Identification of products from canthaxanthin oxidation

Raphael C. Mordi*, John Christopher Walton

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Canthaxanthin is a carotenoid that lacks pro-vitamin A activity but is known to have antioxidant activity. The products of its oxidation in oxygen were found to be mainly substituted apo-carotenals and apo-carotenones. The product profile resembles that obtained in the oxidation of β-carotene, except that with canthaxanthin these products are the 4-oxo-β-apo-carotenals and 4-oxo-β-apo-carotenones. Epoxides and diepoxides were clearly identified from β-carotene oxidation but in contrast, with canthaxanthin, apart from 5,6-epoxy-canthaxanthin, which was detected at the early stage of oxidation and minor quantities of 5,6-epoxy-β-ionone and 5,6-epoxy-4-oxo-β-apo-11-carotenal, no other epoxides were detected. The identities of these products lead us to suggest that the mechanism of canthaxanthin oxidation bears significant similarity to that of β-carotene.
Original languageEnglish
Pages (from-to)836-840
Number of pages5
JournalFood Chemistry
Issue numberPart A
Early online date12 Nov 2015
Publication statusPublished - 15 Apr 2016


  • Canthaxanthin
  • β-Carotene
  • Carotenoids
  • Oxidation
  • Antioxidant
  • Apo-Carotenoids


Dive into the research topics of 'Identification of products from canthaxanthin oxidation'. Together they form a unique fingerprint.

Cite this