23-Enterococcus hirae- Beschreibung

https://www.bode-science-center.de/center/erregersuche-a-z/enterococcus-hirae.html 

https://www.atcc.org/products/10541

Das gram-positive, anaerobe Bakterium Enterococcus hirae gehört zur Familie der Enterococcaceae.

Das kugelförmige Bakterium verfügt über eine geringe Virulenz und führt sehr selten zu Infektionen wie z.B. Endokarditis.

Der Hauptübertragungsweg ist unbekannt.

Die antibiotische Behandlung von Enterococcus hirae-Infektionen wird durch eine zunehmende Resistenz erschwert.

» Erforderliches Wirkungsspektrum
Bakterizid

http://www.ifrj.upm.edu.my/23%20(06)%202016/(48).pdf

International Food Research Journal 23(6): 2653-2660 (December 2016) Journal homepage: http://www.ifrj.upm.edu.my 1,2Goñi, M.G., 1,2*Tomadoni, B., 2,3Audisio, M.C., 2,3Ibarguren, C., 1,2Roura, S.I., 1,2Moreira, M.R. and 1,2Ponce, A.G. 1 Grupo de Investigación en Ingeniería de Alimentos (GIIA). Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad Nacional de Mar del Plata, Av. Juan B. Justo 4302, Mar del Plata, Argentina 2 Concejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina 3 Instituto de Investigaciones para la Industria Química (INIQUI). Universidad Nacional de Salta, Av. Bolivia 5150, Salta, Argentina 

Application of bacteriocins from Enterococcus hirae on butterhead lettuce seeds inoculated with Escherichia coli O157:H7

Abstract Several outbreaks of Escherichia coli O157:H7 infections have been associated with contaminated seeds and sprouts. Effective procedures to control pathogenic bacteria on seeds destined for sprout production should be developed to ensure an acceptable microbiological quality. In this study, the use of bacteriocins produced by Enterococcus hirae (Eh9) was analyzed as a potential method to control the endogenous microbial populations of lettuce seeds and avoid pathogen contamination on seeds destined for sprout production. Seeds decontamination with Eh9 cell-free supernatant (CFS) achieved a significative fungiostatic effect without affecting germination. CFS treatment did not exert a biocontrol effect on E. coli endogenous; however, a significant bacteriocin biocontrol was reached on lettuce seeds inoculated with exogenous E. coli during refrigerated storage (7 days). Germination percentage and potential yield were not affected by the treatments. A better understanding of the behavior of pathogens in preharvest environments will assure the delivery of safe produce to the consumer.