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The electrical conductivity of milk - The effect of dilution and temperature

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Author

Summary, in English

The electrical conductivity of milk at various dilutions was measured at different temperatures from; 2 to 70 degrees C The results showed that dilution has only, a small influence on the temperature dependence of conductivity. A simple power-law model predicts that the conductivity is proportional to the milk concentration to the power of 0.84 and a two-term model describes the temperature dependency. The overall model has a standard deviation of 0.0067 mS cm(-1), which corresponds approximately to 0.1% milk at 2 degrees C and 0.07% milk at 70 degrees C. It was further shown that for less than about 25% milk in water Kohlausch's law and the Dekve-Huckel-Onsager theory can be used to describe the relationship between the concentration, temperature, and conductivity using a representative limiting molar conductivity of milk ions of 75 mS cm(2) mol(-1).

Department/s

  • Department of Food Technology, Engineering and Nutrition

Publishing year

2005

Language

English

Pages

15-22

Publication/Series

International Journal of Food Properties

Volume

8

Issue

1

Document type

Journal article

Publisher

Taylor & Francis

Topic

  • Food Engineering

Status

Published

ISBN/ISSN/Other

  • ISSN: 1532-2386