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| Effects of surfactants on promotion of straw degradation by Penicillium oxalicum |
| Received:December 15, 2021 |
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| KeyWord:surfactant;straw;degradation;Penicillium oxalicum |
| Author Name | Affiliation | E-mail | | WAN Wen | College of Resources and Environmental Science, Nanjing Agricultural University, Jiangsu Provincial Key Lab of Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Waste Resource Utilization, Educational Ministry Engineering Center of Resource-saving fertilizers, National Engineering Research Center for Organic-based Fertilizers, Nanjing 210095, China | | | YANG Tianjie | College of Resources and Environmental Science, Nanjing Agricultural University, Jiangsu Provincial Key Lab of Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Waste Resource Utilization, Educational Ministry Engineering Center of Resource-saving fertilizers, National Engineering Research Center for Organic-based Fertilizers, Nanjing 210095, China | | | FAN Xiaoteng | College of Resources and Environmental Science, Nanjing Agricultural University, Jiangsu Provincial Key Lab of Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Waste Resource Utilization, Educational Ministry Engineering Center of Resource-saving fertilizers, National Engineering Research Center for Organic-based Fertilizers, Nanjing 210095, China
Henan Normal University, Xinxiang 453000, China | | | ZHENG Haiping | College of Resources and Environmental Science, Nanjing Agricultural University, Jiangsu Provincial Key Lab of Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Waste Resource Utilization, Educational Ministry Engineering Center of Resource-saving fertilizers, National Engineering Research Center for Organic-based Fertilizers, Nanjing 210095, China | | | WANG Shimei | College of Resources and Environmental Science, Nanjing Agricultural University, Jiangsu Provincial Key Lab of Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Waste Resource Utilization, Educational Ministry Engineering Center of Resource-saving fertilizers, National Engineering Research Center for Organic-based Fertilizers, Nanjing 210095, China | | | WEI Zhong | College of Resources and Environmental Science, Nanjing Agricultural University, Jiangsu Provincial Key Lab of Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Waste Resource Utilization, Educational Ministry Engineering Center of Resource-saving fertilizers, National Engineering Research Center for Organic-based Fertilizers, Nanjing 210095, China | | | XU Yangchun | College of Resources and Environmental Science, Nanjing Agricultural University, Jiangsu Provincial Key Lab of Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Waste Resource Utilization, Educational Ministry Engineering Center of Resource-saving fertilizers, National Engineering Research Center for Organic-based Fertilizers, Nanjing 210095, China | ycxu@njau.edu.cn | | SHEN Qirong | College of Resources and Environmental Science, Nanjing Agricultural University, Jiangsu Provincial Key Lab of Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Waste Resource Utilization, Educational Ministry Engineering Center of Resource-saving fertilizers, National Engineering Research Center for Organic-based Fertilizers, Nanjing 210095, China | |
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| Abstract: |
| In order to improve degradation efficiency, effects of different types of surfactants on straw degradation by straw-degrading bacteria were explored and the best surfactant were screened out. We first isolated a strain, Penicillium oxalicum Z7-6, with strong ability of degrade corn straw. Under liquid fermentation, effects of four surfactants (with two concentrations) on the degradation of corn straw by P. oxalicum Z7-6 and the production of cellulosic enzymes were investigated. Finally, the effects of the surfactants were verified by solid fermentation. The isolated P. oxalicum Z7-6 could degrade corn straw with high efficiency at a relative degradation rate of 40.58%. Under liquid fermentation condition, the relative degradation rate of straw was higher after treated with surfactants at a concentration of 0.1%. Both 0.1% Triton X-100 (TR) and 0.1% Tween 80 (TW) could significantly promote degradation of corn straw by P. oxalicum Z7-6, and there was no significant differences between the effects of these two treatments. Activities of filter paper enzyme and carboxymethyl cellulase were significantly higher under 0.1% TR compared with other treatments. Under solid fermentation, straw degradation was significantly higher under 0.1% TR compared with other treatments. Thus, the results for straw degradation and enzyme activities show that 0.1% TR has the strongest promotion effect on the degradation of straw by P. oxalicum Z7-6 and cellulosic enzyme activities. |
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