Application of small-angle scattering to study the effects of moisture content on a native soy protein
The nano- and microstructure of glycinin, a soybean protein, has been investigated as a function of moisture for moisture contents between 4 and 21 wt%. Glycinin exhibits peaks in the small-angle region whose positions show minimal change with X-rays for samples up to 13% moisture. However, the use...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
2008
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| Online Access: | http://hdl.handle.net/20.500.11937/31911 |
| _version_ | 1848753515785093120 |
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| author | Kealley, Cat Elcombe, M. Wuhrer, R. Gilbert, E. |
| author_facet | Kealley, Cat Elcombe, M. Wuhrer, R. Gilbert, E. |
| author_sort | Kealley, Cat |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The nano- and microstructure of glycinin, a soybean protein, has been investigated as a function of moisture for moisture contents between 4 and 21 wt%. Glycinin exhibits peaks in the small-angle region whose positions show minimal change with X-rays for samples up to 13% moisture. However, the use of neutron scattering, and the associated enhancement in contrast, results in the Bragg peaks being well resolved up to higher moisture contents; the associated shift in peak positions between 4 and 21% moisture are consistent with the expansion of a hexagonal unit cell as a function of moisture content. A Porod slope of ~-4 indicates that the interface between the 'dry' protein powder and the surrounding medium at a length-scale of at least 3 µm down to ~20 nm is smooth and sharp. Scanning electron microscopy indicates that the powders, with low moisture content, have a porous appearance, with the porosity decreasing and microstructure expanding as the moisture content increases. © 2008 International Union of Crystallography. |
| first_indexed | 2025-11-14T08:25:45Z |
| format | Journal Article |
| id | curtin-20.500.11937-31911 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:25:45Z |
| publishDate | 2008 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-319112018-03-29T09:09:14Z Application of small-angle scattering to study the effects of moisture content on a native soy protein Kealley, Cat Elcombe, M. Wuhrer, R. Gilbert, E. The nano- and microstructure of glycinin, a soybean protein, has been investigated as a function of moisture for moisture contents between 4 and 21 wt%. Glycinin exhibits peaks in the small-angle region whose positions show minimal change with X-rays for samples up to 13% moisture. However, the use of neutron scattering, and the associated enhancement in contrast, results in the Bragg peaks being well resolved up to higher moisture contents; the associated shift in peak positions between 4 and 21% moisture are consistent with the expansion of a hexagonal unit cell as a function of moisture content. A Porod slope of ~-4 indicates that the interface between the 'dry' protein powder and the surrounding medium at a length-scale of at least 3 µm down to ~20 nm is smooth and sharp. Scanning electron microscopy indicates that the powders, with low moisture content, have a porous appearance, with the porosity decreasing and microstructure expanding as the moisture content increases. © 2008 International Union of Crystallography. 2008 Journal Article http://hdl.handle.net/20.500.11937/31911 10.1107/S0021889808012648 restricted |
| spellingShingle | Kealley, Cat Elcombe, M. Wuhrer, R. Gilbert, E. Application of small-angle scattering to study the effects of moisture content on a native soy protein |
| title | Application of small-angle scattering to study the effects of moisture content on a native soy protein |
| title_full | Application of small-angle scattering to study the effects of moisture content on a native soy protein |
| title_fullStr | Application of small-angle scattering to study the effects of moisture content on a native soy protein |
| title_full_unstemmed | Application of small-angle scattering to study the effects of moisture content on a native soy protein |
| title_short | Application of small-angle scattering to study the effects of moisture content on a native soy protein |
| title_sort | application of small-angle scattering to study the effects of moisture content on a native soy protein |
| url | http://hdl.handle.net/20.500.11937/31911 |