Abstract: Kiwi linolenic acid oil has been dispersed to form stable nano-scaled oil-in-water particulates with the independently-prepared compound emulsifier with definite pH through high speed shearing，emulsification and high pressure homogenizing technique.According to the nano granularity,the particulate diameter has been represented by Zeta.The results showed that with 4 g emulsifier,4 mL Kiwi linolenic acid oil,200 mL preparation solution,9 000 r/min shearing and emulsification for 20 min or two times of 150 MPa high pressure homogeneity circulation,the average minimum particulate diameter was (60±10)nm and the average maximum stable durations for shearing and emulsification and for high pressure homogeneity were 1.5 a and more than 2 a respectively. Such technological condition is the optimum and can satisfy pharmacy and health food industry.

Key words: nanoemulsion, kiwi, linolenic acid oil, oil-in-water, shearing and emulsification, high pressure homogenization