慈竹浆打浆复合酶制剂的制备及其对打浆性能的研究OA

To address the issues of high beating energy consumption and poor beating performance in the pulping process of Neosinocal-amus(N.)affinis,this study focused on the research of composite enzyme preparations for enzymatic beating process of N.affinis chemi-mechanical pulp and chemical pulp,aiming to enhance the beating performance and reduce beating energy consumption.Ultimately,composite enzyme suitable for N.affinis chemimechamical pulp and chemical pulp were developed.The composite enzyme for chemime-chanical pulp consisted of 20 U/g xylanase,35 U/g mannanase,and 10 U/g lytic polysaccharide monooxygenase(LPMO),while that for chemical pulp consisted of 20 U/g xylanase,20 U/g ferulic acid esterase,and 4 U/g LPMO.After treatment with the composite enzyme,the beating degree of N.affinis chemimechanical pulp and chemical pulp increased by 16.0%and 11.9%,respectively,and the beating energy consumption decreased by 26.1%and 20.6%,respectively.Furthermore,the tensile index and burst index of paper made from N.affinis chemimechanical pulp and chemical pulp were significant-ly improved,specifically,the tensile index and burst index of chemimechanical pulp paper increased by 20.9%and 13.6%,re-spectively,while those of chemical pulp paper increased by 5.7%and 1.3%,respectively.It was found that the kink index,water re-tention value,and fibrillation degree of N.affinis fibers increased af-ter enzyme treatment.