Freeze-dried truffle slice production method
A production method and technology for freeze-dried tablets, which are applied in the field of new biological products, can solve the problems of blackening, inconvenient use, troublesome preservation and transportation of quick-frozen products, and achieve long shelf life, broad market prospects, and convenient transportation and use. Effect
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Embodiment 1
[0048] A. Raw material processing: collect fresh truffles in the production area, wash and select truffles with a diameter of 5-8cm, slice them, soak them in edible ethanol containing 0.25% citric acid and 0.07% TBHQ by weight for 2min, and dry them at 8°C Dry surface moisture.
[0049] B. Freezing: put the raw materials processed in A into a vacuum freeze dryer for freezing, the freezing speed is 1°C / min, the final freezing temperature is -30°C, and the temperature is kept for 2 hours.
[0050] C. Vacuum drying: evacuate the vacuum freeze dryer to 30 Pa (vacuum degree), control the drying temperature at -20° C., and dry for about 5 hours.
[0051] D. Desorption drying: raise the drying temperature to 45°C (heating rate 2°C / min), gradually reduce the vacuum pressure to 8Pa, and dry for 6 minutes.
[0052] E. Packaging: Take out the dried product in time, and pack it in an aluminum foil composite bag filled with nitrogen and sealed under aseptic conditions.
[0053]F. Storage...
Embodiment 2
[0060] A. Raw material processing: collect fresh truffles in the production area, wash and select truffles with a diameter of 3-5cm, slice them, soak them in edible ethanol containing 0.35% citric acid and 0.04% TBHQ by weight for 1min, and dry them at 5°C Dry surface moisture.
[0061] B. Freezing: put the processed raw materials in A into a vacuum freeze dryer for freezing, the freezing speed is 2°C / min, the final freezing temperature is -25°C, and keep warm for 1h.
[0062] C. Vacuum drying: vacuumize the vacuum freeze dryer to 20Pa (vacuum degree), control the drying temperature at -18°C, and dry for about 3 hours.
[0063] D. Desorption drying: raise the drying temperature to 40°C (heating rate 2°C / min), gradually reduce the vacuum pressure to 5Pa, and dry for 5 minutes.
[0064] E. Packaging: Take out the dried product in time, and pack it in an aluminum foil composite bag filled with nitrogen and sealed under aseptic conditions.
[0065] F. Storage: Store in the dark ...
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