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Dietary Supplementation of Polyunsaturated Fatty Acids in Caenorhabditis elegans
Published on: November 29, 2013
Odd-chain polyunsaturated fatty acids in thraustochytrids.
Kim Jye Lee Chang1, Maged P Mansour, Graeme A Dunstan
1Energy Transformed National Research Flagship, CSIRO Marine and Atmospheric Research, GPO Box 1538, Hobart TAS 7001, Australia. kim.leechang@csiro.au
Phytochemistry
|May 7, 2011
Summary
Unusual odd-chain fatty acids (OC-FA) were found in Tasmanian thraustochytrids. These OC-FA, including novel polyunsaturated fatty acids (PUFA), may serve as valuable biomarkers in marine ecosystems.
Area of Science:
- Marine Biology
- Lipidomics
- Biochemistry
Background:
- Thraustochytrids are marine microorganisms known for producing polyunsaturated fatty acids (PUFA).
- Fatty acid (FA) profiles, especially odd-chain fatty acids (OC-FA), are crucial for understanding marine food webs and organismal health.
Purpose of the Study:
- To identify and characterize unusual odd-chain fatty acids (OC-FA) in thraustochytrid strains.
- To investigate the potential of these OC-FA as biomarkers in marine environments.
Main Methods:
- Fatty acid composition analysis using capillary gas chromatography (GC) and GC-mass spectrometry (GC-MS).
- Structural confirmation of polyunsaturated fatty acids (PUFA) via 4,4-dimethyloxazoline derivatives.
- Isolation of thraustochytrid strains (TC 01 and TC 04) from Tasmanian coastal waters.
Main Results:
- Detection of significant proportions of saturated OC-FA (15:0 and 17:0) and unsaturated OC-FA (17:1ω8).
- Identification of novel C₂₁ PUFA (21:5ω5 and 21:4ω7) in thraustochytrid strain TC 04.
- PUFA, including EPA, AA, and DHA, constituted 68-74% of total FA.
Conclusions:
- Thraustochytrids possess a unique capacity for synthesizing diverse OC-FA, including novel PUFA.
- These identified OC-PUFA could originate from dietary thraustochytrids and function as effective biomarkers in marine food web studies.
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