关键词: 电化学, 阻抗法, 介电常数

Abstract: Since Stewart proposed to detect microorganisms by electrochemical method in 1898, the electrochemical method had been developed as a method for rapid detection of microorganisms. Electrochemical method can be divided into impedance and dielectric constant method according to the different parameters. Impedance method is mainly used in food industry, especially the detection of perishable food before corruption. The dielectric constant is used to detect the number of microorganisms in bio-fermentation process, which can achieve real-time monitoring and controlling the process. Because of its rapid and antomated character, there is broad application prospect for electrochemical method.

Key words: electrochemical, impedance, dielectric constant