Effect of heterophase admixtures on thermal decomposition of silver nitrite

Abstract

The qualitative composition and quantitative relationships of amines in the volatile components of 6-, 24-, and 30-h cultures of a strain of Streptococcus lactis, in the logarithmic growth phase, was studied chromatographically using retention indices.The 21 amines found were identified as follows: primary amines—methylamine, ethylamine, isopropylamine, butylamine, isobutylamine, tert.-butylamine, amylamine, isoamylamine; secondary amines—dimethylamine, diethylamine, dipropylamine, diisopropylamine, diisobutylamine, n-butylisopropylamine, pyrrolidine, piperidine; tertiary amines—trimethylamine, triethylamine, tripropylamine. The qualitative composition of amines remained constant as the culture grew, but a sharp change in the quantities of the individual amines in the 6-, 24-, and 30-h cultures was observed. This pointed to the formation of amines during the metabolism of the bacterial cells and suggested the existence of special fermentative systems involved in the synthetic production of amines. Thus a fundamentally new phenomenon that of synthesis of secondary and tertiary amines by microorganisms has been discovered.