Abstract
Seeds from 16 species of the genus Cistus were extracted for seed lipids which accounted for an average of 10.5% of the dry weight. The lipid mixtures obtained from the various species were very similar regarding qualitative and quantitative composition. The contained triacylglycerols (75%), phospholipids (5%), free sterols, steryl esters, steryl glycosides and acyl steryl glycosides (together 18%). Phospholipids were composed of phosphatidylcholine and phosphatidylethanolamine with minor proportions of phosphatidylinositol and phosphatidylglycerol. All sterol-containing fractions were dominated by β-sitosterol (94%). In triacylglycerols, steryl esters and phospholipids similar fatty acid mixtures were found, chain lengths ranging from C14 to C22. The main component was linoleic acid (about 50%), followed by palmitic acid, linolenic acid and oleic acid. Quantitative variations were observed in the fatty acid mixtures of the individual phospholipids. Detailed data are presented only for C. ladanifer which is representative for the whole genus Cistus L.
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