What does emulsifier do in shortenings?

What does emulsifier do in shortenings?
Emulsifiers including monoglycerides and diglycerides are commonly used in the production of shortenings. When the shortening is used in batter-based products, emulsifiers will help with the dispersion of the shortening throughout the batter. In the formulation of all soft wheat products, shortening is added primarily to provide a soft, tender bite,which, emulsifiers are playing important role in these parts, like incorporating air when the dough is beaten, and confering a good structure to the final products.