Anthocyanin corn stigma health-care tea and preparation method thereof

The invention provides anthocyanin corn stigma health-care tea and a preparation method thereof. The preparation method comprises the following steps: (1) adding black corn stigma into saline water, performing ultrasonic treatment, sterilizing, cleaning and drying; (2) pre-freezing: carrying out vacuum freeze-drying at the temperature of 20 DEG C below zero to 30 DEG C below zero and the pressure of 60 Pa-90 Pa to obtain freeze-dried black corn stigma; (3) gradually raising the temperature to the normal temperature of 26-28 DEG C at the rate of 3-5 DEG C/min, and gradually raising the temperature to 55-65 DEG C at the rate of 0.5-1.5 DEG C/min under the pressure of 26-30 Mpa to obtain puffed black corn stigma; (4) mixing the puffed black corn stigma with glucose and peptone to obtain a solid culture medium, inoculating the activated hericium erinaceus, and performing solid culture; and (5) taking out the fermented black corn stigma, and drying at low temperature to obtain a finished product. The anthocyanin c