Science. 1963 Oct 4;142(3588):47-8.

Astaxanthin in the Cedar Waxwing.

Abstract

The pigment on the secondary feathers of the cedar waxwing (Bombycilla cedrorum) is deposited as an amorphous layer upon a supporting medullary structure. The pigment was extracted with alkali and analyzed by chromatographic and spectrophotometric methods. The results indicate that the pigment is astacene (3,3',4,4'-tetra-keto-beta-carotene), the oxidation product of astaxanthin.

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Astaxanthin in the Cedar Waxwing.

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