The invention belongs to the technical field of
food processing of
fruits and vegetables. In order to solve the technical problems of
high sugar content and high
sulfur content of preserved apricots, fresh apricots are taken as raw materials, a
sugar-soaking process for multiple times is changed to a
sugar-soaking process once, and a process for inactivating enzymes by microwaves is used for replacing the traditional sulfuring process to produce
sulfur-free preserved apricots and
sulfur-free
apricot juice. The technical scheme is characterized in that the process for producing the sulfur-free preserved apricots mainly comprises the steps of color protection by inactivating enzymes by microwaves and preparation of the sulfur-free
apricot juice. The optimal process parameters of
microwave treatment are as follows: the power is 600w, the weight of the fresh apricots is 45g, and the
heating time is 180s. The product of the sulfur-free preserved apricots has golden color, good luster and proper sour and
sweet taste. The residual liquid generated after the
sugar-soaking process is used for producing the sulfur-free
apricot juice, and the product of the sulfur-free apricot juice has yellowy color and strong apricot
flavor. The ratio of the residual liquid after the sugar-soaking process to the
purified water is 1:5. The adding amounts (g / mL) of additives are as follows: white granulated sugar
powder is 1.0%,
citric acid is 0.1%, and CMC-Na is 0.1%. The method is mainly used for producing preserved apricots and apricot juice. On the premise of ensuring that the preserved apricots have low sugar content and no sulfur, the method ensures the unique sensory quality of the preserved apricots and has the advantages of short
treatment time for apricot fruits, good quality of the preserved apricots and high production efficiency; and the
intermediate product residual liquid generated after the sugar-soaking process can also be used for producing the sulfur-free apricot juice.