The invention discloses an ultra-long-term
grain storage method and a
production line, and belongs to the technical field of
grain storage. According to the ultra-long-term
grain storage method disclosed by the invention, the grains are subjected to
impurity removal, sterilization,
dehydration and
drying treatment through scientific means, and are matched with quick-freezing and vacuum freeze-
drying technologies, so that on one hand, the quick-freezing can shape the grains, lock the freshness of the grains, and relieve heat rise and self-heating of the grains generated in the previous process, thereby making preparations for vacuum freeze-
drying treatment; the freeze-drying treatment efficiency is improved; on the other hand, the grain characters can be kept to the maximum extent, the positions originally occupied by water of the freeze-dried grains are changed into gaps, the phenomenon of
broken rice can be reduced, the
shelf life of the grains is effectively prolonged, the subsequent rehydration effect is faster and better, and the
nutrition and
flavor of the grains are kept; and vacuum packaging is matched, so that the storage life of the grains is remarkably prolonged. In general, through cooperation of grain treatment, the problems that grain storage is large in comprehensive loss and short in rotation time can be solved, toxic and harmful substances are few,
energy consumption is low, ultra-long-time storage can be achieved, and the storage life can even reach 30 years or above; in addition, grain
assembly line treatment can be achieved, the treatment efficiency is high, the yield is large, loss is small, and the large-scale storage requirement of grains can be met.