title: Fatty acid composition of selected macrophytes.
abstract: The content of total lipids and the fatty acid (FA) profile were determined for eight macroalgae (Cystoseira abies-marina, Fucus spiralis, Chaetomorpha pachynema, Codium elisabethae, Porphyra sp., Osmundea pinnatifida, Pterocladiella capillacea and Sphaeroccoccus coronopifolius). Total lipids were extracted using a solvent mixture of methanol/chloroform (2/1, v/v) and further derivatised to FA methyl esters (FAME). The analyses of FAME samples were performed by gas chromatography coupled to a flame ionisation detector. The total lipid content ranged from 0.06 to 3.54 g (per 100 g). The most abundant saturated FA were palmitic (C16:0) and myristic (C14:0), while oleic (C18:1 n-9) was the dominant monounsaturated acid. All seaweeds contained linoleic FA (C18:2 n-6). The α-linolenic (C18:3 n-3) and eicosapentaenoic (20:5 n-3) acids were present only in Porphyra sp. (3.34% ± 0.13) and C. pachynema (0.47% ± 0.12), respectively. The n-6/n-3 and h/H ratios were low, suggesting a high nutritional value of the algae studied.
authors.affiliation: Departamento Biologia, Universidade dos Açores, Ponta Delgada, Portugal. rpatarra@uac.pt
authors.forename: R F
authors.initials: RF
authors.lastname: Patarra
authors.forename: J
authors.initials: J
authors.lastname: Leite
authors.forename: R
authors.initials: R
authors.lastname: Pereira
authors.forename: J
authors.initials: J
authors.lastname: Baptista
authors.forename: A I
authors.initials: AI
authors.lastname: Neto
mesh_terms: D002849:Chromatography, Gas; D015118:Eicosapentaenoic Acid / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis*; D019787:Linoleic Acid / Q000032:analysis; D012624:Seaweed / Q000737:chemistry*; D017962:alpha-Linolenic Acid / Q000032:analysis
chemical_list: D005227:Fatty Acids; D017962:alpha-Linolenic Acid; D019787:Linoleic Acid; D015118:Eicosapentaenoic Acid