What's the difference between red dates and grey dates?
1. Jujube grows in Loulan area, where the temperature difference between day and night is relatively large, so it has the characteristics of thin skin but not easy to crack. If jujube is cooked for a long time, the skin will crack, but jujube will not. Although the skin of Zizyphus jujuba is thin, it is elastic and will not crack even if cooked, so the difference between Zizyphus jujuba and Zizyphus jujuba can be distinguished from the elasticity of the skin.
2. The color of Zizyphus jujuba is gray before maturity, so it is called Zizyphus jujuba, and the color is red after maturity. The color of jujube is generally purplish red, and jujube has the function of beauty beauty.
3. The shape of Zizyphus jujuba is oval, the shape of Zizyphus jujuba is neither too big nor too small, the shape is even, the fruit of Zizyphus jujuba is round and full, and the pulp of Zizyphus jujuba is green and white. The shape of jujube is different from that of grey jujube. Jujube is made from the fruit of jujube tree by drying and drying. Jujube will lose water and its shape will crack. Jujube is not easy to store, but grey jujube is easy to store.
Extended data:
Fresh jujube is called jujube after dehydration and drying. Jujube used for storage should be moderately dry, without damage, pests and diseases, with rosy color and neat size.
Jujube has high sugar content, great hygroscopicity and oxidation, so the storage temperature and humidity should be reduced as much as possible during storage. Low temperature is the main means to reduce the loss of vitamin C in jujube fruit, and drying is not conducive to the growth and reproduction of microorganisms.
During the storage of jujube, in addition to fermentation deterioration and mildew caused by excessive humidity, pests such as rice borer, wheat moth and thief will also do harm to jujube. Therefore, we should also pay attention to rat prevention.
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Baidu Encyclopedia-Jujube