Experience with a flavor in mother's milk modifies the infant's acceptanceof flavored cereal

The present series of studies aimed to investigate whether experience with a flavor in mothers' milk modifies the infants' acceptance of similarly fla vored foods at weaning. First, we established, using methods developed in o ur laboratory, that the ingestion of carrot juice by lactating women produc ed a sensory change in their milk approximately 2 to 3 hr after the ingesti on of the beverage. Second, we randomly formed two groups of breast-fed inf ants who had been fed cereal for a few weeks but had only experienced cerea l prepared with water. Their mothers were asked to consume one of two types of beverages (i.e., carrot juice, water) during the exposure period. Each mother was observed feeding her infant cereal during four test sessions. Th e first two sessions occurred during the 2 days before the exposure period; in counterbalanced order, infants were fed cereal prepared with water on I testing day and cereal prepared with carrot juice on the other. These two test sessions were then repeated following the exposure period. The results demonstrated that the infants who had exposure to the flavor of carrots in their mothers' milk during the exposure period consumed less of the carrot -flavored cereal and spent less time feeding when compared to the control i nfants whose mothers consumed the water. This may be a form of sensory-spec ific satiety such that the infants become less responsive to a flavor that they have been extensively exposed to in the very recent past. (C) 1999 Joh n Wiley & Sons, Inc.