Chinese Journal of Quantum Electronics

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The Research Progress about Microbial Monitoring(Growth) based on TDLAS Technology

1Fu Meijuan, 2Zhang Yibiao,1Huang Yuqian, 1*Shao Jie   

  1. 1Institute of Information Optics, Zhejiang Normal University,Jinhua, Zhejiang, 321004,China 2Zhejiang Jinhua Guangfu Hospital, Jinhua, Zhejiang, 321000, China
  • Published:2019-03-28 Online:2019-03-20

Abstract: Microbial monitoring plays a key role in a wide range of fields spanning from medical diagnosis and food safety to fermentation and microbiological research. Microbial monitoring mainly include two aspects: the judgment of microorganisms and the measurement of the growth curve of microorganisms. Microbial growth usually correlate directly with certain indicators, such as DNA, pH, CO2 and OD, which provide a way for microbial monitoring. Among them, CO2 measurements have become the preferred approach because they prevent the interference of the dead bacteria and provide a more rapid and automatic answer. TDLAS technology has demonstrated high sensitivity, while being a simple yet mature technological structure for the detection of CO2 to provide a rapid and non-intrusive technique for microbial monitoring. It is of great significance to promote a new approach for monitor microorganisms. TDLAS technology has made great progress in the field of microbial monitoring in recent years.

Key words: spectroscopy, Tunable Diode Laser Absorption Spectroscopy technology, microbial monitoring, blood culture, CO2 detection