Transcriptomic combined with molecular dynamics simulation analysis of the inhibitory mechanism of clove essential oil against Staphylococcus aureus biofilm and its application on surface of food contact materials

IF 3.5 2区农林科学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Food and Bioproducts Processing Pub Date : 2025-01-20 DOI:10.1016/j.fbp.2025.01.009

Hong Li , Jun Li , Zichun Hua , Tariq Aziz , Ebtihal Khojah , Haiying Cui , Lin Lin

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引用次数: 0

Abstract

Staphylococcus aureus (S. aureus) can easily generate biofilm on food processing equipment surface, thus increasing the risk of food contamination. Clove essential oil (CEO) has been extensively utilized in food industry due to its safety and effectiveness against S. aureus biofilm. The current study aimed to reveal the activity of CEO against S. aureus biofilm and explore its potential molecular mechanism. The results indicated that CEO had significant inhibition effect on S. aureus biofilm. Electron microscope observation indicated that CEO could inhibit extracellular polymeric substances (EPS) and damage the 3-dimensional structure of biofilm. Based on transcriptomic and molecular dynamics simulation, it was found that eugenol (principal component of CEO) was highly enriched on the phospholipid bilayer, which in turn affects various biological processes of bacteria, such as metabolism, biofilm formation and quorum sensing. Meanwhile, according to significant difference analysis, eugenol mainly down-regulated the transcription levels of EPS synthesis-related genes (ica operon and cidA) to inhibit biofilm formation, followed by quorum sensing-related genes (agrA, agrB and agrC), sarA and sigB. Finally, a challenge test indicated that CEO with MBIC concentration could decrease the number of S. aureus on food contact surface by 10^3–4 orders of magnitude. Therefore, CEO could be a potential natural anti-biofilm material to combat S. aureus biofilm and guard food safety.

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来源期刊

Food and Bioproducts Processing 工程技术-工程：化工

CiteScore

9.70

自引率

4.30%

发文量

115

审稿时长

24 days

期刊介绍： Official Journal of the European Federation of Chemical Engineering: Part C FBP aims to be the principal international journal for publication of high quality, original papers in the branches of engineering and science dedicated to the safe processing of biological products. It is the only journal to exploit the synergy between biotechnology, bioprocessing and food engineering. Papers showing how research results can be used in engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in equipment or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of food and bioproducts processing. The journal has a strong emphasis on the interface between engineering and food or bioproducts. Papers that are not likely to be published are those: • Primarily concerned with food formulation • That use experimental design techniques to obtain response surfaces but gain little insight from them • That are empirical and ignore established mechanistic models, e.g., empirical drying curves • That are primarily concerned about sensory evaluation and colour • Concern the extraction, encapsulation and/or antioxidant activity of a specific biological material without providing insight that could be applied to a similar but different material, • Containing only chemical analyses of biological materials.