Comparison of gamma-irradiation with other pretreatments followed with simultaneous saccharification and fermentation on bioconversion of microcrystalline cellulose for bioethanol production
文献类型： 外文期刊
作者： Liu, Yun 1 ; Zhou, Hua 1 ; Wang, Shihui 1 ; Wang, Keqin 2 ; Su, Xiaojun 3 ;
作者机构： 1.Beijing Univ Chem Technol, Coll Life Sci & Technol, Beijing Key Lab Bioproc, Beijing 100029, Peoples R China
2.Hunan Collaborat Innovat Utilizat Bot Funct Ingre, Hunan Inst Nucl Agr Sci & Space Breeding, Changsha 410125, Hunan, Peoples R China
3.Hunan Agr Univ, Hunan Prov Key Lab Crop Germplasm Innovat & Utili, Changsha 410128, Hunan, Peoples R China
关键词： Microcrystalline cellulose (MCC);gamma-Irradiation pretreatment;Simultaneous saccharification and fermentation (SSF);Bioethanol
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）
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收录情况： SCI
摘要： 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.
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