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UV–visible diffuse reflectance spectroscopy used in analysis of lignocellulosic biomass material

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Abstract

Because of the wide adaptability to samples in various states, UV–vis diffuse reflectance spectroscopy has attracted increasing attention. In the present work, it was firstly used to analyze lignocellulosic biomass material and develop the possible use for rapid detection. Through the analysis of the spectra, it was observed that the extremely pure microcrystalline cellulose, filter paper and purchased xylan have almost no absorption, whereas the chemical pulps, dissolving pulps and extracted hemicellulose with residual trace impurities show a weak absorption in the range from 200 nm to 400 nm. The prominent sensitivity to the trace impurities, such as residual lignin, makes the UV–vis diffuse reflectance spectroscopy a potential tool for the rapid detection of the purity of cellulose and hemicellulose. As for lignin, the spectrum is characterized by a broader strong absorption at 250–280 nm and 280–350 nm, of which the latter is similar to UV absorption spectra. In addition, UV–vis diffuse reflectance spectroscopy can be potentially used in monitoring lignin-like substance formation in the biomass engineering.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (31770632) and innovation fund from Fujian Agriculture and Forestry University CXZX2017296 and CXZX2017037.

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Correspondence to Shilin Cao or Xiaojuan Ma.

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Zhang, H., Wang, X., Wang, J. et al. UV–visible diffuse reflectance spectroscopy used in analysis of lignocellulosic biomass material. Wood Sci Technol 54, 837–846 (2020). https://doi.org/10.1007/s00226-020-01199-w

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  • DOI: https://doi.org/10.1007/s00226-020-01199-w

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