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| The Change of Lignin Molecular Weight of Aspen Alkaline Peroxide Mechanical Pulp Treated by Laccase and Laccase/Mediator |
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| DOI：10.11981/j.issn.1000-6842.2011.03.5 |
| Key Words:lignin; molecular weigh distributions; laccase; laccase-mediator-system; APMP |
| Fund Project:本课题得到国家自然科学基金项目（30972326；31070525）和山东自然科学基金项目（ZR2010CM065）的资助。 |
| Author Name | Affiliation | | 崔红艳1 | 1.山东轻工业学院制浆造纸工程省级重点学科，山东济南，250353 | | 刘 玉1,2,3 | 1.山东轻工业学院制浆造纸工程省级重点学科，山东济南，250353；2.山东大学微生物技术国家重点实验室，山东济南，250100；3.美国北卡罗来纳州立大学木材与造纸科学系，美国罗利，NC 27695-8005 | | 杨桂花1 | 1.山东轻工业学院制浆造纸工程省级重点学科，山东济南，250353 | | 王 娟1 | 1.山东轻工业学院制浆造纸工程省级重点学科，山东济南，250353 | | Lucian A. Lucia3 | 3.美国北卡罗来纳州立大学木材与造纸科学系，美国罗利，NC 27695-8005 |
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| Abstract: |
| The alkaline peroxide mechanical pulps (APMP) of Triploid of Populus Tomentosa was treated by laccase and laccase-mediator-system (LMS) respectively, the factors affecting physical properties of the pulp were studied. The two-stage method of enzyme-mild acidic hydrolysis was adopted to isolate lignin from the APMP and the modified pulp samples. All the benzoylated lignin samples were dissolved in THF. The molecular weight distributions of lignins were obtained through GPC, the relative number average molecular weight and relative weight average molecular weight were figured out, and the differences of the effects of laccase and LMS treatments were compared. |
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