Abstract：
:Fourteen species of the genus Echium (Fam. Boraginaceae) collected in the Macaronesia were surveyed in a search for high levels of gamma-linolenic acid (GLA, 18:3omega6) in the seed oil. High amounts of this fatty acid were found in all of them, ranging from 18.85% (E. pitardii var. pitardii) to 27.42% (E. gentianoides) on total seed fatty acids. The GLA content related to total seed weight was also significant, ranging from 1.26% (E. handiense) to 8.22% (E. gentianoides). In addition, considerable amounts of stearidonic acid (SA, 18:4omega3) were detected, ranging from 3.78% (E. bonnetii var. bonnetii) to 8.81% (E. pininana) on total fatty acids. Besides all the perennial species, the four herbaceous Echium taxa endemic to the Macaronesia also showed high GLA percentages. This is in contrast to the low GLA level found in continental Echium species, all of them bearing an herbaceous habit. These results are in good agreement with the available genetic data and show the ability of GLA to discriminate between Macaronesian and continental Echium species. The analysis of five other Macaronesian species belonging to plant families rich in GLA are also reported.
journal_name
Phytochemistryjournal_title
Phytochemistryauthors
Guil-Guerrero JL,Gómez-Mercado F,Rodríguez-García I,Campra-Madrid P,García-Maroto Fdoi
10.1016/s0031-9422(01)00184-4subject
Has Abstractpub_date
2001-09-01 00:00:00pages
117-20issue
1eissn
0031-9422issn
1873-3700pii
S0031-9422(01)00184-4journal_volume
58pub_type
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