ι-Carrageenan

Iota-Carrageenan is a gelling sulfated galactan extracted from red seaweed (typically Gigartina stellata and Chondrus Crispus).The structure of all carrageenans consists of a strictly alternating masked repeating unit of (1-3) linked α-D-galactose and (1-4) linked β-D-galactose. The α-linked galactose occurs as a 3,6-anhydro-2-sulfate unit and the β-linked sugar occurs as the 3-sulfate