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ONLINE DETERMINATION OF INTER ALIA FAT, PROTEIN, LACTOSE, SOMATIC CELL COUNT AND UREA IN MILK BY DIELECTRIC SPECTROSCOPY BETWEEN 0.3 MHZ AND 1.4 GHZ USING CHEMOMETRIC EVALUATION
ONLINE DETERMINATION OF INTER ALIA FAT, PROTEIN, LACTOSE, SOMATIC CELL COUNT AND UREA IN MILK BY DIELECTRIC SPECTROSCOPY BETWEEN 0.3 MHZ AND 1.4 GHZ USING CHEMOMETRIC EVALUATION
A method for determining a concentration of at least one component of milk includes measuring impedance values between two electrodes associated with a cell containing a milk sample at each of at least three frequencies, and estimating a concentration of the at least one component from a polynomial expression in which the impedance values at the at least three frequencies are variables. A system for determining a concentration of at least one component of milk includes a sampling cell including a milk sample, electrodes operative to electrify the milk sample with excitation signals at a plurality of frequencies including at least three frequencies, a signal generator for generating the excitation signals, circuitry for determining a relationship between an amplitude and phase of reflected and incident signals obtained from the signal generator, and a processor that receives the relative amplitude and phase and estimates a concentration of at least one component of milk based on a polynomial expression relating measured impedance values at a plurality of frequencies to concentrations of at least one component of milk.
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