Study of the Antibacterial Activity of Rich Polyphenolic Extracts Obtained from against Foodborne Pathogens.

Antibiotics (Basel)

Department of Microbiology and Parasitology, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.

Published: November 2023


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Article Abstract

Natural extracts containing high polyphenolic concentrations may act as good antimicrobials for their antibacterial and antibiofilm activity. The present research characterizes two hydro-organic extracts with high polyphenolic content, obtained from the shrub as antipathogenic candidates. As a result of their own composition, both extracts, LE050 and PG050, have shown pronounced bioactivities with potential uses, especially in agricultural, livestock production, food manufacturing, and pharmaceutical industries. Polyphenolic compounds were extracted by using adjusted hydro-organic solvent mixtures. These extracts' in vitro antimicrobial activity was evaluated on Gram-positive and Gram-negative pathogenic bacteria, giving special attention to those involved in food contamination. Due to this, the biofilm dispersion was assessed on , and . The extracts showed antimicrobial activity against the pathogenic species tested, presenting IC50 values between 0.625-20% /. Different behaviors have been detected between both extracts, probably linked to their distinct polyphenol composition, being LE050 extract the one with most promising bioactive applications. Finally, the results from the biofilm dispersion assays reveal that the extracts exhibit a good antibiofilm activity against the pathogenic bacteria tested.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10669525PMC
http://dx.doi.org/10.3390/antibiotics12111645DOI Listing

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