Serum phenylalanine in preterm newborns fed different diets of human milk.

Objective: To evaluate phenylalanine plasma profile in preterm newborns fed different human milk diets.

Methods: Twenty-four very-low weight preterm newborns were distributed randomly in three groups with different feeding types: Group I: banked human milk plus 5% commercial fortifier with bovine protein, Group II: banked human milk plus evaporated fortifier derived from modified human milk, Group III: banked human milk plus lyophilized fortifier derived from modified human milk. The newborns received the group diet when full diet was attained at 15 ± 2 days.