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Results showed that, compare with the control pulp, the brightness and lightness (<jats:inline-formula id=\"j_npprj-2020-0089_ineq_001\">\n                     <jats:alternatives>\n                        <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/j_npprj-2020-0089_ineq_001.png\"\/>\n                        <m:math xmlns:m=\"http:\/\/www.w3.org\/1998\/Math\/MathML\">\n                           <m:msup>\n                              <m:mrow>\n                                 <m:mi mathvariant=\"italic\">L<\/m:mi>\n                              <\/m:mrow>\n                              <m:mrow>\n                                 <m:mo>\u2217<\/m:mo>\n                              <\/m:mrow>\n                           <\/m:msup>\n                        <\/m:math>\n                        <jats:tex-math>{L^{\\ast }}<\/jats:tex-math>\n                     <\/jats:alternatives>\n                  <\/jats:inline-formula>) of hydrogen peroxide bleached pulp after X-MLac\/Glu pretreatment increased by 5.86\u2009% ISO and 3.58\u2009%, respectively. FQA analysis revealed that coarseness and fine fiber content increased slightly. The content of carboxyl groups and water retention value increased remarkably by 31.11\u2009% and 39.22\u2009%, respectively. The paper physical analysis showed that the paper strength properties have improved significantly. The crystallinity of cellulose decreased by 3.82\u2009% due to X-MLac\/Glu pretreatment. ATR-IR analysis indicated some non-cellulose components are removed. The BJH average pore size and BET specific surface area increased after enzyme pretreatment. The SEM analysis showed that through X-MLac\/Glu treatment the fiber surface becomes rough and the connections between the fibers become tighter, more fibrils appeared.<\/jats:p>","DOI":"10.1515\/npprj-2020-0089","type":"journal-article","created":{"date-parts":[[2021,2,19]],"date-time":"2021-02-19T10:41:22Z","timestamp":1613731282000},"page":"21-32","source":"Crossref","is-referenced-by-count":3,"title":["Characterization of fibers after xylanase and modified laccase-glutamate system biobleaching of old newsprint pulp"],"prefix":"10.1515","volume":"36","author":[{"given":"Guozheng","family":"Chen","sequence":"first","affiliation":[{"name":"School of Light Industry and Engineering , 26467 South China University of Technology , Guangzhou , China"},{"name":"State Key Laboratory of Pulp and Paper Engineering , 26467 South China University of Technology , Guangzhou , China"},{"name":"Guang Dong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center , Guangzhou , China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jinquan","family":"Wan","sequence":"additional","affiliation":[{"name":"School of Light Industry and Engineering , 26467 South China University of Technology , Guangzhou , China"},{"name":"State Key Laboratory of Pulp and Paper Engineering , 26467 South China University of Technology , Guangzhou , China"},{"name":"Guang Dong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center , Guangzhou , China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yongwen","family":"Ma","sequence":"additional","affiliation":[{"name":"School of Light Industry and Engineering , 26467 South China University of Technology , Guangzhou , China"},{"name":"State Key Laboratory of Pulp and Paper Engineering , 26467 South China University of Technology , Guangzhou , China"},{"name":"Guang Dong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center , Guangzhou , China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yan","family":"Wang","sequence":"additional","affiliation":[{"name":"Guang Dong Plant Fiber High-Valued Cleaning Utilization Engineering Technology Research Center , Guangzhou , China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","published-online":{"date-parts":[[2021,2,18]]},"reference":[{"key":"2023040100561668289_j_npprj-2020-0089_ref_001","doi-asserted-by":"crossref","unstructured":"Abbasi, T., Abbasi, S.A. 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