Crystallinity and structuring role of water in native and recrystallized starches by 13C CP-MAS NMR spectroscopy: 1: Spectral decomposition
作者： M Paris , H Bizot , J Emery , J.Y Buzaré , A Buléon
DOI: 10.1016/S0144-8617(99)00022-3
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摘要: Abstract Amorphous, native, and recrystallized starches were studied by 13 C CP-MAS NMR spectroscopy with respect to their behavior hydration. The study of space groups, associated crystalline polymorphs (B2 P6 1 for A B forms, respectively), provided decomposition rules the spectral part due phases. Moreover, subtraction a standard amorphous spectrum apparently showed existence three phases in native (amorphous, partially-ordered crystalline) only two spherulitic crystals (partially-ordered crystalline). proportion each phase was estimated at different hydration levels. amount compared degree crystallinity as evaluated wide angle X-ray scattering. changes could be interpreted terms complementary roles water molecules, i.e. structuring plasticizing.
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