METHOD FOR VACUUM FREEZING OF STRAWBERRIES Russian patent published in 2024 - IPC A23B7/04 F25D13/00 

FIELD: food industry.

SUBSTANCE: invention relates to food industry, namely to production of frozen strawberries. Method for vacuum freezing of strawberries is characterized by that a product with thickness of 90 mm is frozen in a vacuum-freezing chamber, wherein after 80 minutes, when temperature on product surface reaches cryoscopic minus 0.7 °C, then the vacuum pump is switched on, reducing pressure in chamber from atmospheric 101 kPa to 10 Pa at rate of 8 m³/h, and an ultrasonic generator with a radiation frequency of 80 kHz, which is turned off after 30 minutes when the temperature in the product reaches minus 20 °C, and freezing is carried out until the temperature in the product reaches -40 °C for 30 minutes.

EFFECT: invention makes it possible to reduce duration of product freezing, to reduce deformation and destruction of internal structure of strawberry.

1 cl, 1 tbl, 4 ex