Milk is a nutritious food and an integral part of many people's daily breakfast and dinner. However, there has been a recent claim that milk is full of preservatives, which are not only toxic but also carcinogenic, which has caused panic among many people.
1. The shelf life of milk and its preservative methodClosely related
For example, pasteurization and UHT sterilization. The high-temperature sterilization method is to heat the milk at 137 ° C to 145 ° C for 4 15 seconds, which can kill almost all bacteria, and the shelf life can be as long as three months to half a year, ** low.
The pasteurization rule is to kill some bacteria after the milk is processed at 72 °C and 85 °C, and the shelf life is not higher than 16 days, which is relatively high, but also retains some nutrients. Choose pure milk with brand protection can be drunk with confidence, and there is no need to add preservatives.
Second, some people think that the preservatives in milk are preventionRot, this perception is wrong
Preservatives are chemicals that are added to prevent food from spoiling. And milk does contain some chemicals, but they are not preservatives, but naturally occurring and harmless to humans.
For example, milk contains nutrients such as protein, calcium, vitamins, etc., which play a vital role in protecting the freshness of milk and extending its shelf life.
3. Chemicals in milk andNot a preservative.
Instead, they are naturally occurring nutrients that help preserve the freshness of milk and extend its shelf life. When we choose milk, we should pay attention to the quality and shelf life of milk, and try to choose well-known brands purchased through formal channels.
Fourth, the following is 3Kind of "milk" that we need to drink less
1. Plant-based milk
Although plant-based milk and cow's milk have similar textures and tastes, their nutritional content and production process are very different from traditional cow's milk.
Plant-based milks may have added chemicals such as coloring, flavors, etc., which can have negative effects on human health. Therefore, we need to choose real milk instead of alternatives such as plant-based milk.
2. Freshness enhancer milk
In some supermarkets and convenience stores, we may see some specially processed "milk" that has a long shelf life and is relatively low.
However, this milk actually extends its shelf life by adding freshness enhancers. Freshness enhancers are chemicals that can extend the shelf life of food, but excessive intake may have adverse effects on human health.
3. Feed milk
Some people may think that feeding cattle feed can produce milk with higher nutritional value. However, there may be a certain gap in the nutritional value of feed milk compared with conventional milk.
Moreover, the feed may contain harmful substances that can enter the milk and have a negative impact on human health. Therefore, we need to choose milk purchased from formal channels rather than alternatives such as feed milk.