1. One is that rice is easily contaminated by Penicillium insulatum, Penicillium citrinum, Huang Qing mold and other molds during storage because of its high water content. After that, mold multiplied in large quantities under suitable conditions and produced toxic metabolites, which led to the yellowing of rice. This rice is also called yellow rice. Yellow rice contains a variety of toxins, which can cause liver diseases, and some can also cause kidney and nerve damage, which has a strong carcinogenic effect.
2. After the rice is harvested, it will turn yellow if the wet grains are stored together due to the rainy weather. Yellow rice is also yellow, called yellow grain rice. Yellow rice is generally non-toxic, but its nutritional value and quality are worse than that of white rice, and it is easy to pollute mold under suitable conditions.
It is best to buy rice in small quantities for many times and store it in a dry and ventilated place. In the north, rice can generally be stored for 3 to 6 months, but in the south, it is best not to exceed 3 months.
Extended data:
Storage method of rice: It is best to buy a small amount of rice and store it in a dry and ventilated place. In the north, rice can generally be stored for 3 to 6 months, but in the south, it is best not to exceed 3 months. When storing rice in a rice jar at home, dry the container thoroughly first, then put the rice in and cover it. When the amount is small, it can be bottled in coke and placed in a dry and ventilated place to avoid high temperature and light.
If you need to pack more rice, you can choose a large-capacity bottle. Before you put the rice in the bottle, you must make sure that the rice is dry and tighten the lid quickly after you put it in. This not only saves space, but also prevents rice from being worm and moldy. Besides rice, red beans, purple rice, millet and other grains can also be preserved in this way.
If you can accept the taste of pepper, you can also wrap some pepper particles in gauze, put them in plastic bottles filled with rice, and then close the lid. Zanthoxylum bungeanum has anthelmintic effect, which makes the fresh-keeping effect of grain better.
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