Evaluation of human milk titratable acidity before and after addition of a nutritional supplement for preterm newborns.

Objective: To evaluate the initial Dornic acidity in raw human milk, after pasteurization and after heating and dilution of a dietary supplement for preterm infants.

Methods: A quantitative, descriptive, and experimental study was carried out with a convenience sample at the human milk bank at a Brazilian public maternity, with specialized care for pregnant women and newborns at risk. The eligibility criteria for the study sample included 93 frozen raw human milk in suitable containers with volumes ≥100mL and initial Dornic acidity ≤8° Dornic (°D).