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Fatty acid profiling of tropical marine macroalgae: An analysis from chemotaxonomic and nutritional perspectives
Year:
2013
Source of publication :
Phytochemistry
Authors :
Kumari, Puja
;
.
Volume :
86
Co-Authors:
Kumari, P., Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt, Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
Bijo, A.J., Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt, Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
Mantri, V.A., Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt, Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
Reddy, C.R.K., Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt, Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
Jha, B., Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt, Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
Facilitators :
From page:
44
To page:
56
(
Total pages:
13
)
Abstract:
The lipid and fatty acid (FA) compositions for 100 marine macroalgae were determined and discussed from the context of chemotaxonomic and nutritional perspectives. In general, the lipid contents in macroalgae were low (2.3-20 mg/g fr. wt.) but with substantially high amounts of nutritionally important polyunsaturated fatty acids (PUFAs) such as LA, ALA, STA, AA, EPA and DHA, that ranged from 10% to 70% of TFAs. More than 90% of the species showed nutritionally beneficial n6/n3 ratio (0.1:1-3.6:1) (p ≤ 0.001). A closer look at the FA data revealed characteristic chemotaxonomic features with C18 PUFAs (LA, ALA and STA) being higher in Chlorophyta, C20 PUFAs (AA and EPA) in Rhodophyta while Phaeophyta depicted evenly distribution of C18 and C20 PUFAs. The ability of macroalgae to produce long-chain PUFAs could be attributed to the coupling of chloroplastic FA desaturase enzyme system from a photosynthetic endosymbiont to the FA desaturase/elongase enzyme system of a non-photosynthetic eukaryotic protist host. Further, the principal component analysis segregated the three macroalgal groups with a marked distinction of different genera, families and orders, Hierarchical cluster analyses substantiated the phylogenetic relationships of all orders investigated except for those red algal taxa belonging to Gigartinales, Ceramiales, Halymeniales and Rhodymeniales for which increased sampling effort is required to infer a conclusion. Also, the groups deduced from FA compositions were congruent with the clades inferred from nuclear and plastid genome sequences. This study further indicates that FA signatures could be employed as a valid chemotaxonomic tool to differentiate macroalgae at higher taxonomic levels such as family and orders. © 2012 Elsevier Ltd. All rights reserved.
Note:
Related Files :
algae
chemotaxonomy
endosymbiosis
fatty acids
Halymeniales
Lipids
metabolism
Review
Symbiosis
Show More
Related Content
More details
DOI :
10.1016/j.phytochem.2012.10.015
Article number:
Affiliations:
Database:
Scopus
Publication Type:
Review
;
.
Language:
English
Editors' remarks:
ID:
20051
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:33
Scientific Publication
Fatty acid profiling of tropical marine macroalgae: An analysis from chemotaxonomic and nutritional perspectives
86
Kumari, P., Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt, Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
Bijo, A.J., Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt, Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
Mantri, V.A., Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt, Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
Reddy, C.R.K., Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt, Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
Jha, B., Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt, Marine Chemicals Research Institute, Bhavnagar, Gujarat 364002, India
Fatty acid profiling of tropical marine macroalgae: An analysis from chemotaxonomic and nutritional perspectives
The lipid and fatty acid (FA) compositions for 100 marine macroalgae were determined and discussed from the context of chemotaxonomic and nutritional perspectives. In general, the lipid contents in macroalgae were low (2.3-20 mg/g fr. wt.) but with substantially high amounts of nutritionally important polyunsaturated fatty acids (PUFAs) such as LA, ALA, STA, AA, EPA and DHA, that ranged from 10% to 70% of TFAs. More than 90% of the species showed nutritionally beneficial n6/n3 ratio (0.1:1-3.6:1) (p ≤ 0.001). A closer look at the FA data revealed characteristic chemotaxonomic features with C18 PUFAs (LA, ALA and STA) being higher in Chlorophyta, C20 PUFAs (AA and EPA) in Rhodophyta while Phaeophyta depicted evenly distribution of C18 and C20 PUFAs. The ability of macroalgae to produce long-chain PUFAs could be attributed to the coupling of chloroplastic FA desaturase enzyme system from a photosynthetic endosymbiont to the FA desaturase/elongase enzyme system of a non-photosynthetic eukaryotic protist host. Further, the principal component analysis segregated the three macroalgal groups with a marked distinction of different genera, families and orders, Hierarchical cluster analyses substantiated the phylogenetic relationships of all orders investigated except for those red algal taxa belonging to Gigartinales, Ceramiales, Halymeniales and Rhodymeniales for which increased sampling effort is required to infer a conclusion. Also, the groups deduced from FA compositions were congruent with the clades inferred from nuclear and plastid genome sequences. This study further indicates that FA signatures could be employed as a valid chemotaxonomic tool to differentiate macroalgae at higher taxonomic levels such as family and orders. © 2012 Elsevier Ltd. All rights reserved.
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