ALGINATES and ALGINIC ACID
Alginate is the general name for gums extracted from brown algae seaweeds.
Alginates are extensively used in the processed food industry for their thickening, emulsifying and stablilizing properties, and are the most widely used gums.
The salt form of alginatic acid is sodium alginate and is used as an emulsifier in sauces.
Kelp was once a major source of potash and iodine, and today is used to obtain alginic acid. Alginic acid is used in tire manufacturing, in ice cream to prevent it from crystallizing, and in paints.