The potential of violet, blue, green and red light for the inactivation of P. fluorescens as planktonic cells, individual cells on a surface and biofilms

Angarano, Valeria; Akkermans, Simen; Smet, Cindy; Chieffi, Andre; Impe, Jan Van

doi:10.1016/j.fbp.2020.07.019

Cited by 7 publications

(3 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…P. aeruginosa strains are among the most often examined microorganisms regarding visible light inactivation [ 33 ], but results for other representatives of the genus are scarce. Applying 400 nm at a dose of 100 J/cm 2 on P. fluorescens, Angarano et al [ 68 ] achieved a 0.5 log reduction, which is in good accordance with our results.…”

Section: Discussionmentioning

confidence: 99%

Enhancement of Contact Lens Disinfection by Combining Disinfectant with Visible Light Irradiation

Hoenes

Spellerberg

Heßling

2020

IJERPH

View full text Add to dashboard Cite

Multiple use contact lenses have to be disinfected overnight to reduce the risk of infections. However, several studies demonstrated that not only microorganisms are affected by the disinfectants, but also ocular epithelial cells, which come into contact via residuals at reinsertion of the lens. Visible light has been demonstrated to achieve an inactivation effect on several bacterial and fungal species. Combinations with other disinfection methods often showed better results compared to separately applied methods. We therefore investigated contact lens disinfection solutions combined with 405 nm irradiation, with the intention to reduce the disinfectant concentration of ReNu Multiplus, OptiFree Express or AOSept while maintaining adequate disinfection results due to combination benefits. Pseudomonads, staphylococci and E. coli were studied with disk diffusion assay, colony forming unit (cfu) determination and growth delay. A log reduction of 4.49 was achieved for P. fluorescens in 2 h for 40% ReNu Multiplus combined with an irradiation intensity of 20 mW/cm2 at 405 nm. For AOSept the combination effect was so strong that 5% of AOSept in combination with light exhibited the same result as 100% AOSept alone. Combination of disinfectants with visible violet light is therefore considered a promising approach, as a reduction of potentially toxic ingredients can be achieved.

show abstract

Section: Discussionmentioning

confidence: 99%

Enhancement of Contact Lens Disinfection by Combining Disinfectant with Visible Light Irradiation

Hoenes

Spellerberg

Heßling

2020

IJERPH

View full text Add to dashboard Cite

show abstract

“…This is attributed to the fact that the fluorescence peak of the MBI-CuNPs probe is located in the violet region. It has the characteristics of high energy, strong penetration and low light decay performance in solution, which makes the MBI-CuNPs probe show as being highly sensitive to Cys [23,24]. Figure 3b shows that the fluorescence properties of the MBI-CuNPs probe are stable within 37 days and can be used for practical detection.…”

Section: Characterization Of Mbi-cunpsmentioning

confidence: 99%

“…To prepare fluorescent probes with high sensitivity and good specificity for Cys, eliminating the interference of Hcy and GSH in Cys detection has become an important research direction for disease prevention. There are reports that the violet fluorescent probes have the characteristics of high energy, strong penetration and low light attenuation performance in the medium, which gives them the advantages of high sensitivity and strong anti-interference ability in biological detection [23,24]. Monovalent copper has the characteristics of good fluorescence performance and low cost, and the complexes formed with complexes containing N and S ligands have a high quantum yield and adjustable emission wavelength [25].…”

Section: Introductionmentioning

confidence: 99%

2-Mercaptobenzimidazole Functionalized Copper Nanoparticles Fluorescence Probe for Sensitivity and Selectivity Detection of Cys in Serum

Liu

Dou

Zhang

2023

Sensors

View full text Add to dashboard Cite

In this paper, a 2-mercaptobenzimidazole-copper nanoparticles (MBI-CuNPs) fluorescent probe with high performance based on 2-mercaptobenzimidazole functionalized copper nanoparticles was synthesized by a hydrothermal method and used for cysteine (Cys) detection in serum. The MBI-CuNPs probe exhibits strong fluorescence emission at 415 nm under the excitation at 200 nm, which is attributed to the metal-ligand charge transfer (MLCT) transition through the coordination of an MBI ligand and monovalent copper. Furthermore, the MBI-CuNPs probe has a high quenching fluorescence response to Cys, and shows a good linearity relationship with Cys in 0.05–65 µM, with a detection limit of 52 nM. Moreover, the MBI-CuNPs probe could eliminate the interference of biological mercaptan Hcy and GSH with a similar structure and reaction properties, due to the strong electron-donating ability of Cys, which can quench the fluorescence of the MBI-CuNPs probe. The MBI-CuNPs probe was applied to the analysis of Cys in real serum, and the absolute recovery rate was as high as 90.23–97.00%. Such a fluorescent probe with high sensitivity and selectivity has potential applications for the early prevention of various diseases caused by abnormal Cys levels.

show abstract

Non-electro-Technologies: Gamma Rays, UV Light, Ozone, Photodynamic and Membrane Processing

Ishwarya

Ahmad

Lal

et al. 2022

Food Engineering Series

View full text Add to dashboard Cite

The potential of violet, blue, green and red light for the inactivation of P. fluorescens as planktonic cells, individual cells on a surface and biofilms

Cited by 7 publications

References 65 publications

Enhancement of Contact Lens Disinfection by Combining Disinfectant with Visible Light Irradiation

Enhancement of Contact Lens Disinfection by Combining Disinfectant with Visible Light Irradiation

2-Mercaptobenzimidazole Functionalized Copper Nanoparticles Fluorescence Probe for Sensitivity and Selectivity Detection of Cys in Serum

Non-electro-Technologies: Gamma Rays, UV Light, Ozone, Photodynamic and Membrane Processing

Contact Info

Product

Resources

About