Journal
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
Volume 133, Issue 3, Pages 331-336Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S1096-4959(02)00159-8
Keywords
carotenoids; catfish; comparative biochemistry; new 7, 8-dihydrocarotenoids; 7 ', 8 '-dihydroparasiloxanthin; parasiloxanthin; siluridae; siluriformes
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The carotenoids of 12 species of Siluriformes fishes (eight families) were investigated from.a comparative biochemical point of view. The patterns of carotenoids in catfishes belonging to the family Siluridae were quite different from those of the other seven families of catfishes (Bagridae, Amblycipitidae, Clariidae, Plotosidae, Ictaluridae, Callichthyidae and Malapteruridae). 7, 8-Dihydro-beta-carotene; 7, 8, 7', 8'- and 7, 8, 9, 10-tetrahydro-beta-carotene; (3R)-7', 8'-dihydro-beta-cryptoxanthin; 7, 8-dihydrolutein A; 7, 8-dihydrolutein B; parasiloxanthin; 7', 8'-dihydroparasiloxanthin; and 4 or 4'-hydroxyparasiloxanthin were characteristic carotenoids found in only one family, Siluridae, and these carotenoids accounted for 24-60% of total carotenoids. In catfishes belonging to the other seven families except Siluridae, the carotenoid patterns were very similar and the most predominant carotenoid was zeaxanthins (23-56%). (C) 2002 Elsevier Science Inc. All rights reserved.
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