Women who pump or hand-express milk for their babies know that母乳is like liquid gold. A lot of time and effort goes into getting that milk for your little one. No one wants to see a drop go to waste.

那么，如果柜台上遗忘了一瓶母乳怎么办？母乳在不再安全的婴儿之前可以坐多久？

这是您需要了解的有关正确储存，冷藏和冷冻母乳以及需要扔掉的有关的知识。

Whether you hand-express breast milk or use a pump, you’ll need to store it afterward. Remember to begin with clean hands and use a clean, capped container made of glass or hard plastic free ofBPA.

一些制造商制造了特殊的塑料袋，以收集母乳和储藏室。由于污染的风险，您应该避免使用家用塑料袋或一次性瓶装衬里。

您的储存方法将确定表达母乳安全的时间。正确存储至关重要，因此您可以保留营养含量和抗感染性能。

The ideal scenario is torefrigerate or otherwise chill breast milk表达后立即。

The Centers for Disease Control and Prevention (CDC)Trusted Source 这些股票guidelines for breast milk storage:

  • 新鲜表达的母乳可在77°F（25°C）的室温下静置四个小时。理想情况下，牛奶应放在覆盖的容器中。新鲜牛奶在40°F（4°C）的冰箱中最多可以持续四天。它可以在0°F（-18°C）的冰箱中持续6到12个月。
  • If the milk has been previously frozen, once thawed, it can sit out at room temperature for 1 to 2 hours. If thawed milk is put in the refrigerator, use within 24 hours. Do not re-freeze previously frozen breast milk.
  • If the baby didn’t finish the bottle, discard the milk after 2 hours.

These guidelines are intended for healthy, full-term babies. You should speak to your doctor if you’re pumping milk and your baby has health complications, is hospitalized, or was born prematurely.

在冰箱或冰箱中储存的时间比上面提到的更长的牛奶will lose greater amounts of vitamin C. Also be aware that a woman’s breast milk is tailored to her baby’s needs. In other words, your breast milk changes as your baby grows.

如果使用母乳用于喂食后，您可能会想知道它是否可以用于随后的喂养。牛奶储存指南建议在两个小时后丢弃剩余的母乳，因为您的婴儿嘴可能会受到细菌污染的可能性。

And remember, freshly pumped milk that has been left unrefrigerated for longer than four hours should be thrown away, regardless of whether it’s been used in a feeding or not. Previously frozen milk should be used within 24 hours once thawed and refrigerated. If left on the counter, throw out after 2 hours.

遵循这些储存表达牛奶的最佳实践：

  • Keep track of stored breast milk with clear labels showing the date that the milk was collected. Use labels and ink that are both waterproof and include your baby’s full name if you’ll be storing expressed milk at your baby’s day care.
  • Store expressed milk at the back of the refrigerator or freezer. That’s where the temperature is most consistently at its coldest. An insulated cooler can be used temporarily if you can’t get expressed milk into the fridge or freezer right away.
  • 将牛奶存储在容器或小包中，尺寸较小。母乳不仅在冰箱过程中膨胀，而且还可以帮助减少喂食后扔掉的母乳的数量。
  • 虽然您可以将新鲜表达的牛奶添加到经过冷藏或冷冻的母乳中，但请确保它是同一天。将新鲜牛奶完全冷却（您可以将其放入冰箱或带有冰袋的冷却器中），然后再将其与已经冷藏或冷冻的牛奶结合在一起。

Adding warm breast milk can cause frozen milk to thaw. Most experts don’t recommend re-freezing thawed milk. This can further break down milk components and lead to an increased loss of antimicrobial properties.

It’s best to chill, refrigerate, or freeze breast milk immediately after it’s expressed.

If expressed milk is left out unrefrigerated, but it’s in a clean, covered container, it can sit at room temperature for between four and six hours. Milk that has been left out for longer should be thrown away.

If you’re in doubt about how long expressed breast milk has been left out, err on the side of caution and toss it. It can be difficult to throw away expressed breast milk (all that hard work!) but remember: Your baby’s health is the most important thing.