Shi-jie LIU, Yao-di ZHU, Miao-yun LI, Gai-ming ZHAO, Li-jun ZHAO, Yang-yang MA, Na WANG. Raman Spectroscopic Characteristic Structure Analysis and Rapid Identification of Food-Borne Pathogen Spores Based on SERS Technology[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2774
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 9, 2774 (2022)
Fig. 1. Phase-contrast microscopic image of three food-borne pathogenic bacteria spores
Fig. 2. UV-Vis absorption spectrum (a), particle size distribution (b) and TEM image (c) of AgNPs
Fig. 3. SERS enhancement effect of AgNPs on three food-borne pathogenic bacteria spores
Fig. 4. SERS average fingerprints of three food-borne pathogenic bacteria spores
Fig. 5. Repeatability test of SERS spectra of three food-borne pathogenic bacteria spores
Fig. 6. Two-dimensional scatter plot of principal component analysis (PCA) of SERS maps of spores of three food-borne pathogens
Fig. 7. HCA resulting dendrogram of SERS maps of spores of three food-borne pathogens
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Table 1. Tentative attribution of Raman shift of SERS spectra of three food-borne pathogenic bacteria spores
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Table 2. Comparison of six characteristic peaks of Ca2+-DPA in SERS spectra of three spores
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