PURIFIED ALGINIC ACID OR SALT THEREOF
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United States of America Patent
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Issued Date -
Nov 10, 2011
app pub date -
Jan 19, 2010
filing date -
Jan 20, 2009
priority date (Note) -
Abandoned
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Abstract
There is provided a purified alginic acid or a salt thereof having a low degree of coloration and a process for producing the same.A depolymerized alginic acid or a salt thereof having a weight-average molecular weight of 300,000 or lower, wherein a degree of coloration, which is defined as the difference in absorbance between 420 nm and 720 nm when a 5% by weight aqueous solution of the alginic acid or a salt thereof is subjected to absorption spectrophotometry using a 1-cm cell, is 0.040 or lower.
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