Abstract: With cyclohexane as oil phase, amylose as aqueous phase, meanwhile Span60 and Tween60 as emulsifiers influence factors of conformation of starch emulsion were investigated by dissipative particle dynamics(DPD) simulation. It is shown from DPD simulations that  the system becomes equilibrated after 6000-step simulation, the size of micro particle decreases firstly and then increases  with the increase of the content of emulsifiers, but increases with the increase of starch content and the decrease of the content of cyclohexane. The parameters of forming the stable starch emulsion system are 7＜oil-water ratio≤20 and  9%＜content of emulsifier≤18%. The results show that the sizes of the microspheres decrease with the increase of  the content of emulsifier(from 11% to 15%), but increase when  content of emulsifier  higher than 15%. The experimental results are consistent with the simulation results.

Key words: Dissipative particle dynamics(DPD); , Molecular simulation; , Starch emulsion