air-blast freezing with air-velocity at 6.5 m/s, 35 C and cryogenic freezing at 60 C is shown in Fig. 3. It could be seen that the spacing between the muscle fiber of the 1st abdominal segment (cell tissue next to the head portion) of the shrimp meat increased in the slow freezing method, shelf freezing and air-blast freezing with air-velocity 6.5 m/s.