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Figure 3 | Biotechnology for Biofuels

Figure 3

From: High-throughput prediction of eucalypt lignin syringyl/guaiacyl content using multivariate analysis: a comparison between mid-infrared, near-infrared, and Raman spectroscopies for model development

Figure 3

Comparison of raw and pretreated Raman spectral data. Raman spectra of Acacia microbotrya (green), Corymbia hybrid (blue), and Eucalyptus globulus subspecies maidenii (red). The upper panel (A) shows the untreated spectral data, while the middle (B) and bottom (C) panels show the second derivative, and second derivative‚ÄČ+‚ÄČstandard normal variate (SNV) spectral transformations, respectively. The x-axis is in wavenumbers, while the y-axis shows the Raman intensity.

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