| Autor: |
Al-Mohammadi AR; Department of Sciences, King Khalid Military Academy, Riyadh 11459, Saudi Arabia., Ismaiel AA; Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig 44519, Egypt., Ibrahim RA; Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig 44519, Egypt., Moustafa AH; Department of Chemistry, Faculty of Science, Zagazig University, Zagazig 44519, Egypt., Abou Zeid A; Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig 44519, Egypt., Enan G; Department of Botany and Microbiology, Faculty of Science, Zagazig University, Zagazig 44519, Egypt. |
| Jazyk: |
angličtina |
| Zdroj: |
Molecules (Basel, Switzerland) [Molecules] 2021 Aug 19; Vol. 26 (16). Date of Electronic Publication: 2021 Aug 19. |
| DOI: |
10.3390/molecules26165026 |
| Abstrakt: |
Kombucha is a traditional beverage of sweetened black tea fermented with a symbiotic association of acetic acid bacteria and yeasts. In this study, kombucha fermented beverage (KFB) appeared to include nine chemical groups (alcohols, acids, lactones, condensed heterocyclic compounds, antibiotics, esters, aldehydes, fatty acids, and alkaloids) of many bioactive metabolites, as elucidated by gas chromatography-mass spectrometry (GC-MS) and IR spectra. The fermented metabolic components of KFB seem collectively to act in a synergistic action giving rise to the antimicrobial activity. Four types of kombucha preparations (fermented, neutralized, heat-treated and unfermented) were demonstrated with respect to their antimicrobial activity against some pathogenic bacterial and fungal strains using agar well diffusion assay. KFB exerted the strongest antimicrobial activities when compared with neutralized and heat-treated kombucha beverages (NKB and HKB). Staphylococcus aureus ATCC6538 ( S. aureus ) and Escherichia coli ATCC11229 ( E. coli ) were the organisms most susceptible to the antimicrobial activity of kombucha beverage preparations. Finally, the KFB preparation showed remarkable inhibitory activity against S. aureus and E. coli bacteria in a brain heart infusion broth and in some Egyptian fruit juices (apple, guava, strawberry, and tomato). These data reveal that kombucha is not only a prophylactic agent, but also appears to be promising as a safe alternative biopreservative, offering protection against pathogenic bacteria and fungi. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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