Abstract Kappaphycus alvarezii is one of the two main species seaweed commodities cultivated in Indonesia. K. more popularly known as Eucheuma cottonii , belongs to red algae. This most important commercial sources carrageenans, a family gel-forming, viscosifying polysaccharides. Carrageenans are used gelling, thickening, and stabilizing agents variety applications, especially food products suc...