Autor(es): Santos, Sonia A. O. ; Vilela, Carla ; Freire, Carmen S. R. ; Abreu, Maria H. ; Rocha, Silvia M. ; Silvestre, Armando J. D.
Data: 2015
Identificador Persistente: http://hdl.handle.net/10773/20057
Origem: RIA - Repositório Institucional da Universidade de Aveiro
Assunto(s): FATTY-ACID; NATURAL-PRODUCTS; FUNCTIONAL FOOD; ULVA-LACTUCA; VITAMIN-E; SEAWEEDS; PHYTOSTEROLS; TOCOPHEROL; PROFILES; EXTRACTS
A detailed study of the lipophilic composition of Codium tomentosum, Ulva lactuca, Gracilaria vermiculophylla and Chondrus crispus macroalgae cultivated in the Portuguese coast was carried out by gas chromatography-mass spectrometry before and after alkaline hydrolysis. Their long-chain aliphatic alcohols and monoglycerides compositions are reported for the first time. Additionally, other new compounds were also identified: phytol and neophytadiene in C. tomentosum, U. lactuca and G. vermiculophylla and stigmasterol, alpha-tocopherol and 24-methylenecholesterol in C tomentosum. The lipophilic fraction of the studied macroalgae are mainly constituted by fatty acids (110.1-1030.5 mg kg(-1) of dry material) and sterols (14.8-1309.1 mg kg(-1) of dry material). C. tomentosum showed to be a valuable source of stigmasterol (1229.0 mg kg(-1) of dry material) and alpha-tocopherol (21.8 mg kg(-1) of dry material). These results are a relevant contribution for the valorisation of these macroalgae species as sources of valuable phytochemicals. (C) 2015 Elsevier Ltd. All rights reserved.
