Zur Bestimmung der biologischen Wertigkeit von Nahrungsproteinen, XI. Die Wirkung von Methionin auf den Stickstoffbedarf

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Abstract
Long term dietary experiments were out on humans with mixtures of egg protein with ammonium citrateand methionine. Up to 2/3 of the egg protein can be replaced by NH3 without a noticeable change in the N requirement (4.83 g/day). The N-requirement increases only after higher dilutions. With a mixture of 17% egg-N 83% NH3-N the N-requirement was 8.11 g/day. The minimal N-requlrement of the above mixture is markedly reduced by the addition of methionine. With the addition of 8.12 g of methlonine/day the N-requirement of the same person was 5.65 g/day. This excessive dosls of methionine did not cause an imbalance.