freezing time, freezing rate, freezing loss and cutting force of white shrimp frozen by shelf, air-blast and cryogenic freezing with/without precooking were investigated. Shelf freezing was done at 40 C 2 C while air-blast freezing was carried out at 35 C 2 C, and cryogenic freezing was done at 35 C, 40 C and 60 C.