Comparison of γ-irradiation with other pretreatments followed with simultaneous saccharification and fermentation on bioconversion of microcrystalline cellulose for bioethanol production
Comparison of γ-irradiation with other pretreatments followed with simultaneous saccharification and fermentation on bioconversion of microcrystalline cellulose for bioethanol production
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DOI：
10.1016/j.biortech.2015.02.009
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发表时间：
2015-04-01
影响因子：
11.4
通讯作者：
Su, Xiaojun
中科院分区：
文献类型：
--
作者：
Liu, Yun;Zhou, Hua;Su, Xiaojun
比较了伽玛射线预处理与其他预处理方法（包括离子液体（IL）、1％HCl、1％H2SO4、酸性水IL（AA-IL））对微晶纤维素（MCC）用于生物乙醇生产的生物转化效率的影响。首先根据辐照衍生化合物和 MCC 结构的变化以及酵母生长曲线和生物乙醇产量评估 MCC 预处理后同步糖化发酵 (SSF) 的效率。结果表明，适当的辐照剂量（我们的工作中使用891 kGy）可以消除有毒辐照衍生化合物对SSF乙醇生物转化的负面影响，产率为67%。 SEM、FT-IR、还原糖和生物乙醇收率分析表明，MCC预处理效率近似为辐照预处理>AA-ILs预处理>1%HCl预处理>1%H2SO4预处理。 (c) 2015 Elsevier Ltd. 保留所有权利。
The effect of gamma-irradiation pretreatment was compared with other pretreatment methods including ionic liquids (ILs), 1% HCl, 1% H2SO4, acidic aqueous Ils (AA-ILs), on the bioconversion efficiency of microcrystalline cellulose (MCC) for bioethanol production. The efficiency of MCC pretreatment followed with simultaneous saccharification and fermentation (SSF) was firstly evaluated according to the variations of the irradiation-derived compounds and structure of MCC, as well as yeast growth curve and bioethanol yield. Results showed that the appropriate irradiation dose (891 kGy used in our work) could eliminate the negative effect of toxic irradiation-derived compounds on SSF for ethanol bioconversion with the yield value of 67%. Analyses of SEM, FT-IR, reducing sugar and bioethanol yield showed that the efficiency of pretreatment on MCC was ILs approximate to irradiation pretreatment > AA-ILs pretreatment > 1% HCl pretreatment > 1% H2SO4 pretreatment. (c) 2015 Elsevier Ltd. All rights reserved.