Title :
Optimization of the microwave determination of water in foods using principal component analysis
Author :
Daschner, Frank ; Kent, Mike ; Knöchel, Reinhard ; Berger, Ulla-Karin
Author_Institution :
Kiel Univ., Germany
Abstract :
In this paper a method for determining the composition of foodstuffs from the measured microwave dielectric spectra using an open ended coaxial probe is presented. The dielectric spectra of several kinds of meat were collected in the range of 200 MHz to 12 GHz. The data are used to predict the composition of the materials applying principal component analysis and regression. Effects of the reduction of the used bandwidth on the performance are investigated. Optimal frequency ranges with respect to measurement accuracy and hardware effort for an instrument are defined
Keywords :
dielectric loss measurement; food processing industry; microwave reflectometry; moisture measurement; permittivity measurement; principal component analysis; 200 MHz to 12 GHz; dedicated network analyser; food industry; foodstuffs composition; hardware effort; loss factor; measurement accuracy; meat water content; microwave dielectric spectra; microwave reflection; open ended coaxial probe; optimal frequency ranges; prawns; principal component analysis; prototype instrument; regression; used bandwidth; water in foods; Bandwidth; Coaxial components; Composite materials; Dielectric materials; Dielectric measurements; Frequency; Microwave measurements; Microwave theory and techniques; Principal component analysis; Probes;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.846804
