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Fourier transform infrared spectra of raw and delignified pineapple leaf waste for Control (C) (A), and elevated temperature + elevated CO2 (eT+eC) (B). Pretreatment conditions: Laccase load of 228 U/g for C and 350 U/g for eT+eC, 0.84% (w/v) Vanillin and 54.2 °C for both groups.
