Research progress in emulsification of polyglycerol fatty acid esters
Polyglycerol fatty acid ester,referred to as polyglycerol ester,is a kind of non-ionic surfactant with excellent emulsifying property,which has been widely used in food,cosmetics and other fields.As a new type of emulsifier,polyglycerol fatty acid ester can be used as both water in oil emulsifier and oil in water emulsifier,and can also form heavy emulsion,which is suitable for various special uses and meets the market demand.Through sorting out more than 70 literatures related to polyglycerol fatty acids reported at home and abroad,this review focuses on the analysis and discussion of the emulsifying mechanism,determination methods,influencing factors,types of lotion and application fields of polyglycerol fatty acids.The emulsifying property of polyglycerol fatty acid ester is related to its hydrophilic lipophilic equilibrium value.By changing the polymerization degree of polyglycerol,the carbon chain length of fatty acid and the degree of esterification,polyglycerol fatty acid ester emulsifiers with different properties can be obtained to meet various application requirements.In this paper,the in-depth study on the emulsifying properties of polyglycerol fatty acid esters will provide a more perfect theoretical basis and practical application value for the further development of the emulsifying properties of polyglycerol fatty acid esters.
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