Selection of parameters for thermal coronavirus inactivation – a data-based recommendation
Coronaviruses can already be inactivated at relatively low temperatures and the available data suggest that all samples, including critical ones, can be mathematically included by a worst-case Arrhenius model.
Photoinactivation of bacteria by endogenous photosensitizers and exposure to visible light of different wavelengths – a review on existing data
This review compiles the published data on bacterial inactivation caused by visible light and endogenous photosensitizers and evaluates more than 50 published studies containing information on about 40 different bacterial species irradiated within the spectral range from 380 to 780 nm.
Improved Drinking Water Disinfection with UVC-LEDs for Escherichia Coli and Bacillus Subtilis Utilizing Quartz Tubes as Light Guide
A new approach is investigated utilizing light guidance capabilities of optical pure quartz glass in order to maximize drinking water disinfection efficiency with UVC-light-emitting diodes (LEDs).…
405 nm and 450 nm Photoinactivation of Saccharomyces cerevisiae
- K. Hoenes, M. Hess, P. Vatter, B. Spellerberg, M. Hessling
- Biology, ChemistryEuropean Journal of Microbiology & Immunology
- 1 December 2018
The results are compatible with photoinactivated Saccharomyces cerevisiae cells being in a viable but nonculturable state, and arguing against the previously suspected mechanism of cell membrane damage during photoinactivation with visible light at least for the investigated strain.
Photoinactivation of the Coronavirus Surrogate phi6 by Visible Light
Investigation of the effect of visible violet light with a wavelength of 405 nm on the coronavirus surrogate phi6 in two aqueous solutions that are free of photosensitizers finds that it reduces the phi 6 plaque‐forming unit concentration by three log‐levels.
Photoinactivation of Legionella Rubrilucens by Visible Light
- J. Schmid, K. Hoenes, M. Rath, P. Vatter, B. Spellerberg, M. Hessling
- Biology, Environmental ScienceEuropean Journal of Microbiology & Immunology
- 26 April 2017
In this study, the photoinactivation of Legionella by visible light is investigated and results were obtained for extracellular L. rubrilucens, but other Legionella species may exhibit a similar behavior.
Inactivation Effect of Violet and Blue Light on ESKAPE Pathogens and Closely Related Non-pathogenic Bacterial Species – A Promising Tool Against Antibiotic-Sensitive and Antibiotic-Resistant…
- K. Hoenes, R. Bauer, Tobias Meurle, B. Spellerberg, M. Hessling
- Biology, MedicineFrontiers in Microbiology
- 13 January 2021
Visible light irradiation is a promising approach to inactivate ESKAPE pathogens with future fields of application in prevention and therapy.
Photoinactivation Sensitivity of Staphylococcus carnosus to Visible‐light Irradiation as a Function of Wavelength
This study investigates the photoinactivation sensitivity of Staphylococcus carnosus to selected wavelengths between 390 and 500 nm in 10‐ to 25‐nm intervals and points to flavins as responsible photosensitizers, which furthermore seem to be involved at violet wavelengths.
Antimicrobial Effect of Visible Light—Photoinactivation of Legionella rubrilucens by Irradiation at 450, 470, and 620 nm
There is reason to believe that L. rubrilucens inactivation behavior is similar to that of pathogenic legionella species, and this photoinactivation might lead to new future concepts for legionella reduction and prevention in technical applications or even on or inside the human body.
Disinfection Properties of Conventional White LED Illumination and Their Potential Increase by Violet LEDs for Applications in Medical and Domestic Environments
The antimicrobial impact of visible violet and blue light has been known for more than a century but hardly been applied for purposeful pathogen reduction or prevention. The disinfecting properties…