1,5-Dihydroxyiridanyl-lycopene in tomato puree

1,5-Dihydroxyiridanyl-lycopene was isolated from tomato puree. The oxidation of lycopene by hydrogen peroxide also afforded 1,5-dihydroxyiridanyl-lycopene, in addition to lycopene-1,2-epoxide and 1,5-epoxyiridanyl-lycopene. A reaction pathway for this dihydroxy compound is proposed.