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Figure 4 | BMC Biophysics

Figure 4

From: Detection and differentiation of bacterial spores in a mineral matrix by Fourier transform infrared spectroscopy (FTIR) and chemometrical data treatment

Figure 4

Multiscaling principal component analysis (PCA) of spores of Bacillus megaterium in the presence of the clay mineral bentonite at different spore/bentonite (wt/wt) ratios. "B mega": Bacillus megaterium without bentonite; "bentonite": pure bentonite without spores. Second derivatives of original spectra were truncated (750 - 1800 cm-1) and used for PCA. Five independent replicates per sample were measured. Drop lines are given for the PC1/PC2 plane.

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