TFA-defluorinating microbial consortium achieved with analogue enrichment
Trifluoroacetate (TFA) is an ultra-short chain perfluoroalkyl substance (PFAS) and a pollutant of global significance; it is persistent and ubiquitous in the environment across compartments, including food, drinking water, animals, and humans. Concentrations in the environment are rising, concerns over the toxicity of the compound are increasing, and there are currently no efficient ways to…
Trifluoroacetate (TFA) is a pervasive pollutant in the environment, causing concern due to its persistence and potential toxicity. Unlike conventional remediation methods, there exists a promising solution in the form of microorganisms capable of degrading TFA through dehalogenation enzymes. These enzymes, previously shown to effectively target difluoroacetate (DFA), were hypothesized to also work against TFA.
To test this hypothesis, a study analyzed cultures from an environmental sample of PFAS contaminated wastewater sludge. These cultures were incubated in M9 minimal media, with varying concentrations of acetate, TFA, DFA, or MFA, and tested over a period of 30 days. A key indicator of the cultures' effectiveness was the measurement of free fluoride (F-) at five different time points using a fluoride ion specific electrode (ISE).
Results showed that one specific culture, designated MFA1C, demonstrated significant degradation of TFA, DFA, and MFA, as confirmed by a two-way ANOVA mixed model with a p-value indicating statistical significance.
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