The Freeze-Dry Process:

Our freeze-drying process works by a process called sublimation, in which the water contents are removed from frozen breast milk by converting from a solid (ice) to a gas (water vapor). Freeze-drying preserves the structure of molecules in the milk, which impacts the taste and nutritional quality of the milk. The result after freeze-drying is a fine breast milk powder, which has all of the original components of the breast milk without the water. This process is very different than standard “dehydrating” techniques, which use high temperatures to remove water which cause damage to the nutritional properties of the milk.

 

How it works:

FREEZE: The breast milk you provide is frozen at a very low temperature (below -40 degrees).

VACUUM: The freeze-drying chamber is then placed under a deep vacuum.

DRY: A small amount of heat is then added, and since the pressure is so low, the ice turns directly into water vapor and is removed from the frozen milk. 

SEAL:  The powder is then sealed in a high barrier bag to protect it from moisture, oxygen, UV, and contamination.

GENTLE DRY

Delicate heating causes the ice crystals (solid) in the milk to turn into water vapor (gas). In the vacuum chamber, the water vapor is extracted from the milk, leaving behind all the components of the breast milk into a powder form. This process can take up to two days to complete.

ULTRA LOW FREEZE

Your frozen breast milk is placed inside a chamber that is cooled to a very low temperature (-40 degrees).

DEEP VACUUM

The air in the chamber is removed via pump, bringing the environment inside the freeze-dryer to a deep vacuum.

DOES FREEZE-DRYING SAVE THE NUTRIENTS IN MY BREAST MILK?

NUTRIENTS

The overall caloric density of breast milk is not altered by freeze-drying, and in addition, proteins, fats, and carbohydrates (including human milk oligosaccharides) were found to be protected by freeze-drying.

IMMUNE FACTORS

Breast milk contains a complex mix of immune factors that help provide protection from infection. Antibodies, cytokines, growth factors, and other bioactive factors in breast milk are important forms of protection while the infant’s own immune system is maturing.

ANTIOXIDANTS/VITAMINS

Antioxidants in breast milk help prevent damage to important cellular components caused by reactive oxygen species. Vitamins and minerals are micronutrients that are also important for development and functioning of various organ systems.

PROBIOTICS & PREBIOTICS

Human breast milk is a living food! Probiotic bacteria in your breast milk (such as Lactobacillus and Bifidobacterium) are important for establishing your infant’s initial gut microbiota. Human milk oligosaccharides (HMOs) are important prebiotics for these bacteria, as they provide the food that these bacteria use to grow and multiply.

NUTRIENT PRESERVATION

Below is a summary of some of the research highlights regarding how freeze-drying affects the important components of breast milk