Biocide Potentiation Using Cinnamic Phytochemicals and Derivatives

Surface disinfection is of utmost importance in the prevention of bacterial infections. This study aims to assess the ability of ten phytochemicals and related derivatives as potentiators of two commonly used biocides—cetyltrimethylammonium bromide (CTAB) and lactic acid (LA). LA in combin...

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Main Authors: Joana F. Malheiro, Jean-Yves Maillard, Fernanda Borges, Manuel Simões
Format: Article
Language:English
Published: MDPI AG 2019-10-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/24/21/3918
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author Joana F. Malheiro
Jean-Yves Maillard
Fernanda Borges
Manuel Simões
author_facet Joana F. Malheiro
Jean-Yves Maillard
Fernanda Borges
Manuel Simões
author_sort Joana F. Malheiro
collection DOAJ
description Surface disinfection is of utmost importance in the prevention of bacterial infections. This study aims to assess the ability of ten phytochemicals and related derivatives as potentiators of two commonly used biocides&#8212;cetyltrimethylammonium bromide (CTAB) and lactic acid (LA). LA in combination with cinnamic, hydrocinnamic, &#945;-methylcinnamic, and &#945;-fluorocinnamic acids had a factional inhibitory concentration index (FICI) &#8804; 1 for <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. Several phytochemicals/derivatives in combination with biocides improved the biocidal efficacy against early sessile bacteria. The most effective combination was LA with allyl cinnamate (2.98 &#177; 0.76 log CFU&#183;cm<sup>&#8722;2</sup> reduction) against <i>E. coli</i>. The combination with CTAB was successful for most phytochemicals/derivatives with a maximum bactericidal efficacy against sessile <i>E. coli</i> when combined with allyl cinnamate (2.20 &#177; 0.07 log CFU&#183;cm<sup>&#8722;2</sup> reduction) and for <i>S. aureus</i> when combined with &#945;-methylcinnamic acid (1.68 &#177; 0.30 log CFU&#183;cm<sup>&#8722;2</sup> reduction). This study highlights the potential of phytochemicals and their derivatives to be used in biocide formulations.
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spelling doaj.art-64db32631a264bd5803b83c147a416862022-12-21T18:20:10ZengMDPI AGMolecules1420-30492019-10-012421391810.3390/molecules24213918molecules24213918Biocide Potentiation Using Cinnamic Phytochemicals and DerivativesJoana F. Malheiro0Jean-Yves Maillard1Fernanda Borges2Manuel Simões3LEPABE, Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, PortugalCardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, Wales CF10 3NB, UKCIQUP, Department of Chemistry and Biochemistry, Faculty of Sciences University of Porto, Rua do Campo Alegre, 4169-007 Porto, PortugalLEPABE, Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, PortugalSurface disinfection is of utmost importance in the prevention of bacterial infections. This study aims to assess the ability of ten phytochemicals and related derivatives as potentiators of two commonly used biocides&#8212;cetyltrimethylammonium bromide (CTAB) and lactic acid (LA). LA in combination with cinnamic, hydrocinnamic, &#945;-methylcinnamic, and &#945;-fluorocinnamic acids had a factional inhibitory concentration index (FICI) &#8804; 1 for <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. Several phytochemicals/derivatives in combination with biocides improved the biocidal efficacy against early sessile bacteria. The most effective combination was LA with allyl cinnamate (2.98 &#177; 0.76 log CFU&#183;cm<sup>&#8722;2</sup> reduction) against <i>E. coli</i>. The combination with CTAB was successful for most phytochemicals/derivatives with a maximum bactericidal efficacy against sessile <i>E. coli</i> when combined with allyl cinnamate (2.20 &#177; 0.07 log CFU&#183;cm<sup>&#8722;2</sup> reduction) and for <i>S. aureus</i> when combined with &#945;-methylcinnamic acid (1.68 &#177; 0.30 log CFU&#183;cm<sup>&#8722;2</sup> reduction). This study highlights the potential of phytochemicals and their derivatives to be used in biocide formulations.https://www.mdpi.com/1420-3049/24/21/3918biocidedisinfectionphytochemicalspotentiationsessile cells
spellingShingle Joana F. Malheiro
Jean-Yves Maillard
Fernanda Borges
Manuel Simões
Biocide Potentiation Using Cinnamic Phytochemicals and Derivatives
Molecules
biocide
disinfection
phytochemicals
potentiation
sessile cells
title Biocide Potentiation Using Cinnamic Phytochemicals and Derivatives
title_full Biocide Potentiation Using Cinnamic Phytochemicals and Derivatives
title_fullStr Biocide Potentiation Using Cinnamic Phytochemicals and Derivatives
title_full_unstemmed Biocide Potentiation Using Cinnamic Phytochemicals and Derivatives
title_short Biocide Potentiation Using Cinnamic Phytochemicals and Derivatives
title_sort biocide potentiation using cinnamic phytochemicals and derivatives
topic biocide
disinfection
phytochemicals
potentiation
sessile cells
url https://www.mdpi.com/1420-3049/24/21/3918
work_keys_str_mv AT joanafmalheiro biocidepotentiationusingcinnamicphytochemicalsandderivatives
AT jeanyvesmaillard biocidepotentiationusingcinnamicphytochemicalsandderivatives
AT fernandaborges biocidepotentiationusingcinnamicphytochemicalsandderivatives
AT manuelsimoes biocidepotentiationusingcinnamicphytochemicalsandderivatives