Investigation of Starch Hydration by 2D Time Domain NMR

• Authors: M Witek , H Peemoeller , J Szymońska , B Blicharska
• Languages of publication: EN

Abstracts

EN

Proton exchange between spin groups of the solid matrix of hydrated granular potato starch and water was studied using the 2D time domain NMR. The proton spin-spin relaxation time T_2, and spin-lattice relaxation time T_1 (selective and non-selective pulse sequences) were measured at room temperature. The observed spin relaxation results were analysed for exchange assuming a two-site exchange model (between water and solid matrix of starch). In this analysis we determined the intrinsic spin-lattice relaxation time for water protons (49 ms) and solid starch matrix protons (172 ms), as well as the water-starch magnetization exchange rate (86 s^{-1}).

Keywords

EN

82.56.Na; 82.35.Pq

Discipline

• 82.35.Pq: Biopolymers, biopolymerization(see also 87.15.rp Polymerization in biological and medical physics)
• 82.56.Na: Relaxation

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 109
• Issue: 3
• Pages: 359-364

Dates

published

2006-03

received

2005-05-20

Contributors

author

M Witek

• Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

author

H Peemoeller

• Department of Physics, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada N2L 3G1

author

J Szymońska

• Agriculture Academy, al. Mickiewicza 21, 31-120 Kraków, Poland

author

B Blicharska

• Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.109.359