Zhao Xipo, Wang Min, Xu Leyao, Li Xuankang, Mo Fan, Tian Chen, Zhou Ling
Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology Wuhan Hubei 430068 P. R. China
New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology Wuhan Hubei 430068 P. R. China.
RSC Adv. 2025 May 13;15(20):15771-15778. doi: 10.1039/d5ra02208h. eCollection 2025 May 12.
The high amylopectin content in native starch renders starch solutions suboptimal for meeting the rheological behavior requirements of electrospinning processes, making standalone electrospinning processing particularly challenging. In this work, isoamylase was used to enzymatically modify native starch. Effective debranching was accomplished by using the enzyme's particular activity toward the α-1,6-glycosidic linkages in amylopectin, which produced modified starch with a 57.26% amylose concentration. Electrospinning was employed to fabricate micro/nanofibers from enzymatically modified starch. A systematic investigation was conducted on the electrospinning parameters and morphological characteristics of the resultant micro/nanofibers, successfully producing fibrous structures with diameters ranging from 200-500 nm. This study establishes new methodological references for the application of electrospinning technology in developing all-starch fibrous materials.
天然淀粉中高支链淀粉含量使得淀粉溶液无法满足静电纺丝工艺对流变行为的要求，这使得单独的静电纺丝加工极具挑战性。在这项工作中，使用异淀粉酶对天然淀粉进行酶促改性。通过利用该酶对支链淀粉中α-1,6-糖苷键的特定活性实现了有效的去分支，从而产生了直链淀粉浓度为57.26%的改性淀粉。采用静电纺丝技术由酶促改性淀粉制备微/纳米纤维。对静电纺丝参数和所得微/纳米纤维的形态特征进行了系统研究，成功制备出直径范围为200 - 500 nm的纤维结构。本研究为静电纺丝技术在开发全淀粉纤维材料中的应用建立了新的方法学参考。
