Bioconversion pathway of astaxanthin into retinol2 in mature rainbow trout (Salmo Gairdneri Rich.)
1989; Elsevier BV; Volume: 94; Issue: 3 Linguagem: Inglês
10.1016/0305-0491(89)90185-5
ISSN0305-0491
AutoresA. Guillou, Georges Choubert, T. Storebakken, J. Nouet, Sadasivam Kaushik,
Tópico(s)Retinoids in leukemia and cellular processes
Resumo1. Carotenoid and retinoid forms were analysed by HPLC in various tissues of mature rainbow trout fed for 11 months (7–9°C) with astaxanthin (50 and 100 mg/kg diet) or canthaxanthin (100 mg/kg diet). 2. Decreasing concentrations of canthaxanthin, echinenone and β-carotene, but no retinol1, were found in the liver and skin of canthaxanthin-fed fish. 3. Higher retinol2 concentrations were found in ovaries and testes of astaxanthin-fed fish compared to canthaxanthin and control groups. 4. A new metabolic pathway for direct conversion of astaxanthin into retinol2 in gonads is proposed.
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