WHY FREEZE-DRY MY MILK?
Freezing is the current standard for long-term storage of breast milk. However, freezing breast milk results in a rapid decrease in quality of the milk. Some important and significant decreases in quality have been observed even after only a few hours to one week in the freezer!
Recent research has shown that freeze-drying breast milk is a safe and more effective way of preserving the nutritional, immunological, and probiotic properties of breast milk that make it the gold standard of nutrition.
HOW BREAST MILK CHANGES DURING
Freezer storage has been shown in several recent studies to cause a significant decline in the fat and caloric content of breast milk. In addition, protein content of breast milk may be modified by the freeze-thaw cycle.
Concentrations of Vitamins E and C decreased with freezer storage over time.
Lipase enzymes remain fully active during frozen storage of human milk. High levels of lipase make the fats in your milk break down more quickly, impacting the flavor and smell.
Antioxidants in breast milk help prevent damage to important cellular components caused by reactive oxygen species. Frozen breast milk was shown to have significantly decreased antioxidant activity.
Antibodies such as IgA, IgM, and IgG, and other bioactive immune factors (such as IL-8, TGF-β, and IL-10) degrade over time in the freezer, and concentrations in breast milk are significantly reduced after extended freezer storage.
Probiotics in your breast milk (such as Lactobacillus and Bifidobacterium) are important for establishing your infant's initial gut microbiota. Probiotics do not survive extended freezer storage, and even one freeze/thaw significantly decreases their viability.
"Effect of Freezing Time on Macronutrients and Energy Content of Breastmilk". Garcia-Lara et. al. (2012) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3411345/
"Effects of cooling and freezing storage on the stability of bioactive factors in human colostrum". Ramirez-Santana et. al. (2012) https://www.journalofdairyscience.org/article/S0022-0302(12)00199-3/pdf
"Effect of storage on breast milk antioxidant activity". Hanna et. al. (2004) https://fn.bmj.com/content/fetalneonatal/89/6/F518.full.pdf
"Human Milk Composition: Nutrients and Bioactive Factors". Ballard and Morrow. (2013). https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3586783/pdf/nihms-413874.pdf