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Does breast milk taste different when frozen?

The Taste of Frozen Breast Milk: What to Expect
Breast milk is often hailed as a nutritional powerhouse for infants, but many mothers wonder about the changes it undergoes when frozen and thawed. One of the most common concerns is whether frozen breast milk tastes different compared to fresh milk. The answer is nuanced, as various factors can influence the flavor profile of breast milk after it has been frozen.
Changes in Flavor and Odor
When breast milk is frozen and later thawed, it can develop a slightly sour taste and odor. This change is not universal; some mothers may not notice any significant difference, while others might find the taste altered. A key player in this transformation is the lipase enzyme, which is naturally present in breast milk. When milk is frozen, the lipase can continue to break down fats, leading to a rancid flavor that some describe as sour or even metallic.
Interestingly, this enzymatic activity does not compromise the nutritional quality of the milk. However, it can lead to a peculiar odor that might be off-putting to both mothers and infants. Some mothers report that their thawed milk smells and tastes “funny,” which can be attributed to the lipase’s action on the milk’s fat content .
Factors Influencing Taste
Several factors can affect the taste of frozen breast milk:
1. Storage Duration: The longer breast milk is stored in the freezer, the more pronounced these flavor changes may become. Studies suggest that milk frozen for more than a week may develop a more noticeable rancid flavor.
2. Initial Quality: If a mother experienced issues like mastitis or engorgement during expression, the milk might taste saltier due to higher sodium levels retained in the breast.
3. Personal Sensitivity: Individual sensitivity to flavors can vary widely. Some mothers may find their frozen milk tastes “gross” after thawing, while others may not notice any significant change.
Recommendations for Mothers
For mothers concerned about the taste of their frozen breast milk, there are a few strategies to consider:
– Freshly Expressed Milk: Whenever possible, providing freshly expressed milk can help avoid the taste changes associated with freezing.
– Heat Treatment: Some mothers opt to heat-treat their milk before freezing to deactivate lipase, which can help preserve the original flavor.
– Shorter Freezing Times: Limiting the time breast milk is stored in the freezer can also mitigate flavor changes, with recommendations suggesting that milk should ideally be used within a week of freezing.
In conclusion, while frozen breast milk can taste different due to enzymatic activity and storage conditions, these changes do not affect its nutritional value. Mothers should feel empowered to experiment with their storage methods to find what works best for them and their infants.

Why won’t my baby drink my frozen breast milk?

High lipase in stored milk is to blame!
Babies will often take parents by surprise when they refuse previously frozen milk but drink freshly pumped without an issue.

How do you get the bad taste out of frozen breast milk?

You might try a few drops of non alcoholic vanilla extract in the milk. It worked to cover weird tastes from food I ate and high lipase. If that doesn’t work, you can always use the milk in things like pancakes or purées.

Why does my breast milk taste different after freezing?

As the breastmilk sits in cool temperatures (fridge or freezer), the lipase starts to break down the fat in the milk. The longer it sits, the more you may start to notice the soapy or metallic smell/taste.

Does breast milk change when frozen?

Previously frozen breast milk has similar nutrient and antibody content to fresh milk. It does lose a small amount of those qualities but can still provide a baby with the nutrition it needs. The key is to freeze and thaw breast milk in ways that preserve its nutritional value.

How to make breastmilk sweeter?

You can scald your milk to restore good flavor by gently heating it for a brief period. Certain chemical reactions. Sometimes your milk can smell and taste sour. This can happen very quickly if you have certain additives in your diet — like polyunsaturated and rancid fats or water rich in copper and iron ions.

What are the disadvantages of freezing breast milk?

Deep freezer.
Keep in mind that research suggests that the longer you store breast milk — whether in the refrigerator or in the freezer — the greater the loss of vitamin C in the milk. It’s also important to note that your breast milk changes to meet your baby’s needs.

Does frozen milk taste the same when thawed?

Yes, milk can still taste similar after being frozen and thawed, but there may be slight changes in texture and flavor due to the separation of fats and proteins. It’s common for thawed milk to appear grainy or have a slightly different mouthfeel, but it is still safe to consume.

Does frozen breast milk have a smell when thawed?

Some moms notice that after defrosting, their milk smells unpleasant – soapy or even sour. This is normal!

What are the disadvantages of frozen breast milk?

Some of the immune enhancing properties of breastmilk are decreased over time when milk is frozen. However, the risk of bacterial contamination of milk that has been kept in the refrigerator too long and not frozen, far outweighs the downside of freezing milk.

How to tell if milk has high lipase?

The most notable signs of high lipase milk are changes in taste and smell. You might notice your milk having a scent or taste similar to metallic, vomit, eggs, soap, or fishy. The appearance of the milk might also change, though this isn’t always the case.

Natasha Lunn

Tash is an IBCLC and Business Coach helping fellow IBCLCs create fun, profitable businesses that are more than just an expensive hobby. Before becoming an IBCLC and starting her private practice - The Boobala, Tash graduated as an Osteopath in 2008 and has been in Private Practice in South West Sydney. She was also a volunteer Breastfeeding Counsellor and Community Educator with the Australian Breastfeeding Association for 6 years. Through her business, Your Lactation Biz, Tash coaches and creates products to help new and seasoned IBCLCs build businesses that suit their personality and lifestyle.

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