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Rapid differentiation and identification of five species of Salmonella by FT-IR spectroscopy
傅立叶变换红外光谱技术对5种沙门氏菌的快速分类鉴定

Keywords: Fourier transform infrared spectroscopy,Salmonella,PCA,HCA,differentiation,identification
傅立叶变换红外光谱
,沙门氏菌,主成分分析,分级聚类分析,分类,鉴定

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Abstract:

Objective] To establish a standard fourier transform infrared (FT-IR) spectral library and a FT-IR method of differentiation and identification of five species of Salmonella, viz Salmonella typhimurium, Salmonella enteritidis, Salmonella choleraesuis, Salmonella arizonae and Salmonella potsdam. Methods] FT-IR fingerprint absorption spectra of five species of Salmonella were collected and analyzed by chemometric methods. Results] A standard FT-IR spectral library was created and could be used to compare with those of the target Salmonella and identify them; two cluster models of principal component analysis (PCA) and hierarchical cluster analysis (HCA) were established and could differentiate and identify well the five species of Salmonella. Conclusion] As a rapid, easy-to-use and accurate technique, FT-IR spectroscopy is an effective tool to differentiate and identify five species of Salmonella studied here.

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