Rheological Study of Mutarotation of Fructose in Anhydrous State

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• 作者：Yangyang Wang ; Patryk Wlodarczyk ; Alexei P. Sokolov ; Marian Paluch
• 刊名：The Journal of Physical Chemistry B
• 出版年：2013
• 出版时间：February 7, 2013
• 年：2013
• 卷：117
• 期：5
• 页码：1475-1479
• 全文大小：272K
• 年卷期：v.117,no.5(February 7, 2013)
• ISSN：1520-5207

文摘

Rheological measurement was employed to study the mutarotation of pan class="smallcaps">dpan>-fructose in anhydrous state. By monitoring the evolution of shear viscosity with time, rate constants for mutarotation were estimated, and two different stages of this reaction were identified. One of the mutarotation stages is rapid and has a low activation energy, whereas the other is much slower and has a much higher activation energy. Possible conversions corresponding to these two phases are discussed. This work demonstrates that, in addition to the routine techniques such polarimetry and gas鈥搇iquid chromatography, rheological measurement can be used as an alternative method to continuously monitor the mutarotation of sugars.