| 蒸煮爆破处理过程中毛竹材加工剩余物主要化学成分的变化研究 |
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| 引用本文： | 王娜娜,尚娜娜,陈天琪,金贞福. 蒸煮爆破处理过程中毛竹材加工剩余物主要化学成分的变化研究[J]. 竹子研究汇刊, 2011, 30(4) |
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| 作者姓名： | 王娜娜 尚娜娜 陈天琪 金贞福 |
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| 作者单位： | 浙江农林大学工程学院,浙江,临安,311300 |
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| 基金项目： | 国家林业局948项目(2011-4-09) |
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| 摘 要： | 采用硫酸水解法(aldito-acetate procedure)、X射线粉末衍射(XRD)、傅里叶变换红外光谱(FTIR)分析了蒸爆过程中毛竹材加工剩余物纤维聚集态结构及主要化学成分的变化.研究结果表明,(1)毛竹材加工剩余物经蒸爆处理,60%左右的半纤维素水解,木质素低分子化且裸露到纤维表面,易被80%乙醇及木质素溶剂提取,从而实现毛竹材加工剩余物主要组分的有效分离.(2)毛竹材加工剩余物经蒸爆处理,80%乙醇抽提物得率提高,综纤维素得率减少,木质素含量减少:葡萄糖相对含量增加,半纤维素降解明显.(3)210℃处理10 min和220℃处理10 min的蒸爆浆的化学组成变化几乎没有区别,但两者与200℃处理10 min差别较大,210℃处理10 min是毛竹材加工剩余物适宜的处理温度.(4)FTIR结果显示蒸爆处理后在1040～1060 cm-1区的吸收峰分裂为明显的2个峰表明半纤维素降解,1166 cm-1处的吸收强度明显减弱,表明C-O-C键有不同程度的断裂.X-身寸线衍射分析结果显示毛竹材加工剩余物蒸爆处理后纤维素相对结晶度增加.
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| 关 键 词： | 毛竹材加工剩余物 蒸爆预处理 80％乙醇提取物 半纤维素 纤维素 |
Changes in Chemical Characteristics of Bamboo Components during Steam Explosion |
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| Wang Nana , Shang Nana , Chen Tianqi , Jin Zhenfu. Changes in Chemical Characteristics of Bamboo Components during Steam Explosion[J]. Journal of Bamboo Research, 2011, 30(4) |
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| Authors: | Wang Nana Shang Nana Chen Tianqi Jin Zhenfu |
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| Affiliation: | Wang Nana Shang Nana Chen Tianqi Jin Zhenfu(School of Engineering,Zhejiang Agricultural and Forestry University,Linan 311300,Zhejiang,China) |
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| Abstract: | Chemical changes in cell wall components of bamboo residue during steam explosion were analyzed by methods of aldito-acetate procedure,X-ray diffraction(XRD) and Fourier transform infrared spectroscopy(FTIR).Lignin linkages were cleaved and formed low molecular substances during steam explosion,thus,lignin were liberated from the cell wall to the fiber surface,and almost 60% hemicelluloses was lost after steam explosion treatment.After steam explosion treatment,yields of 80% ethanol extractives and glucose ... |
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| Keywords: | Bamboo residue Steam explosion treatment 80% ethanol extractives Hemicelluloses Cellulose |
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