Oxygen reduction and humidity control curing agent for tobacco leaf storage

Abstract

The invention provides an oxygen reduction and humidity control curing agent for tobacco leaf storage, comprising a controlled-atmosphere curing agent and a humidity controlled curing agent which are in coordinated use with a use ratio range of (2-10):1. The controlled-atmosphere curing agent comprises the following components: 40-80% of reduced iron powder or pyrite powder, 1-8% of calcium oxide, 0.1-2% of mould proof assistant, 10-21% of activated carbon, 0-12% of sodium chloride, 1-15% of water absorbent, 3-15% of pearlite, 0.1-5% of first water retaining agent, 2-10% of diatomite and 0-10% of water. The humidity controlled curing agent comprises the following components: 30-60% of drier, 2-30% of second water retaining agent and 5-30% of pearlite. The curing agent for tobacco leaf storage can enable the oxygen reduction process to be mild and simultaneously improve dehumidification speed. The invention also provides a manufacturing method of the oxygen reduction and humidity control curing agent for tobacco leaf storage.

Description

technical field [0001] The invention belongs to the technical field of tobacco storage, and relates to a tobacco storage and curing agent. Background technique [0002] The sealed ultra low-oxygen (Ultra low-oxygen ULO) storage method originated in the United Kingdom. The principle of this storage method is to control the oxygen in the storage environment below 2%, so that the respiratory activity of the stored items is inhibited. It is basically in a dormant state, and the nutrients consumed by breathing are reduced, so the nutritional content and quality of the items can be better maintained. At the same time, the ultra-low oxygen environment can also inhibit and kill microorganisms and plant diseases and insect pests in the storage environment. [0003] The sealed ultra-low oxygen storage method has been widely used in the fields of items that need to be stored, such as fruits, grains, and tobacco. In the field of tobacco, because the tobacco leaves need to be stacked i...

AI Technical Summary

Problems solved by technology

This oxygen reduction method is an exothermic reaction in thermodynamics. Because the oxygen reduction rate is too fast (generally, the oxygen concentration has dropped below 2% within 15 days), the heat released makes the local temperature in the ash stack too high. In severe cases, the temperature in the center of the tobacco leaves will not be released, and the tobacco leaves will lose oil, heartburn, and hardening, which will cause the tobacco leaves to lose their use value

[0005] 2. Slow dehumidification

Tobacco leaf storage usually has an optimal range of relative humidity in the space. At present, cigarette factories generally require the relative humidity of the tobacco leaf storage space to be kept within the range of 50%-65%, and the existing air conditioning agents cannot control the relative humidity of the environment.

If the tobacco leaves are in a high humidity and high temperature environment for a long time (such as summer in the south), due to the presence of mold in the tobacco leaves, and molds are easy to grow under high humidity and high temperature conditions, resulting in mildew in the tobacco leaves and loss of use value

However, the dehumidification speed of the currently used agents is slow, so it is likely to cause mildew in tobacco leaves

Since the existing air-conditioning agents for tobacco leaves are made by mixing substances with the functions of reducing oxygen and dehumidification at the same time, this makes the disadvantage of slow dehumidification speed of the air-conditioning agents more obvious.

[0006] 3. Dew condensation occurs during the sealed storage of tobacco leaves

If dew condensation occurs on the tobacco leaves, it means that the local humidity in the condensation place is too high, which increases the probability of mildew on the tobacco leaves. decline

[0007] 4. Existing air conditioners for tobacco leaves can reduce CO produced in the alcoholization process of tobacco leaves 2 absorb less CO 2 Too high concentration will inhibit the alcoholization of tobacco leaves (with CO 2 concentration, the balance of the alcoholization reaction is destroyed, and the alcoholization is inhibited), which is not conducive to the continued alcoholization of tobacco leaves

For air-conditioning agents packaged in kraft paper, the oxygen reduction rate is too fast, and condensation is prone to occur

For the modified atmosphere curing agent packaged in plastic film with irregular number of holes, the oxygen reduction rate may be too fast or too slow: when the number of holes is large, the oxygen reduction rate is too fast and condensation is easy; When the number of holes is small, the oxygen reduction rate is too slow, and the oxygen concentration cannot be reduced to below 2% within 30 days, which may damage the quality of tobacco leaves.