Talk:Alginic acid

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what is the formula of alginic acid? structure of the alginic acid?

ill add this next week.

Hi, how we can solublise an alginic acid? do you known any method? hanks in advance

Hi.

In the text it states that alginate (which is the salt-form of alginic acid, NOT the same as alginic acid) is insoluble in water, but this is not the case. It does precipitate at low pH though. If you do a search for Alginate + solubility in google or in scientific litterature you'll see that the solubility varies with pH. I've worked with alginates for ~10 years and it is not a problem to dissolve commercially available alginates (i.e. from SIGMA) at least 20mg/ml in water. Even bacterial alginates from Azotobacter or Pseudomonas spp. with high molecular weight can be dissolved at this concentration, however they form extremely viscous solutions.

Tonje.

I propose deleting "Purified forms of alginate are used in antacid preparations such as Gaviscon®, Bisodol®, Asilone®, and Boots Own® tablets."

looks naff should read is used in many pharmaceuticals as part of a modified release system. What does purified forms mean 90% 95% 99% Pharmaceuticals only use uncontaminated items anyway so purified seems a little superfluous. --130.36.75.21 11:30, 17 August 2007 (UTC)