title: Skin surface lipids of the guinea pig.
abstract: Skin surface lipids of the guinea pig were found to contain sterol esters (33%), wax diesters (diacyl alkanediols) (24%), glycerol ether diesters (28%), free fatty alcohols (6%) and free sterols (9%). The sterol esters and diacyl alkanediols contained saturated fatty acids (40 and 67%, respectively) having straight and singly-branched chains and mono-unsaturated acids (60 and 33%,respectively) derived predominantly by delta 9-desaturation of C15 and C16 straight-chain saturated fatty-acid precursors. The 1-O-alkylglycerols and fatty acids from the glycerol ether diesters were both entirely saturated series containing straight, branched and multi-branched chains. Both the free and the esterified sterols consisted principally of cholesterol with a small proportion of lathosterol.
mesh_terms: D000818:Animals; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D005227:Fatty Acids / Q000032:analysis; D005231:Fatty Acids, Unsaturated / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D005989:Glycerides / Q000032:analysis; D006168:Guinea Pigs; D008055:Lipids / Q000032:analysis*; D012867:Skin / Q000032:analysis*; D013261:Sterols / Q000032:analysis
chemical_list: D005227:Fatty Acids; D005231:Fatty Acids, Unsaturated; D005989:Glycerides; D008055:Lipids; D013261:Sterols