Muniyappa (1995)suggested the utilization of a higher shear mixing device for making esters from animal fat, but no data were given. Glycerolysis was investigated using a high shearing mixing device. The separated glycerol reacted with triglycerides to produce mono- and diglycerides, which are valuable chemical intermediates for detergents and emulsifiers. The author thought this process could lower the production cost of biodiesel fuel.