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CaO/MgO复合固体碱预处理杂交狼尾草提高酶解率
Alternative TitleTHE PRETREATMENT OF PENNISETUM HYBRID BY USING COMPOSITE SOLID BASE-CaO/MgO TO ENHANCE ENZYMATIC DIGESTIBILITY
赵月1,2; 谭雪松1; 亓伟1; 王琼1; 庄新姝1; 袁振宏1
2017-05
Source Publication太阳能学报
ISSN0254-0096
Volume38Issue:5Pages:1447-1452
Abstract以杂交狼尾草为原料,采用CaO/MgO复合固体碱为催化剂,通过水相环境下高温处理,研究反应条件对狼尾草酶解效率及总糖收率的影响。研究结果表明:在催化剂含量20%,温度110℃,时间80min,固液比1:20的条件下预处理狼尾草,木质素去除率高达54.18%。加酶量为40FPU/g,酶解72h,葡聚糖收率从未处理时的41.23%增大到81.04%;CaO/MgO固体碱预处理可破坏杂交狼尾草原本的致密结构,暴露更多的纤维素,破坏纤维素中的分子内和分子间的化学基团。CaO/MgO固体碱循环使用4次后无明显失活。
Other AbstractThe effects of the reaction conditions on enzymatic digestibility and total sugar yield of Pennisetum hybrid pretreated in high temperature aqueous environment with composite solid alkali-CaO/MgO as the catalyst are investigated in this paper. The results indicated that 20% catalyst content, 110 ℃, 80 min and 1 : 20 ratio of solid are the optimal pretreatment conditions, whose lignin removal rate is up to 54.18%. When the enzyme loading is 40 FPU/g, 72 h enzymatic digestibility increases from 41.23% to 81.04%, substrates can be fully hydrolyzed. After pretreatment, the compact structure is damaged, more fibers expose, the chemical groups are destroyed like hydrogen bond in molecular. The catalysts CaO/MgO can be recovered and regenerated.
Keyword固体碱 酶解 杂交狼尾草 预处理 solid base enzymolysis Pennisetum hybrid pretreatment
Language中文
CSCD IDCSCD:6068039
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/16519
Collection中国科学院广州能源研究所
Corresponding Author庄新姝
Affiliation1.中国科学院广州能源研究所,中国科学院可再生能源重点实验室,广州510640;
2.中国科学院大学,北京100049
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
赵月,谭雪松,亓伟,等. CaO/MgO复合固体碱预处理杂交狼尾草提高酶解率[J]. 太阳能学报,2017,38(5):1447-1452.
APA 赵月,谭雪松,亓伟,王琼,庄新姝,&袁振宏.(2017).CaO/MgO复合固体碱预处理杂交狼尾草提高酶解率.太阳能学报,38(5),1447-1452.
MLA 赵月,et al."CaO/MgO复合固体碱预处理杂交狼尾草提高酶解率".太阳能学报 38.5(2017):1447-1452.
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