Carotenoid content in Lota lota (L.) individuals in various biological activity periods
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The authors investigated the carotenoid content in the particular parts of Lota lota in summer, autumn, and winter, i.e. when burbots exhibit the lowest and highest activity. By means of columnar and thin-layer chromatography, the following carotenoids were found to be presenct: a-carotene, b-carotene, e-carotene, b-cryptoxanthin, neothxanthin, lutein, 3?-epi- lutein, zeaxanthin, tunaxanthin, antheraxanthin, lutein epoxide, echinenone, 3?-hydroxy- echinenone, idoxanthin, canthaxanthin, a-doradexanthin, b-doradexanthin, astaxanthin, diatoxanthin, parasiloxanthin, monadoxanthin, 7,8-dihydroparasiloxanthin, mutatoxanthin and rhodoxanthin. In the Lota lota individuals examined, the content of carotenoids was found to differ in winter and summer. The total carotenoid content ranged from 0.067 (gonads of males) of to 6.095 ?g g-1 wet weight (fins of males from December).
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B. Czeczuga, Department of General Biology, Medical University, Kilinskiego 1, 15-230 Bialystok 8, Poland