Astaxanthin from Xanthophyllomyces dendrorhous

Astaxanthin from Xanthophyllomyces dendrorhous Large-Scale... 

In nature, astaxanthin is usually found either conjugated to proteins (as in the flesh of salmon or in the lobster carapace) or esterified with fatty acids (as in Haematococcus pluvialis microalgae). In contrast, synthetic astaxanthin is produced in the free form. Synthetic, algae-based, and yeast-based (from Xanthophyllomyces dendrorhous) astaxanthins are distinct in their stereoisomeric compositions as well." Synthetic astaxanthin, as well as all three significant natural sources Haematococcus, Xanthophyllomyces, and extracted cmstacean shells), are used widely as feed additives." Human dietary astaxanthin supplements derived from these three natural sources have also been marketed in recent years. " ... 

Salmon farm Wild salmon contains predominantly the (3S,3 S)-enantiomer. In fanned salmon, fed with shrimp bran, which is mainly produced from northern prawn (Pandalus borealis) or with an extract from the green alga Haematococcus pluvialis, the (3S,3 S)-enantiomer is also the main enantiomer. However, if the astaxanthin comes from the basidiomycetous yeast Phaffia rhodozyma or its sexual form Xanthophyllomyces dendrorhous, or from the Antarctic krill (Euphausia superba), the (3R,3 R)-enantiomerprevails. [69]... 

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