Biopolymers: A molecular paleontology approach by Neal S. Gupta PDF

By Neal S. Gupta

ISBN-10: 9400779356

ISBN-13: 9789400779358

ISBN-10: 9400779364

ISBN-13: 9789400779365

This e-book offers an summary, study compendium and an advent to the technological know-how of molecular paleontology, together with literature assessment for non-geochemists. Analytical tools hired are integrated as part of each one bankruptcy that underpin this department of paleontology and certainly geochemistry. the first usefulness of this quantity is for natural geochemists, molecular palaeontologists, and molecular archeologists. Researchers, graduate scholars and teachers drawn to astrobiology from a paleontological viewpoint can also locate this to be valuable.

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As cuticles constitute a multi-layered structure with a diverse chemistry, a chemical degradation approach targeted at specific bipolymeric moieties may not be adequate to rank the preservational potential of each category of biomolecules in a single chemolytic protocol. , marine vs. lacustrine), the discrepancy may reflect differences in the duration of decay. Using HR-MAS NMR (high resolution- magic angle spinning- nuclear magnetic spectroscopy) spectroscopy, Kelleher et al. (2006) documented an increase in the proportion of aliphatic cutin components of pine needles during the first 10 weeks of their natural decay when this concentration plateaued at a high level throughout the experiment.

A. A. A. A. A. A. A. A. A. A. A. A. A. A. A. A. ) 8-27 (12-20) 8-32 (11-15) + + + + 10-31 (26-31) 10-33 (26-31) 10-31 (26-31) 9-31 (26-31) Aliphatic geopolymer (continued) Gupta et al. (2007a) Gupta et al. (2007a) Gupta et al. (2007a) Gupta et al. (2007a) Tegelaar et al. (1991) Logan et al. (1993) Logan et al. (1993) Yang et al. (2005) Gupta et al. (2007b) Gupta et al. (2007b) Stankiewicz et al. (1998a) Collinson et al. (1998) Yang et al. (2005) Tegelaar et al. (1991) Tegelaar et al. A. A. A. A.

Middle Eocene leaves from the Axel Heiberg Island (Canadian Arctic Archipelago) analysed here yielded lignin products similar to those identified from the Ellesmere Island fossils, with polysaccharide moieties (Yang et al. 2007; Jahren and Stenberg 2008). Metasequoia leaves from the Miocene Clarkia site in Idaho, USA, in contrast, are characterized by a dramatic reduction in polysaccharide moieties (Logan et al. 1993; Yang et al. 2005). The fossils from the Eocene of Republic do not show any lignin or polysaccharides but are composed of a macromolecular n-alkyl component.

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Biopolymers: A molecular paleontology approach by Neal S. Gupta

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