On Plasma Activated Acetyl Donors:Comparing the Antibacterial Efficacy of Tetraacetylethylenediamine and Pentaacetate Glucose

Szili, Endre J. and Patenall, Bethany L. and Fellows, Adrian and Mistry, Dharmit and Jenkins, A. Toby A. and Short, Robert D. and Ghimire, Bhagirath (2022) On Plasma Activated Acetyl Donors:Comparing the Antibacterial Efficacy of Tetraacetylethylenediamine and Pentaacetate Glucose. PLASMA, 5 (4). pp. 423-435. ISSN 2571-6182

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Abstract

The study compares how acetyl donor molecules tetraacetylethylenediamine (TAED) and pentaacetate glucose (PAG) improve the antibacterial efficacy of solutions activated with a low-temperature atmospheric-pressure argon plasma jet. Plasma activation of solubilised TAED and PAG produce solutions with different chemical compositions and oxidative potentials. Both acetyl donor molecules enhance the hydrogen peroxide (H2O2) concentration in solution with TAED being more effective compared to PAG. However, PAG is more effective at forming peracetic acid (PAA) from reaction of its acetyl donor groups with plasma generated H2O2. The enhanced oxidative potential of plasma activated TAED and PAG solutions were shown to significantly improve bactericidal activity against common wound pathogens Gram-negative Pseudomonas aeruginosa and Gram-positive Staphylococcus aureus compared to plasma activated water produced without acetyl donors. Furthermore, the oxidative capacity of plasma activated PAG was least affected by the bacterial oxidative defence enzyme catalase, attributed to the high concentration of PAA produced in this formulation. Overall, the above data show that acetyl donors may help improve next generation of antimicrobial formulations produced by plasma, which might help combat increasing problems of antimicrobial resistance.

Item Type:
Journal Article
Journal or Publication Title:
PLASMA
Subjects:
ID Code:
178744
Deposited By:
Deposited On:
07 Nov 2022 13:20
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Nov 2022 12:02