MCQ
Alginic acid is obtained from:
- ARed algae
- BGreen algae
- CDiatoms
- DBrown algae
Explanation:
Alginic acid is also called as Algin or Alginate.
It is an anionic and hydrophilic polysaccharide present in the cell walls of brown algae i.e.
Phaeophyceae. It is a linear copolymer made up of residues D - mannuronic acid and L - glucuronic acid.
In brown algae, the cell wall consists of cellulose and alginic acid.
Cellulosic wall is covered from outside by a gelatinous coating of Algin.
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