Carbohydrate stabilization with anthraquinone during alkaline pulping |
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Authors: | Lars Löwendahl Olof Samuelson |
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Affiliation: | (1) Department of Engineering Chemistry Fack, Chalmers University of Technology, 402 20 Gothenburg, Sweden |
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Abstract: | Summary Treatment of wood meal with aqueous alkali in the presence of anthraquinone at 80°C leads to a conversion of reducing hexose end groups in the polysaccharides to mannonic and gluconic acid end groups. Xylose end groups are oxidized to xylonic and lyxonic acid groups. This leads to a stabilization of the polysaccharides against endwise alkaline degradation. |
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