Silver nanoparticle-functionalized covalent organic frameworks for the inhibition of foodborne pathogenic bacteria and their application in green grape preservation

Jiayi Zhou; Sai Zhang; Yu Zhang; Tianliang Liu; Shuying Yang; Gaopeng Lv; Yaping Wang; Kewei Feng; Yahong Yuan; Tianli Yue; Qinglin Sheng

doi:10.1016/j.foodchem.2024.141310

Silver nanoparticle-functionalized covalent organic frameworks for the inhibition of foodborne pathogenic bacteria and their application in green grape preservation

Food Chem. 2025 Jan 15;463(Pt 2):141310. doi: 10.1016/j.foodchem.2024.141310. Epub 2024 Sep 16.

Authors

Jiayi Zhou¹, Sai Zhang², Yu Zhang¹, Tianliang Liu³, Shuying Yang¹, Gaopeng Lv³, Yaping Wang¹, Kewei Feng¹, Yahong Yuan¹, Tianli Yue⁴, Qinglin Sheng⁵

Affiliations

¹ College of Food Science and Technology, Northwest University, Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering/Research Center of Food Safety Risk Assessment and Control, Xi'an, Shaanxi 710069, China.
² Key Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility, Shaanxi University of Chinese Medicine, Xi'an 712046, China.
³ Xi'an Ice Peak Beverage Co., Ltd., Xi'an, Shaanxi 710043, China.
⁴ College of Food Science and Technology, Northwest University, Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering/Research Center of Food Safety Risk Assessment and Control, Xi'an, Shaanxi 710069, China. Electronic address: yuetl@nwu.edu.cn.
⁵ College of Food Science and Technology, Northwest University, Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering/Research Center of Food Safety Risk Assessment and Control, Xi'an, Shaanxi 710069, China. Electronic address: qlsheng@nwu.edu.cn.

PMID: 39303470
DOI: 10.1016/j.foodchem.2024.141310

Abstract

Foodborne pathogens continue to pose a significant threat to human health. This study aims to enhance the antimicrobial activity of low-dose silver nanoparticles (AgNPs) against foodborne pathogens and use the enhanced AgNPs to preserve green grapes. A chemical delivery carrier for covalent organic frameworks (COFs) impregnated with AgNPs was developed. We investigated the bacteriostatic properties (minimum bacteriostatic concentration, bacteriostatic growth curve), the mechanism of action of the bacteriostatic agent, and the performance of the bacteriostatic film. The bacteriostatic preservation rate of the AgNPs@COFs composite on green grapes was evaluated. The minimum bacteriostatic concentration of the AgNPs@COFs composite was 10 μg/mL, and the bacteriostatic rate varied between 94.01 % and 98.77 %. The developed antibacterial AgNPs@COFs composite has potential applications in food packaging and preservation.

Keywords: Antibacterial activity; COFs; Foodborne pathogens; Green grapes; Silver nanoparticles.

MeSH terms

Anti-Bacterial Agents* / chemistry
Anti-Bacterial Agents* / pharmacology
Bacteria / drug effects
Bacteria / growth & development
Food Microbiology
Food Packaging / instrumentation
Food Preservation* / methods
Metal Nanoparticles* / chemistry
Metal-Organic Frameworks* / chemistry
Metal-Organic Frameworks* / pharmacology
Microbial Sensitivity Tests*
Silver* / chemistry
Silver* / pharmacology
Vitis* / chemistry
Vitis* / microbiology

Substances

Silver
Anti-Bacterial Agents
Metal-Organic Frameworks