Answer: carrageenan

AnswerCrossword Clue
carrageenana colloid prepared from red algae, used in food processing, pharmaceuticals etc also CARAGEENAN, CARRAGEENIN, CARRAGHEENAN, CARRAGHEENIN
carrageenanA substance extracted from red and purple seaweeds, consisting of a mixture of polysaccharides. It is used as a thickening or emulsifying agent in food products