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Effects of phytogenic substances on growth and biofilm formation of Escherichia coli and Salmonella field isolates

Sonja Axmann

Sonja Axmann

AGES GmbH, Austrian Agency for Health and Food Safety, Institute of Animal Nutrition and FeedLinz, Austria
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Axmann, Sonja
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Anika Schorpp

Anika Schorpp

FFoQSI GmbH, Austrian Competence Centre for Feed and Food Quality, Safety and InnovationTulln, Austria
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Schorpp, Anika
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Julia Strassgüttl

Julia Strassgüttl

FFoQSI GmbH, Austrian Competence Centre for Feed and Food Quality, Safety and InnovationTulln, Austria
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Strassgüttl, Julia
 and 
Tobias Aumiller

Tobias Aumiller

Delacon Biotechnik GmbHEngerwitzdorf, Austria
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Aumiller, Tobias
  
Sep 18, 2021
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Article Category: Research Article
Published Online: Sep 18, 2021
Page range: 1 - 8
Received: Dec 09, 2020
Accepted: Mar 19, 2021
DOI: https://doi.org/10.2478/boku-2021-0001
Keywords
© 2021 Sonja Axmann et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1

CV biofilm and viable counts (CFU ml−1) of E. coli and Salmonella exposed to the phytogenics garlic oil, cinnamaldehyde, carvacrol, thymol, and thyme oil. The different letters above the bars (CV absorption) indicate significant differences (P ≤ 0.05) within a chart. The viable counts of the PCs as well as those at the first sub-MIC and at 5 ppm were quantified and plotted as dots.Figure 1. CV-Biofilm und Zellzahlen (KBE ml−1) von E. coli und Salmonella behandelt mit den phytogenen Substanzen Knoblauchöl, Zimtaldehyd, Carvacrol, Thymol und Thymianöl. Die unterschiedlichen Buchstaben über den Balken (CV-Absorption) zeigen signifikante Unterschiede (P ≤ 0,05) innerhalb eines Diagramms. Die Zellzahlen der Wachstumskontrollen (PC), der ersten sub-MICs und jene bei 5 ppm wurden quantifiziert und als Punkte dargestellt.
CV biofilm and viable counts (CFU ml−1) of E. coli and Salmonella exposed to the phytogenics garlic oil, cinnamaldehyde, carvacrol, thymol, and thyme oil. The different letters above the bars (CV absorption) indicate significant differences (P ≤ 0.05) within a chart. The viable counts of the PCs as well as those at the first sub-MIC and at 5 ppm were quantified and plotted as dots.Figure 1. CV-Biofilm und Zellzahlen (KBE ml−1) von E. coli und Salmonella behandelt mit den phytogenen Substanzen Knoblauchöl, Zimtaldehyd, Carvacrol, Thymol und Thymianöl. Die unterschiedlichen Buchstaben über den Balken (CV-Absorption) zeigen signifikante Unterschiede (P ≤ 0,05) innerhalb eines Diagramms. Die Zellzahlen der Wachstumskontrollen (PC), der ersten sub-MICs und jene bei 5 ppm wurden quantifiziert und als Punkte dargestellt.

Major chemical constituents of the studied phytogenicsTabelle 1_ Chemische Hauptbestandteile der untersuchten phytogenen Substanzen

Phytogenic Compositiona
Garlic oil Diallyl disulfid (59.1%), diallyl trisulfid (11.7%), and methyl propyl trisulfid (1.1%)
Thymol Thymol (100%)
Carvacrol Carvacrol (100%)
Thyme oil p-Cymene (26.9%), γ-terpinene (7.7%), linalool (5%), 4-terpineol (0.7%), thymol (41.1%), and carvacrol (3%)
Cinnamaldehyde trans-Cinnamaldehyde (99.4%)
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