CAR′RAGEEN

Syn. I′′rish mo ; Chondrus , L. The Chondrus crisp us of botanists, a well-known alga or seaweed. It contains a large proportion of a peculiar jelly, called carrageen′in or pect′in. This may be purified by agitation with dilute alcohol and filtration. The jelly forms an agreeable article of diet. It is used to a limited extent for thickening colours in calico printing. In medicine , carrageen is used in the form of a jelly and decoction as a demulcent, and is often prescribed in pulmonary complaints. See Fixature , Algæ , Paste , Syrup .