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Updated: May 5, 2026

Quantification of the Potential Impact of Glyphosate-Based Products on Microbiomes
Published on: January 10, 2022
Neutralization of the antimicrobial effect of glyphosate by humic acid in vitro
Awad A Shehata1, Manfred Kühnert2, Svent Haufe2
1Institute of Bacteriology and Mycology, Faculty of Veterinary Medicine, Leipzig University, An den Tierkliniken 29, 04103 Leipzig, Germany; Albrecht Daniel Thaer-Institute of Agronomy at the University Leipzig, Gustav-Kuhn Straße 8, 04159 Leipzig, Germany; Avian and Rabbit Diseases Department, Faculty of Veterinary Medicine, Sadat City University, Egypt.
Abstract:
In the present study, the neutralization ability of the antimicrobial effect of glyphosate by different humic acids was investigated. The minimal inhibitory concentrations of glyphosate for different bacteria such as Bacillus badius, Bifidobacterium adolescentis, Escherichia coli, E. coli 1917 strain Nissle, Enterococcus faecalis, Enterococcus faecium, Salmonella enteritidis and Salmonella typhimurium were determined in the presence or absence of different concentrations of humic acid (0.25, 0.5 and 1.0 mg mL(-1)). Our findings indicated that humic acids inhibited the antimicrobial effect of glyphosate on different bacteria. This information can help overcome the negative impact of glyphosate residues in feed and water.
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