Seaweeds

Seaweeds

Seaweeds are sea plants, plants that grown in the sea. The nutrients / vitamins / trace elements are more readily available in seaweeds / sea plants than they are in land plants.

Eedible-seaweedSeaweeds / Algae are identified by their colors and comprise of three divisions:

  • Brown Algae / Seaweed – Phaeophyta
  • Red Algae / Seaweed – Rhodophyta
  • Green Algae / Seaweed – Chlorophyta

Algae Industry:

  • Of the global seaweed harvest 85% – 95% goes to the food industry and is worth approx €4.1 billion p. a.
  • The most valuable crop produced by seaweed aquaculture is Nori – Porphyra – a red seaweed / alga. The value of this crop is around US$ 2 billion p.a. (approx 130 t dry weight)
  • The seaweed that produces the largest amount by aquaculture is Laminaria japonica – similar to the Irish Seaweed Laminaria digitata.
  • China produces around 3.8 million tones p.a. of Laminaria japonica
  • The majority of the seaweed industry is by aquaculture in Japan, China and North & South Korea.

Use of algae:

  1. Food and food supplements – edible seaweeds / algae that are sold as sea vegetables (sea veg, sea veggies) (image: sea weed and sea weed salad)
  2. Fertilizers, liquid seaweed extracts and soil conditioners
  3. Raw material for seaweed polymers such as the alginate industry
  4. Cosmetics,bodycare,thalassotherapy and medicinal preparations.

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