Anti-biofilm activity of N-Mannich bases of berberine linking piperazine against Listeria monocytogenes

Publication date: March 2021Source: Food Control, Volume 121Author(s): Joo-Won Kim, Bhupendra Mistry, Han-Seung Shin, Seok-Seong Kang
Source: Food Control - Category: Food Science Source Type: research

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Publication date: Available online 9 October 2020Source: Food ControlAuthor(s): John Jorgensen, Rebecca Bland, Joy Waite-Cusic, Jovana Kovacevic
Source: Food Control - Category: Food Science Source Type: research
In this study, a series of unsymmetrical N,N-disubstituted benzimidazolium salts were synthesized as N-heterocyclic carbene (NHC) (2a-2j) and their AgI complexes. Their structures were characterized by elemental analyses, 1H and 13C nuclear magnetic resonance (NMR) and infrared (IR) spectroscopy techniques. Further, both the salts and their silver(I)-NHC complexes have been evaluated for their potential antibacterial properties against a panel of bacterial strains namely, Micrococcus luteus, Listeria monocytogenes, Salmonella Typhimurium, Staphylococcus aureus and Pseudomonas aeruginosa. The results show that silver comple...
Source: Journal of the Brazilian Chemical Society - Category: Chemistry Source Type: research
We report a continuous cycling peritoneal dialysis (CCPD) patient who presented initially disseminated listeriosis with peritonitis. He was successfully treated with intraperitoneal and intravenous ampicillin but died unfortunately from a cardiorespiratory arrest due to food inhalation. It is the 20th case of such peritonitis mentioned among PD patients and the first reported in Belgium. This case illustrates the importance of a systematic approach to get quick diagnosis and effective antibiotic readjustment. Empiric therapy is not effective on Listeria which is naturally resistant to cephalosporins and poorly sensitive to...
Source: Peritoneal Dialysis International - Category: Urology & Nephrology Tags: Perit Dial Int Source Type: research
Publication date: March 2021Source: Food Control, Volume 121Author(s): Yeon Jin Kim, Hwan Hee Yu, Ye Ji Song, Yeong Jin Park, Na-Kyoung Lee, Hyun-Dong Paik
Source: Food Control - Category: Food Science Source Type: research
Nisin is a commonly used bacteriocin for controlling spoilage and pathogenic bacteria in food products. Strains possessing high natural nisin resistance that reduce or increase the potency of this bacteriocin against Listeria monocytogenes have been described. Our study sought to gather more insights into nisin resistance mechanisms in natural L. monocytogenes populations by examining a collection of 356 field strains that were isolated from different foods, food production environments, animals and human infections. A growth curve analysis-based approach was used to access nisin inhibition levels and assign the L. monocyt...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
This article is protected by copyright. All rights reserved. PMID: 33022122 [PubMed - as supplied by publisher]
Source: Anatomical Record - Category: Anatomy Authors: Tags: Anat Rec (Hoboken) Source Type: research
Buyer beware: The U.S. Food and Drug Administration (FDA) this week announced an expansion of County Fresh’s voluntary recall of pre-cut...
Source: Reuters: Health - Category: Consumer Health News Source Type: news
aud-Rita N, Bracq-Dieye H, Lecuit M Abstract In the context of a study on the occurrence of Listeria species in an animal farm environment in Valencia, Spain, six Listeria-like isolates could not be assigned to any known species. Phylogenetic analysis based on the 16S rRNA gene and on 231 Listeria core genes grouped these isolates in a monophyletic clade within the genus Listeria, with highest similarity to Listeria thailandensis. Whole-genome sequence analyses based on in silico DNA-DNA hybridization, the average nucleotide blast and the pairwise amino acid identities against all currently known Listeria species ...
Source: International Journal of Systematic and Evolutionary Microbiology - Category: Microbiology Authors: Tags: Int J Syst Evol Microbiol Source Type: research
In this study, a simple and efficient strategy for the construction of hydrangea-like mesoporous WO3 nanoflowers templated using diblock copolymer PS119-PtBA129 was developed. The nanoflower shows good gas sensing properties, especially for 3-hydroxy-2-butanone (3H-2B), which is the signature metabolite of Listeria monocytogenes (L. monocytogenes). Therefore, the gas sensing of 3H-2B by hydrangea-like mesoporous WO3 nanoflowers can be used to detect L. monocytogenes. In the case of 25 ppm 3H-2B as target gas, the response (Ra/Rg) of the hydrangea-like mesoporous WO3 nanoflowers at 205 °C is 152, where Ra and ...
Source: Analytical and Bioanalytical Chemistry - Category: Chemistry Authors: Tags: Anal Bioanal Chem Source Type: research
Conclusion: It is necessary for conducting susceptibility testing and to select the suitable antibiotics and avoid the effects of these bacteria in pregnant women. PMID: 32994901 [PubMed]
Source: Iranian Journal of Microbiology - Category: Microbiology Tags: Iran J Microbiol Source Type: research
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