Keep Listeria Out of Your Kitchen
Keep Listeria at bay by keeping your refrigerator temperature low and carefully cleaning kitchen surfaces.
CONCLUSION: bLf can affect the biofilm production in Listeria isolates from slaughterhouses surfaces and shown synergic effect with ampicillin. Also has a synergic effect with oxytetracycline and streptomycin against E. coli isolates from bovine carcasses. PMID: 32242775 [PubMed - as supplied by publisher]
Publication date: Available online 31 March 2020Source: LWTAuthor(s): Varalakshmi S, Sarah Leysen
Publication date: Available online 31 March 2020Source: Food ControlAuthor(s): Xue Zhao, Lin Chen, Lin Zhao, Yun He, Hongshun Yang
ConclusionsThus, hMCs exhibit a highly individualized pattern of immune response possibly to meet tissue requirements and regulate bacteria coexistence vs defense.
Abstract Microbial biomass, as an environmentally friendly resource, has drawn a lot of attention as green biomaterials for production of unique and functionalized carbon dots (CDs). However, the hydrophilicity and high porosity drive bacterial nanocellulose as a suitable matrix for CDs with antimicrobial, photoluminescent and ultraviolet blocking features. For the first time, antimicrobial CDs were synthesized by hydrothermal method from cell-free supernatant of Lactobacillus acidophilus and characterized. Antimicrobial performance of CDs was examined on Escherichia coli (Gram-negative) and Listeria monocytogenes...
Publication date: Available online 27 March 2020Source: Trends in Food Science &TechnologyAuthor(s): Nádia F.D. Silva, M.M.P.S. Neves, Júlia M.C. S. Magalhães, Cristina Freire, Cristina Delerue-Matos
Publication date: Available online 26 March 2020Source: Food ControlAuthor(s): Marie Limoges, Gina Frontino, Catherine Donnelly
Mark Gray In diagnostic microbiology, culture media are widely used for detection of pathogenic bacteria. Such media employ various ingredients to optimize detection of specific pathogens such as chromogenic enzyme substrates and selective inhibitors to reduce the presence of commensal bacteria. Despite this, it is rarely possible to inhibit the growth of all commensal bacteria, and thus pathogens can be overgrown and remain undetected. One approach to attempt to remedy this is the use of “suicide substrates” that can target specific bacterial enzymes and selectively inhibit unwanted bacterial spe...
An early exposure to lipid biochemistry in the laboratory of Konrad Bloch resulted in a fascination with the biosynthesis, structures, and functions of bacterial lipids. The discovery of plasmalogens (1-alk-1′-enyl, 2-acyl phospholipids) in anaerobic Gram-positive bacteria led to studies on the physical chemistry of these lipids and the cellular regulation of membrane lipid polymorphism in bacteria. Later studies in several laboratories showed that the formation of the alk-1-enyl ether bond involves an aerobic process in animal cells and thus is fundamentally different from that in anaerobic organisms. Our work provi...
Publication date: 24 March 2020Source: Cell Reports, Volume 30, Issue 12Author(s): Dmitriy Ignatov, Karolis Vaitkevicius, Sylvain Durand, Laty Cahoon, Stefanie S. Sandberg, Xijia Liu, Birgitte H. Kallipolitis, Patrik Rydén, Nancy Freitag, Ciarán Condon, Jörgen Johansson