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Here, a lipid called DOPH which is composed of two unsaturated hydrocarbon chains and one phosphate group was used.
This can be regarded as a lipid whose parts corresponding to ammonium groups of lecithin as biolipid are removed.
Unsaturated hydrocarbon chain is a kind of hydrocarbon chain with unsaturated bond such as double bond.
※ The synthetic lipid called DOPH was proposed by Prof. Younosuke.Kobatake ( Hokkaido univ ) and Prof. Mizuko.Yoshida ( Tokyo Kougyo univ ) in 1970 .
DOPH has a character that its aggregative patterns are varied depending on ion-concentration such as sodium ion in touching solution.
This character itself is not rare so much.
Actually, palmitic acid sodium salt to produce soap also has a character to change its aggregative state according to ion-environment.
However, DOPHs are aggregated at random under low ion concentration, they turn to be oil-drops, so that they behave as insulators.
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