By S. M. Manskaya, T. V. Drozdova, Dean Earl Ingerson
Geochemistry of natural components, quantity 28 correlates rules in regards to the composition and transformation of decomposition items of organisms in usual strategies with phenomena of migration and the focus of chemical parts through natural components in sedimentary rocks. This ebook provides theories in regards to the chemical constitution of average compounds that paintings as progenitors for the formation of naturally-occurring natural elements.
Organized into components encompassing 12 chapters, this quantity starts off with an outline of the biosynthesis and the metabolism of natural ingredients that represent the intermediate compounds. this article then examines the formation of fossil components, which happens in numerous levels and is determined by a number of components. different chapters reflect on the function of the natural ingredients of coal within the geochemical cycle of carbon. This publication discusses to boot the composition and distribution of the natural elements in water and sediments of basins of assorted forms. the ultimate bankruptcy offers with the numerous position of fossil natural subject at numerous levels of its formation.
This publication is a invaluable source for botanists, geochemists, paleobiochemists, and coal chemists.
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Additional resources for Geochemistry of Organic Substances
Hydroxyconiferyl alcohol) Earlier, Manskaya (1949, 1957) had presented a scheme for lignification of plant walls as an enzymic oxidation of coniferyl alcohol. -glucosidase to release the coniferyl alcohol. N. -hydroxyconiferyl alcohol, which then polymerizes to form lignin. Theories concerning the enzymic formation of lignin from coniferyl alcohol have been supported by later investigators (Freudenberg, 1959; Higuchi, 1957b). The role of coniferyl alcohol in lignification has been demonstrated in experiments with cultured tissue (Siegel, 1955, 1956; Gautheret et al, 1958; Bardinskaya, 1960, 1961).
16 MINERALIZED ORGANIC SUBSTANCES A N D THEIR FORMATION H—C—OH H—C—NHCOCH 3 C h i t i n + ( H 20 ) n = n HO—C—H Ο H—C—OH H—C Ν - acetylglucosamine Investigations of recent years have shown that the enzyme chitinase occurs in the tissues of many plants, animals, and bacteria (Kopp and Markianovich, 1950; Tracey, 1955; Gehring, 1955; Drozdova, 1957a; Jeuniaux, 1958, 1959). The absence of large accumulations of fossil chitin, as well as the occurrence in the majority of organisms of chitinase sufficiently active to be capable of decomposing chitin, are indications that chitin does not remain unchanged in natural processes.
Acid solutions of fulvic acid obtained after precipitation of humic acids are separated into fractions on a column of activated charcoal, which is then eluted with different solvents. This method, proposed by Forsyth (1947), was used by Dragunov (1951) during an investigation of fulvic acid from different soils and by Schlichting (1953) during an investigation of soil humus. In a fulvic acid fraction, Forsyth found fulvic acids, phenolic glucosides, polysaccharides, and simple carbohydrates. Using Forsyth's method and subsequently purifying the individual fractions on cationite SBS, Drozdova (1955) was able to isolate from fulvic acid a fraction having a quinoid character, a molecular weight of 190, and a melting point of 121-122°, and containing no nitrogen.
Geochemistry of Organic Substances by S. M. Manskaya, T. V. Drozdova, Dean Earl Ingerson