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Analysis of Solute Distribution in Ice Formed in Progressive Freeze-concentration

机译：渐进冻结浓度下冰中溶质分布的分析

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Progressive freeze-concentration of 3 to 30% sucrose solutions were carried out using a small cylindrical apparatus. The solute concentration distribution in the ice phase was determined by cutting the ice formed into fractions and analyzing the solute concentration in the fractions. The solute concentration in the ice phase was found to increase as the concentration process progressed. From the solid phase analysis, the corresponding liquid phase concentration was estimated in the concentration process and an effective partition coefficient, K, was determined. K was also obtained from the concentration polarization theory. To this purpose, the limiting partition coefficient, K_0, was obtained, then K was determined from the concentration polarization theory. K obtained by the two methods agreed well. K increased with an increase in solute concentration of sucrose, which corresponds to the higher incorporation rate of solute into the ice phase in progressive freeze-concentration.
机译：使用小型圆筒装置进行3至30％蔗糖溶液的渐进冷冻浓缩。通过将形成的冰切成馏分并分析各馏分中的溶质浓度来确定冰相中的溶质浓度分布。发现冰相中的溶质浓度随着浓缩过程的进行而增加。通过固相分析，可以在浓缩过程中估算出相应的液相浓度，并确定有效的分配系数K。还从浓度极化理论获得了K。为此，获得极限分配系数K_0，然后根据浓度极化理论确定K。通过两种方法获得的K非常吻合。钾随着蔗糖溶质浓度的增加而增加，这对应于在逐步冷冻浓缩中溶质向冰相的掺入率更高。

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