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Inhibition Study of Secondary Starch Degradation During OCC Pulping Process
Received:October 27, 2022  
DOI:10.11980/j.issn.0254-508X.2023.04.004
Key Words:OCC  secondary starch  hydrolysis  amylase inhibitor  fungicide
Fund Project:国家自然科学基金(32101470);中国博士后科学基金(2022M712379;2021M692401);浙江景兴纸业股份有限公司校企合作项目。
Author NameAffiliationPostcode
GUO Jinhuan Tianjin Key Lab of Pulp and Paper Tianjin University of Science and Technology Tianjin 300457
State Key Lab of Biobased Fiber Manufacturing TechnologyTianjin University of Science and Technology Tianjin 300457
China Light Industry Key Lab of Papermaking and Biorefinery Tianjin University of Science and Technology Tianjin 300457 
300457
CHENG Zhengbai Zhejiang Jingxing Paper Joint Stock Co. Ltd. Pinghu Zhejiang Province 314214 314214
LIU Liqin Tianjin Key Lab of Pulp and Paper Tianjin University of Science and Technology Tianjin 300457
State Key Lab of Biobased Fiber Manufacturing TechnologyTianjin University of Science and Technology Tianjin 300457
China Light Industry Key Lab of Papermaking and Biorefinery Tianjin University of Science and Technology Tianjin 300457 
300457
XU Qingliang Zhejiang Jingxing Paper Joint Stock Co. Ltd. Pinghu Zhejiang Province 314214 314214
ZHANG Xiaohong Zhejiang Jingxing Paper Joint Stock Co. Ltd. Pinghu Zhejiang Province 314214 314214
CAO Haibing Zhejiang Jingxing Paper Joint Stock Co. Ltd. Pinghu Zhejiang Province 314214 314214
LIU Hongbin* Tianjin Key Lab of Pulp and Paper Tianjin University of Science and Technology Tianjin 300457
State Key Lab of Biobased Fiber Manufacturing TechnologyTianjin University of Science and Technology Tianjin 300457
China Light Industry Key Lab of Papermaking and Biorefinery Tianjin University of Science and Technology Tianjin 300457 
300457
AN Xingye Tianjin Key Lab of Pulp and Paper Tianjin University of Science and Technology Tianjin 300457
State Key Lab of Biobased Fiber Manufacturing TechnologyTianjin University of Science and Technology Tianjin 300457
China Light Industry Key Lab of Papermaking and Biorefinery Tianjin University of Science and Technology Tianjin 300457 
300457
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Abstract:The inhibitory effects of four metal ions (Cu2+, Zn2+, Mn2+, and Li+) on the degradation of secondary starch and their optimum addition amount were studied. The synergistic treatment with fungicides was applied to explore the inhibition issue of secondary starch degradation in the OCC pulping process. The results showed that Cu2+ had the bettter inhibitory effect. When the reaction time was 4 h and the addition amount of Cu2+ was 0.20 mol/t, the native starch was hardly degraded. When the reaction time was 4 h and the addition amount of Cu2+ was 0.024 mol/t, the enzymatic hydrolyzed starch degradation rate of 15.4% was lowest . When the fungicide and Cu2+ synergistically acted 4 h, compared with the fungicide adding separately, the inhibition effect of native starch was increased by 58.0%, the inhibition effect of enzymatic hydrolyzed starch was increased by 31.2%.
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