Vitamin C effervescent granules and preparation method thereof

The invention provides vitamin C effervescent granules and a preparation method thereof, and belongs to the technical field of vitamin C effervescent granules. The preparation method comprises the steps of vitamin C pretreatment, stabilizer preparation, additive preparation and granulation. The vitamin C pretreatment step is as follows: vitamin C powder is placed in a nitrogen atmosphere for plasma ball-milling treatment, the ball-milling time is 24-26 min, the discharge voltage is 6-10 kV, the discharge current is 66-70 mA, the discharge frequency is 26-28 kHz, soybean lecithin and xylitol are added after the plasma ball-milling treatment is finished, the mixture is uniformly mixed, the mixture is placed at 0.3-0.5 DEG C for standing for 38-42 min, and the mixture is cooled to room temperature. The pretreated vitamin C is obtained. The vitamin C effervescent granules prepared by the preparation method disclosed by the invention are short in disintegration time limit at low temperature, and still maintain rel