The absorption and retention of nitrogen from leaf protein by infants recovering from malnutrition
British Journal of Nutrition
In underdeveloped countries no source of protein can be neglected that is likely to be useful as human food. Duckworth and his colleagues have shown that leaf protein (LP) prepared by the method of Morrison & Pirie (1961) has good nutritive value for chicks, rats and pigs Duckworth, Hepburn & Woodham, 1961) . These results were encouraging enough to justify trials on human subjects. Balance studies were therefore made on Jamaican infants recovering from malnutrition. T o give LP as the sole
... LP as the sole source of nitrogen would not be realistic; it is more likely to be useful as one component of a vegetable protein supplement. In Jamaica the most readily available sources of protein, apart from green leaves, are legumes and coconuts. As a first step, however, LP was given in combination with milk protein. Dietary histories and surveys show that many Jamaican infants aged about I year receive an amount of protein from milk which, though inadequate, is not negligible-of the order of 0-5 g/kg body-weight daily. The practical question therefore seemed to be: can leaf protein be used as a supplement to marginal quantities of milk? T o answer it, mixtures were given providing daily 3-5 g protein/kg body-weight, in which one-half to twothirds of the nitrogen was derived from LP and the remainder from milk.