Sardinian Boraginaceae are new potential sources of gamma-linolenic acid

卷:218

Luis Guil-Guerrero, Jose ; Gomez-Mercado, Francisco ; Pilar Ramos-Bueno, Rebeca ; Jose Gonzalez-Fernandez, Maria ; Urrestarazu, Miguel ; Angel Rincon-Cervera, Miguel

Univ Almeria

关键词: Borago morisiana;    Borago pygmaea;    gamma-Linolenic acid;    Stearidonic acid;    Sardinian Boraginaceae;    Endangered species;   

DOI  :  10.1016/j.foodchem.2016.09.111

学科分类：食品科学和技术

【 摘 要 】

The aim of this work was to establish the richness in gamma-linolenic acid (GLA, 18:3n6) and stearidonic acid (SDA, 18:4n3) of several Sardinian Boraginaceae species. To this end, seeds of selected species were collected from their natural habitats and analysed. The highest GLA contents were found in the seed oils of two endemic Borago taxa, i.e. B. morisiana (24.4 and 24.6% GLA of total fatty acids for samples from San Pietro Island and Sardinia Island, respectively), and 22.9% GLA for B. pygmaea. Both Borago species contained more GLA than B. officinalis collected in the same ecosystems. SDA was found in significant amounts in Echium plantagineum seed oil from the Lattias Mountains (15% SDA of total fatty acids). It is notable that both Borago GLA-rich species are under threat of extinction, thus revealing the importance of the preservation of the natural Sardinian ecosystems for endangered species and human health. (C) 2016 Elsevier Ltd. All rights reserved.