Enzymatic strategies to improve removal of hexenuronic acids and lignin from cellulosic fibers
作者： Cristina Valls , Teresa Vidal , M. Blanca Roncero
DOI: 10.1515/HF-2013-0033
关键词:
摘要: Different enzymatic strategies were applied to improve lignin and hexenuronic acid (HexA) removal. Three laccases (L) with different redox potentials in combination 1-hydroxybenzotriazole or methyl syringate softwood sulfite hardwood kraft fibers. The enzymes a high-redox potential from Pycnoporus cinnabarinus Trametes villosa found be the most efficient. bleaching efficiency was not significantly influenced by presence absence of HexA types lignocellulosic fibers.Subsequently, removal mediators evaluated eucalyptus fibers T. laccase (TvL). Natural removed only lignin, whereas combinations TvL synthetic both lignin. mediator violuric (VA) efficient as judged properties fiber effluent. A xylanase pretreatment stage boost access LVA system without affecting pulp
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