| 水热预处理竹材制备低聚木糖和单糖的研究 |
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| 引用本文： | 詹云妮,黄晨,郝昕,王梓萌,邓拥军,房桂干.水热预处理竹材制备低聚木糖和单糖的研究[J].林产化学与工业,2021(1):77-84. |
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| 作者姓名： | 詹云妮 黄晨 郝昕 王梓萌 邓拥军 房桂干 |
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| 作者单位： | 中国林业科学研究院林产化学工业研究所;南京林业大学 |
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| 基金项目： | 江苏省生物质能源与材料重点实验室基本科研业务费项目(JSBEM-S-202004);国家自然科学基金青年项目(32001273);中国博士后科学基金面上项目(2020M670526)。 |
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| 摘 要： | 以贵州慈竹为研究对象,对其进行水热预处理(LHWP),研究不同预处理强度系数对竹材化学组分、酶水解性能及低聚木糖(XOS)浓度的影响。利用X射线衍射(XRD)和傅里叶转换红外线光谱分析仪(FT-IR)分析预处理前后物料的物理和化学结构变化。研究结果表明:水热预处理过程中竹材的半纤维素含量显著降低,而纤维素及木质素的含量则有所增加;水热预处理能够显著提升竹材的酶解效率,在预处理强度系数为4.50时,预处理竹材的酶水解性能最高,葡聚糖和木聚糖酶水解得率分别为79.0%和92.0%;而XOS质量浓度则在强度系数为3.96时,达到最大值8.7g/L(得率55.3%),继续提高预处理强度,XOS质量浓度降低,在强度系数为4.50时,体系中仅检测到0.5g/L(得率3.1%)XOS。
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| 关 键 词： | 水热预处理 竹材 酶水解 低聚木糖 |
Preparation of Xylooligosaccharides and Monosaccharides from Bamboo Chips by Liquid Hot Water Pretreatment |
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| ZHAN Yunni,HUANG Chen,HAO Xin,WANG Zimeng,DENG Yongjun,FANG Guigan.Preparation of Xylooligosaccharides and Monosaccharides from Bamboo Chips by Liquid Hot Water Pretreatment[J].Chemistry & Industry of Forest Products,2021(1):77-84. |
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| Authors: | ZHAN Yunni HUANG Chen HAO Xin WANG Zimeng DENG Yongjun FANG Guigan |
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| Institution: | (Institute of Chemical Industry of Forest Products,CAF,National Engineering Lab.for Biomass Chemical Utilization,Key Lab.of Chemical Engineering of Forest Products,National Forestry and Grassland Administration,Key Lab.of Biomass Energy and Material,Jiangsu Province,Nanjing 210042,China;Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Nanjing 210037,China) |
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| Abstract: | Effects of liquid hot water pretreatment(LHWP)on the chemical composition,enzymatic digestibility,and xylooligosaccharides(XOS)concentration were investigated in Bambusa emeiensis.In addition,the physical and chemical structural variationsof thesamples before and after the pretreatment were studied using a X-ray diffraction(XRD)spectrometer and Fourier transform infrared spectroscopy(FT-IR).Results indicated that the xylan content was significantly decreased after LHWP,while the contents of glucan and lignin increasing accordingly.LHWP improved the enzymatic digestibility of the bamboo chips feedstock,and the enzymatic hydrolysis yield reached the maximum of 79.0%(glucan)and 92.0%(xylan)at a pretreatment intensity coefficiency of 4.50.However,the XOS concentration reached the maximum value(8.7 g/L)at an intensity coefficiency of 3.96(relative mass percentage of 55.3%),and decreased thereafter as the pretreatment strength was further increased.Finally only 0.5 g/L(relative mass percentage of 3.1%)XOS was obtained in the pretreatment prehydrolysate at an intensity coefficiency of 4.50. |
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| Keywords: | liquid hot water pretreatment bambaoo enzymatic hydrolysis xylooligosaccharides |
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