A method of hot air-far infrared-microwave three-energy combined drying and conditioning taro quality
A combined drying and far-infrared technology, used in the preliminary treatment of promoting the drying of solid materials, heating to dry solid materials, and drying solid materials, etc., to achieve the effect of obvious homogenization advantages, large amount of conveyed materials, and low production cost.
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[0022] Fresh and complete taro is peeled after washing the surface soil, cut into slices with a thickness of 3mm, blanched for color protection (1.5% NaCl, 0.2% citric acid solution), the blanching temperature is 80-95°C, and the blanching time is 2 ~4min, quickly cool the blanched taro slices to room temperature with cold water, then soak the taro slices in 1-3% maltodextrin for 20-30min; take out the soaked taro slices and drain the surface water, Place it in a freezer at -18°C for frozen storage; then put the taro slices into a hot air-far infrared-microwave three-energy combined drying equipment for drying (Nanjing Sanle Microwave Technology Development Co., Ltd.): hot air temperature 200-320°C, Far-infrared radiation intensity 0.28~0.84W / cm 2 , The power of the first stage of microwave heating is 1000~3000W, the power of the second stage is 1000~3000W, the power of the third stage is 0~1000W, the speed of the conveyor belt is 2~5m / min, and the cycle is 1~4 times. After d...
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