Abstract: Provided are a production method of liposome dispersion industrially useful and the production equipment. In a process for forming liposome dispersion by dispersing a membrane material in an aqueous medium, wherein a liquid that the membrane material is dissolved or dispersed is discharged from 161a, while discharging the aqueous medium from 161b, the discharge flows are collectively crushed by a high-speed gas stream from a liquid jet port 162 into minute droplets, then, the droplets are crashed against a flow-blocking body 190 to reaggregate for the production. According to the production of the present invention, since removal of solvent is easy, and there is no need of defoaming operation, it becomes possible to produce liposome dispersion efficiently.

Abstract: The prevent invention provides a novel gas treatment method for a fluid, and a method for producing a milk using the same, which is industrially extremely advantageous in terms of cost and efficiency. A gas treatment method for a fluid, comprises, while discharging a fluid from a fluid discharge port 161 of a two-fluid nozzle 160, crushing the discharge flow into fine droplets by a gas stream from a gas injection port 162, and then allowing the droplets to strike against a flow prevention member 190 and thereby agglomerate, so as to perform a gas treatment (gas addition, gas replacement, deaeration, or sterilization (disinfection)). According to the method for producing a milk, nitrogen is used as the gas stream, whereby homogenization and nitrogen replacement of dissolved oxygen can be performed in one and the same process.