Effect of Different Ionic Liquid Pretreatment on the Enzymatic Hydrolysis of Lignocelluloses from Corn Stalk

doi:10.3969/j.issn.1673-1689.2019.04.006

Home > Archive>Volume 38, Issue 4, 2019 >39-44. DOI:10.3969/j.issn.1673-1689.2019.04.006

Effect of Different Ionic Liquid Pretreatment on the Enzymatic Hydrolysis of Lignocelluloses from Corn Stalk
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                        10.3969/j.issn.1673-1689.2019.04.006
                    
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Pretreatment of lignocelluloses by ionic liquid was paid more and more attention recently due to its high efficiency and environment friendly features. In this study，the effect of four different ionic liquids（[Emim]Ac、[Amim]Cl、[Bmim]HSO4、[Bmim]BF4） pretreament on the enzymatic efficiency was investigated. Besides，the change of morphology，chemical composition and structure of corn stalk was also investigated to explore the relative mechanism. The results indicated that the connection bond between lignocellulose and hemicellulose was destoryed and enzymatic hydrolysis was raised after treated by ionic liquids of [Emim]Ac、[Amim]Cl and[Bmim]BF4 at 130 ℃ for 1.5 h. The ionic liquid of[Emim]Ac showed an selective effect in removal of lignin，reaching to 54.47%. Besides，the compact network structure of corn stalk was destroyed and a coarser surface was formed. Meanwhile，the crystal structure of cellulose was transformed from I to II，and the enzymatic hydrolysis was up to 91.20%，equaling to 4.77 times of untreated.

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HU Xiaohui, CHENG Li, GU Zhengbaio, HONG Yan, LI Zhaofeng, LI Caiming. Effect of Different Ionic Liquid Pretreatment on the Enzymatic Hydrolysis of Lignocelluloses from Corn Stalk[J]. Journal of Food Science and Biotechnology,2019,38(4):39-44.

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