Yan-yan LIU, Ning-ping TAO, Xi-chang WANG, Ying LU, Chang-hua XU. Integrated Detection of Foodborne Pathogens by In-Situ Infrared Spectroscopy Based on ZnSe Film Transmission Method[J]. Spectroscopy and Spectral Analysis, 2021, 41(2): 419
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 2, 419 (2021)
Fig. 1. Diagram (including sample pretreatment) of ZnSe film transmission and KBr pressed pellet method
Fig. 2. Integrated infrared macroscopic fingerprint of four foodborne pathogens based on ZnSe film transmission method
Fig. 3. Comparison of IR spectra in four foodborne pathogens based on ZnSe film transmission and KBr pressed pellet method
(a):E. coli DH5α; (b): S. enteritidis CMCC 50041; (c): V. cholerae SH04; (d): S. aureus SH10
(a):
Fig. 4. SD-IR spectra of E. coli DH5α in the region of 4 000~600 cm-1
Fig. 5. Comparison of SD-IR comparison spectra in four foodborne pathogens based on ZnSe film transmission and KBr pressed pellet method (1 500~900 cm-1)
(a):E. coli DH5α; (b): S. enteritidis CMCC 50041; (c): V. cholerae SH04; (d): S. aureus SH10
(a):
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Table 1. Major spectral band assignments for Fourier transform infrared spectroscopy (FT-IR) of four foodborne pathogens
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Table 2. Comparison of characteristic peak in SD-IR spectra (1 500~900 cm-1) based on ZnSe film transmission and KBr pressed pellet method
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