冷等离子体改性甘蔗渣（Saccharum officinarum）纸浆纤维素：溶解、结构和表面化学分析。
Modification of cellulose from sugarcane (Saccharum officinarum) bagasse pulp by cold plasma: Dissolution, structure and surface chemistry analysis.
机构信息
School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China.
School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China; Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China; Engineering and Technological Research Centre of Guangdong Province on Intelligent Sensing and Process Control of Cold Chain Foods, & Guangdong Province Engineering Laboratory for Intelligent Cold Chain Logistics Equipment for Agricultural Products, Guangzhou Higher Education Mega Centre, Guangzhou 510006, China.
出版信息
Food Chem. 2022 Apr 16;374:131675. doi: 10.1016/j.foodchem.2021.131675. Epub 2021 Nov 27.
Cellulose is a most abundant natural biopolymer, however, the strong hydrogen bonding system makes cellulose hard to dissolve, limiting its further applications. In this study, an innovative cold plasma (CP) technology was used to modify cellulose from sugarcane (Saccharum officinarum) bagasse pulp. Dissolution, structure, and surface chemistry of cellulose before and after CP treatment were investigated. Results showed that the dissolution rate of cellulose after different CP treatment time (3-12 min) and operating voltage (40-70 kV) was significantly improved. Roughness, even holes (CP treatment 9 min with 50 kV) and breakage (CP treatment 9 min with 70 kV) were observed on the surface. The crystallinity index decreased from 62.31% (control) to 60.88% (CP treatment 3 min with 50 kV). The hydrogen bonding force was weakened and the peak intensity of CO and CO stretching vibration groups were enhanced. Therefore, CP-modified cellulose may be applied more in future, such as biological films for food future packaging.
纤维素是最丰富的天然生物聚合物，然而，其强氢键系统使得纤维素难以溶解，限制了其进一步的应用。在本研究中，采用了一种创新的冷等离子体（CP）技术来修饰甘蔗（Saccharum officinarum）蔗渣浆中的纤维素。研究了 CP 处理前后纤维素的溶解、结构和表面化学性质。结果表明，经过不同 CP 处理时间（3-12 分钟）和操作电压（40-70 kV）处理后，纤维素的溶解速率显著提高。在表面观察到粗糙度、均匀的孔（CP 处理 9 分钟，50 kV）和断裂（CP 处理 9 分钟，70 kV）。结晶度指数从 62.31%（对照）下降到 60.88%（CP 处理 3 分钟，50 kV）。氢键力减弱，CO 和 CO 伸缩振动基团的峰值强度增强。因此，CP 修饰的纤维素在未来可能会有更多的应用，例如用于食品未来包装的生物膜。
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