Results 51 to 60 of about 5,555 (166)

Update of the list of QPS‐recommended biological agents intentionally added to food or feeds as notified to EFSA

EFSA Journal, Volume 24, Issue 1, January 2026.
Abstract The qualified presumption of safety (QPS) process was developed to provide a harmonised safety assessment approach to support EFSA Scientific Panels and Units. The QPS approach assesses the taxonomic identity, body of relevant knowledge and safety concerns of microorganisms intentionally added to the food and feed chain.
EFSA Panel on Biological Hazards (BIOHAZ), Ana Allende, Avelino Alvarez‐Ordóñez, Valeria Bortolaia, Sara Bover‐Cid, Alessandra De Cesare, Wietske Dohmen, Laurent Guillier, Liesbeth Jacxsens, Maarten Nauta, Lapo Mughini‐Gras, Jakob Ottoson, Luisa Peixe, Fernando Perez‐Rodriguez, Panagiotis Skandamis, Elisabetta Suffredini, Marianne Chemaly, Pier Sandro Cocconcelli, Pablo Salvador Fernández Escámez, Miguel Prieto Maradona, Amparo Querol, Lolke Sijtsma, Juan Evaristo Suarez, Ingvar Sundh, Fulvio Barizzone, Justine Dastouet, Nadya Doyle, Sandra Correia, Lieve Herman   +28 more
wiley   +1 more source

Characterization of Novel Broad-Host-Range Bacteriophage DLP3 Specific to Stenotrophomonas maltophilia as a Potential Therapeutic Agent

Frontiers in Microbiology, 2020
A novel Siphoviridae phage specific to the bacterial species Stenotrophomonas maltophilia was isolated from a pristine soil sample and characterized as a second member of the newly established Delepquintavirus genus.
Danielle L. Peters, Jaclyn G. McCutcheon, Jonathan J. Dennis   +2 more
doaj   +1 more source

Spontaneous Lysis in Lysogenic Staphylococci.

Experimental Biology and Medicine, 1963
SummaryCultures of lysogenic staphylococci yielded significantly higher plaque counts when plated directly on streptomycin or penicillin with antibiotic resistant indicator strains than when supernatants of centrifuged cultures were assayed. This occurs at cell concentrations that permit significant read-sorption of free phage, which are inactivated ...
E D, ROSENBLUM, M B, LAUGHLIN
openaire   +2 more sources

Drug Discovery Applications of Nitroso (Hetero)Arene Derivatives

ChemPlusChem, Volume 90, Issue 12, December 10, 2025.
Nitroso (hetero)aromatic compounds are bioactive molecules with antiviral, anticancer, neuroprotective, and antimicrobial properties. This review highlights their mechanisms of action—oxidative stress, DNA damage, and enzyme inhibition—alongside synthesis, structure–activity relationships, and toxicity challenges, offering insight into their ...
Silvia Roscales, Aurelio G. Csáky
wiley   +1 more source

Superinfection of Lysogenic Strains of Salmonella typhimurium Q1: Prophage Substitution and Double Lysogenization [PDF]

Journal of General Microbiology, 1962
SUMMARY: Strains of Salmonella typhimurium Q1, lysogenized with type A phages, were superinfected with the heterologous free phages of the same group. This produced lysis (productive or vegetative development) and prophage change (either prophage substitution or double lysogenization) in a constant pattern.
J S, BOYD, D E, BIRDWELL
openaire   +2 more sources

Refining Viral Production Estimation

Environmental Microbiology Reports, Volume 17, Issue 6, December 2025.
Viral production assays are generally employed to decipher viral‐mediated bacterial mortality rates and prevalence of lysogeny in aquatic ecosystems. Commonly used analytical approaches—linear regression and VIPCAL—often provide significantly different estimates.
Hisham M. Shaikh, Jonas Van den Bremt, Lisa Schellenberg, Salvador J. Fernández Bejarano, Maarten De Rijcke, Corina P. D. Brussaard   +5 more
wiley   +1 more source

Boosting Dibenzothiophene Biodesulfurization Through Implantation of a Refactored DBT Pathway in a Tailored Pseudomonas putida Chassis

Microbial Biotechnology, Volume 18, Issue 9, September 2025.
This study engineered a Pseudomonas putida strain to efficiently remove sulfur from dibenzothiophene (DBT) by reordering and optimising the dsz operon from Rhodococcus qingshengii IGTS8, enhancing catalytic activity and stability. The modified strain, P. putida DS006, showed high desulfurization efficiency in model biodesulfurization systems.
Panayiotis D. Glekas, Ioannis Papageorgopoulos, Stamatios G. Damalas, Víctor de Lorenzo, Diomi Mamma, Esteban Martínez‐García, Dimitris G. Hatzinikolaou   +6 more
wiley   +1 more source

THE ESTABLISHMENT OF LYSOGENICITY IN ESCHERICHIA COLI [PDF]

Journal of Bacteriology, 1953
When a population of sensitive bacteria is exposed to infection by a temperate phage, a large number of cells are not lysed and give rise to colonies containing lysogenic cells. Some of the factors influencing the probability that an infected cell of Escherichia coli, strain K12S, will give a lysogenic response are reported here.
openaire   +2 more sources

The TonB‐Dependent Transport System Facilitates the Uptake of Inorganic Metal Mediators in Pseudomonas putida KT2440 in a Bioelectrochemical System

Microbial Biotechnology, Volume 18, Issue 8, August 2025.
Mediator‐based extracellular electron transfer in Pseudomonas putida KT2440 relies on the TonB‐dependent system for effective mediator (ferricyanide) transport. Transcriptomic and functional analyses confirmed its key role, while OprF overexpression enhanced membrane permeability and current output. These findings clarify mediator uptake mechanisms and
Anna Weimer, Jens Krömer, Bin Lai, Christoph Wittmann   +3 more
wiley   +1 more source

Mathematical modelling of CRISPR-Cas system effects on biofilm formation

Journal of Biological Dynamics, 2017
Clustered regularly interspaced short palindromic repeats (CRISPR), linked with CRISPR associated (Cas) genes, can confer adaptive immunity to bacteria, against bacteriophage infections.
Qasim Ali, Lindi M. Wahl
doaj   +1 more source