Solid-state 13 C NMR characterization of surface fire effects on the composition of organic matter in both soil and soil solution from a coniferous forest

Geoderma ◽  
2017 ◽  
Vol 305 ◽  
pp. 394-406 ◽  
Author(s):  
Kerstin Näthe ◽  
Delphis F. Levia ◽  
Markus Steffens ◽  
Beate Michalzik
Keyword(s):  
Organic Matter ◽  
Solid State ◽  
Soil Solution ◽  
Coniferous Forest ◽  
Fire Effects ◽  
Surface Fire ◽  
Nmr Characterization ◽  
C Nmr

Advanced Solid-State NMR Characterization of Marine Dissolved Organic Matter Isolated Using the Coupled Reverse Osmosis/Electrodialysis Method

2012 ◽  
Vol 46 (11) ◽  
pp. 5806-5814 ◽  
Author(s):  
Jingdong Mao ◽  
Xueqian Kong ◽  
Klaus Schmidt-Rohr ◽  
Joseph J. Pignatello ◽  
E. Michael Perdue
Keyword(s):  
Organic Matter ◽  
Solid State ◽  
Dissolved Organic Matter ◽  
Reverse Osmosis ◽  
Solid State Nmr ◽  
Nmr Characterization

Solid-state 13C NMR characterization of cell walls of ripening strawberries

1997 ◽  
Vol 75 (11) ◽  
pp. 1957-1964 ◽  
Author(s):  
T. H. Koh ◽  
L. D. Melton ◽  
R. H. Newman
Keyword(s):  
Solid State ◽  
Cell Walls ◽  
Proton Spin ◽  
Plant Cell Walls ◽  
Fragaria Ananassa ◽  
Nmr Characterization ◽  
Strawberry Fruit Ripening ◽  
Wall Components ◽  
C Nmr

Ripe and unripe cell walls isolated from the cortical tissues of strawberry (Fragaria × ananassa Duchesne cv. Yolo) using HEPES-buffered phenol of pH 6.5 were analysed using solid-state 13C nuclear magnetic resonance. Changes in cell wall components during ripening were investigated by separating the spectra, using proton spin relaxation editing, into three subspectra based on the mobility of the molecules. The subspectra can be assigned to rigid material (cellulose), semirigid components (primarily polygalacturonic acid) and semimobile (other detectable noncellulosic substances). The results show that, with ripening, separation between the semirigid and semimobile domains became more distinct. Associated with this, the ratio of noncellulosic material (i.e., pectins and hemicelluloses) to rigid cellulose decreased from 2.3 for unripe to 1.9 for ripe. The crystallinity of the cellulose molecules remained unaltered throughout ripening. Furthermore, our work indicates that the basic cellulose crystallite of strawberry cell walls appeared exceptionally small compared with other systems studied thus far. Key words: solid-state CP-MAS 13C NMR, cellulose, plant cell walls, strawberry, fruit ripening.

scholarly journals Characterization of functional groups in estuarine dissolved organic matter by DNP‐enhanced 15N and 13C solid‐state NMR

ChemPhysChem ◽  
2021 ◽  
Author(s):  
Florian Venel ◽  
Hiroki Nagashima ◽  
Andrew G.M. Rankin ◽  
Christelle Anquetil ◽  
Vytautas Klimavicius ◽  
...  
Keyword(s):  
Organic Matter ◽  
Solid State ◽  
Dissolved Organic Matter ◽  
Functional Groups ◽  
Solid State Nmr

Phosphorus-31 two-dimensional solid-state exchange NMR characterization of dynamics of crosslinks in a model network polymer

1993 ◽  
Vol 26 (5) ◽  
pp. 1008-1012 ◽  
Author(s):  
J. F. Shi ◽  
L. Charles Dickinson ◽  
William J. MacKnight ◽  
James C. W. Chien ◽  
Changan Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Two Dimensional ◽  
Network Polymer ◽  
Model Network ◽  
Nmr Characterization
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