Research on Laccase Degumming of Kenaf Fiber

摘要

Recently laccase has become to be an attentive enzyme in paper industry and other industries. It catalyse the oxidation of ortho-and paradiphenols,aminophenols, aryl diamines, polyphenols, polyamines, lignin as well as some inorganic ions coupled to the reduction of molecular dioxygen to water, which can be enhanced by addition of redox mediators. Laccase-mediator systems are employed in different biotechnological processes. This work studies its application in kenaf degumming process. The effects of laccase alone and combination with xylanse and ABTS are studied. The effects on the properties of the degummed fiber such as fiber fineness, residual lignin content and tensile property are tested and analyzed by the designed experiments. On base of that, the reasonable processing parameters of laccase treatment are obtained. The results show that Laccase used in degumming of kenaf fiber is feasible, and it can be more effective by extending action time, adding ABTS as mediator and combination with xylanse.