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Vrca I, Orhanović S, Pezelj I, Sušić K, Dunkić V, Kremer D, Nazlić M. Identification of Phenolic Compounds Present in Three Speedwell ( Veronica L.) Species and Their Antioxidant Potential. Antioxidants (Basel) 2024; 13:738. [PMID: 38929177 PMCID: PMC11200581 DOI: 10.3390/antiox13060738] [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: 04/26/2024] [Revised: 06/12/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Extracts from Veronica species (speedwells) are known for the various biological activities they show, such as cytotoxic, antimicrobial, anti-inflammatory, and antioxidant activities. Also, the plants from this genus are known as medicinal plants used in traditional medicine worldwide. Phenolic compounds are specialized metabolites that contribute to biological activity the most. Therefore, the aim of this research is identification and quantification of phenolic compounds present in three Veronica species (Veronica anagallis-aquatica L., Veronica persica Poir., and Veronica polita Fr.) using the liquid chromatography-mass spectrometry (LC-MS/MS) technique. All extracts were tested for antioxidant activity with two methods: DPPH (2,2-diphenyl-1-picrylhydrazyl) and ORAC (oxygen radical absorbance capacity). Also, standards for compounds that were detected in the highest amount in all species were also tested for antioxidant activity. Three different solvents (pure methanol, 80% ethanol, and water) were used for the extraction of phenolic components and their comparison in order to test their antioxidant activity as a final goal. The main compounds present in the tested Veronica extracts were: p-hydroxybenzoic acid, vanillic acid, caffeic acid, gentisic acid, and apigenin. V. anagallis-aquatica contained the highest amount of phenolic components in comparison with the two other tested species, V. persica and V. polita. Caffeic acid showed the highest antioxidant activity in both studied methods with an IC50 value for DPPH activity of 1.99 µg/mL. For the plant extracts, in general, methanolic/ethanolic extracts showed higher activity than water extracts in both methods which was expected, as organic solutions extract more phenolic compounds. This research points to the potential application of extracts of different Veronica species for antioxidant activity.
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Affiliation(s)
- Ivana Vrca
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (I.V.); (S.O.); (I.P.); (K.S.); (V.D.)
| | - Stjepan Orhanović
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (I.V.); (S.O.); (I.P.); (K.S.); (V.D.)
| | - Ivana Pezelj
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (I.V.); (S.O.); (I.P.); (K.S.); (V.D.)
| | - Karolina Sušić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (I.V.); (S.O.); (I.P.); (K.S.); (V.D.)
| | - Valerija Dunkić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (I.V.); (S.O.); (I.P.); (K.S.); (V.D.)
| | - Dario Kremer
- Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia;
| | - Marija Nazlić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (I.V.); (S.O.); (I.P.); (K.S.); (V.D.)
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Boussaha S, Bramucci M, Rebbas K, Quassinti L, Mekkiou R, Maggi F. Chemical composition and anticancer activity of the essential oil from Vicia ochroleuca Ten., quite rare plant in Kabylia (Algeria). Nat Prod Res 2023; 37:4181-4187. [PMID: 36772804 DOI: 10.1080/14786419.2023.2176492] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 01/24/2023] [Indexed: 02/12/2023]
Abstract
The search for new bioactive substances with anticancer activity and the understanding of their mechanisms of action are high priorities in the research effort toward more effective cancer treatments. In this article, we analyzed, for the first time, the chemical composition of the essential oil (EO) hydrodistilled from the aerial parts of Vicia ochroleuca Ten. (Leguminosae) by GC-MS. A total of sixteen compounds representing 82.2% of the total composition were identified. The major compounds were phytone (20.11%), hexadecanoic acid (10.23%), 1-octen-3-ol (9.84%), and 10-epi-α-cadinol (7.13%). Additionally, using the MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide) method, the EO was tested in vitro against a panel of human cancer cells, including breast (MDA-MB 231), colon (HCT116), melanoma (A375), and glioblastoma (T98G), with corresponding IC50 values of 23.07, 47.05, 51.64, and 64.07 μg/mL, respectively. The results demonstrate cytotoxic activity and suggest that V. ochroleuca EO could be regarded as a natural bioactive source.
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Affiliation(s)
- Sara Boussaha
- Unité de Recherche: Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques, Université Frères Mentouri, Constantine, Algérie
- Ecole Nationale Supérieure de Biotechnologie Taoufik Khaznadar, Ville Universitaire Ali Mendjli, Constantine, Algérie
| | | | - Khellaf Rebbas
- Department of Biology, Faculty of Sciences, University Mohamed Boudiaf of M'Sila, Algeria
- Agro-Biotechnology and Nutrition Laboratory in Arid and Semi-Arid Zones, Ibn Khaldoun University, Tiaret, Algeria
| | | | - Ratiba Mekkiou
- Unité de Recherche: Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques, Université Frères Mentouri, Constantine, Algérie
| | - Filippo Maggi
- School of Pharmacy, University of Camerino, Camerino, Italy
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Vrca I, Čikeš Čulić V, Lozić M, Dunkić N, Kremer D, Ruščić M, Nazlić M, Dunkić V. Isolation of Volatile Compounds by Microwave-Assisted Extraction from Six Veronica Species and Testing of Their Antiproliferative and Apoptotic Activities. PLANTS (BASEL, SWITZERLAND) 2023; 12:3244. [PMID: 37765408 PMCID: PMC10535125 DOI: 10.3390/plants12183244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/08/2023] [Accepted: 09/09/2023] [Indexed: 09/29/2023]
Abstract
This study was conducted to determine the differences in the chemical composition of the essential oils and hydrosols of six different Veronica species (V. agrestis, V. anagalloides, V. austriaca ssp. jacquinii, V. beccabunga, Veronica cymbalaria, and V. officinalis) and to test their antiproliferative and apoptotic activities, according to the authors' knowledge, because of insufficient research and lack of information. Also, the goal was to determine which obtained samples were better in achieving antiproliferative and apoptotic activities and due to which volatile components. Therefore, essential oils (EOs) and hydrosols (HYs) were isolated from the above-mentioned Veronica species by microwave-assisted extraction (MAE). Phytochemical identification of the free volatile compounds was performed using a GC equipped with a flame ionization detector and a mass spectrometer. Their antiproliferative and apoptotic activities against two human cancer cell lines, breast cancer cell line MDA-MB-231 and bladder cancer cell line T24, were determined. The main compounds identified in the studied Veronica EOs and HYs were terpinen-4-ol (0.34-6.49%), linalool (0.34-6.61%), (E)-caryophyllene (0.97-7.55%), allo-aromadendrene (0.18-2.21%), caryophyllene oxide (1.42-23.83%), benzene acetaldehyde (0.26-13.34%), and β-ionone (1.08-16.53%). In general, HYs of the tested Veronica species showed higher antiproliferative activity (IC50 13.41-42.05%) compared to EOs (IC50 158.1-970.4 µg/mL) on MDA-MB-231 and T24 cancer cell lines after 48 and 72 h. V. agrestis EO showed the best apoptotic effect among the EOs on the MDA-MB-231 cancer cell line (10.47 ± 0.53% and 9.06 ± 0.74% of early/late apoptosis, compared with control 3.61 ± 0.62% and 0.80 ± 0.17% of early/late apoptosis, respectively) and among the HYs V. cymbalaria showed 9.95 ± 1.05% and 3.06 ± 0.28% of early/late apoptosis and V. anagalloides 8.29 ± 1.09% and 1.95 ± 0.36% of early/late apoptosis compared with control (for EO was 7.45 ± 1.01% and 0.54 ± 0.25%, and for HY was 4.91 ± 1.97% and 0.70 ± 0.09% of early/late apoptosis, respectively) on the T24 cancer cell line. Future research will include other Croatian species of the genus Veronica to gain a more complete insight into the biological activity of the volatile products of this genus for potential discovery of drugs based on natural plant extracts.
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Affiliation(s)
- Ivana Vrca
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (I.V.); (M.R.); (M.N.)
| | - Vedrana Čikeš Čulić
- School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia; (V.Č.Č.); (M.L.)
| | - Mirela Lozić
- School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia; (V.Č.Č.); (M.L.)
| | - Niko Dunkić
- Practice of General Medicine, Antuna Gustava Matoša 2, 21000 Split, Croatia;
| | - Dario Kremer
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovačića 1, 10000 Zagreb, Croatia;
| | - Mirko Ruščić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (I.V.); (M.R.); (M.N.)
| | - Marija Nazlić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (I.V.); (M.R.); (M.N.)
| | - Valerija Dunkić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (I.V.); (M.R.); (M.N.)
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Hydrodistillation and Microwave Extraction of Volatile Compounds: Comparing Data for Twenty-One Veronica Species from Different Habitats. PLANTS 2022; 11:plants11070902. [PMID: 35406882 PMCID: PMC9002677 DOI: 10.3390/plants11070902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/25/2022] [Accepted: 03/26/2022] [Indexed: 11/16/2022]
Abstract
Free volatile compounds were isolated from 21 Croatian Veronica species studied by hydrodistillation (HD) and microwave extraction (ME) and analyzed by gas chromatography coupled with mass spectrometry. Principal Component Analysis (PCA) distinguished some clusters based on the relative proportion of major compounds, such as hexadecanoic acid, hexahydrofarnesyl acetone, phytol, E-caryophyllene, and caryophyllene oxide, which were identified in all species studied by both isolation methods. In addition to these compounds, germacrene D, δ-selinene, and eicosane were also identified in five samples from dry habitats isolated using ME. Allo-aromadendrene and β-ionone are particularly abundant in five species from wet habitats isolated by both methods. The peculiarities of Veronica species from moderate habitats isolated with HD are benzene acetaldehyde, n-nonanal, and the identification of significant compounds from the hydrocarbon class, while the peculiarity of ME is (E)-β-damascenone. In this article, we present new results on the phytochemical characterization of Veronica species from different habitats. The biological potential of these compounds should be further investigated for a better understanding and utilization of the specialized plant metabolites.
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