Preparation and Properties of Silica Nanoparticles/Tea Polyphenol/Chitosan Edible Composite Film

ZHENG Ting; WANG Zheng; JIANG Yuqi; LUO Xinran; LONG Zhiyu; HE Chenyang; NAN Guohui; HUANG Peng

doi:10.19554/j.cnki.1001-3563.2025.21.007

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (21) : 59-69. DOI: 10.19554/j.cnki.1001-3563.2025.21.007

Advanced Materials

Preparation and Properties of Silica Nanoparticles/Tea Polyphenol/Chitosan Edible Composite Film

ZHENG Ting^1,2, WANG Zheng^1,3, JIANG Yuqi¹, LUO Xinran¹, LONG Zhiyu², HE Chenyang², NAN Guohui¹, HUANG Peng^1,2*

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Abstract

To improve the mechanical properties of chitosan-based edible films, the work aims to develop a food preservation film with both antibacterial and antioxidant properties and provide a theoretical basis for its application. Chitosan (CS), tea polyphenols (TP), and silica nanoparticles (Si NPs) were used as the film-forming substrates. The tensile strength, elongation at break, and water vapour transmission rate were used as the evaluation indexes. The Si NPs/TP/CS composite film preparation process was optimized by one-way and response surface tests. Subsequently, the microstructure, bacteriostatic, antioxidant and degradation properties of the composite film were investigated. When the formulation was 0.027 g/100 mL Si NPs, 0.147 g/100 mL TP, and 2.560 g/100 mL CS, the edible composite film prepared had a light transmittance of 85.93%, a water vapour transmission rate of 0.36 g∙mm/(m²∙h∙Kpa), a dissolution degree of 105.87%, a tensile strength of 4.86 MPa and a elongation at break of 97.01%, and its microstructure was smooth, continuous, homogeneous and well dispersed, with a removal rate of 70.64% for DPPH·, a certain inhibitory effect on Penicillium and Aspergillus flavus, and good degradability by microorganisms in the soil. The Si NPs/TP/CS composite film prepared in this study has good mechanical properties and functional properties, which lays the foundation for its application in fruit and vegetable preservation.

Key words

response surface / chitosan / tea polyphenols / silica nanoparticles / edible film / degradable

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ZHENG Ting, WANG Zheng, JIANG Yuqi, LUO Xinran, LONG Zhiyu, HE Chenyang, NAN Guohui, HUANG Peng. Preparation and Properties of Silica Nanoparticles/Tea Polyphenol/Chitosan Edible Composite Film[J]. Packaging Engineering. 2025, 46(21): 59-69 https://doi.org/10.19554/j.cnki.1001-3563.2025.21.007

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