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Enhancing enzymatic hydrolysis and fermentation efficiency of rice straw by pretreatment of sodium perborate

文献类型： 外文期刊

作者： Guo, Jia-Ming 1 ; Wang, Yu-Tao 2 ; Cheng, Jing-Rong 4 ; Zhu, Ming-Jun 1 ;

作者机构： 1.South China Univ Technol, Sch Biol & Biol Engn, Guangdong Prov Engn & Technol Res Ctr Biopharmace, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Peoples R China

2.Kashi Univ, Coll Life & Geog Sci, Kashi 844000, Peoples R China

3.Kashi Univ, Key Lab Biol Resources & Ecol Pamirs Plateau Xinj, Kashi 844000, Peoples R China

4.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Key Lab Funct Foods, Minist Agr,Guangdong Key Lab Agr Prod Proc, Guangzhou 510610, Peoples R China

关键词： Sodium perborate (SPB); Rice straw (RS); Enzymatic hydrolysis; Simultaneous saccharification and co-fermentation (SScF); Ethanol

期刊名称：BIOMASS CONVERSION AND BIOREFINERY （ 影响因子：4.987； 五年影响因子：4.151 ）

ISSN： 2190-6815

年卷期：

页码：

收录情况： SCI

摘要： In this study, we proposed a simple and effective sodium perborate (SPB) pretreatment method to enhance the enzymatic hydrolysis efficiency of rice straw (RS). The lignin removal rate reached 45.76% under the optimum pretreatment conditions of 8% SPB and 80 degrees C for 4 h, and the enzymatic hydrolysis efficiency of pretreated RS was 84% at a cellulase loading of 20 FPU/g RS. Through simultaneous saccharification and co-fermentation (SScF) of the pretreated RS solid with Saccharomyces cerevisiae SHY07-1, the maximum ethanol concentration was 15.29 g/L at 72 h, with a fermentation efficiency as high as 91.96%. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR) analyses revealed that the RS structure was destroyed by SPB pretreatment, and lignin was effectively removed. The overall data of this study indicate that SPB pretreatment is a promising method to improve enzymatic hydrolysis and bioethanol production from RS by inoculating Saccharomyces cerevisiae SHY07-1.

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