| 王芳,崔为正,张红丹.氯化胆碱-马来酸低共熔溶剂预处理对玉米秸秆纤维素酶解影响的研究[J].中国造纸,2026,45(10):32-40 |
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| 氯化胆碱-马来酸低共熔溶剂预处理对玉米秸秆纤维素酶解影响的研究 |
| Study on the Effect of Choline Chloride-Maleic Acid Eutectic Solvent Pretreatment on Cellulose Enzymatic Hydrolysis of Corn Straw |
| 收稿日期：2026-04-11 修订日期：2026-05-20 |
| DOI：10.11980/j.issn.0254-508X.2026.10.005 |
| 关键词: 玉米秸秆 DES预处理 酶解 木质素 |
| Key Words:corn straw DES pretreatment enzymatic hydrolysis lignin |
| 基金项目:广东省自然科学基金 2025A1515012048国家重点研发计划 2021YFC2101603广东省自然科学基金（2025A1515012048）；国家重点研发计划（2021YFC2101603）。 |
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| 摘要:本研究以玉米秸秆为原料，采用氯化胆碱-马来酸低共熔溶剂（DES）预处理，探讨不同预处理温度、时间、氯化胆碱与马来酸物质的量比以及固液比等预处理条件对组分及纤维素酶解效率的影响。在140 ℃、90 min、氯化胆碱与马来酸物质的量比3∶1、固液比1∶15（g∶g）时，经氯化胆碱-马来酸DES预处理，酶解24 h，底物酶解可获得最佳葡萄糖收率为34.2 g/100 g原料。通过对玉米秸秆原料和预处理后样品表征，结果表明，酶解效率的提升得益于半纤维素和木质素的脱除及其致密结构的破坏；通过添加剂吐温80，在酶用量减半的情况下仍保持相当的葡萄糖收率；进一步研究发现，经过2次循环的DES仍可收获低分子质量再生木质素。 |
| Abstract:In this study, the DES pretreatment of corn straw using choline chloride/maleic acid was determined under different pretreatment condition such as temperature, time, mole ratio of choline chloride-maleic acid, and solid-liquid ratio on the composition and the efficiency of cellulose hydrolysis was explored. When the pretreatment conditions were 140 ℃, 90 min, DES mole ratio of 3∶1 (choline chloride:maleic acid), and solid-liquid ratio (g∶g) of 1∶15, enzymatic hydrolysis time 24 h, the optimal glucose yield of 34.2 g/100 g raw material was obtained from DES pretreated corn straw. The results indicated that the removal of hemicellulose and lignin during DES pretreatment destroyed the dense structure of raw material, which was confirmed by the characterization of raw and pretreated corn straw, thus enhancing the enzymatic efficiency. With the addition of Tween 80 surfactant, a comparable glucose yield was achieved when the enzyme dosage was reduced by 50%. In addition, the DES after two cycles could still liberated low molecular weight regenerated lignin. |
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