scholarly journals Pathogenic potential of the surviving Salmonella enteritidis on strawberries after disinfection treatments based on ultraviolet-C light and peracetic acid

2022 ◽  
pp. 109536
Author(s):  
J. Ortiz-Solà ◽  
P. Colás-Medà ◽  
I. Nicolau-Lapeña ◽  
I. Alegre ◽  
M. Abadias ◽  
...  
Keyword(s):  
Peracetic Acid ◽  
Salmonella Enteritidis ◽  
Pathogenic Potential ◽  
Ultraviolet C

scholarly journals Salmonella Enteritidis forms biofilm under low temperatures on different food industry surfaces

2019 ◽  
Vol 49 (7) ◽  
Author(s):  
Bruna Webber ◽  
Amauri Picollo de Oliveira ◽  
Emanuele Serro Pottker ◽  
Luciane Daroit ◽  
Rafael Levandowski ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Peracetic Acid ◽  
Low Temperatures ◽  
Biofilm Formation ◽  
Food Industry ◽  
Salmonella Enteritidis ◽  
Food Preservation ◽  
Hot Water ◽  
Influence Of Temperature On ◽  
Steel Surfaces

ABSTRACT: We evaluated the influence of temperature on the ability of Salmonella Enteritidis (SE) to form biofilms on stainless steel, polyethylene, and polyurethane surfaces under different hygiene procedures. These materials were placed on SE culture and incubated at 42±1 ºC, 36±1 ºC, 25±1 ºC, 9±1 ºC, and 3±1 ºC for 4, 8, 12, and 24 h. Hot water at 45 ºC and 85 ºC, 0.5% peracetic acid solution, and 1% quaternary ammonia were used for hygienization. Biofilm formation occurred at all temperatures evaluated, highlighting at 3 ºC which has not been reported as an ideal temperature for the adhesion of SE to these materials. The SE adhered more often to polyethylene surfaces than to polyurethane and stainless steel surfaces (P<0.05). Peracetic acid and water at 85 ºC had similar hygienization efficiency (P<0.05) followed by quaternary ammonia whereas water at 45 ºC was not effective. SE adhered to these materials under low temperatures which to date have been deemed safe for food preservation.

Activation of isolated heterophils from chicks stimulated in vivo with salmonella enteritidis-immune lymphokines

1996 ◽  
Vol 54 ◽  
pp. 760-761
Author(s):  
R. B. Moyes ◽  
R. E. Droleskey ◽  
M. H. Kogut ◽  
J. R. DeLoach
Keyword(s):  
Lamina Propria ◽  
Intestinal Mucosa ◽  
Salmonella Enteritidis ◽  
Intestinal Tract ◽  
Polymorphonuclear Cells ◽  
Subclinical Infection ◽  
Egg Products ◽  
Immune Lymphokines ◽  
Organ Invasion

Salmonella enteritidis (SE) is of great concern to the poultry industry due to the organism's ability to penetrate the intestinal mucosa of the laying hen and subsequently colonize the ovaries and yolk membrane. The resultant subclinical infection can lead to SE infection of raw eggs and egg products. Interference with the ability of the organism to invade has been linked to the activation and recruitment of inflammatory polymorphonuclear cells, heterophils, to the lamina propria of the intestinal tract.Recently it has been established that heterophil activation and increased resistance to SE organ invasion can be accomplished by the administration of SE-immune lymphokines (SE-ILK) obtained from supernatants of concanavalin-A stimulated SE immune T lymphocytes from SE hyperimmunized hens. Invasion of SE into the lamina propria provides a secondary signal for directing activated heterophils to the site of SE invasion.

Sweet's syndrome associated with Salmonella enteritidis infection

1999 ◽  
Vol 24 (3) ◽  
pp. 239-240 ◽  
Author(s):  
Flórez ◽  
Sánchez-Aguilar ◽  
Rosón ◽  
Prieto ◽  
Van den Eyden ◽  
...  
Keyword(s):  
Salmonella Enteritidis ◽  
Sweet’S Syndrome ◽  
Sweet's Syndrome

Questions on the role of biofilms for the adaptation of microorganisms to unfavorable environmental factors by the example of P. aeruginosa

2020 ◽  
Vol 99 (4) ◽  
pp. 379-383
Author(s):  
Vasily N. Afonyushkin ◽  
N. A. Donchenko ◽  
Ju. N. Kozlova ◽  
N. A. Davidova ◽  
V. Yu. Koptev ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Environmental Factors ◽  
Barrier Function ◽  
Infectious Agent ◽  
Antagonistic Activity ◽  
The Body ◽  
Main Function ◽  
Pathogenic Potential ◽  
The Face

Pseudomonas aeruginosa is a widely represented species of bacteria possessing of a pathogenic potential. This infectious agent is causing wound infections, fibrotic cystitis, fibrosing pneumonia, bacterial sepsis, etc. The microorganism is highly resistant to antiseptics, disinfectants, immune system responses of the body. The responses of a quorum sense of this kind of bacteria ensure the inclusion of many pathogenicity factors. The analysis of the scientific literature made it possible to formulate four questions concerning the role of biofilms for the adaptation of P. aeruginosa to adverse environmental factors: Is another person appears to be predominantly of a source an etiological agent or the source of P. aeruginosa infection in the environment? Does the formation of biofilms influence on the antibiotic resistance? How the antagonistic activity of microorganisms is realized in biofilm form? What is the main function of biofilms in the functioning of bacteria? A hypothesis has been put forward the effect of biofilms on the increase of antibiotic resistance of bacteria and, in particular, P. aeruginosa to be secondary in charcter. It is more likely a biofilmboth to fulfill the function of storing nutrients and provide topical competition in the face of food scarcity. In connection with the incompatibility of the molecular radii of most antibiotics and pores in biofilm, biofilm is doubtful to be capable of performing a barrier function for protecting against antibiotics. However, with respect to antibodies and immunocompetent cells, the barrier function is beyond doubt. The biofilm is more likely to fulfill the function of storing nutrients and providing topical competition in conditions of scarcity of food resources.

Обеззараживание семян капусты от сосудистого бактериоза

2018 ◽  
Author(s):  
A.T. Orynbayev ◽  
F.S. Dzhalilov
Keyword(s):  
Peracetic Acid ◽  
Biological Efficiency ◽  
Black Rot ◽  
Presowing Treatment

Приведены данные двухлетнего исследования по поиску эффективных препаратов для обеззараживания семян капусты от сосудистого бактериоза. Наилучший результат был получен при предпосевной обработке 0,15%-ной надуксусной кислотой. При этом биологическая эффективность составляла 94,1–97,6%, что значительно превышало соответствующий показатель в эталонном варианте – Фитолавин, ВРК, 0,2% (69,0–72,0%). Показано, что заблаговременная обработка семян НУК (за 550 суток до посева) не оказывала достоверного влияния на их лабораторную всхожесть.Presented data are the result of a two-year study aimed at identifying effective preparations for the disinfection of cabbage seeds from black rot. The best result was obtained by presowing treatment with 0.15% peracetic acid. In this case, the biological efficiency was 94.1–97.6%, which significantly exceeded the corresponding indicator in the reference variant – Phytolavin, VRK, 0.2% (69.0–72.0%). The study has not revealed any significant effect of advance treatment of seeds with peracetic acid (550 days before sowing) on their laboratory germination.

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