By Anthony A. Albanese
Advent and views; a few species and age adjustments in amino acid requisites; Individuality of amino acid wishes; usage of d-amino acids; The potency of usage of nutritional proteins; nutritional proteins and synthesis of tissue proteins; meals power and the metabolism of nitrogen; An built-in crucial amino acid index for predicting the organic price of proteins; standards of protein food; The amino acid standards of animals; Amino acid supplementation of meals and feeds.
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The required amount for each amino acid in each case is then taken as the smallest amount in the list. The requirements thus obtained are summarized in Table VIII. 4 The requirements for adult man are listed side by side with those recently proclaimed by Rose (1957). The two may not be comparable, first, because of the indirect method of estimation used to secure the values given in column 3 of the table, and, second, because Rose's values, although described as "minimum daily requirements," are not averages of the 3 to 6 individual determinations for the different amino acids, and hence are not the most probable requirements for any given indi4 Essentially the same method was used by Harte, R.
The latter alternative in the quotation is not inconsistent with the later work of Wissler and associates (1948) in Cannon's laboratory. Contrast with these experiments of Mitchell (1947) and especially the earlier ones by Osborne and Mendel cited by Mitchell, the one reported by Bricker et al. (1945), in which on a white-flour diet, an adult college woman was in marked negative nitrogen balance. 5 times the nitrogen contained in the added lysine, and her nitrogen balance became positive. The need for lysine by the adult human had been previously shown by Rose (1944) and by Albanese and co-workers (1941).
WOOL GROWTH The persistence of keratin synthesis in animals under conditions of undernutrition is strikingly illustrated by experiments reported from the University of Illinois on wool growth in sheep. In experiments designed to measure the relative net energy value of alfalfa, clover, and timothy hay for the maintenance of sheep, the consumption of hay was limited by the consumption of the least palatable one, namely, timothy hay. , 1928c). 6% of their protein, although they were in continuously negative nitrogen balance.