Konjac glucomannan microballoon with uniform dimension and preparation method thereof

The invention relates to konjac glucomannan microballoons with uniform dimension and a preparation method thereof. The konjac glucomannan microballoons are of a gel type or a macroporous type and have uniform dimension and average particle size in a controllable scope of 10-200 mum. The preparation method comprises the following steps: first degrading konjac glucomannan to obtain a konjac glucomannan aqueous solution as a water phase (W); using a water-insoluble solution dissolved with oil soluble emulsifier as an oil phase (O); pressing the water phase into the oil phase to obtain a W / O type emulsion; adding a cross-linking agent into the emulsion dropwise and stirring for reaction; forming konjac glucomannan into microballoons through crosslinking, washing and collecting to obtain the konjac glucomannan microballoons with uniform dimension. The konjac glucomannan microballoons have uniform dimension and controllable particle size; microballoons do not gather, so that a gathering phenomenon will not occur