[Change in the blood serum amino acid spectrum in workers engaged in the manufacture of acrylonitrile and the ways for its correction via nutrition].

A group of 100 workers employed in acrylonitrile production were examined. The blood serum showed a decreased content of free sulfur-containing, mostly indispensable amino acids, free sulfhydryl groups and diminution of the activity of blood enzymes. On the basis of the data obtained a diet has been developed which includes foodstuffs rich in amino acids. After 24 days on this diet the workers were examined at the prophylactorium of the chemical works. The diet was shown to exert a favourable effect on the content of free amino acids and activity of serum enzymes.