Research on pH-responsive antibacterial materials using citral-modified zinc oxide nanoparticles

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外文摘要：Objectives:With the increasing damage caused by foodborne pathogens to human health and the increasing attention given to healthy diets,novel food antimicrobial agents have been widely studied.Materials and Methods:In this study,three different morphologies of citral-modified ZnO nanoparticle antimicrobial materials were pre-pared,and the citral-modified porous ZnO nanorod antimicrobial materials with the highest loading(60.35％)and the strongest inhibitory effect(MIC=0.2-0.1 mg/mL)were screened through a series of characterization and bacterial inhibition experiments.This novel antimicrobial material has excellent and long-lasting antimicrobial properties.It inhibited Escherichia coli by 100％when stowed at 25 ℃ and protected from light for 10 d and inhibited the growth of E.coli by 58.17％after being stowed under the same conditions for 60 d.Furthermore,we tested the pH change during 24 h of E.coli growth and the pH responsiveness of the materials.Results:The results demonstrated that under the acid-producing condition of E.coligrowth,the pH-sensitive imine bond(-CH=N-)formed by the condensation of the amino of functionalized ZnO nanoparticles and citral was hydrolyzed to release the citral,which indicated that the re-lease mechanism of citral in the antibacterial material was pH-sensitive.Conclusions:The antibacterial materials in this study have broad application prospects in the field of food production and packaging in the future.Moreover,this study provides a theoretical basis for guaranteeing food quality and safety.

外文关键词：

Foodborne pathogensterilizationpH-sensitiveimine bondfood safety

作者：

Yanan Fan、Qixiang Xu、Keyu Ren、Mengge Zhai、Guozheng Xing、Yishan Song、Yongheng Zhu

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作者单位：

College of Food Science and Technology,Shanghai Ocean University,Shanghai,China

Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation,Shanghai,China

Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation(Shanghai),Ministry of Agriculture and Rural Affairs,Shanghai,China

出版年：

2024

DOI：

10.1093/fqsafe/fyae010

食品品质与安全研究(英文版)

ISSN：

年,卷(期)：2024.8(4)