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Antoniadou M, Rozos G, Vaiou N, Zaralis K, Ersanli C, Alexopoulos A, Tzora A, Varzakas T, Voidarou C(C. The In Vitro Assessment of Antibacterial and Antioxidant Efficacy in Rosa damascena and Hypericum perforatum Extracts against Pathogenic Strains in the Interplay of Dental Caries, Oral Health, and Food Microbiota. Microorganisms 2023; 12:60. [PMID: 38257885 PMCID: PMC10819596 DOI: 10.3390/microorganisms12010060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 12/18/2023] [Accepted: 12/26/2023] [Indexed: 01/24/2024] Open
Abstract
The rising demand for novel antibiotic agents prompts an investigation into natural resources, notably plant-derived compounds. In this study, various extracts (aqueous, ethanolic, aqueous-ethanolic, and enzymatic) of Rosa damascena and Hypericum perforatum were systematically evaluated against bacterial strains isolated from dental lesions (n = 6) and food sources (raw milk and broiler carcass, n = 2). Minimal inhibitory concentration (MIC), minimal bactericidal concentration (MBC), antibiofilm activity, and time-kill kinetics were assessed across a range of extract concentrations, revealing a dose-responsive effect. Notably, some extracts exhibited superior antibacterial efficacy compared to standard clinical antibiotics, and the time-kill kinetics demonstrated a rapid elimination of bacterial loads within 24 h. The susceptibility pattern proved strain-specific, contingent upon the extract type, yet all tested pathogens exhibited sensitivity. The identified extracts, rich in phenolic and polyphenolic compounds, as well as other antioxidant properties, contributed to their remarkable antibiotic effects. This comprehensive investigation not only highlights the potential of Rosa damascena and Hypericum perforatum extracts as potent antibacterial agents against diverse bacterial strains including caries pathogens, but also underscores their rapid action and dose-dependent efficacy. The findings suggest a promising avenue for harnessing plant-derived compounds in the development of novel antimicrobial strategies against dental caries and other oral inflammations, bridging the gap between natural resources and antibiotic discovery.
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Affiliation(s)
- Maria Antoniadou
- Department of Dentistry, School of Health Sciences, National and Kapodistrian University of Athens, 15784 Athens, Greece;
- CSAP, Executive Mastering Program in Systemic Management, University of Piraeus, 18534 Piraeus, Greece
| | - Georgios Rozos
- Department of Agriculture, School of Agricultural Sciences, University of Western Macedonia, 53100 Florina, Greece; (G.R.); (K.Z.)
- Department of Agriculture, School of Agriculture, University of Ioannina, 47100 Arta, Greece; (C.E.); (A.T.)
| | - Natalia Vaiou
- Laboratory of Microbiology, Department of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece;
| | - Konstantinos Zaralis
- Department of Agriculture, School of Agricultural Sciences, University of Western Macedonia, 53100 Florina, Greece; (G.R.); (K.Z.)
| | - Caglar Ersanli
- Department of Agriculture, School of Agriculture, University of Ioannina, 47100 Arta, Greece; (C.E.); (A.T.)
| | - Athanasios Alexopoulos
- Laboratory of Microbiology, Biotechnology & Hygiene, Department of Agricultural Development, Democritus University of Thrace, 68200 Orestiada, Greece;
| | - Athina Tzora
- Department of Agriculture, School of Agriculture, University of Ioannina, 47100 Arta, Greece; (C.E.); (A.T.)
| | - Theodoros Varzakas
- Department Food Science and Technology, University of the Peloponnese, 24100 Kalamata, Greece
| | - Chrysoula (Chrysa) Voidarou
- Department of Agriculture, School of Agriculture, University of Ioannina, 47100 Arta, Greece; (C.E.); (A.T.)
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Trendafilova A, Staleva P, Petkova Z, Ivanova V, Evstatieva Y, Nikolova D, Rasheva I, Atanasov N, Topouzova-Hristova T, Veleva R, Moskova-Doumanova V, Dimitrov V, Simova S. Phytochemical Profile, Antioxidant Potential, Antimicrobial Activity, and Cytotoxicity of Dry Extract from Rosa damascena Mill. Molecules 2023; 28:7666. [PMID: 38005389 PMCID: PMC10674922 DOI: 10.3390/molecules28227666] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/09/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023] Open
Abstract
Dry rose extract (DRE) obtained industrially by aqueous ethanol extraction from R. damascena flowers and its phenolic-enriched fraction, obtained by re-extraction with ethyl acetate (EAE) were the subject of this study. 1H NMR of DRE allowed the identification and quantitation of fructose and glucose, while the combined use of HPLC-DAD-ESIMS and HPLC-HRMS showed the presence of 14 kaempferol glycosides, 12 quercetin glycosides, 4 phenolic acids and their esters, 4 galloyl glycosides, 7 ellagitannins, and quinic acid. In addition, the structures of 13 of the flavonoid glycosides were further confirmed by NMR. EAE was found to be richer in TPC and TFC and showed better antioxidant activity (DPPH, ABTS, and FRAP) compared to DRE. Both extracts displayed significant activity against Propionibacterium acnes, Staphylococcus aureus, and S. epidermidis, but showed no activity against Candida albicans. Toxicity tests on normal human skin fibroblasts revealed low toxicity for both extracts with stronger effects observed at 24 hours of treatment that were compensated for over the following two days. Human hepatocarcinoma (HepG2) cells exhibited an opposite response after treatment with a concentration above 350 µg/mL for EAE and 500 µg/mL for DRE, showing increased toxicity after the third day of treatment. Lower concentrations were non-toxic and did not significantly affect the cell cycle parameters of either of the cell lines.
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Affiliation(s)
- Antoaneta Trendafilova
- Laboratory Chemistry of Natural Products, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Plamena Staleva
- Laboratory Organic Chemistry and Spectroscopy, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (P.S.); (Z.P.); (V.D.)
- Research and Development and Innovation Consortium, Sofia Tech Park, 1784 Sofia, Bulgaria
| | - Zhanina Petkova
- Laboratory Organic Chemistry and Spectroscopy, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (P.S.); (Z.P.); (V.D.)
| | - Viktoria Ivanova
- Laboratory Chemistry of Natural Products, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Yana Evstatieva
- Faculty of Biology, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (Y.E.); (D.N.); (I.R.); (N.A.); (T.T.-H.); (R.V.); (V.M.-D.)
| | - Dilyana Nikolova
- Faculty of Biology, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (Y.E.); (D.N.); (I.R.); (N.A.); (T.T.-H.); (R.V.); (V.M.-D.)
| | - Iliyana Rasheva
- Faculty of Biology, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (Y.E.); (D.N.); (I.R.); (N.A.); (T.T.-H.); (R.V.); (V.M.-D.)
| | - Nikola Atanasov
- Faculty of Biology, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (Y.E.); (D.N.); (I.R.); (N.A.); (T.T.-H.); (R.V.); (V.M.-D.)
| | - Tanya Topouzova-Hristova
- Faculty of Biology, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (Y.E.); (D.N.); (I.R.); (N.A.); (T.T.-H.); (R.V.); (V.M.-D.)
| | - Ralitsa Veleva
- Faculty of Biology, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (Y.E.); (D.N.); (I.R.); (N.A.); (T.T.-H.); (R.V.); (V.M.-D.)
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Veselina Moskova-Doumanova
- Faculty of Biology, Sofia University “St. Kliment Ohridski”, 1164 Sofia, Bulgaria; (Y.E.); (D.N.); (I.R.); (N.A.); (T.T.-H.); (R.V.); (V.M.-D.)
| | - Vladimir Dimitrov
- Laboratory Organic Chemistry and Spectroscopy, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (P.S.); (Z.P.); (V.D.)
| | - Svetlana Simova
- Bulgarian NMR Centre, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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Danova S, Yankov D, Dobreva L, Dobreva A, Armenova N, Apostolov A, Mileva M. Postbiotics Production of Candidate-Probiotic Lactiplantibacillus plantarum AC131 with Renewable Bio Resources. Life (Basel) 2023; 13:2006. [PMID: 37895388 PMCID: PMC10608073 DOI: 10.3390/life13102006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/23/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023] Open
Abstract
Lactiplantibacillus plantarum is a versatile specie, well known as a producer of lactic acid (LA) and other metabolites with biotechnological significance. The present work characterizes growth and lactic acid production of the candidate-probiotic strain L. plantarum AC131, from Bulgarian white brined cheeses. Different nutritional media with ingredients from renewable resources-reduced sugars from dried distillers' grains with soluble (DDGS) and waste waters from the water-vapor distillation of Bulgarian Rosa alba L. and Rosa damascena Mill. essential oil-were assessed. The results obtained showed significant LA production (up to 95% conversion) in modified MRS broth with reducing sugars from DDGS hydrolysates. The addition of R. alba L. and R. damascena Mill. distillation effluents stimulated the growth and biological activity of postbiotics produced by L. plantarum AC131. In both experimental approaches, a statistically significant inhibition (from 20 to 60%) of E. coli HB 101 growth was found during 24 h exposure and a variable effect on the biofilm formed. In conclusion, reducing sugars from DDGS hydrolysates can be successfully used as a carbon source for lactic acid production. In the case of fermentation without pH control, the process is product inhibited, while with pH control, nearly full conversion was achieved. Postbiotics produced during the process of fermentation showed a variety of biological activity and inhibitory effects on the growth of Escherichia coli HB 101.
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Affiliation(s)
- Svetla Danova
- Institute of Microbiology “Stephan Angeloff” Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (S.D.); (L.D.)
| | - Dragomir Yankov
- Institute of Chemical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (D.Y.); (N.A.); (A.A.)
| | - Lili Dobreva
- Institute of Microbiology “Stephan Angeloff” Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (S.D.); (L.D.)
| | - Ana Dobreva
- Institute for Roses and Aromatic Plants, Agriculture Academy, 6100 Kazanlak, Bulgaria;
| | - Nadya Armenova
- Institute of Chemical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (D.Y.); (N.A.); (A.A.)
| | - Apostol Apostolov
- Institute of Chemical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (D.Y.); (N.A.); (A.A.)
| | - Milka Mileva
- Institute of Microbiology “Stephan Angeloff” Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (S.D.); (L.D.)
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Indigenous Yeasts from Rose Oil Distillation Wastewater and Their Capacity for Biotransformation of Phenolics. Microorganisms 2023; 11:microorganisms11010201. [PMID: 36677493 PMCID: PMC9865748 DOI: 10.3390/microorganisms11010201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/05/2023] [Accepted: 01/09/2023] [Indexed: 01/13/2023] Open
Abstract
The indigenous yeasts associated with the spontaneous fermentation of phenolic-rich rose oil distillation wastewater (RODW) generated after the industrial distillation of rose oil were studied. The ITS-rDNA sequence analysis of the samples collected from RODW fermented at semi-sterile conditions, a waste deposition lagoon and endophytic yeasts isolated from industrially cultivated Rosa damascena suggests that the spontaneous RODW fermentation is caused by yeasts from the genus Cyberlindnera found also as endophytes in the rose flowers. Phylogenetic analysis based on the nucleotide sequences of the translation elongation factor (TEF1α) and 18S- and 26S- rRNA genes further confirmed the taxonomic affiliation of the RODW yeast isolates with the genus Cyberlindnera. The RODW fermentation capacity of a selected set of indigenous yeast isolates was studied and compared with those of common yeast strains. The indigenous yeast isolates demonstrated a superior growth rate, resulting in a nearly double reduction in the phenolic content in the fermented RODW. The indigenous yeasts' fermentation changed the RODW phenolics' composition. The levels of some particular phenolic glycosides decreased through the depletion and fermentation of their sugar moiety. Hence, the relative abundance of the corresponding aglycons and other phenolic compounds increased. The capacity for the biotransformation of RODW phenolics by indigenous yeasts is discussed.
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Nazlić M, Akrap K, Kremer D, Dunkić V. Hydrosols of Veronica Species -Natural Source of Free Volatile Compounds with Potential Pharmacological Interest. Pharmaceuticals (Basel) 2022; 15:1378. [PMID: 36355550 PMCID: PMC9695910 DOI: 10.3390/ph15111378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/04/2022] [Accepted: 11/06/2022] [Indexed: 09/29/2023] Open
Abstract
In this study, free volatile compounds (FVCs) were isolated from the water fractions (hydrosols) of 10 Croatian Veronica species obtained by hydrodistillation (HD) and microwave-assisted extraction (MAE). The use of different isolation techniques is important for the analysis of the influence of extraction conditions on the qualitative and quantitative composition of the isolated constituents. The composition of the hydrosols was analyzed using gas chromatography and mass spectrometry. The compounds β-ionone and benzene acetaldehyde were detected in all 10 Veronica hydrosols studied. E-caryophyllene was also identified in all isolates except the MAE isolate of V. arvensis L. Caryophyllene oxide was isolated in all isolates apart from the HD isolate of V. catenata Pennell. (E)-β-Damascenone is significantly present in all isolates except the MAE isolates of V. catanata and V. cymbalaria Bodard. In these two species, α-muurolol was identified in a high percentage. The same basic phytochemical constituents and compounds characteristic of a given Veronica species suggest the importance of further research. Antioxidant activity was tested for all extracts using two methods, ORAC and DPPH. Therefore, it is crucial to identify as many specialized metabolites from Veronica species as possible, especially hydrosols, which are natural products of potential pharmacological interest.
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Affiliation(s)
- Marija Nazlić
- Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia
| | - Karla Akrap
- Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia
| | - Dario Kremer
- Faculty of Pharmacy and Biochemistry, University of Zagreb, A. Kovačića 1, HR-10000 Zagreb, Croatia
| | - Valerija Dunkić
- Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia
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