![]() ![]() ![]() Stanford (1862) coined the name "carrageenin" for the gelatinous material extracted by water from Chondrus crispus. Irish moss has also been known as carrageen from the Irish word, carraigeen, meaning "rock moss." "Moss" here refers to Irish moss, a common name for Chondrus crispus. "Soak half a cup of dry moss in cold water for five minutes, tie in a cheesecloth bag, place in a double boiler with a quart of milk and cook for half an hour add half a teaspoonful of salt or less, according to taste, strain, flavor with a teaspoonful of lemon or vanilla extract as desired, and pour into a mold or small cups, which have been wet with cold water after hardening, eat with sugar and cream." An old recipe for blanc mange (Smith, 1905) is as follows: In the West the algae Chondrus crispus and Gigartina stellata, as the sun-bleached whole plants, have been used for centuries for making jellies and milk puddings (blanc mange). In this respect alginates are more akin to pectins, found in land plants, than to the other seaweed hydrocolloids.Īpplications of carrageenans make use of both their hydrophilic and anionic properties, the latter influencing the former. Alginates, though anionic, are polymers of mannuronic and guluronic acids and as such owe their ionic character to carboxyl rather than sulfate groups. Agars, though also galactans, have little half-ester sulfate and may be considered to be nonionic for most practical purposes. In this respect they differ from agars and alginates, the other two classes of commercially exploited seaweed hydrocolloids. Due to their half-ester sulfate moieties they are strongly anionic polymers. Chemically they are highly sulfated galactans. CHAPTER 3 - PRODUCTION, PROPERTIES AND USES OF CARRAGEENANįMC Corporation, Marine Colloids DivisionĬarrageenans are commercially important hydrophilic colloids (water-soluble gums) which occur as matrix material in numerous species of red seaweeds (Rhodophyta) wherein they serve a structural function analogous to that of cellulose in land plants. ![]()
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