Benthic marine and blue–green algal species as a source of choline

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Abstract
Species of red, brown and green seaweeds and blue‐green algae were evaluated as sources of choline. A third of the seaweeds and all the blue‐green algae gave very low values. Of the remainder, the brown seaweeds yielded contents between 0.1 to 6, the red 1 to 6 and the green 3 to 8 mg choline/g of dry alga. The seasonal variation was investigated in three brown algae. Commercial seaweed meals from Ascophyllum nodosum showed nearly constant levels of choline. The chromatographic behaviour of the choline‐reineckate complex was also studied.