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| Content Provider | Springer Nature Link |
|---|---|
| Author | Stanek, Michael Falk, Heinz Huber, Anton |
| Copyright Year | 1998 |
| Abstract | The assignment of 13C and 1H NMR signals of three highly short-chain branched α-D-glucan samples from animal tissue (glycogen) of different provenience, dissolved in dimethylsulfoxide, was achieved using two-dimensional H-H and C-H correlated spectroscopy. The results were comparable to those recently obtained for plant derived short-chain branched α-D-glucans (amylopectin) and non-branched/long-chain branched α-D-glucans (amylose). From these assignments and the integration of pertinent proton signals, the branching degree of the glycogen samples was derived to amount 13.5%. These samples were also analyzed with respect to their degree of polymerization distribution by means of the SEC-DRI/LALLS method. These data and the line broadening of the 1H and 13C NMR spectra of the glycogen samples compared to those of amylopectin and amylose supported the assumption of a broad (homogeneous) distribution of glucose residues in glycogen. Eine Zuordnung von 13C- und 1H-NMR-Signalen von drei in Dimethylsulfoxid gelösten kurzkettenverzweigten α-D-Glucanen aus tierischen Geweben (Glycogen) unterschiedlicher Provenienz konnte mit Hilfe zweidimensionaler H-H- und C-H-Korrelationsspektroskopie erzielt werden. Die Ergebnisse waren vergleichbar zu den kürzlich an pflanzlichen kurzkettenverzweigten α-D-Glucanen (Amylopektin) und linearen bzw. langkettenverzweigten α-D-Glucanen erhaltenen Zuordnungen. Aus diesen Zuordnungen und der Integration entsprechender Protonensignale konnte ein Verzweigungsgrad dieser Glycogenproben von 13.5% abgeleitet werden. Diese Proben wurden auch mit Hilfe der SEC-DRI/LALLS-Methodik in Hinblick auf deren Polymerisationsgradverteilung untersucht. Diese Daten und die Signalverbreiterung in den 1H- und 13C-NMR Spektren der Glycogenproben verglichen mit jenen des Amylopektins und der Amylose erhärten die Vorstellung einer breiten (homogenen) Verteilung der Glucose-Reste in Glycogen. |
| Starting Page | 355 |
| Ending Page | 364 |
| Page Count | 10 |
| File Format | |
| ISSN | 00269247 |
| Journal | Monatshefte für Chemie - Chemical Monthly |
| Volume Number | 129 |
| Issue Number | 4 |
| e-ISSN | 14344475 |
| Language | German |
| Publisher | Springer-Verlag |
| Publisher Date | 1998-04-01 |
| Publisher Place | Vienna |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Chemistry/Food Science Organic Chemistry Inorganic Chemistry Analytical Chemistry Physical Chemistry Theoretical and Computational Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
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