期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 69, 期 12, 页码 3787-3796出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.0c07281
关键词
lipidomics; atlantic salmon; life stage; long-chain highly unsaturated fatty acids; vegetable oil
资金
- Research Council of Norway GenoSysFat project [244164, 248792]
The study showed that salmon living in seawater have a higher demand for DHA, with faster changes in lipid composition in the gut and higher absorption and transport rates.
Salmon is an important source of long-chain highly unsaturated fatty acids (LC-HUFAs) such as 22:6n-3 [docosahexaenoic acid (DHA)]. In the present study, we conducted two identical experiments on salmon in freshwater (FW) and seawater (SW) stages, with a diet switch from fish oil (high in LC-HUFA) to vegetable oil (low in LC-HUFA) and vice versa. Our aim was to investigate the diet and life stage-specific features of lipid uptake (gut), processing (liver), and deposition (muscle). The lipid composition changed much faster in the gut of SW fish relative to FAN fish, suggesting that the former had a higher rate of lipid absorption and transport. SW fish also had higher expression of phospholipid synthesis and lipoprotein formation genes in the gut, whereas FW fish had higher expression of lipid synthesis genes in the liver. All phospholipids except PC-44:12 and PE-44:12 were less abundant in SW, suggesting that SW fish have a higher requirement for DHA.
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