Summary
International Symposium on Electromagnetic Compatibility
2009
Session Number:21R1
Session:
Number:21R1-4
Dispersion Properties of Red Wine Based on Cole-Cole Plot
K. Watanabe,
pp.53-56
Publication Date:2009/7/20
Online ISSN:2188-5079
Summary:
To evaluate the quality of red wine, we previously measured the complex relative permittivity of red wine in the frequency range from 10 MHz to 6 GHz with a network analyzer, and showed that the maturity and alcohol concentration of red wine should simultaneously be estimated from the dispersion parameters of Cole-Cole plot consisting of a semicircle at frequencies above 1 GHz and straight line at frequencies lower than 1 GHz , respectively, while the mechanism was not clarified. In this study, to investigate the dispersion properties of red wine based on Cole-Cole plot, we measured the complex relative permittivity from 100 MHz to 40 GHz before/after the distillation, and compared their Cole-Cole plots to reveal that the semicircle and straight line come from the dispersion for the water solution of alcohol and residue peculiar to ingredient of red wine, respectively.