Soft shell crab dry powder and processing method thereof

[0021] 1) Clean and sterilize the soft-shell crabs and freeze them at -80°C for 24 hours;

[0022] 2) Vacuum freeze-dry the frozen soft-shell crabs, maintain them at 0°C, -10°C, -20°C, -50°C, -70°C, and -80°C for half an hour, and finally lower the temperature to -86°C , and maintain for 1.5 hours;

[0023] 3) In a vacuum state, carry out sublimation drying, the condition of sublimation drying is a vacuum of 1.3 Pa; the temperature of sublimation drying is -35°C, so that the water content of soft shell crabs is reduced to about 10%;

[0024] 4) Heating the vacuum-dried soft-shell crabs, performing analysis and drying, so that the water content continues to decrease until the water content falls below 5%.

[0025] The above-mentioned processed soft-shell crabs can be sold in vacuum packaging after being pulverized by a small-sized pulverizer.

[0027] 1) Soft-shell crabs are sterilized and frozen at -80°C, and the freezing time is preferably 48 hours;

[0028] 2) Vacuum freeze-dry the frozen soft-shell crabs, maintain them at 0°C, -10°C, -20°C, -50°C, -70°C, and -80°C for half an hour, and finally lower the temperature to -86°C , and maintain for 1.5 hours;

[0029] 3) Carry out sublimation drying in a vacuum state, the sublimation drying condition is a vacuum of 13 Pa, and the sublimation drying temperature is not higher than -30°C; the water content of the soft shell crab is reduced to below 10%;

[0030] 4) Heating the vacuum-dried soft-shell crabs, performing analysis and drying, so that the water content continues to decrease until the water content falls below 5%.

[0031] The soft-shell crabs processed above are pulverized into soft-shell crab powder through a small pulverizer.