College of Food Science and Technology, Bohai University, Jinzhou 121013, PR China; National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou 121013, PR China.
College of Food Science and Technology, Bohai University, Jinzhou 121013, PR China; National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou 121013, PR China.
Int J Biol Macromol. 2024 Jun;270(Pt 1):132305. doi: 10.1016/j.ijbiomac.2024.132305. Epub 2024 May 11.
Although the active and intelligent properties of rich in anthocyanin extracts added to films have been extensively studied, there remains a sparsity of research pertaining to the miscibility of blended films. This work focused on the miscibility of the chitosan/polyvinyl alcohol (CP) film caused by the addition of Aronia melanocarpa extracts (AME), which are rich anthocyanins and phenolic acids, and its effect on physicochemical and functional properties. AME facilitated the amidation reaction and ionic interaction of chitosan in CP films, leading to loss of the crystallinity degree of chitosan. Furthermore, the crystal disruption promoted the formation of hydrogen bonds with polyvinyl alcohol (PVA) with the promoted miscibility. CP film incorporated with 8 % AME possessed the highest tensile strength (26.79 MPa), and elongation at break (66.38 %) as well as excellent ultraviolet-visible (UV-vis) light barrier property, water vapor barrier properties, due to its high miscibility degree. Moreover, this film also showed excellent antioxidant, antibacterial activity, and pH response function, which could be used to monitor the storage of highly perishable shrimp. Hence, the AME provided extra functionality and improved miscibility between chitosan and PVA, which showed great potential for the preparation of high-performance bioactive-fortified and intelligent food packaging films.
尽管富含花色苷提取物的薄膜具有积极和智能的特性，已经得到了广泛的研究，但对于共混膜的混溶性的研究仍然很少。本工作主要研究了添加富含花色苷和酚酸的黑果腺肋花楸提取物（AME）对壳聚糖/聚乙烯醇（CP）薄膜混溶性的影响及其对物理化学和功能特性的影响。AME 促进了 CP 薄膜中壳聚糖的酰胺化反应和离子相互作用，导致壳聚糖结晶度的丧失。此外，晶体的破坏促进了与聚乙烯醇（PVA）形成氢键，从而提高了混溶性。添加 8% AME 的 CP 薄膜具有最高的拉伸强度（26.79 MPa）和断裂伸长率（66.38%）以及优异的紫外线-可见光（UV-vis）光阻隔性能、水蒸气阻隔性能，这是由于其高混溶性。此外，该薄膜还具有良好的抗氧化、抗菌活性和 pH 响应功能，可用于监测易腐虾的储存。因此，AME 提供了额外的功能，并提高了壳聚糖和 PVA 之间的混溶性，这为制备高性能的生物活性强化和智能食品包装薄膜提供了巨大的潜力。
