Mold contamination and prevention
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Prevention:
(1) After harvesting, the body should be dried or dried as much as possible to reduce the surface humidity of the body.
(2) The plastic bags used for packaging must be thin and have good air permeability to avoid fruit body hypoxia and affect respiratory metabolism, resulting in reduced resistance of the body of the genus;
(c) Reduce the temperature of the storage environment. The storage temperature is too high, pathogens multiply faster, and the body of Zhizhi is vulnerable to rot.
(d) Sell as soon as possible.
During the storage of Ganoderma lucidum, the internal and external quality indicators such as color, odor and nutrient content of the Ganoderma lucidum are degraded due to environmental factors, which are called aging.
(I) Various factors that cause aging
1. Temperature is too high.
If the temperature is too high, the enzyme activity in the body increases and the aging rate increases.
2. Humidity is too high.
The moisture content of the body exceeds 13%, and the decomposition and destruction of its nutrients is accelerated.
3. The effect of light.
Illumination catalyzes the change of lipids and pigments, resulting in the continuous decomposition of lipids, resulting in changes in the color and odor of the body.
4. The role of oxidation reaction.
The aging of the body of the zizhi, the oxidation reaction plays a major role. Because various ingredients in the body of ChiZi come into contact with oxygen too much, it will accelerate the decomposition and thus lose its unique color and taste.
(II) Control measures for aging
1. Choose suitable packaging materials to achieve moisture-proof, sealed and opaque as much as possible;
2. The packaging container is evacuated into a vacuum and can also be filled with a beneficial gas. For example, nitrogen can prevent oxidation, and crown gas can prevent mold.
3. Store at a low temperature, preferably at a temperature of 1.5°C;
4. Put anhydrous calcium chloride or discoloration silica gel into the packaging container to keep the ganoderma dry;
5. Sell ​​as soon as possible and shorten storage time.