| Autor: |
J P, Roubroeks, D I, Mastromauro, R, Andersson, B E, Christensen, P, Aman |
| Rok vydání: |
2001 |
| Předmět: |
|
| Zdroj: |
Biomacromolecules. 1(4) |
| ISSN: |
1525-7797 |
| Popis: |
Oat beta-glucan was partially degraded by lichenase for different periods of time. Weight-average molecular weights were obtained from SEC-RI-RALLS-Visc and ranged from 5300 to 257,200. Weight-average intrinsic viscosities ranged from 7 to 160 mL/g. The determined viscosity equation, [eta] = 5.47 x 10(-3) M 0.82, indicated an extended coil conformation. When the coil was modeled as a wormlike chain a persistent length of 2.30 nm was obtained. 1H and 13C NMR spectroscopy were used to identify the structural units in the partially degraded beta-glucan. The identification of the disaccharide laminaribiose in the hydrolysates may suggest the presence of a new structural feature in cereal beta-glucan. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
