Abstract
Basics on emulsion technologies were reviewed from the following viewpoints.
(1) Definition of the types and states of emulsions, and the differences among emulsions, nano emulsions and micro emulsions.
(2) Classification of emulsion formation and the summary of conventional emulsification methods.
(3) Instability factors and the theories of emulsion stability.
(4) Phase diagram and emulsions : How to understand the states of emulsions and micro emulsions and effective emulsification and solubilization.
(5) Summary of recent emulsion technologies for preparation of fine emulsions.
