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| 纤维素酶酶解苇浆纤维微观结构和结晶结构的变化 | |
| 引用本文： | 鲁杰,石淑兰,杨汝男,牛梅红,宋文静.纤维素酶酶解苇浆纤维微观结构和结晶结构的变化[J].中国造纸学报,2005,20(2):85-90. |
| 作者姓名： | 鲁杰 石淑兰 杨汝男 牛梅红 宋文静 |
| 作者单位： | 1. 天津科技大学,天津,300222;大连轻工业学院,辽宁,大连,116034 2. 天津科技大学,天津,300222;中国科学院纤维素化学重点实验室,广东广州,510650 3. 大连轻工业学院,辽宁,大连,116034 |
| 基金项目： | 中国科学院资助项目，中国科学院重点实验室基金 |
| 摘 要： | 采用红外光谱(IR)、X射线衍射分析和扫描电镜对在纤维素酶解进程中苇浆纤维素大分子的结构及纤维形态的变化进行了研究.研究结果表明,纤维素酶酶解进程中,纤维素大分子的晶型没有改变,但结晶度呈现周期性变化,微晶尺寸略有降低.在酶解初期,纤维素酶不仅作用于纤维素无定形区,也开始作用在纤维素结晶区表面;在酶解中、后期,纤维素酶对纤维素结晶区和无定形区的作用呈现周期性变化.纤维素酶解过程中纤维表面呈现周期性"剥皮"现象,并且在纤维表面出现孔洞和沟槽,在孔洞处纤维易断裂,导致纤维长度和粗度的降低. |
| 关 键 词： | 纤维素酶 纤维素 酶法水解 结晶度 微晶结构 |
| 文章编号： | 1000-6842(2005)02-0085-06 |
| 收稿时间： | 08 16 2005 12:00AM |
| 修稿时间： | 2005年8月16日 |
Modification of Reed Cellulose Microstructure and IT Change in Enzymatic Hydrolysis of Reed Pulp |
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| LU Jie,SHI Shu-lan,YANG Ru-nan,NIU Mei-hong,SONG Wen-jing.Modification of Reed Cellulose Microstructure and IT Change in Enzymatic Hydrolysis of Reed Pulp[J].Transactions of China Pulp and Paper,2005,20(2):85-90. | |
| Authors: | LU Jie SHI Shu-lan YANG Ru-nan NIU Mei-hong SONG Wen-jing |
| Affiliation: | 1. Tianjin University of Science and Technology, Tianjin, 300222; 2. Dalian Institute of Light Industry, Dalian, Iiaoning Province, 116034; 3. State Key Lab of Pulp and Paper Engineering, South China University of Technology,Guangzhou, Guangdong Province, 510650 |
| Abstract: | The change of cellulose structure and morphological characteristic of reed pulp during the enzymatic hydrolysis was studied by IR, X-ray diffraction and SEM. The results showed that the crystal form of cellulose was not changed during the enzymatic hydrolysis, but the crystallinity was changed periodically. And the microcrystallinity size was decreased. The cellulases not only acted on the amorphous region, and also acted on the crystalline region surface at the initial stage. The cellulase action was changed at the crystalline region and the amorphous region periodically in the anaphase of enzymatic hydrolysis. Peeling phenomena and the hole and the groove on the cellulose surface were found during the enzymatic degradation. |
| Keywords: | cellulase cellulose enzymatic hydrolysis crystallinity microcrystallinity structure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
