Method of pretreatment for chestnut storage

Abstract

The invention discloses a method for chestnut storage and pretreatment. Chestnuts are added into a pressure tank, and the chestnuts are added from a feed port, and enter the pressure tank through a two-stage feed valve to isolate the air pressure, and the chestnuts are vibrated and transported in the pressure tank, and finally The air pressure is isolated and discharged out of the pressure tank through the two-stage discharge valve; the chestnut undergoes microwave radiation during the vibration conveying process; on the one hand, the compressed air is constantly blown into the pressure tank to keep the pressure inside the pressure tank at 0.2‑0.8MPa, on the other hand The circulation fan is used to extract air from the pressure tank, the extracted humid and hot gas is cooled, dried and dehydrated, and then input into the pressure tank to realize the pressure gas circulation. The invention can efficiently realize continuous microwave back-pressure chestnut pretreatment, microwave energy is completely absorbed by materials, realizes thermal effect, promotes water regulation, enzyme elimination, disinfection, sterilization, and insecticide, prevents particle explosion, and significantly improves the storage quality of chestnuts.

Description

technical field [0001] The invention relates to a method for pretreatment of chestnuts before storage. Background technique [0002] Fresh chestnut is rich in water, trace elements, sugar and starch. It is a nutritious and delicious food. However, chestnuts are usually difficult to store. They are prone to fermentation, mildew or moth during storage. The existing low-temperature storage technology cannot Completely avoid chestnut fermentation, mildew and borers during storage. [0003] Microwave energy is selectively absorbed by the material and has the characteristics of good penetration. The whole inside and outside of the material can realize rapid microwave thermal effect, promote efficient and rapid removal of water, and can inactivate chestnuts, and can also kill parasites at the same time to achieve sterilization. , effectively extend the shelf life. However, because the outer layer of chestnut pulp is covered with a waxy outer film and a hard shell, it will affect ...