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http://dx.doi.org/10.5657/kfas.2009.42.6.721

Composition in Carotenoids of Rainbow Trout Fed with CLA and Ascidian Tunic Extracts  

Kang, Seok-Joong (Dept. of Life Science, Gyeongsang National University)
Choi, Byeong-Dae (Dept. of Seafood Science and Technology/Institute of Marine Industry, Gyeongsang National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.42, no.6, 2009 , pp. 721-724 More about this Journal
Abstract
Astaxanthin is a valuable pigment source for many aquacultured species, including salmonoids, shrimp, sea bream, and ornamental species. Conjugated linoleic acid (CLA) and ascidian tunic extracts were mixed with the basal diet of rainbow trout to investigate their pigmentation effects. Synthetic Carophyll Pink and natural carotenoids that came from the tunic extracts were incorporated into muscle and skin tissues. The main carotenoids found in muscle after 8 weeks were canthaxanthin in CP12 (13.4%), and CP52 (17.2%), and astaxanthin in CP12 (58.5%), and CP52 (59.2%) in the Carophyll Pink group, while those in skin were canthaxanthin in CP14 (34.5%), and CP54 (29.2%), and astaxanthin in CP14 (32.0%), and CP54 (36.5%) in the ascidian tunic extract group. The total carotenoid content in skin (53.0-69.3 mg/kg) was greater than that in muscle (9.5-13.8 mg/kg).
Keywords
Rainbow trout; Astaxanthin; Canthaxanthin; Muscle color; Skin color;
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Times Cited By KSCI : 1  (Citation Analysis)
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