It gives rise to the xanthophylls diatoxanthin and dinoxanthin.
2.
Major pigments of diatoms are chlorophylls a and c, beta-carotene, fucoxanthin, diatoxanthin and diadinoxanthin.
3.
Its carotenoid content has been investigated and the following substances have been found : ?-, ?, ?-carotene, zeaxanthin, diatoxanthin, mutatoxanthin and astaxanthin.
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