Rice Straws With Different Cell Wall Components Differ on Abilities of Saccharification

Frontiers in Bioengineering and Biotechnology

Ai-Min Wu¹  Mirza Faisal Qaseem¹  Chen Chen¹  Shuai Zhao³  Yangsheng Li⁵  Weilong Kong⁵  Xiaoxiao Deng⁵ 

[1] Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architectures, South China Agricultural University, Guangzhou, China;Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, China;State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Research Center for Microbial and Enzyme Engineering Technology, College of Life Science and Technology, Guangxi University, Nanning, China;State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China;State Key Laboratory for Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China;

关键词: cell wall;    glucose yield;    pretreatment;    indica;    japonica;   

DOI  :  10.3389/fbioe.2020.624314

来源: DOAJ

【 摘 要 】

Rice straw has an enormous amount of biomass for energy use, but the complexity of the cell wall component hinders technical processes. Although belonging to rice straws, the straws from different varieties should be with different treatment strategies to obtain best energy efficiency. To confirm this hypothesis, 7 different rice varieties (RPY GENG, RIL269, RIL272, RIL31, RIL57, RIL06, LUOHUI 9) with different cell wall traits from RIL population were evaluated for their response toward different pretreatments. For japonica RPY GENG, 2% of H2SO4 acid was best pre-treatment while high acid (5% of H2SO4) pretreatment caused undue loss. For Indica LUOHUI 9 rice, high acid pretreatment was suitable, while RIL57 had maximum of glucose yield with high alkali (10% NaOH) pretreatment. High-concentration alkali pretreatment is the most convenient and effective pretreatment method for the treatment of unknown varieties of rice straws, because the lignin has been removed and has the lowest negative effects on the glucose yield under the high alkali condition. As the RILs used in this study vary considerably in their wall structure, an understanding of their response to different pre-treatments confirms our hypothesis and help us to understand the influence of different wall compositions on the final output.

【 授权许可】

Unknown