The composition of neutral lipids of New Zealand propolis wax was determined with the use of Thin Layer Chromatography, Solid Phase Extraction, Gas Chromatography, and Gas Chromatography-Mass Spectrometry. Neutral lipids in the sample were represented mostly by wax esters, long-chain hydrocarbons, and free fatty acids. Low levels of free fatty alcohols were also observed, accompanied by even lower levels of 1-O-alkylglycerols. Wax esters consisted mostly of saturated non-hydroxylated and mono-hydroxylated fatty acids and alcohols, with some monounsaturated non-hydroxylated esters also present. Non-hydroxylated fatty acids contained from 16 to 36 carbon atoms, whilst hydroxylated acids contained from 14 to 26 carbon atoms. While almost 11% of non-hydroxylated fatty acids were monounsaturated, only trace levels of monounsaturated hydroxylated fatty acids were observed. Fatty alcohol moieties of wax esters were predominantly saturated and contained mostly from 24 to 34 carbon atoms per molecule. No polyhydroxylated fatty components were detected in the sample. Overall, the composition of the sample resembled that of beeswax.
“Simple lipids and hydrocarbons of New Zealand propolis wax” : http://www.tandfonline.com
|Author:||Mikhail Vyssotski , Kirill Lagutin & Owen Catchpole|