不同汽爆处理对藜麦秸秆化学组成及纤维结构的影响

doi:10.13304/j.nykjdb.2017.0428

中国农业科技导报 ›› 2018, Vol. 20 ›› Issue (7): 105-112.DOI: 10.13304/j.nykjdb.2017.0428

• 资源环境生物药物生物质转化 • 上一篇下一篇

不同汽爆处理对藜麦秸秆化学组成及纤维结构的影响

张慧玲1,2,王志伟1,2,周中凯2*

1.天津科技大学新农村发展研究院, 天津 300457; 2.天津科技大学食品工程与生物技术学院, 天津 300457

收稿日期:2017-06-30 出版日期:2018-07-15 发布日期:2017-09-18
通讯作者: *通信作者：周中凯，教授，博士，主要从事谷物科学与营养研究。E-mail：18722568997@163.com
作者简介:张慧玲，硕士研究生，研究方向为粮油科学与工程。E-mail：1604623139@qq.com。
基金资助:
国家级星火计划项目（2015GA610003）；天津科技大学新农村发展研究院开放基金项目(XNC201504)资助。

Influence of Different Steam Explosion Treatments on Chemical Composition and Fiber Structure of Quinoa Straw

ZHANG Huiling1,2, WANG Zhiwei1,2, ZHOU Zhongkai2*

1.Institute for New Rural Development, Tianjin University of Science and Technology, Tianjin 300457; 2.College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China

Received:2017-06-30 Online:2018-07-15 Published:2017-09-18

摘要/Abstract

摘要： 为了提高藜麦秸秆资源利用率，研究了低强度蒸汽爆破技术（0.5 MPa、1.0 MPa、1.5 MPa，5 min）对藜麦秸秆化学组成变化的影响，并采用扫描电镜、X射线衍射仪、红外光谱及热重法对秸秆纤维结构特性进行分析。结果表明：汽爆处理对秸秆半纤维素影响最为显著，木质素次之，纤维素影响不显著，其中在1.0 MPa压力下半纤维素、木质素的降解率最大，且秸秆可溶性糖含量最高，达20.30%；汽爆后藜麦秸秆纤维表面受到不同程度的破坏，表面积增加，产生孔洞，纤维素的绝对结晶度降低，且热分解温度降低，热解速率加快。由此说明蒸汽爆破是一种有效的木质纤维处理方法。

关键词: 藜麦秸秆, 蒸汽爆破, 化学组成, 纤维结构

Abstract: In order to improve the utilization rate of quinoa straw, this paper studied the effects of low-intensity steam explosion (0.5 MPa, 1.0 MPa, 1.5 MPa, 5 min) on chemical composition of quinoa straw, and analyzed the straw fiber structure characteristics by scanning electron microscopy, X-ray diffractometer, infrared spectroscopy and thermogravimetry. The results indicated that the effect of steam explosion treatment on straw hemicellulose was the most significant, followed by lignin, and the effect on cellulose was the least. Among them, the degradation rates of hemicellulose and lignin were the highest under 1.0 MPa pressure, and soluble sugar content of straw was the highest, reaching 20.30%. Simultaneously, after the steam explosion, the fiber surface of quinoa straw was damaged to various extents, including superficial area increasing, holes producing, absolute crystallinity of cellulose decreasing, thermal decomposition temperature decreasing and pyrolysis rate accelerating. All these indicated that steam explosion was an effective method for treating wood fiber.

Key words: quinoa straw, steam explosion, chemical composition, fiber structure

张慧玲1,2,王志伟1,2,周中凯2*. 不同汽爆处理对藜麦秸秆化学组成及纤维结构的影响[J]. 中国农业科技导报, 2018, 20(7): 105-112.

ZHANG Huiling1,2, WANG Zhiwei1,2, ZHOU Zhongkai2*. Influence of Different Steam Explosion Treatments on Chemical Composition and Fiber Structure of Quinoa Straw[J]. Journal of Agricultural Science and Technology, 2018, 20(7): 105-112.

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[2]	涂德浴, 董红敏,丁为民,尚斌. 畜禽粪便热化学转换特性和可行性分析研究[J]. , 2007, 9(1): 59-63.

不同汽爆处理对藜麦秸秆化学组成及纤维结构的影响

Influence of Different Steam Explosion Treatments on Chemical Composition and Fiber Structure of Quinoa Straw

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