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Biochemical composition, antimicrobial and antifungal activities assessment of the fermented medicinal plants extract using lactic acid bacteria

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Abstract

To prevent foodborne diseases and extend shelf life, antimicrobial agents may be used in food to inhibit the growth of undesired microorganisms. The present study was aimed to determine the antimicrobial and antifungal activities of the fermented medicinal plants extract using Lactobacillus acidophilus ATCC 4356. The fermentation kinetic parameters, biochemical composition and the volatile compounds of the fermented plant extract were assessed. The results showed that, the fermented plants extract exhibited high content in polyphenols, flavonoids, and tannins (152.7 mg AGE/L; 93.6 mg RE/L; and 62.1 mg CE/L, respectively) comparing to non-fermented the extract. The GC–MS headspace analyses showed the presence of 24 interesting volatile compounds. The richness of the fermented plants extracts in polyphenols and bioactive compound, such as Eucalyptol, Camphene, α-Phellandrene, α-Terpinene, improves their biological activity. In addition, the fermented plants extract exhibited a high antimicrobial potential against pathogenic bacteria and fungi determined by different methods. The maximum inhibition showed in the fermented plants extract against Escherichia coli 25922/3, Pseudomonas aeruginosa 27853 ATCC, Staphylococcus aureus 29213 ATCC, Enterococcus aerogenes 13048 ATCC, Phytophthora infestans P3 4/91 R + , P. infestans P4 20/01 R, P. infestans (GL-1). The obtained results support the hypothesis of using lactic fermentation as a functional ingredient to improve food preservation. The bioprocesses of fermentation technology enhance antimicrobial and antifungal activities which could be used in different industrial applications.

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Acknowledgements

We are grateful and provide sincere thanks to honorable Vice Chancellor University of Applied Sciences. Neubrandenburg, Germany for the infrastructure and facilities. This study supported by a grant from the Ministry of Tunisia, Laboratory of Aromatic and Medicinal Plants, Center of Biotechnology (LR15CBBC06) at the Ecopark of Borj-cédria. BP-901, 2050 Hammam-Lif. Tunisia.

Funding

This study supported by University of Tunis EL Manar, University of Applied Sciences, Neubrandenburg, Germany, for the infrastructure and facilities, and Laboratory of Aromatic and Medicinal Plants, Center of Biotechnology (LR15CBBC06) at the Ecopark of Borj-cédria. BP-901, 2050 Hammam-Lif. Tunisia.

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HG and AelH, M-RE, and MST designed the study and performed the experiments. HG and M-R Enriqueta performed the experiment and carried out data analyses. HG and AelH contributed to drafting the manuscript. All authors have read and approved the final version of submitted manuscript.

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Correspondence to Hamza Gadhoumi.

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The authors of this manuscript certify that they have no affiliation with or involvement in any organization or entity with any financial interest. I certify that I am submitting the manuscript on behalf of all the authors.

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This article does not contain any studies with human participants performed by any of the authors.

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All authors have seen the manuscript and approved to submit Archives of Microbiology.

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Communicated by Erko Stackebrandt.

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Gadhoumi, H., Hayouni, E.L.A., Martinez-Rojas, E. et al. Biochemical composition, antimicrobial and antifungal activities assessment of the fermented medicinal plants extract using lactic acid bacteria. Arch Microbiol 204, 374 (2022). https://doi.org/10.1007/s00203-022-02985-9

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  • DOI: https://doi.org/10.1007/s00203-022-02985-9

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