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Brezoiu AM, Deaconu M, Mitran RA, Sedky NK, Schiets F, Marote P, Voicu IS, Matei C, Ziko L, Berger D. The Antioxidant and Anti-Inflammatory Properties of Wild Bilberry Fruit Extracts Embedded in Mesoporous Silica-Type Supports: A Stability Study. Antioxidants (Basel) 2024; 13:250. [PMID: 38397847 PMCID: PMC10886266 DOI: 10.3390/antiox13020250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 02/08/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
Polyphenolic extracts from wild bilberries (Vaccinium myrtillus L.) have shown antioxidant and anti-inflammatory effects, but they are prone to degradation when exposed to environmental factors, limiting their use in biomedical applications. To overcome this issue, this study proposed the embedding of wild bilberry fruit ethanolic extracts in pristine mesoporous silica functionalized with organic groups (mercaptopropyl and propionic acid), as well as coated with fucoidan, a biopolymer. Herein, we report a stability study of free and incorporated extracts in mesoporous silica-type supports in high-humidity atmospheres at 40 °C up to 28 days, using HPLC analysis, thermal analysis, and radical scavenging activity determination. Better chemical and thermal stability over time was observed when the extracts were incorporated in mesoporous silica-type supports. After 12 months of storage, higher values of antioxidant activity were determined for the extract embedded in the supports, silica modified with mercaptopropyl groups (MCM-SH), and fucoidan-coated silica (MCM-SH-Fuc) than that of the free extract due to a synergistic activity between the support and extract. All encapsulated extracts demonstrated remarkable effects in reducing NO production in LPS-stimulated RAW 264.7 cells. The treatment with extract embedded in MCM-SH-Fuc in a dose of 10 μg/mL surpassed the effect of free extract in the same concentration. For the extract encapsulated in an MCM-SH support, a lower IC50 value (0.69 μg/mL) towards COX-2 was obtained, comparable with that of Indomethacin (0.6 μg/mL). Also, this sample showed a higher selectivity index (2.71) for COX-2 than the reference anti-inflammatory drug (0.98). The developed formulations with antioxidant and anti-inflammatory properties could be further used in nutraceuticals.
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Affiliation(s)
- Ana-Maria Brezoiu
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (A.-M.B.); (M.D.); (I.-S.V.); (C.M.)
| | - Mihaela Deaconu
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (A.-M.B.); (M.D.); (I.-S.V.); (C.M.)
| | - Raul-Augustin Mitran
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania;
| | - Nada K. Sedky
- Department of Biochemistry, School of Life and Medical Sciences, University of Hertfordshire, Hosted by Global Academic Foundation, R5 New Garden City, New Administrative Capital, Cairo 11835, Egypt; (N.K.S.); (L.Z.)
| | - Frédéric Schiets
- UMR 5280 CNRS, University Claude Bernard Lyon 1 ISA, 5 Rue de la Doua, 69100 Villeurbanne, France; (F.S.); (P.M.)
| | - Pedro Marote
- UMR 5280 CNRS, University Claude Bernard Lyon 1 ISA, 5 Rue de la Doua, 69100 Villeurbanne, France; (F.S.); (P.M.)
| | - Iulia-Stefania Voicu
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (A.-M.B.); (M.D.); (I.-S.V.); (C.M.)
| | - Cristian Matei
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (A.-M.B.); (M.D.); (I.-S.V.); (C.M.)
| | - Laila Ziko
- Department of Biochemistry, School of Life and Medical Sciences, University of Hertfordshire, Hosted by Global Academic Foundation, R5 New Garden City, New Administrative Capital, Cairo 11835, Egypt; (N.K.S.); (L.Z.)
| | - Daniela Berger
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania; (A.-M.B.); (M.D.); (I.-S.V.); (C.M.)
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Ștefănescu BE, Socaci SA, Fărcaș AC, Nemeș SA, Teleky BE, Martău GA, Călinoiu LF, Mitrea L, Ranga F, Grigoroaea D, Vodnar DC, Socaciu C. Characterization of the Chemical Composition and Biological Activities of Bog Bilberry ( Vaccinium uliginosum L.) Leaf Extracts Obtained via Various Extraction Techniques. Foods 2024; 13:258. [PMID: 38254559 PMCID: PMC10814626 DOI: 10.3390/foods13020258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/10/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
This investigation aimed to assess the chemical composition and biological activities of bog bilberry (Vaccinium uliginosum L.) leaves. Hydroethanolic extracts were obtained using four extraction techniques: one conventional (CE) and three alternative methods; ultrasound (UAE), microwave (MAE) and high-pressure (HPE) extractions. Spectrophotometric analysis was conducted to determine their chemical content, including the total phenolic content (TPC) and total flavonoid content (TFC). Furthermore, their antioxidative and antimicrobial properties were evaluated. HPLC (high performance liquid chromatography) analysis identified and quantified 17 phenolic compounds, with chlorogenic acid being the predominant compound, with the lowest level (37.36 ± 0.06 mg/g) for the bog bilberry leaf extract obtained by CE and the highest levels (e.g., HPE = 44.47 ± 0.08 mg/g) for the bog bilberry leaf extracts obtained by the alternative methods. Extracts obtained by HPE, UAE and MAE presented TPC values (135.75 ± 2.86 mg GAE/g; 130.52 ± 1.99 mg GAE/g; 119.23 ± 1.79 mg GAE/g) higher than those obtained by the CE method (113.07 ± 0.98 mg GAE/g). Regarding the TFC values, similar to TPC, the highest levels were registered in the extracts obtained by alternative methods (HPE = 43.16 ± 0.12 mg QE/g; MAE = 39.79 ± 0.41 mg QE/g and UAE = 33.89 ± 0.35 mg QE/g), while the CE extract registered the lowest level, 31.47 ± 0.28 mg QE/g. In the case of DPPH (1,1-diphenyl-2-picrylhydrazyl) antioxidant activity, the extracts from HPE, UAE and MAE exhibited the strongest radical scavenging capacities of 71.14%, 63.13% and 60.84%, respectively, whereas the CE extract registered only 55.37%. According to Microbiology Reader LogPhase 600 (BioTek), a common MIC value of 8.88 mg/mL was registered for all types of extracts against Staphylococcus aureus (Gram-positive bacteria) and Salmonella enterica (Gram-negative bacteria). Moreover, the alternative extraction methods (UAE, HPE) effectively inhibited the growth of Candida parapsilosis, in comparison to the lack of inhibition from the CE method. This study provides valuable insights into bog bilberry leaf extracts, reporting a comprehensive evaluation of their chemical composition and associated biological activities, with alternative extraction methods presenting greater potential for the recovery of phenolic compounds with increased biological activities than the conventional method.
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Affiliation(s)
- Bianca Eugenia Ștefănescu
- Life Science Institute, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (B.E.Ș.); (S.A.N.); (B.E.T.); (G.A.M.); (F.R.); (D.C.V.)
| | - Sonia Ancuța Socaci
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (S.A.S.); (A.C.F.); (C.S.)
| | - Anca Corina Fărcaș
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (S.A.S.); (A.C.F.); (C.S.)
| | - Silvia Amalia Nemeș
- Life Science Institute, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (B.E.Ș.); (S.A.N.); (B.E.T.); (G.A.M.); (F.R.); (D.C.V.)
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (S.A.S.); (A.C.F.); (C.S.)
| | - Bernadette Emőke Teleky
- Life Science Institute, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (B.E.Ș.); (S.A.N.); (B.E.T.); (G.A.M.); (F.R.); (D.C.V.)
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (S.A.S.); (A.C.F.); (C.S.)
| | - Gheorghe Adrian Martău
- Life Science Institute, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (B.E.Ș.); (S.A.N.); (B.E.T.); (G.A.M.); (F.R.); (D.C.V.)
- Department of Food Engineering, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
| | - Lavinia Florina Călinoiu
- Life Science Institute, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (B.E.Ș.); (S.A.N.); (B.E.T.); (G.A.M.); (F.R.); (D.C.V.)
| | - Laura Mitrea
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (S.A.S.); (A.C.F.); (C.S.)
| | - Floricuța Ranga
- Life Science Institute, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (B.E.Ș.); (S.A.N.); (B.E.T.); (G.A.M.); (F.R.); (D.C.V.)
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (S.A.S.); (A.C.F.); (C.S.)
| | - Dan Grigoroaea
- Călimani National Park Administration, Șaru Dornei, 727515 Suceava, Romania;
| | - Dan Cristian Vodnar
- Life Science Institute, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (B.E.Ș.); (S.A.N.); (B.E.T.); (G.A.M.); (F.R.); (D.C.V.)
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (S.A.S.); (A.C.F.); (C.S.)
| | - Carmen Socaciu
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (S.A.S.); (A.C.F.); (C.S.)
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