Preparation of transparent and flexible regenerated kenaf CNF composite films with curcumin-metal complex for food packaging applications

IF 8.5 1区农林科学 Q1 FOOD SCIENCE & TECHNOLOGY Food Packaging and Shelf Life Pub Date : 2024-07-18 DOI:10.1016/j.fpsl.2024.101327

Anil Kumar , Jeyakumar Saranya Packialakshmi , Jun Tae Kim , Gye Hwa Shin

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Abstract

Cellulose nanofibers (CNF) derived from kenaf plant were combined with curcumin (Cur)-metal complexes to produce regenerated composite films. Cur was used to synthesize homoleptic Cur-metal complexes with diamagnetic Zn(II) and paramagnetic Cu(II) metal ions. Cur-Zn(II) complex and Cur-Cu(II) complex were synthesized under the same reaction conditions to check the synergistic effect of engaging the diketone electrons of Cur with strong coordination bonds with two different metal ions. The synthesized Cur-metal complexes were used as fillers to produce CNF composite films for biodegradable food packaging film. Results showed that the Cur-Zn(II) complex-loaded CNF composite films exhibit higher antioxidant activity than other films whereas Cur-Cu(II) complex-loaded CNF composite films showed prominent antibacterial activity against foodborne pathogenic bacteria such as Listera monocytogenes and Escherichia coli. It is due to the coordination of the diketone electron of Cur with diamagnetic and paramagnetic metal ions that influenced the antioxidant and antibacterial properties of Cur. Overall, this study proved that it was possible to use Cur in the form of Cur-Zn(II) complex as an antioxidant filler and Cur-Cu(II) complex as an antibacterial filler for active food packaging applications.

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制备具有姜黄素-金属复合物的透明柔性再生槿麻 CNF 复合薄膜，用于食品包装应用

将从槿麻植物中提取的纤维素纳米纤维（CNF）与姜黄素（Cur）-金属络合物相结合，生产出再生复合薄膜。莪术被用来合成具有双磁性 Zn(II) 和顺磁性 Cu(II) 金属离子的莪术-金属配合物。在相同的反应条件下合成了 Cur-Zn(II) 复合物和 Cur-Cu(II) 复合物，以检验 Cur 的二酮电子与两种不同金属离子的强配位键的协同效应。合成的弧金属配合物被用作填料，用于生产可生物降解食品包装膜的 CNF 复合薄膜。结果表明，Cur-Zn(II) 复合物负载的 CNF 复合薄膜比其他薄膜具有更高的抗氧化活性，而 Cur-Cu(II)复合物负载的 CNF 复合薄膜对李斯特菌和大肠杆菌等食源性致病菌具有显著的抗菌活性。这是由于锔的二酮电子与二磁性和顺磁性金属离子配位，从而影响了锔的抗氧化和抗菌特性。总之，这项研究证明，可以将 Cur-Zn(II) 复合物形式的 Cur 用作抗氧化填料，Cur-Cu(II) 复合物形式的 Cur 用作活性食品包装应用中的抗菌填料。

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来源期刊

Food Packaging and Shelf Life Agricultural and Biological Sciences-Food Science

CiteScore

14.00

自引率

8.80%

发文量

214

审稿时长

70 days

期刊介绍： Food packaging is crucial for preserving food integrity throughout the distribution chain. It safeguards against contamination by physical, chemical, and biological agents, ensuring the safety and quality of processed foods. The evolution of novel food packaging, including modified atmosphere and active packaging, has extended shelf life, enhancing convenience for consumers. Shelf life, the duration a perishable item remains suitable for sale, use, or consumption, is intricately linked with food packaging, emphasizing its role in maintaining product quality and safety.