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The viscosities of supercooled liquid fructose and glucose are measured between a lower viscosiry limit corresponding to 95°C and an upper limit of about lo6 Pa.s. The glass transition temperature of fructose is estimated from the viscosity data using different extrapolation procedures. The Vogel-Tamman-Fulcher and power-law equations gave estimates of 283K and 289K, respectively and the Williams-Landel-Ferry equation 286K. These values ure in agreement with recent calorimetric determinations of the glass transition temperature.

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