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Alberti Á, Riethmüller E, Felegyi-Tóth CA, Czigle S, Czégényi D, Filep R, Papp N. Phytochemical Investigation of Polyphenols from the Aerial Parts of Tanacetum balsamita Used in Transylvanian Ethnobotany and Parallel Artificial Membrane Permeability Assay. PLANTS (BASEL, SWITZERLAND) 2024; 13:1652. [PMID: 38931084 PMCID: PMC11207953 DOI: 10.3390/plants13121652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/10/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024]
Abstract
In this study, based on ethnobotanical data recorded in Transylvania, the polyphenolic compounds and the permeability of the aerial part's extract of Tanacetum balsamita were investigated. Ultrahigh-performance liquid chromatography-tandem mass spectrometry was applied for the analysis of the extracts. Parallel artificial membrane permeability assay (PAMPA) for the gastrointestinal tract and the blood-brain barrier was conducted. In the ethanolic and aqueous extracts of the species traditionally used for wound, furuncle, and liver disorders, 92 polyphenols were characterized (e.g., flavonoid, hydroxycinnamic acid, catechin, dihydroxybenzoyl, lignan derivatives, and a monoterpene) including 54 compounds identified for the first time in the plant. In the PAMPA tests, eight components were shown to be capable of passive diffusion across the studied membranes. These include apigenin and seven methoxylated flavonoid derivatives. Based on these results, methoxylated flavonoids might promote the pharmacological potential of T. balsamita to be applied in the enhancement of novel remedies.
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Affiliation(s)
- Ágnes Alberti
- Department of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, Üllői út 26, HU-1085 Budapest, Hungary; (Á.A.); (E.R.); (C.A.F.-T.)
| | - Eszter Riethmüller
- Department of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, Üllői út 26, HU-1085 Budapest, Hungary; (Á.A.); (E.R.); (C.A.F.-T.)
| | - Csenge Anna Felegyi-Tóth
- Department of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, Üllői út 26, HU-1085 Budapest, Hungary; (Á.A.); (E.R.); (C.A.F.-T.)
| | - Szilvia Czigle
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University Bratislava, Odbojárov 10, SK-832 32 Bratislava, Slovakia
| | - Dóra Czégényi
- Department of Hungarian Ethnography and Anthropology, University of Babeş-Bolyai of Cluj-Napoca, Horea 31, RO-400202 Cluj-Napoca, Romania;
| | - Rita Filep
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, Rókus u. 2., HU-7624 Pécs, Hungary;
| | - Nóra Papp
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, Rókus u. 2., HU-7624 Pécs, Hungary;
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Abdelbaset S, Ayoub IM, Mohamed OG, Tripathi A, Eldahshan OA, El-Kersh DM. Metabolic profiling of Vitex Pubescens Vahl bark via UPLC-ESI-QTOF/MS/MS analysis and evaluation of its antioxidant and acetylcholinesterase inhibitory activities. BMC Complement Med Ther 2024; 24:232. [PMID: 38877470 PMCID: PMC11177471 DOI: 10.1186/s12906-024-04520-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 05/27/2024] [Indexed: 06/16/2024] Open
Abstract
BACKGROUND Alzheimer's disease is a neurodegenerative age-related disease that primarily affects the elderly population leading to progressive memory impairments and neural deficits. It is counted as a major cause of geriatric dependency and disability. The pathogenesis of Alzheimer's disease incidence is complex and involves various hypotheses, including the cholinergic hypothesis, deposition of β-amyloid plaques, neuroinflammation, oxidative stress, and apoptosis. Conventional treatments such as donepezil aim to delay the symptoms but do not affect the progression of the disease and may cause serious side effects like hepatoxicity. The use of natural candidates for Alzheimer's disease treatment has drawn the attention of many researchers as it offers a multitargeted approach. METHODS This current study investigates the metabolic profiles of total defatted methanolic extract of Vitex pubescens bark and its polar fractions, viz. ethyl acetate and n-butanol, using ultra-performance liquid chromatography-electrospray ionization-quadrupole time-of-flight tandem mass spectrometry(UPLC-ESI-QTOF/MS/MS) technique as well as evaluate the antioxidant using free radical scavenging assays, viz. DPPH and ABTS assays and in-vitro acetylcholinesterase inhibitory activities using Ellman's microplate assay. RESULTS Metabolic profiling revealed a total of 71, 43, and 55 metabolites tentatively identified in the defatted methanolic extract, ethyl acetate, and n-butanol fractions, respectively. Phenolic acids were the most abundant class, viz. benzoic acids, and acyl quinic acid derivatives followed by flavonoids exemplified mainly by luteolin-C-glycosides and apigenin-C-glycosides. Quantification of the total phenolic and flavonoid contents in the total defatted methanolic extract confirmed its enrichment with phenolics and flavonoids equivalent to 138.61 ± 9.39 µg gallic acid/mg extract and 119.63 ± 4.62 µg rutin/mg extract, respectively. Moreover, the total defatted methanolic extract exhibited promising antioxidant activity confirmed through DPPH and ABTS assays with a 50% inhibitory concentration (IC50) value equivalent to 52.79 ± 2.16 µg/mL and 10.02 ± µg/mL, respectively. The inhibitory activity of acetylcholine esterase (AchE) was assessed using in-vitro Ellman's colorimetric assay, the total defatted methanolic extract, ethyl acetate, and n-butanol fractions exhibited IC50 values of 52.9, 15.1 and 108.8 µg/mL that they proved the significant inhibition of AchE activity. CONCLUSION The results obtained herein unraveled the potential use of the total methanolic extract of Vitex pubescens bark and its polar fractions as natural candidates for controlling Alzheimer's disease progression.
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Affiliation(s)
- Safa Abdelbaset
- Pharmacognosy Department, Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Iriny M Ayoub
- Pharmacognosy Department, Faculty of Pharmacy, Ain Shams University, Cairo, 11566, Egypt
| | - Osama G Mohamed
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo, 11562, Egypt
- Natural Products Discovery Core, Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Ashootosh Tripathi
- Natural Products Discovery Core, Life Sciences Institute, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Omayma A Eldahshan
- Pharmacognosy Department, Faculty of Pharmacy, Ain Shams University, Cairo, 11566, Egypt.
- Center for Drug Discovery Research and Development, Ain Shams University, Cairo, Egypt.
| | - Dina M El-Kersh
- Pharmacognosy Department, Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
- Drug Research and Development Group (DRD-G), The British University in Egypt (BUE), Cairo, 11837, Egypt
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3
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El Khodary YA, Ayoub IM, Pério P, Bourgeade-Delmas S, Ibrahim N, El-Ahmady SH. A comparative untargeted metabolomic analysis and assessment of antiplasmodial potential of nine Albizia species. Arch Pharm (Weinheim) 2024; 357:e2300543. [PMID: 38412461 DOI: 10.1002/ardp.202300543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/16/2024] [Accepted: 01/31/2024] [Indexed: 02/29/2024]
Abstract
The genus Albizia is one of the richest genera in phenolics besides other classes of secondary metabolites including saponins, terpenes, and alkaloids with promising medicinal applications. In the current study, UHPLC-PDA-ESI-MS/MS-based metabolic profiling of leaves of Albizia lebbeck, Albizia julibrissin, Albizia odoratissima, Albizia procera, Albizia anthelmintica, Albizia guachapele, Albizia myriophylla, Albizia richardiana, and Albizia lucidior resulted in the tentative identification of 64 metabolites, mainly flavonoids, phenolic acids, saponins, and alkaloids. Some metabolites were identified in Albizia for the first time and could be used as species-specific chemotaxonomic markers, including: apigenin 7-O-dihydroferuloyl hexoside isomers, apigenin 7-O-pentosyl hexoside, quercetin 3-O-rutinoside 7-O-deoxyhexoside, quercetin 3,7-di-O-hexoside deoxyhexoside, quercetin 7-O-feruloyl hexoside, methyl myricetin 7-O-deoxyhexoside, kaempferol di-3-O-di-deoxyhexoside-7-O-hexoside, and kaempferol 3-O-neohesperidoside 7-O-hexoside. Comparative untargeted metabolomic analysis was undertaken to discriminate between species and provide a chemotaxonomic clue that can be used together with morphological and genetic analyses for more accurate classification within this genus. Moreover, the in vitro antiplasmodial activity was assessed and correlated to the metabolic profile of selected species. This was followed by a molecular docking study and absorption, distribution, metabolism, excretion, and toxicity (ADMET) prediction of the identified budmunchiamine alkaloids, revealing promising interactions with the active site of lactate dehydrogenase of Plasmodium falciparum and good pharmacokinetics and pharmacodynamics, which could help in designing novel antimalarial drugs.
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Affiliation(s)
- Yosra A El Khodary
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, Egypt
| | - Iriny M Ayoub
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, Egypt
| | - Pierre Pério
- Faculte des Sciences Pharmaceutiques, Pharma-Dev, UMR 152, Université de Toulouse III-Paul Sabatier, IRD, UPS, Toulouse, France
| | - Sandra Bourgeade-Delmas
- Faculte des Sciences Pharmaceutiques, Pharma-Dev, UMR 152, Université de Toulouse III-Paul Sabatier, IRD, UPS, Toulouse, France
| | - Nehal Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, Egypt
| | - Sherweit H El-Ahmady
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo, Egypt
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Farid MM, Marzouk MM, Ivanova V, Nedialkov P, El Shabrawy MO, Kawashty SA, Sakr MM, Hussein SR, Trendafilova A. Metabolomic Profiling and DNA-Fingerprinting of Newly Recorded White-Flowered Populations of Salvia lanigera Poir. in Egypt. Chem Biodivers 2024; 21:e202400619. [PMID: 38680104 DOI: 10.1002/cbdv.202400619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/01/2024]
Abstract
Salvia lanigera Poir. is a small herbaceous perennial species with violet flowers that grows in low-altitude deserts, and sandy loam. During the collection of S. lanigera, unusual populations with white flowers were found. Therefore, the two populations (violet- and white-flowered) were subjected to comparative investigations, including DNA fingerprinting, chemical composition, and biological evaluation. The two populations showed DNA variations, with 6.66 % polymorphism in ISSR and 25 % in SCoT markers. GC/MS and UHPLC/HRMS of aqueous methanol extracts, led to the tentative identification of 43 and 50 compounds in both populations. In addition, the structures of nine compounds, including four first-time reported compounds in the species, were confirmed by NMR. Furthermore, the total extracts exhibited weak radical scavenging activity against DPPH and a lower inhibitory effect towards acetylcholinesterase. In conclusion, the obtained data suggested that the white-colored flower could be an additional important character record for the Egyptian S. lanigera.
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Affiliation(s)
- Mai M Farid
- Phytochemistry and Plant Systematics Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Cairo, Egypt, PO Box 12622
| | - Mona M Marzouk
- Phytochemistry and Plant Systematics Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Cairo, Egypt, PO Box 12622
| | - Viktoria Ivanova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria
| | - Paraskev Nedialkov
- Pharmacognosy Department, Faculty of Pharmacy, Medical University of Sofia, 1000, Sofia, Bulgaria
| | - Mona O El Shabrawy
- Phytochemistry and Plant Systematics Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Cairo, Egypt, PO Box 12622
| | - Salwa A Kawashty
- Phytochemistry and Plant Systematics Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Cairo, Egypt, PO Box 12622
| | - Mahmoud M Sakr
- Department of Plant Biotechnology, National Research Centre, 12622, Cairo, Egypt
| | - Sameh R Hussein
- Phytochemistry and Plant Systematics Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Cairo, Egypt, PO Box 12622
| | - Antoaneta Trendafilova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria
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Madureira J, Gonçalves I, Cardoso J, Dias MI, Santos PMP, Margaça FMA, Santos-Buelga C, Barros L, Cabo Verde S. Effects of Electron Beam Radiation on the Phenolic Composition and Bioactive Properties of Olive Pomace Extracts. Antioxidants (Basel) 2024; 13:558. [PMID: 38790664 PMCID: PMC11118055 DOI: 10.3390/antiox13050558] [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: 03/05/2024] [Revised: 03/27/2024] [Accepted: 04/29/2024] [Indexed: 05/26/2024] Open
Abstract
Olive pomace is an agro-industrial waste product generated from the olive oil industry and constituted by bioactive compounds with potential applications in several industrial sectors. The purpose of this work was to evaluate the effects of electron beam (e-beam) radiation on olive pomace, specifically on phenolic compounds (by HPLC-DAD-ESI/MS) and the bioactive properties (antioxidant, antiproliferative, and antimicrobial activities) of crude olive pomace (COP) and extracted olive pomace (EOP) extracts. The amount of total flavonoid content and the reducing power of COP extracts were higher than those obtained for EOP extracts. The results suggested that e-beam radiation at 6 kGy increased both total phenolic and total flavonoid contents as well as the reducing power of COP extracts, due to the higher extractability (>2.5-fold) of phenolic compounds from these samples, while decreasing the scavenging activity of extracts. The extracts of both olive pomaces showed antibacterial potential, and COP extracts at 400 µg/mL also presented antiproliferative activity against A549, Caco-2, 293T, and RAW264.7 cell lines, with both properties preserved with the e-beam treatment. All in all, e-beam radiation at 6 kGy appears to be a promising technology to valorize the pollutant wastes of the olive oil industry through enhancing phenolic extractability and bioactive properties, and, furthermore, to contribute to the environmental and economical sustainability of the olive oil industry.
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Affiliation(s)
- Joana Madureira
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, E.N. 10 ao km 139.7, 2695-066 Bobadela LRS, Portugal; (J.M.); (I.G.); (J.C.); (P.M.P.S.); (F.M.A.M.)
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (M.I.D.); (L.B.)
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
- Grupo de Investigación en Polifenoles (GIP-USAL), Facultad de Farmacia, Universidad de Salamanca, Campus Miguel de Unamuno s/n, 37007 Salamanca, Spain;
| | - Inês Gonçalves
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, E.N. 10 ao km 139.7, 2695-066 Bobadela LRS, Portugal; (J.M.); (I.G.); (J.C.); (P.M.P.S.); (F.M.A.M.)
- Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Jéssica Cardoso
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, E.N. 10 ao km 139.7, 2695-066 Bobadela LRS, Portugal; (J.M.); (I.G.); (J.C.); (P.M.P.S.); (F.M.A.M.)
- Escola Superior de Tecnologia da Saúde de Lisboa (ESTeSL), Instituto Politécnico de Lisboa, 1990-096 Lisboa, Portugal
| | - Maria Inês Dias
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (M.I.D.); (L.B.)
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Pedro M. P. Santos
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, E.N. 10 ao km 139.7, 2695-066 Bobadela LRS, Portugal; (J.M.); (I.G.); (J.C.); (P.M.P.S.); (F.M.A.M.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Fernanda M. A. Margaça
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, E.N. 10 ao km 139.7, 2695-066 Bobadela LRS, Portugal; (J.M.); (I.G.); (J.C.); (P.M.P.S.); (F.M.A.M.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
| | - Celestino Santos-Buelga
- Grupo de Investigación en Polifenoles (GIP-USAL), Facultad de Farmacia, Universidad de Salamanca, Campus Miguel de Unamuno s/n, 37007 Salamanca, Spain;
- Unidad de Excelencia Producción, Agrícola y Medioambiente (AGRIENVIRONMENT), Parque Científico, Universidad de Salamanca, 37185 Salamanca, Spain
| | - Lillian Barros
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (M.I.D.); (L.B.)
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Sandra Cabo Verde
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, E.N. 10 ao km 139.7, 2695-066 Bobadela LRS, Portugal; (J.M.); (I.G.); (J.C.); (P.M.P.S.); (F.M.A.M.)
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal
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El Kady WM, Ayoub IM, El Mehrate AK, Emad M, Tarek M, El Gdeily A, Mohamed ER, Medhat R, Mahmoud O, Gad AM, Danderawy AM, Breaka OL, Mosad NE, Gemeaha SM, Fathallah N. Valorization of Citrus peels: GC/MS-based metabolites profiling, multivariate analysis, and antiaging potential. Arch Pharm (Weinheim) 2024; 357:e2300742. [PMID: 38290054 DOI: 10.1002/ardp.202300742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/02/2024] [Accepted: 01/05/2024] [Indexed: 02/01/2024]
Abstract
Aging and agro-waste are major challenges. Natural ingredients are preferred in skincare. This study intended to isolate the essential oils (EO) from the leftover peels obtained from three commonly edible Citrus species fruit peels, namely Citrus paradisi (grapefruit), Citrus sinensis (sweet orange), and Citrus deliciosa (mandarin). Gas chromatography/mass spectrometry analysis identified volatile constituents in EO and headspace aroma. Multivariate analysis distinguished between the three species. The antiaging effects of Citrus EO were assessed in vitro and in silico, studying volatile interactions with target enzymes. C. sinensis peels had the highest oil yield, rich in monoterpenes. C. paradisi and C. deliciosa contained sesquiterpenes. Limonene dominated the hydrodistilled EO: 94.50% in C. paradisi, 96.80% in C. sinensis, and 80.66% in C. deliciosa. Unsupervised multivariate analysis of Citrus species revealed that d-limonene, γ-terpinene, and β-pinene are the key phytochemical markers contributing to their diverse chemical composition. C. paradisi exhibited the highest enzyme inhibitory activity, with IC50 values of 12.82, 27.58, and 18.16 µg/mL for tyrosinase, elastase, and collagenase, respectively. In silico studies showed that the volatiles can inhibit the tested antiaging enzymes. According to these findings, the investigated agro-waste might slow aging in skin care.
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Affiliation(s)
- Wafaa M El Kady
- Department of Pharmacognosy and Medicinal Plants, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Iriny M Ayoub
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | | | - Mohamed Emad
- Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Mohamed Tarek
- Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Ahmed El Gdeily
- Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | | | - Rana Medhat
- Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Omar Mahmoud
- Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Amira M Gad
- Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | | | - Ola L Breaka
- Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Nada E Mosad
- Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Safaa M Gemeaha
- Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Noha Fathallah
- Department of Pharmacognosy and Medicinal Plants, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
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Kourti M, Skaperda Z, Tekos F, Stathopoulos P, Koutra C, Skaltsounis AL, Kouretas D. The Bioactivity of a Hydroxytyrosol-Enriched Extract Originated after Direct Hydrolysis of Olive Leaves from Greek Cultivars. Molecules 2024; 29:299. [PMID: 38257212 PMCID: PMC10818913 DOI: 10.3390/molecules29020299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/29/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
Nowadays, olive leaf polyphenols have been at the center of scientific interest due to their beneficial effects on human health. The most abundant polyphenol in olive leaves is oleuropein. The biological properties of oleuropein are mainly due to the hydroxytyrosol moiety, a drastic catechol group, whose biological activity has been mentioned many times in the literature. Hence, in recent years, many nutritional supplements, food products, and cosmetics enriched in hydroxytyrosol have been developed and marketed, with unexpectedly positive results. However, the concentration levels of hydroxytyrosol in olive leaves are low, as it depends on several agricultural factors. In this study, a rapid and easy methodology for the production of hydroxytyrosol-enriched extracts from olive leaves was described. The proposed method is based on the direct acidic hydrolysis of olive leaves, where the extraction procedure and the hydrolysis of oleuropein are carried out in one step. Furthermore, we tested the in vitro bioactivity of this extract using cell-free and cell-based methods, evaluating its antioxidant and DNA-protective properties. Our results showed that the hydroxytyrosol-enriched extract produced after direct hydrolysis of olive leaves exerted significant in vitro antioxidant and geno-protective activity, and potentially these extracts could have various applications in the pharmaceutical, food, and cosmetic industries.
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Affiliation(s)
- Maria Kourti
- Laboratory of Animal Physiology, Department of Biochemistry-Biotechnology, School of Health Sciences, University of Thessaly, 41500 Larissa, Greece; (M.K.); (Z.S.); (F.T.)
| | - Zoi Skaperda
- Laboratory of Animal Physiology, Department of Biochemistry-Biotechnology, School of Health Sciences, University of Thessaly, 41500 Larissa, Greece; (M.K.); (Z.S.); (F.T.)
| | - Fotios Tekos
- Laboratory of Animal Physiology, Department of Biochemistry-Biotechnology, School of Health Sciences, University of Thessaly, 41500 Larissa, Greece; (M.K.); (Z.S.); (F.T.)
| | - Panagiotis Stathopoulos
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece; (P.S.); (C.K.); (A.L.S.)
| | - Christina Koutra
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece; (P.S.); (C.K.); (A.L.S.)
| | - Alexios Leandros Skaltsounis
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece; (P.S.); (C.K.); (A.L.S.)
| | - Demetrios Kouretas
- Laboratory of Animal Physiology, Department of Biochemistry-Biotechnology, School of Health Sciences, University of Thessaly, 41500 Larissa, Greece; (M.K.); (Z.S.); (F.T.)
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Mansour HMM, Zeitoun AA, Abd-Rabou HS, El Enshasy HA, Dailin DJ, Zeitoun MAA, El-Sohaimy SA. Antioxidant and Anti-Diabetic Properties of Olive ( Olea europaea) Leaf Extracts: In Vitro and In Vivo Evaluation. Antioxidants (Basel) 2023; 12:1275. [PMID: 37372005 DOI: 10.3390/antiox12061275] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
(1) Objective: The main objective of the current study was to evaluate in vitro and in vivo an antioxidant property of three genotypes of olive leaf extract (OLE) (picual, tofahi and shemlali), and furthermore to assess potential activity in the treatment and/or prevention of diabetes mellitus type II and related implications. (2) Methodology: Antioxidant activity was determined by using three different methods (DDPH assay, reducing power and nitric acid scavenging activity). In vitro α-glucosidase inhibitory activity and hemolytic protective activity were assessed for the OLE. Five groups of male rats were used in in vivo experiment for evaluating the antidiabetic potential of OLE. (3) Results: The genotypes of the extracts of the three olive leaves exhibited meaningful phenolic and flavonoids content with superiority for picual extract (114.79 ± 4.19 µg GAE/g and 58.69 ± 1.03 µg CE/g, respectively). All three genotypes of olive leaves demonstrated significant antioxidant activity when using DPPH, reducing power and nitric oxide scavenging activity with IC50 ranging from 55.82 ± 0.13 to 19.03 ± 0.13 μg/mL. OLE showed a significant α-glucosidase inhibition activity and dose-dependent protection from hemolysis. In vivo experimentation revealed that the administration of OLE alone and the combination of OLE+ metformin clearly restored the blood glucose and glycated hemoglobin, lipid parameters and liver enzymes to the normal level. The histological examination revealed that the OLE and its combination with metformin successfully repaired the liver, kidneys and pancreatic tissues to bring them close to the normal status and maintain their functionality. (4) Conclusion: Finally, it can be concluded that the OLE and its combination with metformin is a promising treatment for diabetes mellitus type 2 due to their antioxidant activity, which emphasizes the potential use of OLE alone or as an adjuvant agent in the treatment protocol of diabetes mellitus type II.
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Affiliation(s)
- Hanem M M Mansour
- Department of Food Technology, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, Alexandria 21934, Egypt
| | - Ashraf A Zeitoun
- Department of Food Science, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21934, Egypt
| | - Hagar S Abd-Rabou
- Department of Food Technology, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, Alexandria 21934, Egypt
| | - Hesham Ali El Enshasy
- Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia (UTM), Skudai 81310, Malaysia
- School of Chemical and Energy Engineering, Universiti Teknologi Malaysia (UTM), Skudai 81310, Malaysia
- Genertic Engineering and Biotechnology Research Institute, City of Scientific Research and Technology Applications, Alexandria 21934, Egypt
| | - Daniel Joe Dailin
- Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia (UTM), Skudai 81310, Malaysia
- School of Chemical and Energy Engineering, Universiti Teknologi Malaysia (UTM), Skudai 81310, Malaysia
| | - Mohamed A A Zeitoun
- Department of Food Science, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21934, Egypt
| | - Sobhy A El-Sohaimy
- Department of Food Technology, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, Alexandria 21934, Egypt
- Department of Technology and Organization of Public Catering, South Ural State University, 454080 Chelyabinsk, Russia
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