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carbohydrate content

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Journal Article
Published: 01 March 1967
Journal of Sedimentary Research (1967) 37 (1): 12–24.
...F. M. Swain; M. A. Rogers; R. D. Evans; R. W. Wolfe Abstract The carbohydrate content of 38 fossil specimens linens analyzed by a phenol-sulfuric acid method ranged from 4 to 900 ppm. The rock matrix associated with the fossils contained carbohydrates in the range 15 to 660 ppm. Absorption spectra...
Journal Article
Journal: AAPG Bulletin
Published: 01 November 1940
AAPG Bulletin (1940) 24 (11): 1865–1890.
... the so-called saccharinic acid composition ( Tables VI and VII ). The carbon content of these carbohydrates rises from 40 or 44 per cent to about 70 per cent which we find in cellulose humic acids which are intermediary products in the formation of the protoproduct with about 76-80 per cent carbon...
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Journal Article
Published: 01 September 2002
Environmental Geosciences (2002) 9 (3): 115–126.
... acid carbon and nitrogen contents, and low δ 15 N values, the latter in Mansar lake, suggest terrigenous organic matter higher in lignin or carbohydrate contents and biodegradation in bottom sediments. The higher δ 15 N values in Surinsar lake indicates more autochthonous contribution of organic...
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Series: AAPG Special Publication
Published: 01 January 1934
DOI: 10.1306/SV6334C3
EISBN: 9781629812564
... and lignin-humus compounds. Pigments, waxes, and carbohydrates are present in very small quantities, and oils and fats occur in insignificant amounts. The changes that occur in the organic content of sediments during and after diagenesis are : the partial destruction of the nitrogenous compounds...
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1963
AAPG Bulletin (1963) 47 (5): 777–803.
...Frederick M. Swain ABSTRACT Examination of some residual organic substances in Upper Jurassic rocks has shown several relationships between rock types and organic constituents. The organic carbon and nitrogen content as well as the residual amino acids and carbohydrates of these samples were...
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Series: SEPM Special Publication
Published: 01 January 1955
DOI: 10.2110/pec.55.04.0428
EISBN: 9781565762053
... and easily decomposable compounds—such as carbohydrates and simple proteins—and the formation of resistant residues rich in lignins. The organic content of sediments in the open ocean is much less than near shore. The average quantity in deposits far from land is less than 1 per cent, whereas near shore...
Journal Article
Published: 01 July 2009
Russ. Geol. Geophys. (2009) 50 (7): 638–643.
...D.A. Bushnev; N.S. Burdel’naya Abstract The available data on the composition of the pyrolysis products of kerogen from the Mesozoic carbonaceous strata of the Russian Plate evidence that changes in the contents of total organic carbon (TOC) lead to a regular change of the mechanisms of organic...
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Journal Article
Published: 01 February 2008
Mineralogical Magazine (2008) 72 (1): 85–89.
... and other physical forces which, in concert, chemically and physically alter minerals. In unsaturated soil environments, plant roots normally form symbiotic mycorrhizal associations with fungi. The plants provide photosynthate-carbohydrate-energy to the fungi in return for nutrients absorbed from the soil...
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Journal Article
Published: 01 July 2014
Vadose Zone Journal (2014) 13 (7): vzj2013.08.0155.
... to high carbohydrate content and/or high N content ( Marschner and Kalbitz, 2003 ). However, part of both N-containing compounds and carbohydrates are bound to refractory lignin-derived compounds and are thus released and degraded slowly ( Guggenberger et al., 1994 ; Fioretto et al., 2005 ). In general...
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Journal Article
Journal: AAPG Bulletin
Published: 01 December 1958
AAPG Bulletin (1958) 42 (12): 2858–2891.
... and depressional sapropelic petra are relatively more favorable for hydrocarbon preservation than some of the other types. Free sulphur is found in many of the Newton Hamilton and Marcellus samples but is less common in the overlying Mahantango. The sulphur-bearing layers, also characterized by increased content...
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Journal Article
Published: 01 April 2012
American Mineralogist (2012) 97 (4): 556–567.
... and crystallization. In marine sediments, the accumulated dissolved carbohydrates produced from organic matter degradation during early diagenesis may also serve as catalysts for disordered dolomite formation. * E-mail: hfxu@geology.wisc.edu Manuscript handled by Hongwu Xu 18 8 2011 22 12...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1958
AAPG Bulletin (1958) 42 (1): 173–189.
.... The resulting values, if not taken too literally, suggest in a general way a high protein content of the probably planktonic source organisms of the Cuyuna and Rove, and a carbohydrate-rich source for the Thomson. The peridinean dinoflagellates contain much cellulose in their cell walls and possibly furnished...
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Journal Article
Published: 02 December 2022
Geological Magazine (2023) 160 (3): 579–600.
..., sulfurization of carbohydrates was the dominant control on organic matter preservation. This climate-controlled process that drives organic matter enrichment in the Tithonian can be recognized on a basin-wide scale. Author for correspondence: B. van de Schootbrugge, Email: B.vanderSchootbrugge@uu.nl...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1961
AAPG Bulletin (1961) 45 (10): 1713–1720.
... was collected and an aliquot was scanned in the ultraviolet range in a Beckman DU spectrophotometer. Many of the resulting absorption spectrograms showed absorption peaks in the range of furfural or 5-hydroxymethylfurfural which are believed to have been derived from carbohydrates in the rock. The amino...
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Journal Article
Published: 01 February 2006
Clays and Clay Minerals (2006) 54 (1): 38–44.
... pathway leading to the formation of new humic materials in soils. * E-mail address of corresponding author: javier.gonzalez@ars.usda.gov 23 07 2004 16 09 2005 © 2006, The Clay Minerals Society 2006 Abiotic Transformation Carbohydrates Catalysis Furfural Compounds Glucose...
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Journal Article
Published: 01 August 2014
European Journal of Mineralogy (2014) 26 (4): 537–552.
...Ashit RAO; John K. Berg; Matthias Kellermeier; Denis Gebauer Abstract The present study aims to elucidate the effects of different carbohydrates on the early stages of calcium carbonate mineralization by following a systematic potentiometric titration-based approach. Distinct mono-, oligo...
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Journal Article
Published: 01 April 2009
Russ. Geol. Geophys. (2009) 50 (4): 299–307.
... to the atmosphere and land are still poorly estimated ( Romankevich et al., 2008 ). Living OM produced on land and in ocean differs in the contents of ash (5 and 44%, respectively), proteins (5 and 62%), carbohydrates (62 and 25%), lipids (6 and 13%), and lignin (27% and traces) ( Table 1 ). Autochthonous...
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Journal Article
Published: 11 February 2021
Geochemistry: Exploration, Environment, Analysis (2021) 21 (1): geochem2020-052.
... in pristine peat ( Ringqvist and Öborn 2002 ). The contents of poorly hydrolyzable carbohydrates in peat depend on the presence of cellulose from dead higher plants ( Lishtvan et al. 1989 ; Martynova 2011 ). In the Ursk samples, they are lower than in the reference sedge peat but higher than in the sedge...
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Journal Article
Journal: PALAIOS
Published: 01 March 2013
PALAIOS (2013) 28 (3): 137–140.
... in the spring resulting from the use of carbohydrate stores from previous growing seasons ( Sauter, 1967 ; Essiamah and Eschrich, 1985 ; Barbaroux and Breda, 2002 ). In this context, the use of carbohydrates as a carbon source to supply winter respiration and to build new tissues in the absence...
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Journal Article
Journal: Clay Minerals
Published: 01 March 2013
Clay Minerals (2013) 48 (1): 129–141.
... the suspensions. It was observed that antisedimentation ratios of the CS/BNT/SO dispersions increased with increasing CS content and dispersed particle size. It can be attributed to their decreasing densities with increasing CS content and dispersed particle size, which supports the CS/BNT composite formation...
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