Oil Content, Fatty Acids And Unsaponifiable Lipids Of Lupin Seed

Summary

Mature seeds of four Lupinus species, L. albus, L. angustifolius, L. luteus and L. mutabilis, have been shown to be possible sources of edible oil. The mostpromising are L. mutabilis and L. albus, in which cultivars have been identified containing up to 21 percent and 13 percent respectively of oil in whole seed.Three of the species contain significant quantities of 11 component fatty acids,16:0, 16:1, 18:0, 18:1, 18:2, 18:3, 20:0, 20:1,22:0, 22:1 and 24:0, but 20 :1,22:1 and 24:0 are absent from L. mutabilis. From their component fatty acidprofiles it is possible to distinguish clearly between oils from the four species.Of the unsaponifiable components, the sterols comprise ,β-sitosterol,campesterol, stigmasterol and cholesterol. Though 4-methyl sterols cannot bedetected, triterpene alcohols are dominated by lupeol, ,β-amyrin being the onlyother significant component in this class. L. luteus seed oil contains primarilyγ- ,but also α- and δ- tocopherols