What are the nutritional values of frozen breast milk, and what are the differences in nutrition whe

Breast milk is known to not only contain nutrients that are easy for newborn babies to digest, but also rich in active ingredients. The nutritional composition of breast milk mainly includes: protein and amino acids, which are key nutrients required for the physical growth and brain development of newborns; carbohydrates that are mainly lactose-based; fat, which provides the main energy for newborns; In addition to vitamins D and K, various vitamins and minerals are also immunoactive ingredients that cannot be reached by cow's milk.

Various studies on the changes in the nutrient composition of breast milk after preservation at home and abroad have been carried out under three conditions: 4 degrees, -20 degrees, and -80 degrees1,2,3. The composition of breast milk changes differently after it is stored for a long time at -80 degrees and -20 degrees Celsius, but the freezing temperature of our common household refrigerator is -18 degrees Celsius, so let's discuss the situation when breast milk is stored at about -20 degrees.

Some studies suggest that the composition of protein, fat, carbohydrates, etc., in breast milk after cryopreservation4,5. Studies have also found that after 90 days of freezing breast milk, fat, protein and calories are reduced6. The immunoactive components in breast milk are good for fighting infections, but their levels decrease significantly after cryopreservation, and the lower the temperature and the longer the storage time, the further the content decreases.

White blood cells, for example, have the effect of phagocytosing pathogens and secreting immune factors, and the content of this component will drop to less than 30% of the original content of breast milk after it is frozen and stored5. But there are also studies that show that some cytokines, IgA and growth factors in colostrum, can be stable for at least 6 months at -18 degrees7. In addition, vitamin C in breast milk has the effect of antioxidant and anti-inflammatory reaction8, and the content of vitamin C will also decrease significantly in long-term frozen preservation, so if a baby is breastfed after freezing for a long time and does not have the mother's fresh breast milk, it should be considered to add vitamin C appropriately, and the vitamin C content of fresh breast milk is very rich.

The effects of frozen breast milk on other vitamins and minerals have been poorly studied.

In any case, the fresher breast milk is always better, which reminds mothers to try to let their children eat fresh breast milk when they are around them, and if they need to store milk because they need to go to work, even if it is safe to keep frozen milk for 3-6 months, use it as soon as possible.

So, friend's question, the answer is clear:

Although there are some subtle changes in the composition of breast milk after freezing, it certainly does not remain in vain.

Even after freezing, the active ingredient in breast milk is still incomparable to formula milk, and eating frozen breast milk is no different in digestion and absorption than eating fresh breast milk, and it is more economical than formula milk.

So moms can rest assured that they are stocking. However, in order to preserve the nutrients of breast milk, the premise is that the method of storing breast milk and the method of thawing and warming breast milk are correct.

The nutrition of breast milk will deteriorate, and breast milk will also have certain problems, which is very bad for the child's stomach, so parents try not to choose such breast milk to feed their children, and the nutrition will also be lost, which will cause a lot of harm to the child, the content of nutrition is not the same, and the energy that can be supplemented to the child is not the same.

At this time, breast milk is easy to deteriorate, and the child will have some bad stomach and intestines when he eats it at this time, and the nutritional value is also different, which will also cause a certain impact, and the nutritional value will be very different, and there will be a lot of problems.

The nutrient content of frozen breast milk may be reduced slightly, and some components such as vitamin C will be lost, but the main components such as protein, carbohydrates, immune components, water, and fat-soluble vitamins will not be affected. Therefore, it is possible to freeze breast milk every day and give it to your baby, but it is also possible to use formula.

Frozen breast milk loses nutrients, decreases in fat and protein, and increases acidity, but it is still nutritious.

Keep it fresh, and if you can eat it frozen, it's a popsicle.

Freshly expressed breast milk is packed in a clean bottle at room temperature (below 26 degrees) for 6-8 hours, preferably in the refrigerator if available; refrigerator (below or equal to 4 degrees) for 3-5 days. Stored in the coldest innermost part of the refrigerator; The freezer compartment without a separate door is frozen for 2 weeks, the freezer with a separate freezer is frozen for 3 months, and the freezer is below -18 degrees for 6-12 months. Frozen breast milk should be thawed as soon as possible, first rinsed with cold water, slowly turned hot until thawed, and then hot water bath to room temperature (the temperature of complementary food is preferred).

Do not reheat too much, so don't heat too much each time; thaw but do not put it in the refrigerator within 4 hours; Do not repeat freezing.

In addition, after the milk bottle has been left for a long time, the separation of fat and water may occur. In fact, it's quite common. However, the mother should not shake it vigorously, as milk that has been left out for a long time will stir abnormally and the structure of the protective protein will be damaged.

So don't get too excited. Frozen or frozen breast milk must be heated in hot water. According to the study, heating milk with a micro-gear will cause irregular heating, killing harmful bacteria in the milk, but also killing some of the antiviral factors in the milk.

Therefore, microwave heating is not recommended.

<> breast milk is the best nutrition for babies**. Whenever possible, doctors and some people will recommend that you breastfeed. While breastfeeding is a natural thing to do, it doesn't go very well.

During breastfeeding, there are usually some hiccups that will overwhelm new mothers. For example, some BMWs have less milk or even meet the needs of their children, while some BMWs have more milk. After feeding the children, they have to squeeze them out and put them into bottles.

The next time you feed your child, the packaged breast milk should be relatively stable. Therefore, in order to keep it fresh, breast milk packaged in a bottle must be refrigerated.

Who knows, after she went to work, her mother-in-law secretly threw away these frozen milk and let the baby drink milk powder. Bao's mother was very angry when she found out. As a result, his mother-in-law said:

Ponmo's milk was frozen in ice. If the baby has a bad stomach, I used my money to buy him powdered milk. There is no need to take care of it.

Then you can squeeze the milk and freeze it. The last option is frozen milk. It's okay to let the baby eat milk after a short period of freezing.

If the temperature inside the freezer is kept at -18-"84451;"Below, may be frozen for four months. Long-term freezing can lead to nutrient loss. In principle, breast milk should not be refrigerated, let alone frozen.

Letting your baby eat fresh breast milk is the happiest, most hygienic, and most prudent and nutritious for your baby