Comparison of gamma irradiation and steam explosion pretreatment for ethanol production from agricultural residues
文献类型： 外文期刊
作者： Wang, Ke-qin 1 ; Xiong, Xing-yao 2 ; Chen, Jing-ping 1 ; Chen, Liang 1 ; Su, Xiaojun 2 ; Liu, Yun 3 ;
作者机构： 1.Hunan Inst Nucl Agr Sci & Space Breeding, Changsha 410125, Hunan, Peoples R China
2.Hunan Agr Univ, Hunan Engn Lab Alcohol Fuels Biomass, Changsha 410128, Hunan, Peoples R China
3.Beijing Univ Chem Engn, Beijing Key Lab Bioproc, Coll Life Sci & Technol, Beijing 100029, Peoples R China
关键词： Lignocellulose;Pretreatment;Gamma irradiation;Steam explosion;Hydrolysis
期刊名称：BIOMASS & BIOENERGY （ 影响因子：5.061； 五年影响因子：4.815 ）
ISSN： 0961-9534
年卷期： 2012 年 46 卷
页码：
收录情况： SCI
摘要： It was evaluated the influence of gamma irradiation and steam explosion pretreatment on the components and the water-soluble sugars of rice straw. Compared with the steam explosion pretreated rice straw, cellucose, hemicellucose and lignin for irradiation pretreated rice sample were much more greatly degraded and the relative content of glucose was significantly enhanced from 6.58% to 47.44%. Interestingly, no glucuronide acid was detected in irradiation pretreated rice straw, while glucuronide acid with the content from 8.5 mg/g to 9.2 mg/g was obtained in steam explosion pretreated sample. Followed by enzymatic hydrolysis, higher concentration of reducing sugars (including glucose and xylose) of irradiation pretreated rice sample (90.3 mg/g) was obtained, which was approximately 2.4- and 1.1- fold higher of the unpretreated (37.2 mg/g) and of steam explosion pretreated sample (85.4 mg/g). To further verify the effectiveness of irradiation pretreatment, characterizations of rice straw, corn stalk and bagasse by an integrated process of dilute acid/enzymatic hydrolysis and irradiation pretreatment were also investigated. (C) 2012 Elsevier Ltd. All rights reserved.
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