Biofilm busters: Exploring the antimicrobial and antibiofilm properties of essential oils against Salmonella Enteritidis

Author:

Somrani Mariem12ORCID,Huertas Juan-Pablo1,Iguaz Asunción1ORCID,Debbabi Hajer2,Palop Alfredo1ORCID

Affiliation:

1. Department of Agricultural Engineering, Institute of Plant Biotechnology, Universidad Politécnica de Cartagena, Murcia, Spain

2. Department of AgriFood Industries, National Agronomic Institute of Tunisia, University of Carthage, Tunis, Tunisia

Abstract

This study delves into an exploration of the antimicrobial and antibiofilm properties of the essential oils (EOs) of cinnamon, garlic, and onion on Salmonella Enteritidis. Firstly, disc diffusion and minimum inhibitory concentration (MIC) techniques were employed to assess the antibacterial activity of the EOs. Additionally, the study explored the effect of these EOs on both initial cell attachment and 24 h-preformed biofilms. The crystal violet assay was implemented to evaluate biofilm biomass. The findings revealed that cinnamon EO exhibited the highest anti-biofilm activity. Furthermore, initial cell attachment inhibition at MIC ranged between 50 and 65% for the three oils, while inhibition rates on preformed structures were lower than 40% for all EOs at this MIC concentration. The study also found that the effects of these oils were dosage- and time-dependent (p < 0.05), thereby urging the adoption of these natural extracts as effective strategies for combating Salmonella biofilms.

Funder

the AGROALNEXT programme and MCIN with funding from European Union NextGenerationEU and by Fundación Séneca with funding from Comunidad Autónoma Región de Murcia (CARM).

Ministerio de Ciencia e Innovación (MCIN) of the Spanish Government and the Spanish State Research Agency

Publisher

SAGE Publications

Subject

Industrial and Manufacturing Engineering,General Chemical Engineering,Food Science

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