Fractionation of sugar beet pulp polysaccharides into component sugars and pre-feasibility analysis for further valorisation
نویسندگان
چکیده
Abstract Sugar beet pulp (SBP) is a by-product formed in large amounts during the production of refined sugar and currently used as low-cost feed for livestock. The dry SBP comprises largely three polysaccharides (75–85%), cellulose, hemicellulose pectin, whose component sugars constitute potential valuable feedstock producing building blocks chemicals materials. In present study, simple integrated process fractionation into streams enriched with corresponding developed. Initial screening several pectinase preparations (from Novozymes) treatment (at initial pH 4.0, 50 °C) showed Pectinase ME to release maximum amount galacturonic acid (GalU) along high arabinose (Ara). On other hand, subjecting hydrolysis using 0.64 M sulphuric at 80 °C was relatively selective solubilising mainly Ara (71.3% content), subsequent solubilised 68.5% GalU content. Treatment residual solid fraction cellulases released 81.9% original glucose Size-exclusion chromatography revealed presence oligomers ranging from dimers pentamers hydrolysates. Mass-balance based analysis 1000 kg /h biorefinery three-stage further valorization arabitol, mucic levulinic acid, respectively, indicated economic feasibility value addition SBP, which sold 200 US$/t animal feed. Recycling water catalysts would be important reducing waste generation improving environmental performance.
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ژورنال
عنوان ژورنال: Biomass Conversion and Biorefinery
سال: 2022
ISSN: ['2190-6823', '2190-6815']
DOI: https://doi.org/10.1007/s13399-022-02699-4