The invention relates to the technical field of
vegetable oil processing, and particularly discloses a
vitex tea oil preparation method which comprises the following steps: S1,
raw material pretreatment: selecting mature
vitex seeds, and sequentially cleaning,
drying and crushing; s2, low-temperature cold pressing: pressing the pretreated
vitex negundo seeds for 1-2 hours under the conditions that the temperature is 30-45 DEG C and the pressure is 15-25 MPa, and collecting cold-pressed
crude oil; s3,
centrifugal filtration: centrifuging the cold-pressed
crude oil for 15-25 minutes under the conditions that the rotating speed is 3000-4000 rpm and the temperature is 35-45 DEG C, so as to obtain clarified
crude oil; s4, enzymolysis degumming: adding
phospholipase into the clarified crude oil, carrying out enzymolysis for 2-3 hours under the conditions that the temperature is 45-55 DEG C and the pH is 5.5-6.5, and carrying out centrifugal degumming after
enzyme deactivation, so as to obtain degummed oil; s5, low-temperature refining: sequentially carrying out deacidification, decoloration and deodorization treatment on the degummed oil to obtain refined oil; s6,
antioxidant treatment: adding a natural
antioxidant into the refined oil, mixing and filtering to obtain refined
vitex negundo tea oil; and S7, sterilizing and packaging: carrying out ultrahigh-temperature instantaneous sterilization on the refined vitex tea oil, and then carrying out sterile packaging, so as to obtain the finished product vitex tea oil.