Читать книгу Biomolecules from Natural Sources - Группа авторов - Страница 79

Carrageenans are marine hydrocolloids obtained by extraction from some members of the class rhodophyceae. The carrageenans are a group of related linear and sulfated polymers. The most important members of this class are Chondrus crispus and Gigartina stellata. Carrageenans were mainly used as gelling and thickening agents. Only a few studies have dealt with carrageenans for controlled release tablets. These studies dealt only with drug delivery from tablets on a hydraulic press or from tablets that contain the carrageenans in a mixture with other excipients. A polysaccharide obtained from edible red seaweeds (Chondrus crispus). It is used in pharmaceutical formulations and cosmetics. As an anticoagulant, antithrombotic, antiviral, antitumor, immunomodulatory, immobiliser, and cleaning of industrial effluents. Unlike alginate, carrageenan use is dominated by food applications, particularly in concentration with milk like products. Carrageenans are used in gelling and thickening toothpaste, microencapsulation and immobilization. Carrageenan is used as a grafted copolymer in food packaging and coating applications [213].