Please use this identifier to cite or link to this item:
http://digitalrepository.fccollege.edu.pk/handle/123456789/477
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Iqbal, Mohammad S. | - |
dc.contributor.author | Massey, Shazma | - |
dc.contributor.author | MacNaughtanb, William | - |
dc.contributor.author | Williams, Huw E.L. | - |
dc.contributor.author | Wolf, Bettina | - |
dc.date.accessioned | 2019-04-08T06:00:53Z | - |
dc.date.available | 2019-04-08T06:00:53Z | - |
dc.date.issued | 2017-07-24 | - |
dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/477 | - |
dc.description.abstract | Superficially similar carbohydrate polymers from similar sources can have dramatically different charac-teristics. This work seeks to examine the molecular properties responsible for these differences. Protonsresponsible for cross-polarization in the anomeric region of Acacia nilotica (AN) were replaced easily bydeuterium, but not for Acacia modesta (AM). Time constants describing the mobility and cross-polarizationtransfer were both found to be lower for AM. Variable contact time experiments showed poorer fits andmore heterogeneity for AN. Solution state HSQC experiments showed a lower number of environmentsin the anomeric region for AM. The relaxation time T2of AM solutions had a lower value consistent witha higher viscosity. The Tg of solutions were −14.5◦C AN and −18.5◦C AM. These results form a largelyself-consistent picture of molecular differences between AN and AM, suggesting a more compact butheterogeneous structure for AN and more branching in the case of AM. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | Elsevier | en_US |
dc.subject | Chemistry | en_US |
dc.title | A structural study of Acacia nilotica and Acacia modesta gums | en_US |
dc.type | Article | en_US |
Appears in Collections: | Chemistry Department |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
CP2017.pdf | 1.83 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.