Results 51 to 60 of about 1,020 (156)

Molecular Chain Elongation Mechanism for n‐Caproate Biosynthesis by Megasphaera Hexanoica

Advanced Science, Volume 12, Issue 44, November 27, 2025.
The medium‐chain carboxylate‐producing microbe Megasphaera hexanoica is analyzed through genomics, transcriptomics, and metabolic engineering. The n‐caproate biosynthetic pathway is reconstructed in Escherichia coli, highlighting MhTHL as a key β‐ketothiolase. Structural analysis and mutagenesis reveal that MhTHL has a distinct substrate‐binding pocket,
Byoung Seung Jeon, Eun‐Jung Kim, Hogyun Seo, Hyunjin Kim, Seungjin Shin, Caroline Schlaiß, Largus T. Angenent, Kyung‐Jin Kim, Byoung‐In Sang   +8 more
wiley   +1 more source

Safety evaluation of the food enzyme lysozyme from hens' eggs

EFSA Journal, Volume 23, Issue 11, November 2025.
Abstract The food enzyme lysozyme (peptidoglycan N‐acetylmuramoylhydrolase; EC 3.2.1.17) is produced from hens' eggs by E.P.S. S.P.A. Egg Powder Specialists. No issue of concern was identified from the food enzyme manufacturing process. It is intended to be used in three food manufacturing processes. The dietary exposure was estimated to be up to 6.943
EFSA Panel on Food Enzymes (FEZ), Holger Zorn, José Manuel Barat Baviera, Claudia Bolognesi, Francesco Catania, Gabriele Gadermaier, Ralf Greiner, Baltasar Mayo, Alicja Mortensen, Yrjö Henrik Roos, Marize L. M. Solano, Henk Van Loveren, Laurence Vernis, Daniele Cavanna, Cristina Fernández‐Fraguas, Rita Ferreira De Sousa, Giulio di Piazza, Yi Liu   +17 more
wiley   +1 more source

Biochemical and Immunological Analyses of the Flagellin of Clostridium tyrobutyricum ATCC 25755 [PDF]

Microbiology and Immunology, 1998
AbstractThe monoclonal antibody 21E7‐B12 (IgG3) can be used in a direct method of Clostridium tyrobutyricum detection based on an immunoenzymatic assay. Immunoelectron microscopy demonstrated that the 21E7‐B12 antibody recognized the surface‐exposed epitopes on the flagellar filaments of C. tyrobutyricum.
F, Arnold, L, Bédouet, P, Batina, G, Robreau, F, Talbot, P, Lécher, R, Malcoste   +6 more
openaire   +2 more sources

Interaction Between Microbiota and Immunity: Molecular Mechanisms, Biological Functions, Diseases, and New Therapeutic Opportunities

MedComm, Volume 6, Issue 7, July 2025.
This review systematically concludes the interaction between microbiota and immunity. We introduce six phyla: Bacteroidetes, Firmicutes, Actinobacteria, Proteobacteria, Fusobacteria, and Verrucomicrobia. We also elucidate molecular mechanisms, biological functions, diseases, and new therapeutic opportunities between microbiota and immunity. .
Jingjing Zeng, Zimeng He, Guoqing Wang, Yuxin Ma, Feng Zhang   +4 more
wiley   +1 more source

Update of the list of qualified presumption of safety (QPS) recommended microbiological agents intentionally added to food or feed as notified to EFSA 22: Suitability of taxonomic units notified to EFSA until March 2025

EFSA Journal, Volume 23, Issue 7, July 2025.
Abstract The qualified presumption of safety (QPS) process was developed to assess the safety of microorganisms used in food and feed chains. During the period covered by this Statement, no new information warranted changes to the status of previously recommended QPS taxonomic units.
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, Pier Sandro Cocconcelli, Pablo Salvador Fernández Escámez, Miguel Prieto Maradona, Amparo Querol, Lolke Sijtsma, Juan Evaristo Suarez, Marianne Chemaly, Ingvar Sundh, Fulvio Barizzone, Justine Dastouet, Nadya Doyle, Sandra Correia, Lieve Herman   +28 more
wiley   +1 more source

Phage‐derived proteins: Advancing food safety through biocontrol and detection of foodborne pathogens

Comprehensive Reviews in Food Science and Food Safety, Volume 24, Issue 2, March 2025.
Abstract The emergence of antimicrobial‐resistant foodborne pathogens poses a continuous health risk and economic burden as they can easily spread through contaminated food. Therefore, the demand for new antimicrobial agents to address this problem is steadily increasing.
Dahee Choi, Sangryeol Ryu, Minsuk Kong
wiley   +1 more source

The Importance of Endospore-Forming Bacteria Originating from Soil for Contamination of Industrial Food Processing

Applied and Environmental Soil Science, 2011
Specific endospore formers have become important contaminants in industrial food processing. The direct or indirect soil route of contamination or dispersal is the start of events or processes in the agrofood chain that eventually leads to important ...
Marc Heyndrickx
doaj   +1 more source

Brewing microbiology – bacteria of the genus Clostridium

Kvasný průmysl, 2018
In most cases, the Clostridium species rank among the sporogenic obligate anaerobes, which are sensitive to bitter hop substances and acidic pH. Thus they rank among the less dangerous contaminants in brewing operations.
Martina Brožová, Petra Kubizniakova, Dagmar Matoulková   +2 more
doaj   +1 more source

Quantitative PCR Detection of Clostridia and Evaluation of Feed Hygiene Across Different Manure Application Techniques

International Journal of Agronomy, Volume 2025, Issue 1, 2025.
The quantification of Clostridia in animal feed (grass and silage) and in samples relevant for animal feed production (soil and manure) using culture methods is generally challenging, as no single culture medium is exclusively selective for all Clostridium species while inhibiting other microorganisms present in these samples.
Samart Dorn-In, Hanna Geißler, Katrin Harms, Claudia Guldimann, Hubert Spiekers, Michael Diepolder, Karin Schwaiger, Mohamed Addi   +7 more
wiley   +1 more source

Update of the list of qualified presumption of safety (QPS) recommended microbiological agents intentionally added to food or feed as notified to EFSA 21: Suitability of taxonomic units notified to EFSA until September 2024

EFSA Journal, Volume 23, Issue 1, January 2025.
Abstract The qualified presumption of safety (QPS) process was developed to provide a safety assessment approach for microorganisms intended for use in food or feed chains. In the period covered by this Statement, no new information was found that would change the status of previously recommended QPS taxonomic units (TUs).
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, Angela Botteon, Baptista Carolina, Barizzone Fulvio, Sandra Correia, Lieve Herman   +28 more
wiley   +1 more source