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SUPPLEMENTARY MATERIAL Spatially resolved spectral determination of polysaccharides in hydrothermally carbonized biomass Mikko Mäkelä a,b *, Maurizio Volpe c , Roberto Volpe d , Luca Fiori c , Olli Dahl a a Aalto University, School of Chemical Engineering, Department of Bioproducts and Biosystems, PO Box 16300, 00076 Aalto, Finland b Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology, Skogsmarksgränd, 90183 Umeå, Sweden c University of Trento, Department of Civil, Environmental and Mechanical Engineering, via Mesiano 77, 38123 Trento, Italy d Queen Mary University of London, School of Engineering and Materials Science, Mile End Road, London E1 4NS, United Kingdom *corresponding author, Tel: +358 50 598 0361 Emails: [email protected], [email protected] (M. Mäkelä) Electronic Supplementary Material (ESI) for Green Chemistry. This journal is © The Royal Society of Chemistry 2018

hydrothermally carbonized biomass Spatially resolved ... · SUPPLEMENTARY MATERIAL Spatially resolved spectral determination of polysaccharides in hydrothermally carbonized biomass

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Page 1: hydrothermally carbonized biomass Spatially resolved ... · SUPPLEMENTARY MATERIAL Spatially resolved spectral determination of polysaccharides in hydrothermally carbonized biomass

SUPPLEMENTARY MATERIAL

Spatially resolved spectral determination of polysaccharides in

hydrothermally carbonized biomass

Mikko Mäkeläa,b*, Maurizio Volpec, Roberto Volped, Luca Fioric, Olli Dahla

aAalto University, School of Chemical Engineering, Department of Bioproducts and

Biosystems, PO Box 16300, 00076 Aalto, Finland

bSwedish University of Agricultural Sciences, Department of Forest Biomaterials and

Technology, Skogsmarksgränd, 90183 Umeå, Sweden

cUniversity of Trento, Department of Civil, Environmental and Mechanical Engineering, via

Mesiano 77, 38123 Trento, Italy

dQueen Mary University of London, School of Engineering and Materials Science, Mile End

Road, London E1 4NS, United Kingdom

*corresponding author, Tel: +358 50 598 0361

Emails: [email protected], [email protected] (M. Mäkelä)

Electronic Supplementary Material (ESI) for Green Chemistry.This journal is © The Royal Society of Chemistry 2018

Page 2: hydrothermally carbonized biomass Spatially resolved ... · SUPPLEMENTARY MATERIAL Spatially resolved spectral determination of polysaccharides in hydrothermally carbonized biomass

SUPPLEMENTARY MATERIAL

Fig. A.1: Hydrothermally carbonized olive mill residues in spectrograph sample holders under

the hyperspectral camera.

Fig. A.2: A false color image of the olive mill trimmings hypercube. The RGB image was

generated by selecting specific wavelengths as red (1345 nm), green (1749 nm) and blue

(2152 nm). The contrast of the image was enhanced.

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Page 3: hydrothermally carbonized biomass Spatially resolved ... · SUPPLEMENTARY MATERIAL Spatially resolved spectral determination of polysaccharides in hydrothermally carbonized biomass

SUPPLEMENTARY MATERIAL

Fig. A.3: A score image of the first principal component (88%) based on PCA.

Fig. A.4: A score image of the second principal component (10%) based on PCA.

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Page 4: hydrothermally carbonized biomass Spatially resolved ... · SUPPLEMENTARY MATERIAL Spatially resolved spectral determination of polysaccharides in hydrothermally carbonized biomass

SUPPLEMENTARY MATERIAL

Fig. A.5: A score image of the third principal component (0.6%) based on PCA.

Fig. A.6: A score image of the fourth principal component (0.4%) based on PCA.

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