The shelf life of rice varies according to its processing methods and packaging methods. The shelf life of vacuum-packed rice can reach 12- 18 months; Ordinary packaging may only be 6- 12 months; The shelf life of bulk rice is not clearly defined, generally 3 months in summer and 6 months in autumn and winter. After the expiration of the shelf life, the nutrients of rice will be lost.

It is humid and hot in spring and summer, and the shelf life of rice with high moisture content is only 3 months. However, imported rice usually has an additional air drying process, which greatly reduces the moisture content and the shelf life will be as long as 24 months. The shelf life marked on the bagged rice is determined by the manufacturer through experiments, and the competent departments of quality supervision and food and medicine supervise it through sampling inspection.

The longer the rice is stored, the easier it is to lose nutrients, and the vacuum-packed rice will also be affected by moisture in the air after it is opened. After people buy back rice, it is best to store it in a dry and closed rice jar. Therefore, a family of three should choose small packaged rice, and it is best to eat it within one or two months.

Preservation method of rice

Although the storage of rice is "stored in a cool and ventilated place with a shelf life of 6 months", during the storage period, even if there is no fever, insects or mildew, its edible quality is gradually declining, resulting in a decrease in nutritional components. If you want to keep the taste and quality of new rice, you can store it in a low temperature environment, such as in a refrigerator, which can reduce the oxidation of rice oil and the breeding of Mi Chong. The following methods can prevent rice from mildew and insects.

Method 1: Put the bought rice into a sealed rice jar and dig a small pit in the middle of the rice. Put dried kelp into the pit according to the proportion of 5kg rice into 50g dried kelp, bury the kelp with rice, and then seal the cylinder head for storage. Kelp has good moisture absorption and insecticidal effects, and can kill acaroid mites and molds in rice.

Method 2: Divide 50g pepper evenly into 4 parts, each part is wrapped with gauze and tied tightly with cotton thread. Put 10kg rice in a covered rice jar, put pepper wrapped in gauze in the four corners of the rice jar and bury it in the rice. This can effectively prevent rice adults.

Method 3: put 100ml liquor in the bottle and open the bottle cap. Insert the bottle filled with white wine into the rice, the bottle mouth is exposed, and then seal the rice jar for preservation. Ethanol gas volatilized from liquor can prevent rice from mildewing.

Reference Baidu Encyclopedia-Rice