单词	alginic acid
释义	alginic acid /alˈdʒɪnɪk / noun [mass noun] Chemistry 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.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). Origin Late 19th century: alginic from alga + -in1 + -ic.
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