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Vrca I, Jug B, Fredotović Ž, Vuko E, Brkan V, Šestić L, Juretić L, Dunkić V, Nazlić M, Ramić D, Smole Možina S, Kremer D. Significant Benefits of Environmentally Friendly Hydrosols from Tropaeolum majus L. Seeds with Multiple Biological Activities. Plants (Basel) 2023; 12:3897. [PMID: 38005794 PMCID: PMC10675760 DOI: 10.3390/plants12223897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/20/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023]
Abstract
Tropaeolum majus L. is a traditional medicinal plant with a wide range of biological activities due to the degradation products of the glucosinolate glucotropaeolin. Therefore, the goals of this study were to identify volatiles using gas chromatography-mass spectrometry analysis (GC-MS) of the hydrosols (HYs) isolated using microwave-assisted extraction (MAE) and microwave hydrodiffusion and gravity (MHG). Cytotoxic activity was tested against a cervical cancer cell line (HeLa), human colon cancer cell line (HCT116), human osteosarcoma cell line (U2OS), and healthy cell line (RPE1). The effect on wound healing was investigated using human keratinocyte cells (HaCaT), while the antibacterial activity of the HYs was tested against growth and adhesion to a polystyrene surface of Staphylococcus aureus and Escherichia coli. Antiphytoviral activity against tobacco mosaic virus (TMV) was determined. The GC-MS analysis showed that the two main compounds in the HYs of T. majus are benzyl isothiocyanate (BITC) and benzyl cyanide (BCN) using the MAE (62.29% BITC and 15.02% BCN) and MHG (17.89% BITC and 65.33% BCN) extraction techniques. The HYs obtained using MAE showed better cytotoxic activity against the tested cancer cell lines (IC50 value of 472.61-637.07 µg/mL) compared to the HYs obtained using MHG (IC50 value of 719.01-1307.03 μg/mL). Both concentrations (5 and 20 µg/mL) of T. majus HYs using MAE showed a mild but statistically non-significant effect in promoting gap closure compared with untreated cells, whereas the T. majus HY isolated using MHG at a concentration of 15 µg/mL showed a statistically significant negative effect on wound healing. The test showed that the MIC concentration was above 0.5 mg/mL for the HY isolated using MAE, and 2 mg/mL for the HY isolated using MHG. The HY isolated using MHG reduced the adhesion of E. coli at a concentration of 2 mg/mL, while it also reduced the adhesion of S. aureus at a concentration of 1 mg/mL. Both hydrosols showed excellent antiphytoviral activity against TMV, achieving100% inhibition of local lesions on the leaves of infected plants, which is the first time such a result was obtained with a hydrosol treatment. Due to the antiphytoviral activity results, hydrosols of T. majus have a promising future for use in agricultural production.
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Affiliation(s)
- Ivana Vrca
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (Ž.F.); (E.V.); (V.B.); (L.Š.); (V.D.); (M.N.)
| | - Blaž Jug
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva ulica 101, 1000 Ljubljana, Slovenia; (B.J.); (D.R.); (S.S.M.)
| | - Željana Fredotović
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (Ž.F.); (E.V.); (V.B.); (L.Š.); (V.D.); (M.N.)
| | - Elma Vuko
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (Ž.F.); (E.V.); (V.B.); (L.Š.); (V.D.); (M.N.)
| | - Valentina Brkan
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (Ž.F.); (E.V.); (V.B.); (L.Š.); (V.D.); (M.N.)
| | - Loriana Šestić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (Ž.F.); (E.V.); (V.B.); (L.Š.); (V.D.); (M.N.)
| | - Lea Juretić
- Faculty of Medicine, University of Rijeka, Braće Branchetta 20, 51000 Rijeka, Croatia;
| | - Valerija Dunkić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (Ž.F.); (E.V.); (V.B.); (L.Š.); (V.D.); (M.N.)
| | - Marija Nazlić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (Ž.F.); (E.V.); (V.B.); (L.Š.); (V.D.); (M.N.)
| | - Dina Ramić
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva ulica 101, 1000 Ljubljana, Slovenia; (B.J.); (D.R.); (S.S.M.)
| | - Sonja Smole Možina
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva ulica 101, 1000 Ljubljana, Slovenia; (B.J.); (D.R.); (S.S.M.)
| | - Dario Kremer
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Ante Kovačića 1, 10000 Zagreb, Croatia;
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Dunkić N, Nazlić M, Dunkić V, Bilić I. Analysis of Post-COVID-19 Guillain-Barré Syndrome over a Period of One Year in the University Hospital of Split (Croatia). Neurol Int 2023; 15:1359-1370. [PMID: 37987459 PMCID: PMC10661271 DOI: 10.3390/neurolint15040086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/22/2023] Open
Abstract
The virus SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) is capable of attacking the nervous system in several ways and leading to neurological diseases such as GBS (Guillain-Barré syndrome) through the resulting neurotropism and immune response. The aim of this study is to show the relationship between Coronavirus disease (COVID-19) and GBS and to better understand the clinical symptoms to prevent poor outcomes. Data from 15 patients were extracted from the Department of Neurology, University Hospital of Split, Croatia, for the year 2021. The age of the patients ranged from 26 to 89 years, of whom 27% were women. Sixty seven percent of all GBS patients recovered from COVID-19 infection, whereas post-vaccinal polyradiculoneuritis was detected in 6%. Forty four percent of the patients who developed GBS had a severe form of COVID-19 infection. Forty percent of patients were treated with intravenous immunoglobulins (IVIG), followed by therapeutic plasma exchange (PLEX) in 27%. After the therapy, improvement was observed in 13 patients, while two patients died. The results suggest that SARS-CoV-2 triggers GBS because it follows a similar pattern of infection as the other viral and bacterial agents that contribute to the onset of GBS. There is no evidence that prior infection with COVID-19 worsens the clinical presentation of GBS.
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Affiliation(s)
- Niko Dunkić
- Practice of General Medicine, A.G. Matoša 2, 21000 Split, Croatia;
| | - Marija Nazlić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (M.N.); (V.D.)
| | - Valerija Dunkić
- Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (M.N.); (V.D.)
| | - Ivica Bilić
- School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia
- Neurology Department, University Hospital Split, Spinčićeva 1, 21000 Split, Croatia
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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) 2023; 12:3244. [PMID: 37765408 PMCID: PMC10535125 DOI: 10.3390/plants12183244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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Popović M, Burčul F, Veršić Bratinčević M, Režić Mužinić N, Skroza D, Frleta Matas R, Nazlić M, Ninčević Runjić T, Jukić Špika M, Bego A, Dunkić V, Vitanović E. In the Beginning Was the Bud: Phytochemicals from Olive ( Olea europaea L.) Vegetative Buds and Their Biological Properties. Metabolites 2023; 13:metabo13020237. [PMID: 36837856 PMCID: PMC9966879 DOI: 10.3390/metabo13020237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 01/30/2023] [Accepted: 02/03/2023] [Indexed: 02/09/2023] Open
Abstract
Even though Olea europaea L. is one of the most important and well-studied crops in the world, embryonic parts of the plants remain largely understudied. In this study, comprehensive phytochemical profiling of olive vegetative buds of two Croatian cultivars, Lastovka and Oblica, was performed with an analysis of essential oils and methanol extracts as well as biological activities (antioxidant, antimicrobial, and cytotoxic activities). A total of 113 different volatiles were identified in essential oils with hydrocarbons accounting for up to 60.30% and (Z)-3-heptadecene being the most abundant compound. Oleacein, oleuropein, and 3-hydroxytyrosol had the highest concentrations of all phenolics in the bud extracts. Other major compounds belong to the chemical classes of sugars, fatty acids, and triterpenoid acids. Antioxidant, antimicrobial, and cytotoxic activities were determined for both cultivars. Apart from antioxidant activity, essential oils had a weak overall biological effect. The extract from cultivar Lastovka showed much better antioxidant activity than both isolates with both methods (with an oxygen radical absorbance capacity value of 1835.42 μM TE/g and DPPH IC50 of 0.274 mg/mL), as well as antimicrobial activity with the best results against Listeria monocytogenes. The human breast adenocarcinoma MDA-MB-231 cell line showed the best response for cultivar Lastovka bud extract (IC50 = 150 μg/mL) among three human cancer cell lines tested. These results demonstrate great chemical and biological potential that is hidden in olive buds and the need to increase research in the area of embryonic parts of plants.
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Affiliation(s)
- Marijana Popović
- Department of Applied Science, Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia
- Correspondence: ; Tel.: +385-21434450
| | - Franko Burčul
- Department of Analytical Chemistry, Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia
| | - Maja Veršić Bratinčević
- Department of Applied Science, Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia
| | - Nikolina Režić Mužinić
- Department of Medical Chemistry and Biochemistry, School of Medicine, University of Split, Šoltanska 2, 21000 Split, Croatia
| | - Danijela Skroza
- Department of Food Technology and Biotechnology, Faculty of Chemistry and Technology, University of Split, Ruđera Boškovića 35, 21000 Split, Croatia
| | - Roberta Frleta Matas
- Center of Excellence for Science and Technology-Integration of Mediterranean Region (STIM), Faculty of Science, University of Split, 21000 Split, Croatia
| | - Marija Nazlić
- Department of Biology, Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia
| | - Tonka Ninčević Runjić
- Department for Plant Sciences, Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia
| | - Maja Jukić Špika
- Department of Applied Science, Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia
- Centre of Excellence for Biodiversity and Molecular Plant Breeding (CoE CroP-BioDiv), Svetošimunska Cesta 25, 10000 Zagreb, Croatia
| | - Ana Bego
- Department of Applied Science, Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia
| | - Valerija Dunkić
- Department of Biology, Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia
| | - Elda Vitanović
- Department of Applied Science, Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia
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Nazlić M, Kremer D, Akrap K, Topić S, Dunkić V. Richness of Specialized Metabolites in Veronica acinifolia L. Hydrosols. Maced Pharm Bull 2022. [DOI: 10.33320/maced.pharm.bull.2022.68.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
- Marija Nazlić
- 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
| | - Karla Akrap
- Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia
| | - Snježana Topić
- Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia
| | - Valerija Dunkić
- Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Vuko E, Dunkić V, Ruščić M, Nazlić M, Mandić N, Soldo B, Šprung M, Fredotović Ž. Chemical Composition and New Biological Activities of Essential Oil and Hydrosol of Hypericum perforatum L. ssp. veronense (Schrank) H. Lindb. Plants (Basel) 2021; 10:1014. [PMID: 34069597 PMCID: PMC8161325 DOI: 10.3390/plants10051014] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/16/2021] [Accepted: 05/17/2021] [Indexed: 11/16/2022]
Abstract
The chemical profile, antiproliferative, antioxidant and antiphytoviral activities of the species Hypericum perforatum ssp. veronense (Schrank) H. Lindb. (Clusiaceae) were investigated. Free volatiles were isolated and the chemical composition was determined in the lipophilic fraction (essential oil) and for the first time in the water fraction (hydrosol). The aim is to provide phytochemical data for H. perforatum ssp. veronense useful for distinguishing ssp. veronense from ssp. angustifolium, as there are taxonomic disagreements between them and the composition of the secretory products may be helpful in this respect. In the essential oil, the most abundant compounds identified were α-pinene and n-nonane, while in the hydrosol, myrtenol, carvacrol and α-pinene were the most abundant. Overall, the class of monoterpenes and oxygenated monoterpenes dominated in the EO and hydrosol samples. The essential oil showed high antioxidant activity, in contrast to the antiproliferative activity, where the hydrosol showed exceptional activity against three cancer cell lines: Hela (cervical cancer cell line), HCT116 (human colon cancer cell line) and U2OS (human osteosarcoma cell line). Both the essential oil and hydrosol showed antiphytoviral activity against tobacco mosaic virus infection on the local host plants. This is the first report dealing with biological activities of hydrosol of H. perforatum ssp. veronense, and the obtained results suggest that this traditional medicinal plant is a valuable source of volatiles with promising antiproliferative, antioxidant and antiphytoviral activities.
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Affiliation(s)
- Elma Vuko
- Department of Biology, Faculty of Science, University of Split, R. Boškovića 33, 21000 Split, Croatia; (E.V.); (V.D.); (M.R.); (M.N.); (N.M.)
| | - Valerija Dunkić
- Department of Biology, Faculty of Science, University of Split, R. Boškovića 33, 21000 Split, Croatia; (E.V.); (V.D.); (M.R.); (M.N.); (N.M.)
| | - Mirko Ruščić
- Department of Biology, Faculty of Science, University of Split, R. Boškovića 33, 21000 Split, Croatia; (E.V.); (V.D.); (M.R.); (M.N.); (N.M.)
| | - Marija Nazlić
- Department of Biology, Faculty of Science, University of Split, R. Boškovića 33, 21000 Split, Croatia; (E.V.); (V.D.); (M.R.); (M.N.); (N.M.)
| | - Nela Mandić
- Department of Biology, Faculty of Science, University of Split, R. Boškovića 33, 21000 Split, Croatia; (E.V.); (V.D.); (M.R.); (M.N.); (N.M.)
| | - Barbara Soldo
- Department of Chemistry, Faculty of Science, University of Split, R. Boškovića 33, 21000 Split, Croatia; (B.S.); (M.Š.)
| | - Matilda Šprung
- Department of Chemistry, Faculty of Science, University of Split, R. Boškovića 33, 21000 Split, Croatia; (B.S.); (M.Š.)
| | - Željana Fredotović
- Department of Biology, Faculty of Science, University of Split, R. Boškovića 33, 21000 Split, Croatia; (E.V.); (V.D.); (M.R.); (M.N.); (N.M.)
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Nazlić M, Kremer D, Grubešić RJ, Soldo B, Vuko E, Stabentheiner E, Ballian D, Bogunić F, Dunkić V. Endemic Veronica saturejoides Vis. ssp. saturejoides-Chemical Composition and Antioxidant Activity of Free Volatile Compounds. Plants (Basel) 2020; 9:plants9121646. [PMID: 33255775 PMCID: PMC7760375 DOI: 10.3390/plants9121646] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 01/09/2023]
Abstract
Chemical profile and antioxidant activity of the species Veronica saturejoides Vis. ssp. saturejoides (Plantaginaceae)-which is endemic to Croatia, Bosnia and Herzegovina and Montenegro -were investigated. Volatile compounds produced by glandular trichomes (composed of one stalk cell and two elliptically formed head cells according to scanning electron microscope investigation) were isolated from the plants collected in two locations. Additionally, as a part of specialized metabolites, total polyphenols, total tannins, total flavonoids and total phenolic acids were determined spectrophotometrically. In the lipophilic volatile fractions-essential oils, the most abundant compounds identified were hexahydrofarnesyl acetone, caryophyllene oxide and hexadecanoic acid. In total, the class of oxygenated sesquiterpenes and the group of fatty aldehydes, acids and alcoholic compounds dominated in the essential oils. In the hydrophilic volatile fractions-hydrosols, the most abundant compounds identified were trans-p-mentha-1(7),8-dien-2-ol, allo-aromadendrene and (E)-caryophyllene. A group of oxygenated monoterpenes and the sesquiterpene hydrocarbons dominated in the hydrosols. Antioxidant activity of essential oils and hydrosols was tested with two methods: 2,2'-diphenyl-1-picrylhydrazyl (DPPH) and oxygen radical absorbance capacity (ORAC). Essential oils showed higher antioxidant activity than hydrosols and showed similar antioxidant activity to Rosmarinus officinalis essential oil. Obtained results demonstrate that this genus is a potential source of volatiles with antioxidant activity.
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Affiliation(s)
- Marija Nazlić
- Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia; (M.N.); (B.S.); (E.V.)
| | - Dario Kremer
- Faculty of Pharmacy and Biochemistry, University of Zagreb, A. Kovačića 1, HR-10000 Zagreb, Croatia; (D.K.); (R.J.G.)
| | - Renata Jurišić Grubešić
- Faculty of Pharmacy and Biochemistry, University of Zagreb, A. Kovačića 1, HR-10000 Zagreb, Croatia; (D.K.); (R.J.G.)
| | - Barbara Soldo
- Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia; (M.N.); (B.S.); (E.V.)
| | - Elma Vuko
- Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia; (M.N.); (B.S.); (E.V.)
| | - Edith Stabentheiner
- Institute of Biology, Karl-Franzens University, Schubertstrasse 51, A-8010 Graz, Austria;
| | - Dalibor Ballian
- Faculty of Forestry, University of Sarajevo, Zagrebačka 20, BIH-71000 Sarajevo, Bosnia and Herzegovina; (D.B.); (F.B.)
- Slovenian Forestry Institute, Večna pot 2, SI-1000 Ljubljana, Slovenia
| | - Faruk Bogunić
- Faculty of Forestry, University of Sarajevo, Zagrebačka 20, BIH-71000 Sarajevo, Bosnia and Herzegovina; (D.B.); (F.B.)
| | - Valerija Dunkić
- Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia; (M.N.); (B.S.); (E.V.)
- Correspondence: ; Tel.: +38-521-619-296
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