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Ecological and simultaneous seed oil extraction/saponification/γ‐linolenic acid concentration
Author(s) -
LópezMartínez Juan Carlos,
CampraMadrid Pablo,
RincónCervera Miguel Ángel,
GuilGuerrero José Luis
Publication year - 2005
Publication title -
european journal of lipid science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.614
H-Index - 94
eISSN - 1438-9312
pISSN - 1438-7697
DOI - 10.1002/ejlt.200401099
Subject(s) - saponification , chemistry , extraction (chemistry) , saponification value , gamma linolenic acid , chromatography , fatty acid , linolenic acid , yield (engineering) , food science , polyunsaturated fatty acid , botany , organic chemistry , biology , linoleic acid , materials science , metallurgy
Abstract The essential fatty acid γ‐linolenic (GLA, C18:3 n‐ 6), which has several pharmaceutical properties, has been concentrated from the seed oil of three plant species, Borago officinalis , Anchusa azurea and Echium fastuosum . The process was effected through one single and ecological step: simultaneous seed oil extraction/saponification/GLA concentration. Finally, the mother liquor containing the GLA concentrate was stored at low temperature to crystallize saturated fatty acids and further increase GLA purity. Two variables affecting the process were found: water content in the saponification mixture and filtration temperature. Best results were obtained from B. officinalis (GLA purity 68%, GLA yield 64%), although closely followed by the concentrates from the other species.