ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Measurements of oil-water emulsions show that dielectric properties are predicted at 3,000 MHz, 25°C by the noninteractive Fricke model for complex conductivity of colloidal suspensions. Similar measurements for methanol-water and ethanol-water show that dielectric properties are predicted at 3,000 MHz, 25°C by an empirical combination, designated as the interactive Fricke model, of the noninteractive Fricke model and the Debye models for pure polar liquids with single relaxation times. A tentative physical-chemical basis for prediction of dielectric properties in liquid food systems is suggested, which involves concepts of relative dielectric activities of major chemical constituents, extent of solvation and colloidal content and is based on mechanisms of dielectric behavior observed in aqueous mixtures at microwave frequencies.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1974.tb02966.x
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