Structural investigation of amylose complexes with small ligands: helical conformation, crystalline structure and thermostability

Autor: P.-Y. Le Bail, Alain Buléon, C. Rondeau
Přispěvatelé: PhysicoChimie des Macromolécules (LPCM), Institut National de la Recherche Agronomique (INRA), Unité de recherche sur les Biopolymères, Interactions Assemblages (BIA), ProdInra, Migration
Jazyk: angličtina
Rok vydání: 2005
Předmět:
Hot Temperature
Magnetic Resonance Spectroscopy
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering
WAXD
Molecular Conformation
02 engineering and technology
Calorimetry
Crystal structure
Crystallography
X-Ray
Ligands
Biochemistry
Crystallinity
chemistry.chemical_compound
[SPI]Engineering Sciences [physics]
0404 agricultural biotechnology
Differential scanning calorimetry
X-Ray Diffraction
Structural Biology
Amylose
[SDV.IDA]Life Sciences [q-bio]/Food engineering
Carbohydrate Conformation
[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
SPECTROSCOPIE RMN DU SOLIDE
Molecular Biology
ComputingMilieux_MISCELLANEOUS
Thermostability
Calorimetry
Differential Scanning
Molecular Structure
DIFFRACTION DES RAYONS X AUX GRANDS ANGLES
04 agricultural and veterinary sciences
General Medicine
Nuclear magnetic resonance spectroscopy
[SDV.IDA] Life Sciences [q-bio]/Food engineering
021001 nanoscience & nanotechnology
040401 food science
Carbon
Crystallography
Solid-state nuclear magnetic resonance
chemistry
0210 nano-technology
Zdroj: International Journal of Biological Macromolecules
International Journal of Biological Macromolecules, Elsevier, 2005, 35 (1-2), pp.1-7. ⟨10.1016/j.ijbiomac.2004.09.001⟩
International Journal of Biological Macromolecules, Elsevier, 2005, 35 (1-2), pp.1-7
ISSN: 0141-8130
DOI: 10.1016/j.ijbiomac.2004.09.001⟩
Popis: Crystalline amylose complexes were prepared with decanal, 1-butanol, menthone and alpha-naphtol. Their crystalline structure and the related helical conformation, determined by wide angle X-ray diffraction (WAXD) and 13C CPMAS solid state NMR, were assigned to V6I, V6II, V6III and V8 types, respectively. It was possible to propose some hypotheses on the possible nature of interactions and especially intra-/inter-helical inclusion. Some shifts in the NMR C1 carbon signals were attributed to the presence of ligand in specific sites inside the structure for a same type of V6 helical conformation. Moreover, the crystallinity and polymorphic changes induced by desorption/rehydration were studied. A general increase of the carbon resonances sharpness upon rehydration has been observed, but also a V6II-V6I transition when decreasing the water content. Differential scanning calorimetry (DSC) experiments were also performed to approach the thermostability of the four types of complex and also the way they form again after melting/cooling sequences.
Databáze: OpenAIRE
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