Cuanto Dura la Leche Materna Después de Descongelarla

Cuánto tiempo dura la leche materna (fuera del frigorífico, nevera o  congelador) - Tua Saúde

Breast milk is invaluable for infant nutrition, offering a myriad of health benefits. However, managing and preserving breast milk can be a concern for many mothers, particularly when it comes to freezing and thawing. In this article, we delve into the topic of how long breast milk lasts after thawing, offering insights into safe practices and important considerations.


Breast milk storage is a crucial aspect of breastfeeding, allowing mothers to provide milk for their babies even when they’re not present. Proper storage helps maintain the nutritional value of breast milk while preventing contamination.

Understanding the Process of Freezing Breast Milk

Freezing breast milk is a common practice to extend its shelf life. The process involves transferring expressed milk into suitable containers and placing them in the freezer. Freezing effectively halts bacterial growth and enzymatic activity, preserving the milk’s nutrients.

Duration of Breast Milk After Thawing

After freezing breast milk, the duration it remains safe for consumption depends on various factors.

Factors Affecting the Duration

Storage Temperature

The temperature at which breast milk is stored after thawing plays a significant role in its longevity. Storing thawed breast milk in the refrigerator maintains its quality for a longer period compared to leaving it at room temperature.

Container Quality

Using high-quality storage containers designed for breast milk can help maintain its freshness. Containers that are specifically designed for freezing breast milk are usually made of materials that minimize the risk of contamination and freezer burn.

Initial Quality of Milk

The quality of breast milk before freezing also affects its shelf life after thawing. Freshly expressed milk that is handled and stored correctly tends to retain its nutritional value and freshness for a longer duration.

Tips for Safely Freezing and Thawing Breast Milk

To ensure the safety and quality of thawed breast milk, it’s essential to follow proper storage and thawing procedures.

Proper Storage Containers

Invest in BPA-free containers specifically designed for storing breast milk. Avoid using regular plastic bags or bottles that may not be suitable for freezing.

Labeling and Dating

Label each container with the date of expression to keep track of freshness. Use the oldest milk first to maintain a consistent rotation.

Thawing Methods

Thaw breast milk gradually by placing it in the refrigerator overnight or under cool running water. Avoid thawing breast milk in the microwave, as it can create hot spots and destroy valuable nutrients.

Signs of Spoiled Breast Milk

It’s crucial to be able to recognize signs of spoiled breast milk to ensure the safety of your baby. Spoiled breast milk may have a sour or rancid smell and unusual consistency or color. If you suspect that breast milk has gone bad, it’s best to discard it.

Frequently Asked Questions (FAQs)

How long does breast milk last after thawing?

The duration of thawed breast milk varies depending on storage conditions but generally ranges from 24 hours in room temperature to up to 48 hours in the refrigerator.

Can I refreeze breast milk after it’s been thawed?

It’s not recommended to refreeze breast milk once it has been thawed, as this can compromise its quality and safety.

Is it safe to heat breast milk in the microwave?

No, microwaving breast milk is not recommended, as it can create uneven heating and destroy valuable nutrients. It’s safer to thaw breast milk using gradual methods such as placing it in the refrigerator or under cool running water.

What are the best practices for storing breast milk in the freezer?

Use BPA-free storage containers designed for freezing breast milk and ensure proper labeling and dating to keep track of freshness. Store breast milk towards the back of the freezer where temperatures are more consistent.

Can I mix freshly expressed breast milk with thawed breast milk?

Yes, you can mix freshly expressed breast milk with thawed breast milk as long as both are at the same temperature. Mix gently to ensure even distribution.


In conclusion, understanding how long breast milk lasts after thawing is essential for ensuring the safety and nutritional quality of milk provided to infants. By following proper storage and thawing procedures, mothers can confidently provide their babies with the benefits of breast milk.

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