Conformation of Pullulan in Aqueous Solution Studied by Small-Angle X-ray Scattering
Small-angle X-ray scattering functions were measured for six pullulan samples with molecular weights ranging from 2.3 × 10<sup>4</sup> to 7.4 × 10<sup>5</sup> in 0.05 M aqueous NaCl at 25 °C and fitted by the perturbed wormlike chain model, comprising touched-bead sub-bodies,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/6/1266 |
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| author | Jia Yang Takahiro Sato |
| author_facet | Jia Yang Takahiro Sato |
| author_sort | Jia Yang |
| collection | DOAJ |
| description | Small-angle X-ray scattering functions were measured for six pullulan samples with molecular weights ranging from 2.3 × 10<sup>4</sup> to 7.4 × 10<sup>5</sup> in 0.05 M aqueous NaCl at 25 °C and fitted by the perturbed wormlike chain model, comprising touched-bead sub-bodies, to obtain wormlike chain parameters. The parameter values determined were consistent with those determined from previously reported dilute solution properties of aqueous pullulan. Because radii of gyration of not only pullulan polymers, but also pullulan oligomers were consistently explained by the touched-bead wormlike chain model perturbed by the excluded volume effect, the pullulan chain takes a local conformation considerably different from the amylose chain, although both polysaccharides are flexible polymers with an approximately same characteristic ratio. |
| first_indexed | 2024-03-10T19:27:13Z |
| format | Article |
| id | doaj.art-e5fc5366bed2484d8cb6a0c4fdfb5e80 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T19:27:13Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-e5fc5366bed2484d8cb6a0c4fdfb5e802023-11-20T02:30:42ZengMDPI AGPolymers2073-43602020-06-01126126610.3390/polym12061266Conformation of Pullulan in Aqueous Solution Studied by Small-Angle X-ray ScatteringJia Yang0Takahiro Sato1Department of Macromolecular Science, Osaka University, Toyonaka Osaka 560-0043, JapanDepartment of Macromolecular Science, Osaka University, Toyonaka Osaka 560-0043, JapanSmall-angle X-ray scattering functions were measured for six pullulan samples with molecular weights ranging from 2.3 × 10<sup>4</sup> to 7.4 × 10<sup>5</sup> in 0.05 M aqueous NaCl at 25 °C and fitted by the perturbed wormlike chain model, comprising touched-bead sub-bodies, to obtain wormlike chain parameters. The parameter values determined were consistent with those determined from previously reported dilute solution properties of aqueous pullulan. Because radii of gyration of not only pullulan polymers, but also pullulan oligomers were consistently explained by the touched-bead wormlike chain model perturbed by the excluded volume effect, the pullulan chain takes a local conformation considerably different from the amylose chain, although both polysaccharides are flexible polymers with an approximately same characteristic ratio.https://www.mdpi.com/2073-4360/12/6/1266pullulanamylosesmall-angle X-ray scatteringscattering functionradius of gyrationwormlike chain |
| spellingShingle | Jia Yang Takahiro Sato Conformation of Pullulan in Aqueous Solution Studied by Small-Angle X-ray Scattering Polymers pullulan amylose small-angle X-ray scattering scattering function radius of gyration wormlike chain |
| title | Conformation of Pullulan in Aqueous Solution Studied by Small-Angle X-ray Scattering |
| title_full | Conformation of Pullulan in Aqueous Solution Studied by Small-Angle X-ray Scattering |
| title_fullStr | Conformation of Pullulan in Aqueous Solution Studied by Small-Angle X-ray Scattering |
| title_full_unstemmed | Conformation of Pullulan in Aqueous Solution Studied by Small-Angle X-ray Scattering |
| title_short | Conformation of Pullulan in Aqueous Solution Studied by Small-Angle X-ray Scattering |
| title_sort | conformation of pullulan in aqueous solution studied by small angle x ray scattering |
| topic | pullulan amylose small-angle X-ray scattering scattering function radius of gyration wormlike chain |
| url | https://www.mdpi.com/2073-4360/12/6/1266 |
| work_keys_str_mv | AT jiayang conformationofpullulaninaqueoussolutionstudiedbysmallanglexrayscattering AT takahirosato conformationofpullulaninaqueoussolutionstudiedbysmallanglexrayscattering |