期刊
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
卷 50, 期 8, 页码 814-819出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10826068.2020.1744007
关键词
Bioethanol; biomass; pretreatment; rice straw; saccharomyces
类别
资金
- World Academy of Sciences (TWAS) [22/FF/CSIR-TWAS/2017]
- Council of Scientific and Industrial Research (CSIR) [22/FF/CSIR-TWAS/2017]
Mild alkaline pretreatment was evaluated as a strategy for effective lignin removal and hydrolysis of rice straw. The pretreatment efficiency of different NaOH concentrations (0.5, 1.0, 1.5 or 2.0% w/w) was assessed. Rice straw (RS) pretreated with 1.5% NaOH achieved better sugar yield compared to other concentrations used. A cellulose conversion efficiency of 91% (45.84 mg/ml glucose release) was attained from 1.5% NaOH pretreated rice straw (PRS), whereas 1% NaOH pretreated rice straw yielded 35.10 mg/ml of glucose corresponding to a cellulose conversion efficiency of 73.81%. The ethanol production from 1% and 1.5% NaOH pretreated RS hydrolysates was similar at similar to 3.3% (w/v), corresponding to a fermentation efficiency of 86%. The non-detoxified hydrolysate was fermented using the novel yeast strain Saccharomyces cerevisiae RPP-03O without any additional supplementation of nutrients.
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