Table 1 Important nutritional elements in seaweeds^a

Proteins, essential amino acids

7% to 35%

Dietary fibres (soluble, insoluble)

45% to 75%

Vitamins

A, B (B₁, B₂, B₃, B₆ and B₁₂ of folate), C, E

Iodine

Variable large amounts in some brown species

More K⁺ salts than Na⁺ salts

   Minerals

Fe, Ca, P, Mg, Cl

   Trace compounds

Zn, Cu, Mn, Se, Mb, Cr

   Essential fatty acids

(2% to 5%), ω-3 (EPA, no DHA), ω-6 (AA)