Preparation and characterization of κ-carrageenan/dextran films blended with nano-ZnO and anthocyanin for intelligent food packaging
文献类型： 外文期刊
作者： Jiang, Guangyang 1 ; Yang, Yicheng 1 ; Sheng, Wenyang 1 ; Yang, Li 1 ; Yang, Huan 1 ; Tang, Tingting 4 ; Wang, Chenzhi 3 ; Tian, Yongqiang 1 ;
作者机构： 1.Sichuan Univ, Coll Biomass Sci & Engn, Chengdu 610065, Peoples R China
2.Sichuan Univ, Minist Educ, Key Lab Leather Chem & Engn, Chengdu 610065, Peoples R China
3.Sichuan Acad Agr Sci, Inst Agroprod Proc Sci & Technol, Inst Food Nutr & Hlth, Chengdu 610066, Peoples R China
4.Chongqing Three Gorges Vocat Coll, Coll Agr & Forestry Sci & Technol, Chongqing, Peoples R China
关键词： Microbial-originated dextran; Antimicrobial; pH-responsive; Multifunctional intelligent packaging; Biodegradation
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.5； 五年影响因子：8.7 ）
ISSN： 0141-8130
年卷期： 2024 年 282 卷
页码：
收录情况： SCI
摘要： The kappa-carrageenan/microbial-originated dextran-based multifunctional intelligent packaging films, integrated with natural anthocyanins as a colorant and ZnO as an antibacterial agent, were successfully developed using a casting method. Their applicability and functionality were systematically assessed through various analytical techniques. The addition of dextran, anthocyanins, and ZnO in the films resulted in an increased tensile strength (from 13.66 f 0.53 to 29.70 f 1.29 MPa) and elongation at break (from 16.69 f 1.05 % to 39.49 f 0.73 %), and decreased water solubility (from 64.94 f 0.34 % to 32.84 f 1.55 %) and water vapor barrier property (from 8.29 f 0.12 x 10-10 g/m center dot s center dot Pa to 6.92 f 0.1 x 10-10 g/m center dot s center dot Pa). Spectroscopic analysis revealed that the dextran, ZnO and anthocyanins were uniformly dispersed within the film-forming substrates, achieved through hydrogen bonds and electrostatic interactions. The addition of anthocyanins and ZnO not only enhanced the antibacterial and antioxidant properties of the film but also provided it with good pH sensitivity and color stability, making it highly promising for use in shrimp freshness monitoring. All the films were shown to be biodegradable, decomposing completely in soil within 30 days. Overall, these results suggest that the films could serve as a potential replacement for plastic food packaging and additionally monitor the freshness of food.
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