Determination of fat soluble vitamins from amazonian fresh-water fishes. I. HPLC analysis of tambaqui, pirarucu and cuiu-cuiu livers .

It was found that fish livers from the Amazon have considerable amounts of vitamins A, D and E compared with the values of the standartized cod-liver oil. Tambaqui liver oil has high concentration of vitamin A₁ (retinol) and vitamin A₂ (degidroretinol) whereas the liver oils of pirarucu and cuiu-cuiu have preferently the vitamin A₂. The contents of the vitamins D and E observed in the liver oils of tambaqui and cuiu-cuiu was extremely high.