Construction of a fungal consortium for effective degradation of rice straw lignin and potential application in bio-pulping

IF 8.2 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology Pub Date : 2022-01-01 Epub Date: 2021-11-02 DOI:10.1016/j.biortech.2021.126168

Jinghong Wang , Lingling Li , Hongmin Xu , Yali Zhang , Yuxin Liu , Fangzheng Zhang , Guinan Shen , Lei Yan , Weiwei Wang , Hongzhi Tang , Huajiao Qiu , Ji-Dong Gu , Weidong Wang

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引用次数: 15

Abstract

To improve the lignin degradation efficiency, we established a co-culture consortium (LDFC) consisting of Trametes hirsuta BYL-3, Trametes versicolor BYL-7 and Trametes hirsuta BYL-8. The testing results showed that the constructed consortium showed improved the lignin degradation rate by fungi. The optimal cultivation conditions were mixture at 1:1:1 vol ratio of each fungus, 7% (w/v) of inoculum amount, culture temperature at 26 °C, pH was 6.9 and 10 days of culturing time. Under these conditions, the degradation rate of lignin was 39.7%, which was 9.3% higher than those before optimization (30.4%). Using rice straw for treatment by LDFC to papermaking, the paper tensile strength was 8 N, and the ring pressure index was 2.46 N·m/g, which meets the standards for the production of corrugated paper for packaging. These results indicate that LDFC has potential application value to convert rice straw resources for bio-pulping to make papers.

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稻秆木质素有效降解菌群的构建及其在生物制浆中的应用

为了提高木质素的降解效率，我们建立了由毛曲霉BYL-3、花型曲霉BYL-7和毛曲霉BYL-8组成的共培养联合体(LDFC)。实验结果表明，构建的菌群对木质素的降解率明显提高。最佳培养条件为每种菌种体积比为1:1:1，接种量为7% (w/v)，培养温度为26℃，pH为6.9，培养时间为10 d。在此条件下，木质素的降解率为39.7%，比优化前的30.4%提高了9.3%。稻秆经LDFC处理后造纸，纸的抗拉强度为8 N，环压指数为2.46 N·m/g，满足生产包装用瓦楞纸的标准。研究结果表明，LDFC在利用秸秆资源进行生物制浆造纸方面具有潜在的应用价值。

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来源期刊

Bioresource Technology 工程技术-能源与燃料

CiteScore

20.80

自引率

19.30%

发文量

2013

审稿时长

12 days

期刊介绍： Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies. Topics include: • Biofuels: liquid and gaseous biofuels production, modeling and economics • Bioprocesses and bioproducts: biocatalysis and fermentations • Biomass and feedstocks utilization: bioconversion of agro-industrial residues • Environmental protection: biological waste treatment • Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.