Mutarotation in D-fructose melt monitored by dielectric spectroscopy.
Broadband dielectric spectroscopy was employed to investigate the kinetics of the mutarotation of D-fructose. In this article, D-fructose tautomerization behavior in pure melt is revealed. By monitoring structural relaxation time shift, we were able to determine speed in temperature range 303-333 K and the activation energy for this phenomenon. It is equal to 107 kJ/mol, which is very high in comparison to the solvated system. We have also shown the influence of this process to the gamma-relaxation (secondary relaxation process). Dielectric spectroscopy derived complex information about mutarotational dynamics.
Wlodarczyk
P
P
Institute of Physics, Silesian University, Katowice, Poland.
Kaminski
K
K
Paluch
M
M
Ziolo
J
J
D004583:Electrons; D005632:Fructose / Q000737:chemistry*; D007700:Kinetics; D044367:Phase Transition; D013057:Spectrum Analysis
D005632:Fructose