Construction of a fungal consortium for effective degradation of rice straw lignin and potential application in bio-pulping. (January 2022)

• Record Type: Journal Article
• Authors: Wang, Jinghong; Li, Lingling; Xu, Hongmin; Zhang, Yali; Liu, Yuxin; Zhang, Fangzheng; Shen, Guinan; Yan, Lei; Wang, Weiwei; Tang, Hongzhi; Qiu, Huajiao; Gu, Ji-Dong; Wang, Weidong
• Is Part Of: Bioresource technology. Volume 344:Part B(2022)
• Publication Date: 2022-01
• Subjects: Fungal interaction -- Optimization -- Lignin degradation -- Bio-pulping; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2021.126168
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: A lignin degradation fungal co-cultured consortium was constructed. The consortium were consisted of three fungi. The consortium could degraded 39.7% rice straw lignin at 26 °C. It is feasible for the consortium to be used in bio-pulp paper-making. 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.