Definition of alginic acid in English:

alginic acid

Syllabification: al·gin·ic ac·id
Pronunciation: /alˌjinik ˈasid


  • An insoluble gelatinous carbohydrate found (chiefly as salts) in many brown seaweeds. The sodium salt is used as a thickener in foods and many other materials.
    More example sentences
    • Food, cosmetic and pharmaceutical industries use three common types of hydrocolloid extensively when thickening or gelling properties are required: carrageenan and agar from red seaweeds and alginic acid from brown seaweeds.
    • Under similar conditions the polysaccharides with carboxyl groups, such as alginic acid and polygalacturonic acid, also photodecomposed.
    • Their main component, alginic acid, is converted into calcium salts (which are water-insoluble) and sodium salts (which are water-soluble).



Pronunciation: /ˈaljəˌnāt/
More example sentences
  • After the three flights, we measured the size of the pectoral muscle of the bird using a body mold in dental alginate, after which the bird was released.
  • Currently, they are developing a method to graft alginate, which is produced by brown seaweed, to cotton fibers.
  • Other gums used to a lesser extent might include guar, xanthan and alginate.


late 19th century: alginic from alga + -in1 + -ic.

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