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Open AccessArticle

Assessment of Astaxanthin Accumulation in Hepatocytes of Atlantic Salmon Fed Different Diets Using NMR Spectroscopy

1
Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
2
NOFIMA, 6600 Sunndalsøra, Norway
*
Author to whom correspondence should be addressed.
Molecules 2020, 25(8), 1769; https://doi.org/10.3390/molecules25081769
Received: 19 March 2020 / Revised: 7 April 2020 / Accepted: 9 April 2020 / Published: 12 April 2020
This study aimed to assess the astaxanthin (Ax) accumulation in hepatocytes isolated from farmed Atlantic salmon fed different diets (rich marine, poor, poor with marine phospholipids (MPL) and poor with docosahexaenoic acid (DHA)). Nuclear magnetic resonance (NMR) spectroscopy was used for the Ax detection and quantification. The use of the 13C-enriched Ax allowed the assessment of short-time Ax metabolism. The substitution of fish oil and meal in fish feed on plant analogs and the addition of MPL caused further catabolism and decrease of Ax accumulation in hepatocytes from 17 to about 6 mg/kg or to almost zero in the case of DHA addition. Signals assignment of the native and 13C-enriched astaxanthin in acetone were performed using 1D and 2D NMR spectra. View Full-Text
Keywords: carotenoid; astaxanthin; Atlantic salmon; fish diet; fish feed; plant proteins; DHA; hepatocytes; NMR carotenoid; astaxanthin; Atlantic salmon; fish diet; fish feed; plant proteins; DHA; hepatocytes; NMR
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Shumilina, E.; Ciampa, A.; Ytrestøyl, T.; Dikiy, A. Assessment of Astaxanthin Accumulation in Hepatocytes of Atlantic Salmon Fed Different Diets Using NMR Spectroscopy. Molecules 2020, 25, 1769.

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