Fatty acid profile of Cystoseira C. Agardh (Phaeophyceae, Fucales) species from the Tunisian coast: Taxonomic and nutritional assessments

Abstract

A screening of the total lipids and fatty acids (FAs) of 11 brown algae species of the genus Cystoseira (Phaeophyceae, Fucales) from the Tunisian coast is presented and discussed. Cystoseira species showed low total lipid content, ranging from 19.8 to 68.2 mg•g-1 dry weight. Fourteen major FAs were detected in the lipid extract of Cystoseira. The FA profile of lipid extracts was characterized by high amounts of saturated FAs (SFAs) ranging from 40.51% to 57.91% of total FAs, with predominance of the lipid fraction of palmitic acid (>30% of total FAs). The arachidonic acid (C20:4n-6) levels were found to be significantly high, ranging from 8% to 16% of total FAs. Multivariate analyses of FA composition showed low geographic differentiation, providing further evidence of intraspecific diversity. Cystoseira crinita, Cystoseira schiffneri, Cystoseira amentacea var. stricta, and Cystoseira sedoides stood out for their low polyunsaturated fatty acid (PUFA)/SFA ratios, low n-6/n-3 PUFA ratios, high unsaturation, and low atherogenicity and thrombogenicity indices, suggesting high nutritional value.

Biochemical Composition and Toxicity Assessment of Seaweeds from the Algerian Coast: Implications for Human Consumption and Marine Pollution

“…The dominant unsaturated and saturated fatty acids in the three algae are respectively oleic and palmitic acids. These findings align with those of Bouafif et al (2018) for C. amentacea, C. sedoides, and other species of the genus Cystosiera from Tunisia, as well as with the results of Caf et al (2019) for Cystoseira barbata, Sargassum vulgare, and Cystoseira elongata collected in Turkey. These results are also supported by data from the study conducted on S. vulgare harvested in Brazil during the dry period (Santos et al, 2019), and in S. vulgare from Island (Kumar et al, 2018).…”

“…Furthermore, temperature appears to be the primary factor influencing the proportions of saturated fatty acids (SFA) and polyunsaturated fatty acids (PUFA), although other environmental factors could also affect the fatty acid profiles in algae (Bouafif et al, 2018). The level of linoleic acid in C. sedoides in our study corresponds to that reported by Bouafif et al (2018) for the same species. However, the result we obtained for C. amentacea is higher than that found by the same author for the same species.…”

“…The variation in fatty acid contents observed may be attributed to factors such as location, seasonality, environmental conditions, and genetic factors (Caf et al, 2019). Furthermore, temperature appears to be the primary factor influencing the proportions of saturated fatty acids (SFA) and polyunsaturated fatty acids (PUFA), although other environmental factors could also affect the fatty acid profiles in algae (Bouafif et al, 2018). The level of linoleic acid in C. sedoides in our study corresponds to that reported by Bouafif et al (2018) for the same species.…”

Variations in the Composition, Antioxidant and Antimicrobial Activities of Cystoseira compressa during Seasonal Growth

“…In all cases, the score remained higher than 90% and the error lower than 5 ppm. All the compounds we tentatively identified according to Bouafif et al [35] who previously found most of them in Cystoseira and PubChem database. Furthermore, the amount of each compound is expressed as a percentage calculated based in the areas for each extract.…”

Bioprospecting of Less-Polar Fractions of Ericaria crinita and Ericaria amentacea: Developmental Toxicity and Antioxidant Activity

“…The different efficacy of the two extracts in the various antioxidant and anti-inflammatory tests may be attributable to the quantitative, and not qualitative, difference of the present natural organic compounds. The FAs profile of E. amentacea lipid extract was characterized by high amounts of saturated FAs (SFAs), around 40.51% of the total FAs, and palmitic acid was the predominant one [22].…”