Results 231 to 240 of about 587,022 (279)

Advances on antimicrobial photodynamic inactivation mediated by Zn(II) porphyrins

Journal of Photochemistry and Photobiology C: Photochemistry Reviews, 2021
Over the years, microorganisms have developed several resistance mechanisms against standard treatments, thus limiting the effect of drugs and rendering ineffective therapies.
T. H. Souza, J. F. Sarmento-Neto, S. O. Souza, Bruno L Raposo, B. P. Silva, C. P. Borges, B. Santos, Paulo E. Cabral Filho, J. Rebouças, A. Fontes   +9 more
semanticscholar   +1 more source

Buckminsterfullerene and photodynamic inactivation of viruses

Reviews in Medical Virology, 1998
The development of new virus inactivation procedures has become an area of growing interest mainly due to increased demands concerning the safety of biological products. Photochemical processes represent the most promising methods for the future to inactivate viruses. In these methods, dyes are the most widely used photosensitising reagents.
Käsermann F, Kempf C
openaire   +3 more sources

Dual-species biofilms formation of Vibrio parahaemolyticus and Shewanella putrefaciens and their tolerance to photodynamic inactivation

Food Control, 2021
Bacteria frequently coexist in complex mixed-species biofilms, and the interspecies interactions highly determine their structure and sensitivity to external stress. Using a dual-species biofilms formed by the pathogen V. parahaemolyticus and spoilage S.
Li Tan, Huihui Li, Bowen Chen, Jiaming Huang, Yufeng Li, Hua Zheng, Haiquan Liu, Yong Zhao, Jing Jing Wang   +8 more
semanticscholar   +1 more source

Photodynamic inactivation of pathogenic Gram-negative and Gram-positive bacteria mediated by Si(IV) phthalocyanines bearing axial ammonium units.

Journal of Photochemistry and Photobiology. B: Biology, 2022
The photodynamic inactivation (PDI) of microorganisms has gained interest as an efficient option for conventional antibiotic treatments. Recently, Si(IV) phthalocyanines (SiPcs) have been highlighted as promising photosensitizers (PSs) to the PDI of ...
Sara R. D. Gamelas, Cátia Vieira, Maria Bartolomeu, M. A. Faustino, J. Tomé, A. Tomé, A. Almeida, Leandro M. O. Lourenço   +7 more
semanticscholar   +1 more source

Co-crystallization of curcumin for improved photodynamic inactivation of Vibrio parahaemolyticus and its application for the preservation of cooked clams.

Journal of food microbiology, 2022
Curcumin (CUR) is a natural active product widely used as photosensitizer in photodynamic inactivation (PDI) due to low toxicity and low cost. However, the main challenge that limit the efficacy of CUR in PDI are its low solubility in water medium and ...
Weiming Gu, Dan Liu, Jianxia Sun
semanticscholar   +1 more source

Reduction of biofilm and pathogenic microorganisms using curcumin-mediated photodynamic inactivation to prolong food shelf-life.

Journal of food microbiology
Pathogenic microbial contamination (bacteria and fungi) in food products during production poses a significant global health risk, leading to food waste, greenhouse gas emissions, and aesthetic and financial losses.
Angga Pramana, Afrinal Firmanda, I. Arnata, D. Sartika, E. O. Sari   +4 more
semanticscholar   +1 more source

Photodynamic Inactivation of Staphylococcus aureus Using Aloe-emodin as Photosensitizer.

Food Research International
Aloe-emodin (AE) is a natural compound with photodynamic properties. The aim of this study was to investigate the inhibitory effect of AE-mediated photodynamic inactivation (PDI) on Staphylococcus aureus (S. aureus).
Jiali Wu, Yaokun Pang, Dan Liu, Jianxia Sun, Weibin Bai   +4 more
semanticscholar   +1 more source

Antimicrobial photodynamic inactivation of wastewater microorganisms by halogenated indole derivative capped zinc oxide.

Environmental Research, 2022
Novel 5-bromoindole (5B)-capped zinc oxide (ZnO) nanoparticles (5BZN) were synthesized to improve the antibacterial, antibiofilm, and disinfection processes for the control of microorganisms in wastewater treatment.
R. Manoharan, C. J. Raorane, Fahmida Ishaque, Y. Ahn   +3 more
semanticscholar   +1 more source

PHOTODYNAMIC INACTIVATION OF CHINESE HAMSTER CELLS

Photochemistry and Photobiology, 1983
Abstract— Visible light exposures have been shown to kill acriflavine bound Chinese hamster cells. Such killing was enhanced when (a) dye was present in the medium during irradiation and (b) the pH of the medium was 8.5, instead of the normal 7.5 during the exposure.
T, Ganguly, S B, Bhattacharjee
openaire   +2 more sources

Photodynamic inactivation and its repair in mycoplasmas

Biochimica et Biophysica Acta (BBA) - General Subjects, 1978
Photodynamic inactivation is the loss in viability observed when organic dye-treated cells are exposed to visible light and molecular oxygen. The photodynamic inactivation of mycoplasmas, the smallest free living cells, has been studied. Depending on the extent of inactivation in Acholeplasma laidlawii, photodynamic induced damage can be repaired if ...
U, Chaudhuri, J, Das, J, Maniloff
openaire   +2 more sources