1. Raw materials

Carrageenans are a natural component of certain species of red marine algae in the Gigartinaceae, Solieriaceae, Phyllophoraceae, Hypneaceae, Furcellariaceae, Rhabdoniaceae, Rhodophyllidaceae and some Rhodomelaceae families. .

The biology of carrageenan-producing species varies according to the family of algae to which they belong.

In general, Gigartinaceae have triphasic, isomorphic or heteromorphic life cycles, with alternating haploid and diploid generations, while Solieriaceae also have a triphasic...