Kelp

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Kelp

Kelp (/kɛlp/) is a type of large brown seaweed that grows in shallow, nutrient-rich saltwater, near coastal fronts around the world. It is different from many other seaweeds because it grows in organized "forests".

Etymology

The term "kelp" is derived from the Old Norse word "kǫlpr", meaning "tangle or twist". It was first used in English in the late 14th century.

Description

Kelp is known for its high growth rate — the genera Macrocystis and Nereocystis can grow as fast as half a meter a day, ultimately reaching 30 to 80 meters.

Uses

Kelp has been used for centuries as a rich source of iodine and other minerals. It is also used in food preparation, as a source of alginate, mannitol, and fucoidan, and in the production of potash.

Related Terms

  • Seaweed: A general term for a number of species of macroscopic, multicellular, marine algae.
  • Iodine: A chemical element with the symbol I and atomic number 53.
  • Alginate: A type of carbohydrate derived from seaweed, used in food preparation and various industrial uses.
  • Mannitol: A type of sugar alcohol used as a sweetener and medication.
  • Fucoidan: A type of complex carbohydrate found in various species of brown algae and brown seaweed.
  • Potash: A type of salt that contains potassium in water-soluble form.

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