Antimicrobial Activity of Novel Deep Eutectic Solvents

Herein, we utilized several deep eutectic solvents (DES) that were based on hydrogen donors and hydrogen acceptors for their antibacterial application. These DES were tested for their bactericidal activities against Gram-positive (<i>Streptococcus pyogenes, Bacillus cereus, Streptococcus pneum...

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Main Authors: Noor Akbar, Naveed Ahmed Khan, Taleb Ibrahim, Mustafa Khamis, Amir Sada Khan, Ahmad M. Alharbi, Hasan Alfahemi, Ruqaiyyah Siddiqui
Format: Article
Language:English
Published: MDPI AG 2023-02-01
Series:Scientia Pharmaceutica
Subjects:
Online Access:https://www.mdpi.com/2218-0532/91/1/9
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author Noor Akbar
Naveed Ahmed Khan
Taleb Ibrahim
Mustafa Khamis
Amir Sada Khan
Ahmad M. Alharbi
Hasan Alfahemi
Ruqaiyyah Siddiqui
author_facet Noor Akbar
Naveed Ahmed Khan
Taleb Ibrahim
Mustafa Khamis
Amir Sada Khan
Ahmad M. Alharbi
Hasan Alfahemi
Ruqaiyyah Siddiqui
author_sort Noor Akbar
collection DOAJ
description Herein, we utilized several deep eutectic solvents (DES) that were based on hydrogen donors and hydrogen acceptors for their antibacterial application. These DES were tested for their bactericidal activities against Gram-positive (<i>Streptococcus pyogenes, Bacillus cereus, Streptococcus pneumoniae</i>, and methicillin-resistant <i>Staphylococcus aureus</i>) and Gram-negative (<i>Escherichia coli</i> K1, <i>Klebsiella pneumoniae</i>, <i>Pseudomonas aeruginosa</i>, and <i>Serratia marcescens</i>) bacteria. Using lactate dehydrogenase assays, DES were evaluated for their cytopathic effects towards human cells. Results from antibacterial tests revealed that DES prepared from the combination of methyl-trioctylammonium chloride and glycerol (DES-4) and DES prepared form methyl-trioctylammonium chloride and fructose (DES-11) at a 2 µL dose showed broad-spectrum antibacterial behavior and had the highest bactericidal activity. Moreover, DES-4 showed 40% and 68% antibacterial activity against <i>P. aeruginosa</i> and <i>E. coli</i> K1, respectively. Similarly, DES-11 eliminated 65% and 61% <i>E. coli</i> K1 and <i>P. aeruginosa</i>, respectively. Among Gram-positive bacteria, DES-4 showed important antibacterial activity, inhibiting 75% of <i>B. cereus</i> and 51% of <i>S. pneumoniae</i>. Likewise, DES-11 depicted 70% <i>B. cereus</i> and 50% <i>S. pneumoniae</i> bactericidal effects. Finally, the DES showed limited cytotoxic properties against human cell lines with the exception of the DES prepared from Methyltrioctylammonium chloride and Citric acid (DES-10), which had 88% cytotoxic effects. These findings suggest that DES depict potent antibacterial efficacies and cause minimal damage to human cells. It can be concluded that the selected DES in this study could be utilized as valuable and novel antibacterial drugs against bacterial infections. In future work, the mechanisms for bactericides and the cytotoxicity effects of these DES will be investigated.
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spelling doaj.art-599d7b40ef1c4f958b15f70e6c1a0f192023-11-17T13:42:28ZengMDPI AGScientia Pharmaceutica0036-87092218-05322023-02-01911910.3390/scipharm91010009Antimicrobial Activity of Novel Deep Eutectic SolventsNoor Akbar0Naveed Ahmed Khan1Taleb Ibrahim2Mustafa Khamis3Amir Sada Khan4Ahmad M. Alharbi5Hasan Alfahemi6Ruqaiyyah Siddiqui7College of Arts and Sciences, American University of Sharjah, University City, Sharjah 26666, United Arab EmiratesDepartment of Clinical Sciences, College of Medicine, University of Sharjah, University City, Sharjah P.O. Box 27272, United Arab EmiratesDepartment of Chemical Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab EmiratesCollege of Arts and Sciences, American University of Sharjah, University City, Sharjah 26666, United Arab EmiratesDepartment of Chemical Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab EmiratesDepartment of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi ArabiaDepartment of Medical Microbiology, Faculty of Medicine, Al-Baha University, P.O. Box. 1988, Al-Baha 65799, Saudi ArabiaCollege of Arts and Sciences, American University of Sharjah, University City, Sharjah 26666, United Arab EmiratesHerein, we utilized several deep eutectic solvents (DES) that were based on hydrogen donors and hydrogen acceptors for their antibacterial application. These DES were tested for their bactericidal activities against Gram-positive (<i>Streptococcus pyogenes, Bacillus cereus, Streptococcus pneumoniae</i>, and methicillin-resistant <i>Staphylococcus aureus</i>) and Gram-negative (<i>Escherichia coli</i> K1, <i>Klebsiella pneumoniae</i>, <i>Pseudomonas aeruginosa</i>, and <i>Serratia marcescens</i>) bacteria. Using lactate dehydrogenase assays, DES were evaluated for their cytopathic effects towards human cells. Results from antibacterial tests revealed that DES prepared from the combination of methyl-trioctylammonium chloride and glycerol (DES-4) and DES prepared form methyl-trioctylammonium chloride and fructose (DES-11) at a 2 µL dose showed broad-spectrum antibacterial behavior and had the highest bactericidal activity. Moreover, DES-4 showed 40% and 68% antibacterial activity against <i>P. aeruginosa</i> and <i>E. coli</i> K1, respectively. Similarly, DES-11 eliminated 65% and 61% <i>E. coli</i> K1 and <i>P. aeruginosa</i>, respectively. Among Gram-positive bacteria, DES-4 showed important antibacterial activity, inhibiting 75% of <i>B. cereus</i> and 51% of <i>S. pneumoniae</i>. Likewise, DES-11 depicted 70% <i>B. cereus</i> and 50% <i>S. pneumoniae</i> bactericidal effects. Finally, the DES showed limited cytotoxic properties against human cell lines with the exception of the DES prepared from Methyltrioctylammonium chloride and Citric acid (DES-10), which had 88% cytotoxic effects. These findings suggest that DES depict potent antibacterial efficacies and cause minimal damage to human cells. It can be concluded that the selected DES in this study could be utilized as valuable and novel antibacterial drugs against bacterial infections. In future work, the mechanisms for bactericides and the cytotoxicity effects of these DES will be investigated.https://www.mdpi.com/2218-0532/91/1/9antibiotic resistancemulti-drug resistancedeep eutectic solventsantibacterialcytotoxicity
spellingShingle Noor Akbar
Naveed Ahmed Khan
Taleb Ibrahim
Mustafa Khamis
Amir Sada Khan
Ahmad M. Alharbi
Hasan Alfahemi
Ruqaiyyah Siddiqui
Antimicrobial Activity of Novel Deep Eutectic Solvents
Scientia Pharmaceutica
antibiotic resistance
multi-drug resistance
deep eutectic solvents
antibacterial
cytotoxicity
title Antimicrobial Activity of Novel Deep Eutectic Solvents
title_full Antimicrobial Activity of Novel Deep Eutectic Solvents
title_fullStr Antimicrobial Activity of Novel Deep Eutectic Solvents
title_full_unstemmed Antimicrobial Activity of Novel Deep Eutectic Solvents
title_short Antimicrobial Activity of Novel Deep Eutectic Solvents
title_sort antimicrobial activity of novel deep eutectic solvents
topic antibiotic resistance
multi-drug resistance
deep eutectic solvents
antibacterial
cytotoxicity
url https://www.mdpi.com/2218-0532/91/1/9
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