Microencapsulation method for preparing hydrotropic substance serving as core material by using complex coacervation method

The invention relates to a microencapsulation method for preparing a hydrotropic substance serving as a core material by using a complex coacervation method. The method is simple in process and low in cost, and the product has high encapsulation rate. The method comprises the following steps of: (1) weighing specific protein and polysaccharide in a certain ratio, stirring and dissolving in hot water to form a wall material solution; (2) weighing a certain mass of hydrotropic core material substance, adding an oil phase substance and an emulsifier in a certain mass ratio, and performing high-speed dispersion to form water/oil (W/O) emulsion; (3) directly pouring the emulsion into the wall material solution, stirring at the constant temperature of 45 DEG C, regulating pH by using 10 percent acid, and reacting for 15 minutes; (4) cooling to the temperature of below 15 DEG C, regulating the pH to 6.0, and adding glutamine transaminase for solidifying; and (5) filtering to obtain a wet capsule product. A dry microcapsule product can be obtained by freeze drying or spray drying.