3 years ago

The anti-frozen attribute of sugar solutions

The anti-frozen attribute of sugar solutions
Low-temperature Raman spectroscopy revealed that sugar solvation depresses the critical temperature for homogeneous ice nucleation (T N) whose depression extent follows the order of: trehalose>glucose>fructose at the same concentration and the extent of T N depression for a specific sugar is proportional to its concentration. We attribute the T N depression to the O:H vibration mode redshift induced by the solute dipolar polarization and distortion of the solvent hydrogen bond (O:HO or HB with “:” being the electron lone air of oxygen). The O:H phonon redshift lowers the Debye temperature of the O:H specific heat and disperses the quasisolid-phase boundary and the associated T N.

Publisher URL: www.sciencedirect.com/science

DOI: S0167732217333123

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