brownish, xanthin pigment of algae.

a carotenoid obtained from brown algae.

yellowish-brown pigment found in some members of the Chromista, including kelps and diatoms.

An accessory brown pigment found in brown algae and some protists.

A brown carotenoid pigment used in photosynthetis, found in the golden-brown and brown algae

foo-ko-ZAN-thin A pigment that gives golden-brown algae their distinctive color. 467

Brown accessory pigment found in and characteristic of the brown algae.

A brownish accessory pigment used in capturing energy.

Fucoxanthin is a carotenoid, with formula C40H60O6. It is found as an accessory pigment in the chloroplasts of brown algae and most other heterokonts, giving them a brown or olive-green color. Fucoxanthin absorbs light primarily in the blue-green to yellow-green part of the visible spectrum, peaking at around 510-525 nm by various estimates and absorbing significantly in the range of 450 to 540 nm.