Interannual and between species comparison of the lipids, fatty acids and sterols of Antarctic krill from the US AMLR Elephant Island survey area

Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
Charles F PhlegerPeter D Nichols

Abstract

Antarctic euphausiids, Euphausia superba, E. tricantha, E. frigida and Thysanoessa macrura were collected near Elephant/ Island / during 1997 and 1998. Total lipid was highest in E. superba small juveniles (16 mg g(-1) wet mass), ranging from 12 to 15 mg in other euphausiids. Polar lipid (56-81% of total lipid) and triacylglycerol (12-38%) were the major lipids with wax esters (6%) only present in E. tricantha. Cholesterol was the major sterol (80-100% of total sterols) with desmosterol second in abundance (1-18%). 1997 T. macrura and E. superba contained a more diverse sterol profile, including 24-nordehydrocholesterol (0.1-1.7%), trans-dehydrocholesterol (1.1-1.5%), brassicasterol (0.5-1.7%), 24-methylenecholesterol (0.1-0.4%) and two stanols (0.1-0.2%). Monounsaturated fatty acids included primarily 18:1(n-9)c (7-21%), 18:1(n-7)c (3-13%) and 16:1(n-7)c (2-7%). The main saturated fatty acids in krill were 16:0 (18-29%), 14:0 (2-15%) and 18:0 (1-13%). Highest eicosapentaenoic acid [EPA, 20:5(n-3)] and docosahexaenoic acid [DHA, 22:6(n-3)] occurred in E. superba (EPA, 15-21%; DHA, 9-14%), and were less abundant in other krill. E. superba is a good source of EPA and DHA for consideration of direct or indirect use as a food item ...Continue Reading

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Citations

May 17, 2005·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Charles F PhlegerPeter D Nichols
Oct 8, 2003·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Shinichi TakaichiSatoshi Hanada
Dec 18, 2008·Nutrition Research Reviews·Matthew R MillerChris G Carter
Oct 7, 2009·Proceedings of the National Academy of Sciences of the United States of America·Rosamond L NaylorPeter D Nichols
Dec 4, 2012·International Journal of Molecular Sciences·Lena BurriKjetil Berge
Jun 3, 2014·The Proceedings of the Nutrition Society·Jacques Delarue, Nathalie Guriec
May 12, 2015·Nutrients·Lena Burri, Line Johnsen
Feb 7, 2008·Chemistry and Physics of Lipids·Sofia Miniadis-MeimaroglouVassilia J Sinanoglou
Nov 15, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ronan LordanIoannis Zabetakis
Aug 23, 2006·Marine Biotechnology·A J PassmoreS Nicol
Feb 8, 2007·Current Opinion in Clinical Nutrition and Metabolic Care·Radjini A Racine, Richard J Deckelbaum
Jul 23, 2019·Veterinary World·Lena BurriAndreas Berg Storsve
Mar 9, 2019·Food Science & Nutrition·Weiwei SunXiaoming Jiang
Oct 22, 2020·Evidence-based Complementary and Alternative Medicine : ECAM·Chengfei WenShumei Liu
Dec 16, 2020·Marine Drugs·Vida ŠimatFatih Özogul

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