Development of salivary alpha-amylase in infants from birth to 5 months.
The alpha-amylase activity in whole saliva of two groups of infants was investigated from birth to 5 months at monthly intervals. Foods used in infant feeding as well as height and weight were recorded at each monthly collection period. alpha-Amylase activity was found to increase rapidly from low values at birth to approximately two-thirds of adult values by 3 months. Large variation in alpha-amylase activity, either per ml of saliva or per mg of protein, was recorded. No significant relationships of alpha-amylase activity with weight, weight for height, growth rate, or presence of starch-containing foods in the diet were found. Introduction of starch-containing food before 3 months of age would likely lead to inadequate hydrolization of starch in some infants.
D000375:Aging; D001835:Body Weight; D004040:Dietary Carbohydrates / Q000008:administration & dosage; D006128:Growth; D006801:Humans; D007223:Infant; D007225:Infant Food; D007231:Infant, Newborn; D012463:Saliva / Q000201:enzymology*; D013213:Starch / Q000008:administration & dosage; D000516:alpha-Amylases / Q000378:metabolism*
D004040:Dietary Carbohydrates; D013213:Starch; D000516:alpha-Amylases