Synchrotron infrared spectral regions as signatures for foodborne bacterial typing

  • Ya-Di Wang
  • Xue-Ling LiEmail author
  • Jun Hu
  • Jun-Hong LüEmail author


Fourier-transform infrared (FTIR) spectroscopy has emerged as a viable alternative to biochemical and molecular biology techniques for bacterial typing with advantages such as short analysis time, low cost and laboratorial simplicity. In this study, synchrotron radiation-based FTIR (SR-FTIR) spectroscopy with higher spectral quality was successfully applied to type 16 foodborne pathogenic bacterial strains. Combined with principal component analysis (PCA) and hierarchical cluster analysis (HCA), we found that the specific spectral region 1300–1000 cm−1, which reflects the information of phosphate compounds and polysaccharides, can be used as the signature region to cluster the strains into groups similar with genetic taxonomic method. These findings demonstrated that FTIR spectra combined with HCA have a great potential in quickly typing bacteria depending on their biochemical signatures.


Synchrotron radiation FTIR Spectral signature Bacterial typing PCA HCA 



We thank the staff from BL01B beamline of National Center for Protein Science Shanghai (NCPSS) at Shanghai Synchrotron Radiation Facility, for assistance during data collection.

Supplementary material

41365_2019_554_MOESM1_ESM.docx (874 kb)
Supplementary material 1 (DOCX 873 kb)


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Copyright information

© China Science Publishing & Media Ltd. (Science Press), Shanghai Institute of Applied Physics, the Chinese Academy of Sciences, Chinese Nuclear Society and Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Division of Physical Biology and CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied PhysicsChinese Academy of Sciences (CAS)ShanghaiChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.Shanghai Center for Bioinformation TechnologyShanghai Industrial Technology InstituteShanghaiChina

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