Effects of Fucoidan on Lipidomics Profiling of Juvenile Yellow Catfish (Pelteobagrus fulvidraco) during Feeding Time / 分析化学

ABSTRACT

The effects of fucoidan on the lipidomics profiling of juvenile yellow catfish (pelteobagrus fulvidraco) during different feeding time (week 1, week 2, week 3 and week 8) were investigated by ultra-performance liquid chromatography-quadrupole-time-of-flight-mass spectrometry (UPLC-Q-TOF-MS) combined with multivariate data analysis, e.g.principal component analysis (PCA) and partial least squares-discriminate analysis (PLS-DA).Based on VIP and p values, 11 lipid biomarkers were screened including lysophosphatidylcholine (Lyso-PC) 16∶0, phosphatidylcholine (PC) 22∶6/16∶0, phosphatidylethanolamine (PE) 22∶6/16∶0, phosphatidylinositol (PI) 18∶0/22∶6, diacylglycerol (DAG) 16∶0/16∶0,DAG 16∶0/18∶1, DAG 18∶1/18∶1, triglycerides (TAG) 20∶5/16∶0/18∶3, TAG 20∶4/16∶1/18∶2, TAG 16∶0/18∶2/20∶5 and TAG 18∶2/14∶0/18∶1.It was found that Lyso-PC, PC, PE and PI had the largest levels at the eighth week;the levels of DAG were decreased at the second and fourth weeks, and increased at the eighth week.While TAG was different the content of TAG 18∶2/14∶0/18∶1, TAG 20∶5/16∶0/18∶3 and TAG 20∶4/16∶1/18∶2 increased in response to fucoidan, but TAG 16∶0/18∶2/20∶5 decreased little.Therefore, for juvenile yellow catfish, fucoidan can affect its lipid metabolism, which provides a theoretical basis for investigation of the influence of fucoidan on the response mechanism of lipid metabolism of juvenile yellow catfish.