Carrageenan is a prominent product in the distribution of food additives due to its high thickening and gelling power, depending on the source from which it is extracted and the exact processing methodology: in fact, there are different galactans (i.e. polymers of D-galactose) derived from carrageenan, and called carrageenans, the most important and exploited of which are defined as Kappa, Iota and Lambda. Carrageenan is, in addition to this, a stabilizer and an emulsifier, and as an additive it is identified by the acronym E407. It is not thermoreversible, unlike Agar-Agar.