Chestnut preservation method and chestnut preservation system

Abstract

The invention relates to the technical field of chestnut cultivation, and especially relates to a chestnut preservation method and a chestnut preservation system. Picked fresh chestnuts are put into gunny bags after being aired for 2-3 days, and then are stacked in the preservation system for preservation. In the preservation system, every two adjacent bags of the chestnuts are arranged at a vertical interval of one meter and at a horizontal interval of two meters. During a preservation process, an entrance door and an exit door respectively located at the front end and the rear end of a cold storage are opened every 3-5 days, and air coolers are switched on for air-exchange for 1-2 hours when the doors are opened. By employing the method to preserve the chestnuts, the preservation is scientifically managed and is higher in efficiency, the weight loss ratio of the chestnuts can be controlled to be 2.5-3%, the mildew ratio is controlled to be 0.3%, the length of a germ is not larger than 0.5mm, the sugar degree is within 30, all physical and chemical indexes of the fresh chestnuts basically remain unchanged after the fresh chestnuts are preserved for 12 months, and great economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of chestnut cultivation, in particular to a chestnut preservation method and a preservation system thereof. Background technique [0002] Chestnut is a famous dried fruit of my country's special product, which is favored by consumers for its unique flavor and rich nutrition. In recent years, chestnut production has developed rapidly, with a wide cultivation area and high yield. However, due to the high water content and high metabolism of fresh chestnuts, storage is quite difficult, which restricts the development of chestnut production to a large extent. At present, there are many storage methods used in the market, and four types are more commonly used: 1. Sand storage, which is easy to operate and low in cost. The disadvantage is that the storage period is short and the storage effect is not good; This method is easy to operate and has a wide range of applications. The disadvantage is that the preservat...

AI Technical Summary

Problems solved by technology

However, due to the high water content and high metabolism of fresh chestnuts, storage is quite difficult, which restricts the development of chestnut production to a large extent.

At present, there are many storage methods used in the market, and four types are more commonly used: 1. Sand storage, which is easy to operate and low in cost. The disadvantage is that the storage period is short and the storage effect is not good; This method is easy to operate and has a wide range of applications. The disadvantage is that the preservative is usually prepared from related chemicals, which affects the taste and nutrition of chestnuts, and some chemical reagents are not good for human health; 3. Low temperature storage can be used immediately. The method of natural cold source or artificial cooling keeps the storage environment at a low temperature. This method has a better effect on storing chestnuts, but its disadvantages are that it has higher requirements for temperature and storage environment, and the cost is high, so it is difficult to popularize in mountainous areas; 4 . Controlled atmosphere storage, that is, to adjust the gas composition in the storage place under low temperature conditions, so as to make it beneficial to the storage of fruits and vegetables, so as to achieve the purpose of freshness preservation. Compared with the general storage method, the preservation time of this storage method is more than twice as long. And the taste changes less, and its disadvantage is that the investment in the air conditioning device is too large

Therefore, how to make chestnuts have longer storage time, fewer changes in taste and chroma, easy storage methods, low cost and can solve the problem of chestnut pests that invade the female flower ovary during the flowering period has become an urgent problem to be solved at present.

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