Ruiz, C.; von Känel, G.; Burkard, S.; Küenzi, P. Fusarium spp. in Metalworking Fluid Systems: Companions Forever. Preprints2024, 2024102492. https://doi.org/10.20944/preprints202410.2492.v1
APA Style
Ruiz, C., von Känel, G., Burkard, S., & Küenzi, P. (2024). Fusarium spp. in Metalworking Fluid Systems: Companions Forever. Preprints. https://doi.org/10.20944/preprints202410.2492.v1
Chicago/Turabian Style
Ruiz, C., Stefan Burkard and Peter Küenzi. 2024 "Fusarium spp. in Metalworking Fluid Systems: Companions Forever" Preprints. https://doi.org/10.20944/preprints202410.2492.v1
Abstract
Water-miscible metalworking fluids (MWFs) are utilized in a variety of metal removal and forming operations. For end-use, formulation concentrates are diluted in water, creating conditions conducive to microbial growth and metabolism, possibly compromising the fluid’s integrity and mechanically obstructing filters or piping systems. Metalworking machines offer additional habitats on surfaces that are in permanent or temporary contact with MWFs. For that reason, biocides have been incorporated into concentrates for years, but legal constraints will restrain their use in the future. While bacterial contamination of MWFs is well documented, fungal contamination is often overseen and infrequently reported in the literature. In this study, we report fungal prevalence in in-use MWFs sampled worldwide over 10 years and we are convinced that presence of fungi is the norm rather than the exception. In addition, we evaluated the inhibitory effect of fungicides on fungal growth, sporulation and spore viability using traditional culture-dependent methods and flow cytometry. In essence, we show that the effectiveness of these fungicides is limited and dependent on the chemical construction of the fluid. We think that the ecology created by water-diluted MWFs is of higher importance than the anti-fungal activity of single components.
Keywords
Fungi; Fusarium spp.; Metalworking Fluids; Flow Cytometry; Occupational health
Subject
Biology and Life Sciences, Immunology and Microbiology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
