The invention belongs to the technical field of agricultural product fine
processing, and particularly discloses a hop freshness locking
system and method based on stepped
quick freezing and low-temperature crushing, the
system comprises a picking treatment module, a pre-cooling module, a low-temperature crushing module and a packaging
cryopreservation module, the picking treatment module comprises a picking vehicle, a fruit-removing magnetic-separation
impurity-removing
machine and a mixing
pool; the pre-cooling module comprises a first low-temperature workshop, and a conveying belt and an industrial air cooler are arranged in the first low-temperature workshop. The low-temperature crushing module comprises a low-temperature workshop II; a
crusher and a mixer are arranged in the low-temperature workshop II; the packaging and
cryopreservation module comprises a third low-temperature workshop and a refrigerating chamber. A quantitative
packaging machine, a primary vacuumizing device, a
nitrogen making
machine, a secondary vacuumizing device and a sealing
packaging machine are arranged in the third low-temperature workshop. Through stepped
quick freezing and a whole-course low-temperature environment, the heat damage and oxidation speed in the
processing process are greatly reduced, the
shelf life is prolonged, and the batch consistency of products is ensured.