The conventional process for emulsification based on rotor–stator system, high pressure homogenizer and ultrasonic waves use droplet break-up as dispersing mechanism and usually couple with considerably input and high shear stress. In order to solve the limitation of conventional production of emulsion, a new method called membrane emulsification has been developed. This new method has been proven as a superior technique for producing emulsion. A new development of membrane emulsification that is called rotating membrane reactor (RMR) is introduced. The membrane has been modified to rotate or through the use of spinning membrane tube. It is expected that the membrane rotation can increase the productivity of membrane emulsification and well suited to the production of solids and capsules.