淀粉基保鲜材料的改性策略与复合应用

    Modification strategies and applications of starch-based preservation materials

    • 摘要: 淀粉作为一种来源丰富、可再生且可生物降解的天然高分子材料,在食品保鲜包装领域展现出巨大的应用潜力。然而,纯淀粉基材料存在机械性能差、阻隔性不足等缺陷,限制了其实际应用。梳理了淀粉的基本分子结构与成膜机理,总结了淀粉分别与外源多糖、蛋白质、精油及纳米材料复合制备保鲜包装材料的研究进展,系统阐述了当前常用的物理改性与化学改性策略,分析了不同改性方法对淀粉基保鲜材料结构与性能的调控机制。在此基础上,介绍了pH响应、气体响应、光响应等智能响应型淀粉基保鲜包装的研究进展,最后总结了淀粉基保鲜材料未来研发与应用面临的挑战,并展望了其发展方向,以期为高性能、多功能淀粉基保鲜包装材料的开发与应用提供参考。

       

      Abstract: Starch, an abundant, renewable, and biodegradable natural polymer, exhibits substantial potential for food preservation packaging. However, pristine starch-based materials suffer from inherent drawbacks, such as poor mechanical properties and inadequate barrier performance, which significantly limit their practical application. This review outlines the fundamental molecular structure and film-forming mechanism of starch. To overcome the limitations of native starch, recent advances in preparing preservation packaging materials by blending starch with polysaccharides, proteins, essential oils, and nanomaterials are summarized. Commonly employed physical and chemical modification strategies are systematically elaborated, and the regulatory mechanisms by which different modification methods influence the structure and properties of starch-based preservation materials are analyzed. Physical modification approaches, including heat-moisture treatment, ultrasound, and irradiation, can alter the crystallinity and molecular chain arrangement of starch in an environmentally friendly manner, whereas chemical modification enables the introduction of new functional groups or covalent bonds. Furthermore, research progress on various types of intelligent responsive starch-based preservation packaging, including pH-responsive, gas-responsive, and light-responsive systems, is introduced. Finally, the challenges facing the future research, development, and application of starch-based preservation materials are summarized, and future directions are discussed to provide a reference for the development of high-performance, multifunctional starch-based preservation packaging materials.

       

    /

    返回文章
    返回