Polyglycerol esters of fatty acids is is dispersible in water and soluble in oil.
Polyglycerol esters of fatty acids is called polyglyceryl ester, an Emulsifier in which fatty acid is bound by esterification with polyglycerine, and generally it is dispersible in water and soluble in oil.
Its hydrophilicity and lipophilicity greatly change with the degree of its polymerization and the kind of fatty acid. Its HLB ranges from 3 to 13.
It has a variety of functions depending on these conditions, and is usable for various purposes. It is used in many types of food as an O/W and W/O emulsifier for Milk products containing acid and salt and a modifier to control the crystallization of fats.