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Fusel oil reaction in pressurized water: characterization and antimicrobial activity

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Abstract

This work aimed to investigate the reaction of fusel oil (FO) with pressurized water in a continuous flow reactor, in order to verify the effect of operating conditions (temperature and alcohol to water ratio) on the formation of reaction products, as well as to potentiate the antimicrobial activity of FO. The characterization of the FO was performed by high resolution mass spectrometry (ESI-TOF) and by a chromatograph coupled to mass spectrometry (GC–MS), and the reaction products were characterized by ESI-TOF and evaluated for antifungal potential. From the results, it was verified that the FO contained 70.58 wt% of isoamyl alcohol and was formed mainly by the organic functions alcohols, aldehydes, ketones and lipids. The reaction mechanisms that prevailed during the reactions conducted in subcritical and supercritical states were dehydration and reduction, respectively, making it possible to identify pyrazine derivatives compounds in the reaction products. The fungus Irpex lacteus showed greater resistance under the application of reaction products, and the products obtained at 300 °C and 400 °C showed an inhibition percentage of 96.07% to Schizophyllum commune and 96.50% to Trametes versicolor, respectively.

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All data generated or analysed during this study are included in this published article.

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Acknowledgements

The authors would like to thank the Coordination for the Improvement of Higher Education Personnel (CAPES Foundation, process number 88887.357177/2019-00), for the financial support.

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TBM conceptualized, investigated, executed the methodology, wrote the work; LCF supervised the work and CS wrote, proofread and edited the work. All authors have read and approved the final manuscript.

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Correspondence to Camila da Silva.

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The authors declare that they have no confict of interest.

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The datasets generated during and/or analysed during the current study did not involve human participants and/or animals.

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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Massa, T.B., Cardozo-Filho, L. & da Silva, C. Fusel oil reaction in pressurized water: characterization and antimicrobial activity. 3 Biotech 13, 20 (2023). https://doi.org/10.1007/s13205-022-03429-3

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  • DOI: https://doi.org/10.1007/s13205-022-03429-3

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