ISSN:
1573-5117
Keywords:
marine microalgae
;
total lipids
;
fatty acid composition
;
taxonomic index
;
marine aquaculture
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Total lipid and total fatty acid composition was studied in twelve marine microalgae species, belonging to the Eustigmatophyceae, Chlorophyceae, Haptophyceae and Prasinophyceae, cultured under comparable conditions. Species of the same class showed a particular fatty acid composition, indicating specific fatty acid bioconversion modes. The fatty acid composition of the different microalgae was compared to previously published data. Nannochloropsis species (Eustigmatophyceae) had the highest total lipid (10.3–16.1% of dry weight), 20:4n-6 (1.9–3.9% by weight of total fatty acids) and 20:5n-3 contents (12.1–17.8%, as weight percentage of total fatty acids). The abundance of highly unsaturated fatty acids (HUFA) is of interest to larval nutrition in marine aquaculture. All other species analyzed lacked or had low contents of long-chained HUFA, except for Isochrysis galbana (Haptophyceae), which was high in 22: 6n-3 (6.9%). Nannochloris and Chlorella species (Chlorophyceae) showed high proportions of short-chained polyunsaturated fatty acids, with 16:2n-6 (3.5–4.9%), 16:3n-3 (8.6–15.2%), 18:2n-6 (10.5–25.6%) and 18: 3n-3 (15.3–24.3%) as major fatty acids, but low levels of HUFA such as 20: 5n-3 or 22: 6n-3.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00005683
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