Abstract
Neutral lipids and phospholipids were extracted from enamel and dentine of rat incisor and molar teeth, hydrolysed and the fatty acid composition of cholesterol esters, triglycerides, free fatty acids plus mono- and di-glycerides and total neutral lipids were determined. Lecithin, sphingomyelin plus phosphatidyl serine and phosphatidyl inositol, phosphatidyl ethanolamine, phosphatidic acid plus cardiolipin and total phospholipid fatty acids were also analysed. The major fatty acids present were palmitic, stearic and oleic, palmitoleic and linoleic acids being major components in some phospholipids. The relative proportions of the fatty acids from both neutral and phospholipids were similar in dentine and enamel and incisors and molars.
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