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Novel dual-crosslinked antimicrobial hydrogels of oxidized hyaluronic acid/gelatin grafted with curcumin-Zn2+ complexes for preservation of chilled chicken

文献类型： 外文期刊

作者： Mai, Xutao 1 ; Yang, Yuheng 1 ; Wang, Daoying 1 ; Xu, Weimin 1 ; Sun, Zhilan 1 ; Liu, Fang 2 ;

作者机构： 1.Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety, State Key Lab Cultivat Base, Nanjing 210014, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Cold Chain Logist Technol Agroprod, Nanjing 210014, Peoples R China

4.Nanjing Normal Univ, Sch Food Sci & Pharmaceut Engn, Nanjing 210097, Peoples R China

关键词： Double-crosslinked; Oxidized hyaluronic acid; Curcumin; Coordination; Bactericidal activity

期刊名称：FOOD PACKAGING AND SHELF LIFE （ 影响因子：10.6； 五年影响因子：9.8 ）

ISSN： 2214-2894

年卷期： 2025 年 49 卷

页码：

收录情况： SCI

摘要： To enhance the solubility and stability of curcumin, a novel double-crosslinked antimicrobial hydrogels OHA/ GEL/CUR-Zn(II) was prepared. Curcumin, as a ligand, was complexed with Zn2+ to form a stable complex (CUR-Zn(II)), which was grafted to the hydrogel formed by oxidized hyaluronic acid (OHA) and gelatin (GEL) through Schiff base reaction. Fourier transform infrared spectroscopy analysis was employed to determine the formation of Schiff base (C--N) between OHA with GEL, as well as the ester bond between OHA with CUR-Zn(II). X-ray diffraction results showed the presence of amorphous peaks in the composite film. The change in crystal structure was probably due to the formation of new hydrogen bonding or chemical bonding between CUR-Zn(II) and OHA/GEL. The incorporation of CUR-Zn(II) complexes into a hydrogel matrix resulted in a significant enhancement of tensile strength (TS) and elongation at break, accompanied by a reduction in water vapor transmission rate. Meanwhile, the hydrogel achieved a bactericidal rate of over 99 % against the predominant spoilage bacteria Escherichia coli and Staphylococcus aureus in chilled chicken meat, extending the shelf life of the chilled chicken meat to over 8 days. Overall, the composite hydrogel enhanced the stability of curcumin by chelating it with Zn2+ and increased its solubility by grafting it onto OHA and GEL cross-linked hydrogels, demonstrating significant application potential in food packaging.

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