Borage seed oil is the richest source of gamma -linolenic acid, an unusual
fatty acid of medicinal value. The total chemical composition of two lipoph
yllic extracts from Borrago officinalis seeds was determined by capillary g
as-chromatography/mass-spectrometry, revealing the presence of tocopherols
and sterols along with important quantities of fatty acids. The fatty acids
were characterised as methyl esthers after derivatization with sodium meth
oxide, a 14% content of GLA being found.