Fig. 3From: Structural changes in lignocellulosic biomass during activation with ionic liquids comprising 3-methylimidazolium cations and carboxylate anionsPrincipal component analysis (PCA) on selected [EMIM][CH3COO] and [AMIM][HCOO]-activated hybrid poplar. Principal component analysis (PCA) scores’ plot of IL-activated hybrid poplar compared to untreated HP control (a). PCA loadings plot for PC1 (b)Back to article page