Title: Metabolism of Carotenoids in Salmonids. Part 3. Metabolites of astaxanthin and canthaxanthin in the skin of atlantic salmon (<i>salmo salar</i>, L.)
Abstract:Abstract Diets supplemented with astaxanthin and canthaxanthin, respectively, and a control diet without carotenoid additions, were fed to 1½‐year‐old Atlantic salmon ( Salmo salar , L.) for one year....Abstract Diets supplemented with astaxanthin and canthaxanthin, respectively, and a control diet without carotenoid additions, were fed to 1½‐year‐old Atlantic salmon ( Salmo salar , L.) for one year. The integuments were investigated as to their quantitative and qualitative carotenoid composition. Astaxanthin and canthaxanthin deposited in the skin amounted to 20 and 14% of the total carotenoids only. Seventy % must be considered as metabolites of astaxanthin and canthaxanthin and 10% as basic xanthophylls also present in the control groups. Astaxanthin apparently underwent the following metabolic pathway: astaxanthin→idoxanthin→adonixanthin→zeaxanthin→zeaxanthin 5,6‐epoxides. Reduction of the 4′‐carbonyl group was stereospecific leading to the (4′ R )‐idoxanthin. Canthaxanthin was obviously converted to β,β‐carotene via 4′‐hydroxyechinenone, echinenone, and 4‐hydroxy‐β,β‐carotene.Read More
Publication Year: 1988
Publication Date: 1988-06-15
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 29
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