The ability of Salmonella enterica subsp. enterica strains to form biofilms on abiotic surfaces and their susceptibility to selected essential oil components

• Type: Article in International Scientific Journal
• Date: 2025

Authors

Perez-Lavalle, L (Author) Other; Anabela Borges (Author) FEUP; Gomes, IB (Author) Other; Carrasco, E (Author) Other; Valero, A (Author) Other; Simoes, M (Author) Other; Simões M (Author) FEUP; Inês Gomes (Author) FEUP

Journal

Title: Letters in Applied Microbiology

Vol. 78

ISSN: 0266-8254

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Scientific classification

FOS: Medical and Health sciences > Health sciences

CORDIS: Natural sciences > Biological sciences > Biological engineering

FOS: Natural sciences > Biological sciences

Associated Projects

LEPABE - Financiamento Plurianual 2020-2023 da Unidade de I&D LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

LEPABE - Projeto Estratégico do LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

ALiCE - ALiCE - Laboratório Associado em Engenharia Química

InnovAntiBiofilm - Boosting Sustainable Innovation in Developing New Antibiotic Adjuvants to Control Biofilm Resistance

Other information

Authenticus ID: P-018-CCS

DOI: 10.1093/lambio/ovaf032

Abstract (EN): The ability of Salmonella enterica subsp. enterica to persist and form biofilms on different surfaces can constitute a source of food contamination, being an issue of global concern. The objective of this study was to understand the biofilm formation profile of 14 S. enterica strains among different serovars and sources and to evaluate the ability of essential oil (EO) components (carveol, citronellol, and citronellal) to disinfect the biofilms formed on stainless steel and polypropylene surfaces. All the strains were able to form biofilms with counts between 5.34 to 6.78 log CFU cm(-2). Then, the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of EO components were evaluated on two selected strains. All compounds inhibited the growth of Salmonella Typhimurium (strain 1; MIC = 800-1000 mu g ml(-1)) and Salmonella Enteritidis (strain 5; MIC = 400-1000 mu g ml(-1)) and only carveol showed bactericidal activity against strains 1 and 5 (MBC = 1200 mu g ml(-1)). Biofilms were exposed to the EO components at 10 x MIC for 30 min and polypropylene surfaces were more difficult to disinfect showing reductions between 0.9 and <1.2 log CFU cm(-2). In general, the S. enterica biofilms demonstrated a significant tolerance to disinfection, demonstrating their high degree of recalcitrance on food processing surfaces.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8