Proteolytic Enzymes in Human and Cow's Milk

Results obtained from feeding infants enzyme-treated milk suggest that the superiority of such milks may be associated with the added enzyme rather than with any physical or chemical changes in the milk proteins. Tests were made to determine the possible presence of the enzyme in treated cow's milk after pasteurization, and in human milk. The results provide a new concept in infant nutrition. Editor. The production of low curd-tension milk by modification with pancreatic enzymes was first proposed by Conquest et al. (4) in 1938. Later, a considerable amount of clinical investigation on such a product was reported by Blatt et al. (3) and Steigmann and Blatt They showed that excellent results were obtained in infant nutrition with this modified milk and suggested its use in other situations where intolerance to cow's milk might be encountered. Blatt recommended the use of this milk unboiled, either diluted or undiluted, for the feeding of infants. Hess and Lundeen (6) at Michael Reese Hospital confirmed Blatt's work, obtaining good results when feeding unboiled Enzylac ~ to premature, as well as newborn, infants.