Nature of carotenoid pigments in yellow fat of sheep

Abstract
The chief carotenoids in the yellow fat of some sheep in New Zealand were identified, by absorption spectra behaviour on thin layer c:hromatography and colour reactions with Hel, as lutein and flavoxanthin. A third xanthophyll was probably auroxanthin. Small amounts of β-carotene and flavochrome were present. The 5:6 epoxides of carotene and lutein were not detected.

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