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Relationship Between Static Electrical Conductivity and Unfrozen Water Content in Food Products
Author(s) -
HORI T.,
KAKO M.,
HAYASHI H.
Publication year - 1982
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.1365-2621.1982.tb07659.x
Subject(s) - water content , conductivity , electrical resistivity and conductivity , freezing point , linear relationship , atmospheric temperature range , bound water , food products , chemistry , food science , materials science , thermodynamics , mathematics , physics , statistics , geotechnical engineering , electrical engineering , organic chemistry , molecule , engineering
The static electrical conductivity measurements on frozen foods such as citrus juice and varieties of cheese showed that both conductivity and unfrozen water content in food products varied directly with temperature. In describing the log σ vs 1/T curve, where σ is the conductivity and T is the absolute temperature, it was found that the linear portion of the curves at low temperature was related to bound water content which was independent of temperature, whereas the non‐linear portion in the temperature range between the freezing point and 10 or 35 degrees below the freezing point was related to the unfrozen free water content which was dependent on temperature.

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