How to determine which lipid has more polarity than the other? Please explain in detail.
A mixture containing the lipids listed below is separated using a silica gel column and washing with increasingly polar solvents. Rank the lipids in order of elution from the column. (1) is the first lipid to elute from the column,(4) is the last lipid to elute from the column. Each number should be used only once.
Cholesterylstearate
Sphingomyelin
Phosphatidylserine
Cholesterol.