Enhancement of 5-Aminolevulinic Acid-Mediated Photodynamic Inactivation of Using Phosphoric and Bisaminophosphinic Acids as Permeabilizing Agents.

The purpose of this work was to examine the effect of phosphoric and bisaminophosphinic acids on the effectiveness of photoinactivation of with 5-aminolevulinic acid (5-ALA) as a precursor of protoporphyrin IX. Two diode lasers λ = 404 nm (radiation intensity 26 mW cm) and λ = 630 nm (radiation intensity 55 mW cm) were used as sources of light. The most effective agent was ()-(-)-1,1'-binaphthyl-2,2'-diylhydrogen phosphate, and a significant improvement in bactericidal effect of 5-ALA-aPDI was achieved by pretreating with this compound at nontoxic concentrations of 0.

On the Possibility of Using 5-Aminolevulinic Acid in the Light-Induced Destruction of Microorganisms.

Antimicrobial photodynamic inactivation (aPDI) is a method that specifically kills target cells by combining a photosensitizer and irradiation with light at the appropriate wavelength. The natural amino acid, 5-aminolevulinic acid (5-ALA), is the precursor of endogenous porphyrins in the heme biosynthesis pathway. This review summarizes the recent progress in understanding the biosynthetic pathways and regulatory mechanisms of 5-ALA synthesis in biological hosts.

On the Effect of Non-Thermal Atmospheric Pressure Plasma Treatment on the Properties of PET Film.

The aim of the work was to investigate the effect of non-thermal plasma treatment of an ultra-thin polyethylene terephthalate (PET) film on changes in its physicochemical properties and biodegradability. Plasma treatment using a dielectric barrier discharge plasma reactor was carried out in air at room temperature and atmospheric pressure twice for 5 and 15 min, respectively. It has been shown that pre-treatment of the PET surface with non-thermal atmospheric plasma leads to changes in the physicochemical properties of this polymer.

Effect of multiple nonthermal plasma treatments of filamentous fungi on cellular phenotypic changes and phytopathogenicity.

The effect of multiple sublethal doses of non-thermal plasma treatments on fungal cells phenotypical changes and the reduction in phytopathogenicity of Fusarium oxysporum, Botrytis cinerea, and Alternaria alternata was examined. The intensity of these changes depended on the species of fungus and the number of exposures of the mycelia to the DBD plasma. Microscopic observations showed that the plasma damaged the surface of the hyphae, increased their thickness and decreased overall dry biomass of the organisms.

Correction: Maliszewska et al. On the Photo-Eradication of Methicillin-Resistant Biofilm Using Methylene Blue. 2022, , 791.

The authors wish to make the following corrections to this paper [...