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首页> 外文期刊>Fuel >Bioethanol production from the comparison between optimization of sorghum stalk and sugarcane leaf for sugar production by chemical pretreatment and enzymatic degradation
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Bioethanol production from the comparison between optimization of sorghum stalk and sugarcane leaf for sugar production by chemical pretreatment and enzymatic degradation

机译：通过化学预处理和酶促降解的高粱茎秆和甘蔗叶优化与甘蔗叶的优化比较的生物乙醇生产

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摘要

This work reports the comparison of optimized pretreatment models on total sugar (TS) production from sugarcane leaf (SL) with sorghum stalk (SS) utilization to decompose the lignocellulosic biomass into oligosaccharide (OS). The accumulation variables were examined in the pretreatment model, including pretreatment time (1-3 days), concentrations of sodium hydroxide (NaOH) from 1 to 2% (w/v), and heating temperatures from 30 to 40 degrees C. TS productions were optimized by using response surface methodology (RSM) on central composite design (CCD) models. These models indicated excellent determination coefficients (R-2) ranged from 0.9820 to 0.9900 and are significant. Process optimization showed that the highest TS yield was achieved of 32.612 g/L and 38.977 g/L for NaOH pretreatment at condition (2)% (w/v) NaOH at the temperature of 40 degrees C for 3 days. After pretreatment, the biomass was degraded using a cellulase enzyme to form the fermentable sugar for ethanol production by Saccharomyces cerevisiae TISTR5020. The maximum bioethanol yield of 8.374 +/- 1.813 g/L was achieved at 2 days of fermentation time when compared with bioethanol yield (5.234 +/- 0.907 g/L) of 4 days fermentation time.
机译：这项工作报告了甘蔗叶（SL）的总糖（TS）生产优化预处理模型的比较，具有高粱茎（SS）利用，将木质纤维素生物质分解成低聚糖（OS）。在预处理模型中检查累积变量，包括预处理时间（1-3天），氢氧化钠（NaOH）的浓度为1-2％（w / v），并从30至40℃的加热温度从30℃加热通过在中央复合设计（CCD）模型上使用响应表面方法（RSM）进行了优化。这些模型指示优异的确定系数（R-2）范围为0.9820至0.9900，并且是显着的。方法优化表明，在40℃的温度下，在40℃的温度下，在条件（2）％（w / v）NaOH下，获得32.612g / L和38.977g / l的最高TS产量。在预处理后，使用纤维素酶降解生物质以形成通过酿酒酵母TISTR5020的乙醇产生的可发酵糖。与生物乙醇产率（5.234 +/- 0.907g / L）相比，在2天发酵时间的2天内，在发酵时间的2天内实现了8.374 +/- 1.813g / L的最大生物乙醇产率。

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