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. 2012 Feb 16;7(2):e32344. doi: 10.1371/journal.pone.0032344

Figure 5. Relative prediction errors of the different FT-IR PG parameters.

Figure 5

A) Integrated area of carbohydrate region (984–1140 cm−1) (mean error: ±35.9%). B) Integrated area of carbohydrate region normalized with amide I (1584–1720 cm−1) (mean error: ±107.8%). C) Intensity of 2nd derivative peak located at 1062 cm−1 (mean error: ±33.0%). D) Intensity of 2nd derivative peak located at 1374 cm−1 (mean error: ±20.6%). E) PLSR model (mean error: ±10.7%). F) PCR model (mean error: ±16.9%). Note that plot B has a different scale on y axis.