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Uses of Seaweed

  • Seaweed is used as fertilizers.
  • It is used as soil conditioners and as livestock feed. Maerl is commonly used as a soil conditioner.
  • Aquatic and microscopic species are cultured in clear tanks or ponds and are either harvested or used to treat effluents.
  • Alga culture on a large scale is an important type of aquaculture.
  • It is used as compost for landscaping, or a means of combating beach erosion through burial in beach dunes.
  • Seaweed is under consideration as a potential source of bioethanol.
  • Seaweeds are also harvested or cultivated for the extraction of alginate, agar and carrageenan, gelatinous substances collectively known as hydrocolloids or phycocolloids. Hydrocolloids have attained commercial significance as food additives.
  • The food industry exploits their gelling, water-retention, emulsifying and other physical properties.
  • Agar is used in foods such as confectionery, meat and poultry products, desserts and beverages and moulded foods.
  • Carrageenan is used in salad dressings and sauces, dietetic foods, and as a preservative in meat and fish products, dairy items and baked goods.
  • Seaweed extract is used in some diet pills.
  • Seaweed is a source of iodine, necessary for thyroid function and to prevent goiter.

Click here to Know more about Seaweeds

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Seaweed with Sea Urchin Soup made at Korea

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