National R&D Center for Se-rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China; Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China.
Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, PR China.
Food Chem. 2021 Oct 30;360:129922. doi: 10.1016/j.foodchem.2021.129922. Epub 2021 Apr 22.
Starch based food packaging has been receiving increasing attention. However, the inherent poor properties of starch restrict its practical applications in the versatile material science field. In this study, a fast, simple, and environmentally friendly route to construct polyfunctional starch/tea polyphenols nanofibrous films (STNFs) by one-step temperature-assisted electrospinning was developed. The effects of introduction of tea polyphenols (TP) on the mechanical and antioxidant activity of STNFs were comprehensively investigated. Results of ABTS·+ free radical scavenging assay showed that the antioxidant activity of STNFs was endowed by addition of TP with optimum mechanical properties confirmed by tensile test. More interestingly, the hydrophobicity of STNFs was improved dramatically with increasing cross-linking time as indicated by water contact angle (WCA) measurement showing no effect on the antioxidant activity of the films. The results of this work offer a major step forward to promote functional starch-based materials for sustainable application in food packaging.
淀粉基食品包装越来越受到关注。然而，淀粉固有的较差性能限制了其在多功能材料科学领域的实际应用。在本研究中，通过一步温度辅助静电纺丝开发了一种快速、简单、环保的方法来构建多功能淀粉/茶多酚纳米纤维膜（STNFs）。研究了茶多酚（TP）的引入对 STNFs 机械性能和抗氧化活性的影响。ABTS·+自由基清除试验结果表明，通过添加 TP 赋予了 STNFs 抗氧化活性，拉伸试验证实了其具有最佳的机械性能。更有趣的是，随着交联时间的增加，STNFs 的疏水性显著提高，通过水接触角（WCA）测量表明对薄膜的抗氧化活性没有影响。这项工作的结果为促进可持续应用于食品包装的功能性淀粉基材料迈出了重要一步。
