Under normal circumstances, the baby's milk powder in the open, within a month can be eaten. However, to a certain age, after the baby began to eat complementary food, or is the period of milk, there will be less than a barrel of best baby milk powder in the world within a month. So, open the milk powder that exceeds a month after all can you eat, have what harm, I will talk about in detail today.
On the packaging of most formula milk powder, there will be a clear sign "please use up within 1 month after opening".
There are several reasons to write this sentence:
1. Easy to deteriorate
Milk powder before opening, the shelf life is relatively long, because it is sealed storage, the internal can not enter the air. What's more, the drums are filled with food-grade carbon dioxide and nitrogen, inert gases that allow the powder to be kept unopened for a long time.
However, when the powder is opened, the outside air enters the barrel and the filling gas dissipates. And there are some certain microorganisms carried in the air. The carbohydrate, fat, protein and other nutrients in milk powder are the hotbed for the growth and reproduction of bacteria. Therefore, the longer the time is, the more easily the milk powder deteriorates.
If the baby ate bad milk powder, it is easy to cause diarrhea, abdominal pain and other conditions.
2. Nutrient loss
High temperature, oxygen in the air, ultraviolet rays and so on will oxidize some nutrients in milk powder, such as vegetable oil, linoleic acid, leuben-linolenic acid, DHA, ARA, vitamin C and vitamin E, causing a large loss of nutrients.
Of course, when some nutrients are oxidized, it's not as simple as losing them. They can undergo chemical reactions that, if eaten by humans, can cause damage to the liver, kidneys, heart and other organs.
3. Lumps easily
During the production process, milk powder goes through a process of spray drying, so the milk powder is easy to keep in a low range. And the air contains a certain amount of water, especially in rainy weather, the water will be larger, if not preserved properly, milk powder is very easy to be affected with moisture, forming clumps.
Because the baby is still small, the gastrointestinal function is weak, so if the milk powder is more than 1 month, it is not allowed to continue to feed the baby. But, a lot of mothers will say, my family milk powder is kept very well, can adults eat it? So let's talk about that.
Adults can eat the rest of the milk powder, mainly depends on whether the milk powder is bad, if there is no bad, of course it can be eaten.
Below, I will teach you the skills to judge whether milk powder is bad:
1. Smell
Believe a lot of parents, the first time after opening the baby's milk powder, will not be able to help but smell, that a light smell of frankincense, it is very good. If the milk powder has gone bad, it will smell sour, fishy, musty, etc., but it just smells very uncomfortable.
2. Look at the silty
Every day to the baby milk powder, mother must have a special understanding of the powder. For example, normal milk powder looks very fine, dry and does not agglomerate, while spoiled milk powder not only tends to agglomerate, but also looks sticky and sticky.
3, after the adjustment to see the situation
Under normal circumstances, the powdered milk will turn into fresh milk. The liquid is milky white and looks very smooth. And after the deterioration of the milk powder, the color will look darker, standing for a few minutes, there will be milk separation phenomenon, and even some granular substances.
Keep in mind that you should not continue to eat any of these foods, including adults. If you feel like throwing away is a bit wasteful, use it to clean leather, repair small cracks, water flowers, etc.
Storage should pay attention to the following points:
1, do not store into the refrigerator, because the refrigerator humidity is larger, milk powder is very easy to be affected with moisture in a few days caking. What's more, there are so many bacteria in the refrigerator that the milk powder can be easily contaminated.
2, must be placed in a cool, dark place, and pay attention to sealing, to prevent the air into. If you have the condition, you can buy a larger airtight bag and put the milk powder bucket into it directly after opening, so that it will last longer.
3, milk powder deterioration, many times are caused by microorganisms, so we must pay attention to health. For example, every time to make milk powder, to keep the table clean, clean hands, and close the lid habit.
One last note: milk powder in barrels and milk powder in bags have different shelf life. Please pay attention to the instructions on the package.
