Osmolalities of infant formulas

Area of Science:

• Pediatrics
• Neonatology
• Infant Nutrition

Background:

• Infant formulas are a common alternative to breast milk.
• The osmolality of infant feeding products can impact infant health.
• Preterm infants may have specific sensitivities to formula osmolality.

Purpose of the Study:

• To determine the osmolality of breast milk and various infant feeding products.
• To compare the osmolalities of different types of infant formulas.
• To highlight the importance of osmolality in formula selection for vulnerable infants.

Main Methods:

• Freezing-point depression method used for osmolality determination.
• Analysis included breast milk and 36 commercial infant products.
• Comparison of osmolalities based on formula type and preparation method.

Main Results:

• Significant variation in osmolality observed among infant formulas.
• Many formulas providing 67 kcal/100 ml had osmolalities exceeding 400 mOsm/kg.
• Reconstituted powdered formulas showed batch-to-batch variability and higher osmolality than ready-to-feed or manufacturer-formulated products.

Conclusions:

• Infant formula osmolality is highly variable and requires careful consideration.
• Product osmolality is a critical factor in selecting appropriate nutrition for infants.
• Particular attention to osmolality is necessary when choosing formulas for preterm infants.