Application and characterization of light-emitting diodes for photodynamic inactivation of bacteria

Patrycja Ogonowska , Agata Woźniak , Michał Pierański , Tomasz Wasylew , Piotr Kwiek , M. Brasel , Mariusz Grinholc , Joanna Nakonieczna


Light- and photosensitizer-based antimicrobial photodynamic therapy (aPDI) is a very promising approach to control microbial infections. Other applications of aPDI are also being studied, for example, in water disinfection or food preservation. Because this technology is based on the use of light, the proper characterization of light sources is of prime importance. The aim of this study was to prepare and characterize three irradiation systems constructed for research purposes. These LED-based light sources produce visible light in the range of blue, green and red wavelengths. The efficacy and light distribution produced by the light sources were verified on a Staphylococcus aureus model sensitized with three photosensitizers: protoporphyrin IX diarginate, N-methylpyrrolidinium fullerene iodide (Full), and rose bengal. Antimicrobial blue light treatment was likewise investigated. The survival of bacterial cells after photoinactivation was determined for irradiance at three power densities. Based on the proper characterization of light emitted by each LED at each point of the illuminated area, a homogeneous distribution of light can be achieved, which is crucial for precise dosimetry.
Author Patrycja Ogonowska (IFB)
Patrycja Ogonowska,,
- Intercollegiate Faculty of Biotechnology UG
, Agata Woźniak (IFB)
Agata Woźniak,,
- Intercollegiate Faculty of Biotechnology UG
, Michał Pierański (IFB)
Michał Pierański,,
- Intercollegiate Faculty of Biotechnology UG
, Tomasz Wasylew (IFB)
Tomasz Wasylew,,
- Intercollegiate Faculty of Biotechnology UG
, Piotr Kwiek (FMPI/IEP)
Piotr Kwiek,,
- Institute of Experimental Physics
, M. Brasel
M. Brasel,,
, Mariusz Grinholc (IFB/IB/DBiotech)
Mariusz Grinholc,,
- Department of Biotechnology
, Joanna Nakonieczna (IFB/IB/DBiotech)
Joanna Nakonieczna,,
- Department of Biotechnology
Journal seriesLighting Research & Technology, ISSN 1477-1535, (N/A 70 pkt)
Issue year2019
Publication size in sheets0.60
ASJC Classification2208 Electrical and Electronic Engineering
Languageen angielski
Score (nominal)70
Score sourcejournalList
ScoreMinisterial score = 70.0, 27-05-2020, ArticleFromJournal
Publication indicators WoS Citations = 5.000; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.373; WoS Impact Factor: 2018 = 2.311 (2) - 2018=2.549 (5)
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