Nitrogen constituents

The sotrace elements, such as boron, cobalt, iron,copper, zinc, manganese, chromium, molybdenum and still others may also be used to advantage. Generally, these trace elements occur in sufficient quantities in the carbonaceous and nitrogenous constituents of the medium, particularly if derived from natural sources, or in the tap water, and the addition of further quantities of these trace elements may consequently be unnecessary. 

Media for fungi. Most fungi encountered as contaminants in pharmaceutical products will grow on media similar to that used to grow bacteria. Growth is favoured, however, if the proportion of carbohydrate is increased in relation to that of nitrogenous constituents. 

The products of incomplete combustion may be associated with particulate matter before their discharge into the atmosphere, and these may ultimately enter the aquatic and terrestrial environments in the form of precipitation and dry deposition. It is therefore essential to ensure total destruction of the contaminants, generally by raising the temperature. The spectrum of compounds that have been examined is quite extensive, and several of them are produced by reactions between hydrocarbons and inorganic sulfur or nitrogen constituents of air. Some illustrative examples involving other types of reaction include the following ... 

The two most important bile acids, cholic acid C24H40Os and desoxy-cholic acid C24H40O4, occur in ox bile in combination, partly with glycine and partly with taurine as glyco- and taurocholic and glyco- and tauro-desoxycholic acids. The linkage between the amino acids and the bile acids is of an amide nature. On hydrolysis the nitrogenous constituents are split off. 

This amino acid was first obtained by F. Ehrlich in 1903 from the nitrogenous constituents of beet-sugar molasses, and was subsequently isolated by him from the decomposition products of fibrin and other proteins. Like leucine, to which it is very similar in properties, it thus appears to be a widely distributed constituent of the protein molecule. 

Matsunaga, T., K. Watanabe, I. Yamamoto and H. Yoshimura. Analyses of nitrogenous constituents in Cannabis sativa L. Hochudoku 1991 9(2) 122-123. 

Nassar, A. G., Mubarak, A. E., and El-Beltagy, A. E. (2008). Nutritional potential and functional properties of tempe produced from mixture of different legumes. 1 Chemical composition and nitrogenous constituent. Int. J. Food Sci. Technol. 43,1754-1758. 

Vegetal and animal matters, and animal excreta, when in the soil, undergo putrefaction and slow oxidation. 1 The nitrogen of their nitrogenized constituents is changed in the process of putrefaction and decay into ammonia, and a small part into nitric acid, which is the product of the oxidation or decay of ammonia. There is every reason to believe that nitric acid can replace ammonia, as a source of nitrogen to plants. In animal manures, therefore, not only are plants supplied with the mineral substances which the soil must yield, hut they are also supplied with those parts of their food which the plant obtains from the atmosphere. The latter supply Is a clear addition to that which the air at all times affords. 

Seme years ago a method was patented by,Mr. Micuiel for extracting the sugar from cane without the nsa of the mill it was proposed to cut the canes into thin slices and treat them with lime water. The ooject of this was to render the nitrogenous constituents of the... 

Schwartz, D. P. and Pallansch, M. J. 1962A. Identification of some nitrogenous constituents of cow s milk by ion exchange and paper chromatrography. J. Ag. Food Chem. 

The results showed that seven nitrogenous constituents, glycine, alanine, glutamic acid, arginine, AMP, GMP, and CMP, and four inorganic ions, Na+, K+, Cl-, and P0 , contribute more or less to produce the taste of crab. The opinions of the panelists regarding the taste of the test solutions are summarized as follows. 

Pollard, J. K. and Sproston, T. (1954). Nitrogenous constituents of sap exuded from the sapwood of Acer saccharum. Plant Physiol. 29, 360-364. 

Creatinine is an important nitrogenous constituent of urine. It is formed nonenzymatically from phosphocreatine primarily in muscle by spontaneous cyclization, resulting from phos-phorolysis. 

The properties displayed by a starch triacetate, or by other starch esters are dependent upon the type and molecular weight of the starch or starch fraction used for the esterification. The properties may also be influenced by trace constituents or impurities such as compounds of nitrogen and phosphorus which are often observed in starch esters. While the nature of the nitrogenous constituent is not known, it has been demonstrated that much of the phosphorus of potato starch exists as a natural phosphoric ester of the amylopectin fraction. It is not surprising, therefore, that the phosphorus of potato starch is carried through an esterification and may influence the properties of the starch ester. The exact modifying effects of these components on the properties of starch esters, however, are still to be explained. 

Bremner, J. M. (1968). The nitrogenous constituents of soil organic matter and their role in soil fertility. Pontif. Accad. Sci. Scripta Varia 32, 143-193. 

For bacterial polysaccharides removal of the last traces of nitrogen by denaturation is frequently very difficult, and may involve degradation of the polysaccharide. The exact nature of this nitrogenous constituent is not clear. It may arise from the nucleoprotein of the enzymes responsible for polysaccharide synthesis. Short chains of D-glucose residues may be joined progressively by the enzymic nucleoprotein to form the macromolecular bacterial polysaccharide. However, there are indications that this small amount of nitrogen may not be responsible for the immunological reactions of the polysaccharide. 

B25. Bollman, J. L., and Mann, F. C., Nitrogenous constituents of blood following transplantation of ureters into different levels of intestine. Proc. Soc. Exp. Biol. Med. 24, 923-924 (1927). 

Willcock, E. G. and Hopkins, F. G., The importance of individual amino acids in metabolism. Observations on the effect of adding tryptophane to a diet in which zein is the sole nitrogenous constituent, /. Physiol., 35, 88, 1906. 

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