Fatty acids composition of macroalgae from Bulgarian Black Sea coast

Abstract

Lipids and fatty acids (FA) composition of three Black Sea macroalgae Cladophora vagabunda,Ceramium rubrum and Cystoseira barbata were studied. Fatty acids composition was analyzed by GC/MS. Total lipids content varied widely among the species and ranged between 0.66 and 0.98 g per 100 g fresh weight. Generally, saturated fatty acids were major components (62-71%), with 16:0 as the most abundant saturate (41- 57%). Total polyunsaturated FAs and monounsaturated FAs ranged from 28% to 38%. The green alga Cladophora vagabunda showed higher C18 PUFAs contents than did C20 PUFAs while for red alga Ceramiumrubrum the trend was opposite. Cystoseira barbata belonging to the group of brown algae showed similar amounts of C18 and C20 PUFAs contents. Cladophora vagabunda was rich in linoleic acid and Ceramiumrubrum in arachidonic acid (AA) while Cystoseira barbata was rich in both linoleic acid and eicosopentaenoic acid. All of the studied species had a nutritionally beneficial n6/n3 ratio (1.24-2.84:1).

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

“…Palmitic acid (C16:0) was the main FA of the Cystoseira lipids, followed by oleic acid. These results confirm data previously reported in the literature for the profile commonly seen in brown algae, especially in Cystoseira species (Khotimchenko et al 2002;Ivanova et al 2012Ivanova et al , 2013Kumari et al 2013;Ragonese et al 2014;Vizetto-Duarte et al 2015). For a given taxon, the differences between the FA profile observed in Tunisia and C. crinita [Ivanova et al 2013]), y estas diferencias se deben a las condiciones ambientales.…”

“…The species investigated here are poorly studied in the world as regards their total lipid content. This study shows that Tunisian C. barbata (4.11 g•100 g -1 FW) and C. crinita (8.8 g•100 g -1 FW) are richer in total lipids than species from the Black Sea harvested during the same season (0.84 g•100 g -1 FW for C. barbata [Ivanova et al 2012] and 0.72 g•100 g -1 FW for C. crinita [Ivanova et al 2013]), and these differences are related to environmental conditions. In fact, it is proven that in algae, total lipid content depends on temperature, light, and salinity (Kim et al 1996), factors that are very different between Tunisian and Black Sea waters.…”

“…En el mundo, hay pocos estudios de los lípidos totales de las especies aquí estudiadas. Este estudio demuestra que C. barbata (4.11 g•100 g -1 PF) y C. crinita (8.8 g•100 g -1 PF) de Túnez son más ricas en lípidos totales que las especies del mar Negro que se recolectaron durante la misma estación (0.84 g•100 g -1 PF para C. barbata [Ivanova et al 2012] y 0.72 g•100 g -1 PF para the same species in almost the same environmental conditions (2.51%, Gulf of Gabès, Tunisian southern coast).…”

“…El ácido palmítico (C16:0) fue el AG mayoritario de los lípidos de Cystoseira, seguido por el ácido oleico. Estos resultados confirman los datos reportados previamente en la literatura para los perfiles observados comúnmente en las algas pardas, especialmente en las especies de Cystoseira (Khotimchenko et al 2002;Ivanova et al 2012Ivanova et al , 2013Kumari et al 2013;Ragonese et al 2014;Vizetto-Duarte et al 2015). Para un taxón dado, las diferencias entre los perfiles de AG observados en Túnez y los reportados en la literatura para otras regiones podrían relacionarse a las diferentes estaciones en las que se recolectaron las muestras estudiadas y, por lo tanto, a los diferentes estados fisiológicos de las especies en cuestión y/o a las diferentes condiciones ambientales de los hábitats en las diferentes regiones.…”

Alpha-tocopherol and ergocalciferol contents of some macroalgae from Bulgarian Black Sea coast

“…Alpha-tocopherol content in this alga is approximately ten times higher than Ulva rigida and almost two times higher than Cystoseira crinita, which belongs to the same genus. The high content of α-tocopherol in Cystoseira barbata may be associated with the higher amount of n-3 fatty acids, published in a previous study [11]. In brown algae the principal tocopherol is α-tocopherol.…”