; 3) fractionation of the lambda-family carrageenans from the solid material obtained in 2) by treatment with an aqueous medium; and 4) optionally further purification steps, provides for efficient production and separation of kappa-family carrageenans and lambda-family carrageenans respectively.
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