Analysis of the Native Structure of Starch Granules with X-ray Microfocus Diffraction
Results of microfocus X-ray diffraction at the ESRF are presented which provide unique evidence supporting a model for the structure of starch, much of this model having been previously derived only on the basis of circumstantial evidence. Here we present data from ∼2 μm regions within granules whic...
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| Veröffentlicht in: | Macromolecules 1997-06, Vol.30 (13), p.3813-3820 |
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| container_issue | 13 |
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| container_title | Macromolecules |
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| creator | Waigh, Thomas A Hopkinson, Ian Donald, Athene M Butler, Michael F Heidelbach, Florian Riekel, Christian |
| description | Results of microfocus X-ray diffraction at the ESRF are presented which provide unique evidence supporting a model for the structure of starch, much of this model having been previously derived only on the basis of circumstantial evidence. Here we present data from ∼2 μm regions within granules which have been subjected to no sample preparation and obtain oriented 2-D fiber patterns from the edge of B-type potato starch granules. This data is in good agreement with that previously calculated by Imberty/Perez for a B-type amylose fiber. The peripheral amylopectin helices are oriented in such a way they do not point to a single focus. No discontinuities (“grain boundaries”) within a granule could be found at the 10 μm level of resolution. |
| doi_str_mv | 10.1021/ma970075w |
| format | Article |
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Here we present data from ∼2 μm regions within granules which have been subjected to no sample preparation and obtain oriented 2-D fiber patterns from the edge of B-type potato starch granules. This data is in good agreement with that previously calculated by Imberty/Perez for a B-type amylose fiber. The peripheral amylopectin helices are oriented in such a way they do not point to a single focus. No discontinuities (“grain boundaries”) within a granule could be found at the 10 μm level of resolution.</description><identifier>ISSN: 0024-9297</identifier><identifier>EISSN: 1520-5835</identifier><identifier>DOI: 10.1021/ma970075w</identifier><identifier>CODEN: MAMOBX</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Applied sciences ; Exact sciences and technology ; Natural polymers ; Physicochemistry of polymers ; Starch and polysaccharides</subject><ispartof>Macromolecules, 1997-06, Vol.30 (13), p.3813-3820</ispartof><rights>Copyright © 1997 American Chemical Society</rights><rights>1997 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a324t-69dea132669a5fa758b33a50c14d7e26ac122d5b6abd4585bca6534280a6c1e03</citedby><cites>FETCH-LOGICAL-a324t-69dea132669a5fa758b33a50c14d7e26ac122d5b6abd4585bca6534280a6c1e03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/ma970075w$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/ma970075w$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,2765,27076,27924,27925,56738,56788</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2712957$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Waigh, Thomas A</creatorcontrib><creatorcontrib>Hopkinson, Ian</creatorcontrib><creatorcontrib>Donald, Athene M</creatorcontrib><creatorcontrib>Butler, Michael F</creatorcontrib><creatorcontrib>Heidelbach, Florian</creatorcontrib><creatorcontrib>Riekel, Christian</creatorcontrib><title>Analysis of the Native Structure of Starch Granules with X-ray Microfocus Diffraction</title><title>Macromolecules</title><addtitle>Macromolecules</addtitle><description>Results of microfocus X-ray diffraction at the ESRF are presented which provide unique evidence supporting a model for the structure of starch, much of this model having been previously derived only on the basis of circumstantial evidence. Here we present data from ∼2 μm regions within granules which have been subjected to no sample preparation and obtain oriented 2-D fiber patterns from the edge of B-type potato starch granules. This data is in good agreement with that previously calculated by Imberty/Perez for a B-type amylose fiber. The peripheral amylopectin helices are oriented in such a way they do not point to a single focus. 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Here we present data from ∼2 μm regions within granules which have been subjected to no sample preparation and obtain oriented 2-D fiber patterns from the edge of B-type potato starch granules. This data is in good agreement with that previously calculated by Imberty/Perez for a B-type amylose fiber. The peripheral amylopectin helices are oriented in such a way they do not point to a single focus. No discontinuities (“grain boundaries”) within a granule could be found at the 10 μm level of resolution.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><doi>10.1021/ma970075w</doi><tpages>8</tpages></addata></record> |
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| ispartof | Macromolecules, 1997-06, Vol.30 (13), p.3813-3820 |
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| language | eng |
| recordid | cdi_crossref_primary_10_1021_ma970075w |
| source | ACS Publications |
| subjects | Applied sciences Exact sciences and technology Natural polymers Physicochemistry of polymers Starch and polysaccharides |
| title | Analysis of the Native Structure of Starch Granules with X-ray Microfocus Diffraction |
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