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Docosahexaenoic acid is naturally concentrated at the sn-2 position in triacylglycerols of the Australian Thraustochytrid Aurantiochytrium sp. Strain TC 20

Citation

Lee-Chang, KJ and Taylor, MC and Drummond, G and Mulder, RJ and Mansour, MP and Brock, M and Nichols, PD, Docosahexaenoic acid is naturally concentrated at the sn-2 position in triacylglycerols of the Australian Thraustochytrid Aurantiochytrium sp. Strain TC 20, Marine Drugs, 19, (7) pp. 1-11. ISSN 1660-3397 (2021) [Refereed Article]


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Copyright 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/4.0/)

DOI: doi:10.3390/md19070382

Abstract

The Labyrinthulomycetes or Labyrinthulea are a class of protists that produce a network of filaments that enable the cells to glide along and absorb nutrients. One of the main two Labyrinthulea groups is the thraustochytrids, which are becoming an increasingly recognised and commercially used alternate source of long-chain (LC, ≥C20) omega-3 containing oils. This study demonstrates, to our knowledge for the first time, the regiospecificity of the triacylglycerol (TAG) fraction derived from Australian thraustochytrid Aurantiochytrium sp. strain TC 20 obtained using 13C nuclear magnetic resonance spectroscopy (13C NMR) analysis. The DHA present in the TC 20 TAG fraction was determined to be concentrated in the sn-2 position, with TAG (16:0/22:6/16:0) identified as the main species present. The sn-2 preference is similar to that found in salmon and tuna oil, and differs to seal oil containing largely sn-1,3 LC-PUFA. A higher concentration of sn-2 DHA occurred in the thraustochytrid TC 20 oil compared to that of tuna oil.

Item Details

Item Type:Refereed Article
Keywords:thraustochytrids, regiospecificity, triacylglycerols, polyunsaturated fatty acids, fatty acids, lipoprotein, biodiesel, lipds, oli
Research Division:Biomedical and Clinical Sciences
Research Group:Pharmacology and pharmaceutical sciences
Research Field:Pharmaceutical delivery technologies
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Fisheries - aquaculture not elsewhere classified
UTAS Author:Nichols, PD (Dr Peter Nichols)
ID Code:152907
Year Published:2021
Web of Science® Times Cited:3
Deposited By:Medicine
Deposited On:2022-08-26
Last Modified:2022-09-05
Downloads:3 View Download Statistics

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