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Spatially resolved spectral determination of polysaccharides in hydrothermally carbonized biomass

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Abstract

Reliable information on the decomposition of polysaccharides is important to evaluate the evolution and properties of hydrothermally carbonized chars. Hyperspectral imaging offers a quick and robust alternative to expensive and time-consuming laboratory methods to determine the polysaccharide contents of biomass and biomass-derived chars. Here, we show that the decomposition of hemicellulose and cellulose were visible in the acquired hyperspectral images even without image calibration. Image regression based on sample holocellulose, glucan and the sum of xylan, galactan, arabinan and mannan provided good calibration models and enabled visualizing the decomposition of polysaccharides based on carbonization temperature. Hyperspectral imaging thus provides a non-destructive alternative to traditional polysaccharide analyses of hydrochars for laboratory and potential future industrial applications.

Graphical abstract: Spatially resolved spectral determination of polysaccharides in hydrothermally carbonized biomass

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Publication details

The article was received on 06 Dec 2017, accepted on 07 Feb 2018 and first published on 07 Feb 2018


Article type: Paper
DOI: 10.1039/C7GC03676K
Citation: Green Chem., 2018, Advance Article
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    Spatially resolved spectral determination of polysaccharides in hydrothermally carbonized biomass

    M. Mäkelä, M. Volpe, R. Volpe, L. Fiori and O. Dahl, Green Chem., 2018, Advance Article , DOI: 10.1039/C7GC03676K

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