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不同提取方法对烟草纤维素微观结构的影响

YANG Mochou XU Yingbo KONG Jun HE Qing ZHOU Shun ZHANG Xiaoyu YANG Jun WANG Xiaofeng TIAN Zhenfeng GE Shaolin WANG Wanwan LIU Fei

烟草科技2019，Vol.52Issue(6)：82-89,8.
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烟草科技2019，Vol.52Issue(6)：82-89,8.

不同提取方法对烟草纤维素微观结构的影响

Effects of different extraction methods on microstructure of tobacco cellulose

YANG Mochou 1XU Yingbo 2KONG Jun 2HE Qing 3ZHOU Shun 2ZHANG Xiaoyu 3YANG Jun 2WANG Xiaofeng 3TIAN Zhenfeng 2GE Shaolin 3WANG Wanwan 2LIU Fei3

作者信息

  • 1. Research Center of Tobacco and Health, University of Science and Technology of China, Hefei 230052, China
  • 2. Key Laboratory of Combustion & Pyrolysis Study of CNTC, China Tobacco Anhui Industrial Co., Ltd., Hefei 230088, China
  • 3. Key Laboratory of Tobacco Chemistry of Anhui Province, China Tobacco Anhui Industrial Co., Ltd., Hefei 230088, ChinaAbstract:In order to investigate the effects of different extraction methods on the microstructure of tobacco cellulose, the cellulose of flue-cured and oriental tobacco leaves was extracted by neutral detergent method, acid detergent method, acid hydrolysis method and alkali treatment method. The microstructure of tobacco cellulose extracted by different methods was characterized by solid-state cross-polarization magic angle spinning carbon-13 nuclear magnetic resonance (CP/MAS 13C NMR). The yields and purity of tobacco cellulose extracted by the four methods were comparatively analyzed. The structural information such as crystal form and
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摘要

Abstract

In order to investigate the effects of different extraction methods on the microstructure of tobacco cellulose, the cellulose of flue-cured and oriental tobacco leaves was extracted by neutral detergent method, acid detergent method, acid hydrolysis method and alkali treatment method. The microstructure of tobacco cellulose extracted by different methods was characterized by solid-state cross-polarization magic angle spinning carbon-13 nuclear magnetic resonance (CP/MAS 13C NMR). The yields and purity of tobacco cellulose extracted by the four methods were comparatively analyzed. The structural information such as crystal form and distribution, crystallinity and fibril size of tobacco cellulose were obtained by fitting the absorption peaks of NMR spectra. The results showed that: 1) The purity of tobacco cellulose extracted by neutral detergent method was higher than the other three methods. 2) The tobacco cellulose extracted by the four methods had the same crystal form with the dominant cellulose form of I β crystal, however the crystal form distribution was significantly different. 3) Among the four extraction methods, the cellulose extracted by neutral detergent method had the highest crystallinity, and the sizes of elementary fibrils and elementary fibril aggregates were the largest. Compared with the other three methods, the influence of neutral detergent method on the microstructure of tobacco cellulose was the slightest. Thus, for the study of tobacco cellulose microstructure, neutral detergent method is a suitable cellulose extraction method.

关键词

烟草纤维素/中性洗涤剂法/酸性洗涤剂法/酸性水解法/碱液分离法/微观结构/结晶度

Key words

Tobacco cellulose/Neutral detergent method/Acid detergent method/Acid hydrolysis method/Alkali treatment method/Microstructure/Crystallinity

分类

轻工纺织

引用本文复制引用

YANG Mochou,XU Yingbo,KONG Jun,HE Qing,ZHOU Shun,ZHANG Xiaoyu,YANG Jun,WANG Xiaofeng,TIAN Zhenfeng,GE Shaolin,WANG Wanwan,LIU Fei..不同提取方法对烟草纤维素微观结构的影响[J].烟草科技,2019,52(6):82-89,8.

基金项目

安徽中烟工业有限责任公司-中国科大先进技术研究院"化学与燃烧"联合实验室科技项目"纤维素微观结构表征与热解特性研究"(2017045). （2017045）

烟草科技

OA北大核心CSCDCSTPCD

1002-0861

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