Is it okay to heat milk in a bag?

　　Experts believe that heating milk in this way is unscientific and not good for the human body. healthy。

　　Tang Saizhen, an expert from the China Packaging Technology Association, told reporters that the reason why liquid milk has a shelf life of several days, one month or even several months is because its packaging materials are made of barrier polymers or aluminum foil packaging materials.

　　Although both packaging materials are safe and reliable, there is still a problem with their use. The main component of the polymer material is polyethylene, which will decompose and change when the temperature reaches 115 degrees Celsius, and it is not resistant to microwave high temperatures, so the bagged milk in this package cannot be boiled in boiling water or heated in a microwave oven. Milk bags packaged in aluminum foil are metallic and will catch fire when heated in the microwave, so it is absolutely forbidden to heat them in the microwave.

　　In fact, it is best not to heat and drink bagged milk. Relevant professionals believe that because it has been sterilized at high temperatures, milk will not produce bacteria during its shelf life. If heated at high temperatures, the nutrients in the milk will be destroyed, and the vitamins added to the milk will also be destroyed.

　　Some people are not used to drinking milk that is too cold. Experts suggest that since the temperature is below 100℃, ordinary plastic will not cause problems. You can use boiling water below 100℃ to warm the milk bag. If you need to heat milk in a microwave oven, you must pour it into a microwave-friendly container and then heat it.

　　There are still some brands of bagged milk that do not indicate the drinking method on the packaging. In this regard, Tang Saizhen called on dairy manufacturers to pay attention to this issue and clearly indicate the drinking method on the packaging.