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Limiting Partition Coefficient in Progressive Freeze‐concentration
Author(s) -
Gu X.,
Suzuki T.,
Miyawaki Osato
Publication year - 2005
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2005.tb08317.x
Subject(s) - partition coefficient , chemistry , thermodynamics , limiting , osmotic pressure , viscosity , partition (number theory) , component (thermodynamics) , mass transfer , chromatography , biochemistry , mathematics , mechanical engineering , physics , combinatorics , engineering
ABSTRACT: In the progressive freeze‐concentration, limiting partition coefficient, K 0 , is a very important process parameter, which corresponds to the partition coefficient of a solute between the ice and liquid phase assuming the infinitesimal ice growth rate and/or the infinite mass‐transfer rate at the ice‐liquid interface. K 0 was determined for glucose and various electrolytes in the single‐component and multi‐component systems. K 0 was dependent both on the concentration and the type of solute. In the single‐component system, osmotic pressure was proved to be the major determinant of K 0 . In the multi‐component system, K 0 for a solute was affected by the coexisting solute through the osmotic pressure of the total system. K 0 was also dependent on viscosity when the change in the osmotic pressure was limited but the change in the viscosity was considerable because of the coexisting solute.