The heating package of self-heating rice is based on the principle of automatic heating when it meets water. The heating bag contains magnesium and zinc in total, which can be heated automatically after being mixed with water. There is quicklime (calcium oxide) in it, and a lot of heat will be generated in the process of adding water, which will heat the rice.

The processing of self-heating rice is usually based on gelatinization and retrogradation of starch. More than 70% of rice is starch. When heated to a certain temperature, starch will be gelatinized (matured) and denatured, and the degree of starch gelatinization is mainly controlled by moisture and temperature.

Extended data:

1, the heat of food can meet the needs of military labor intensity above medium level.

2, the variety and nutrition are rich, which can meet the different needs of north and south tastes.

3, the weight is enough, each serving can be eaten by 1~2 people at the same time.

4, the special production process of military products, never add preservatives.

5. The heater has the advantages of small volume, high thermal efficiency, long heating time and no environmental pollution.

Baidu encyclopedia-personal self-heating food