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Elhrech H, Aguerd O, El Kourchi C, Gallo M, Naviglio D, Chamkhi I, Bouyahya A. Comprehensive Review of Olea europaea: A Holistic Exploration into Its Botanical Marvels, Phytochemical Riches, Therapeutic Potentials, and Safety Profile. Biomolecules 2024; 14:722. [PMID: 38927125 PMCID: PMC11201932 DOI: 10.3390/biom14060722] [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: 05/16/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Human health is now inextricably linked to lifestyle choices, which can either protect or predispose people to serious illnesses. The Mediterranean diet, characterized by the consumption of various medicinal plants and their byproducts, plays a significant role in protecting against ailments such as oxidative stress, cancer, and diabetes. To uncover the secrets of this natural treasure, this review seeks to consolidate diverse data concerning the pharmacology, toxicology, phytochemistry, and botany of Olea europaea L. (O. europaea). Its aim is to explore the potential therapeutic applications and propose avenues for future research. Through web literature searches (using Google Scholar, PubMed, Web of Science, and Scopus), all information currently available on O. europaea was acquired. Worldwide, ethnomedical usage of O. europaea has been reported, indicating its effectiveness in treating a range of illnesses. Phytochemical studies have identified a range of compounds, including flavanones, iridoids, secoiridoids, flavonoids, triterpenes, biophenols, benzoic acid derivatives, among others. These components exhibit diverse pharmacological activities both in vitro and in vivo, such as antidiabetic, antibacterial, antifungal, antioxidant, anticancer, and wound-healing properties. O. europaea serves as a valuable source of conventional medicine for treating various conditions. The findings from pharmacological and phytochemical investigations presented in this review enhance our understanding of its therapeutic potential and support its potential future use in modern medicine.
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Affiliation(s)
- Hamza Elhrech
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10106, Morocco; (H.E.); (O.A.)
| | - Oumayma Aguerd
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10106, Morocco; (H.E.); (O.A.)
| | - Chaimae El Kourchi
- Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10106, Morocco;
| | - Monica Gallo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, Via Pansini 5, 80131 Naples, Italy
| | - Daniele Naviglio
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, 4, 80126 Naples, Italy;
| | - Imane Chamkhi
- Geo-Biodiversity and Natural Patrimony Laboratory (GeoBio), Geophysics, Natural Patrimony, Research Center (GEOPAC), Scientific Institute, Mohammed V University in Rabat, Rabat 10106, Morocco;
| | - Abdelhakim Bouyahya
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat 10106, Morocco; (H.E.); (O.A.)
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El-Sayed SM, El-Sayed HS, Hashim AF, Youssef AM. Valorization of edible films based on chitosan/hydroxyethyl cellulose/olive leaf extract and TiO 2-NPs for preserving sour cream. Int J Biol Macromol 2024; 268:131727. [PMID: 38649073 DOI: 10.1016/j.ijbiomac.2024.131727] [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: 11/22/2023] [Revised: 02/02/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
Biodegradable edible films for sour cream packaging were developed based on chitosan (CS), hydroxyethyl cellulose (HEC), Olive leaf extract (OE), and titanium dioxide nanoparticles (TiO2-NPs). The prepared CS/HEC/TiO2-OE bionanocomposite films were evaluated for their antimicrobial and antioxidant activities as well as using FT-IR, mechanical, permeability, and contact angle. The effect of developed films on the lipid oxidation, microbiological load, and chemical properties of sour cream was investigated. The fabricated films had an antimicrobial impact against all tested strains. The film containing 8 % OE showed effective protection against fat oxidation, with a peroxide value of 3.21 meq O2/kg, a para-anisidine value 5.40, and free fatty acids of 0.82 mg KOH/kg. The films with OE 4 % and 8 % have a good effect on the microbiological load of sour cream for 90 days. These films did not influence the chemical composition of sour cream and therefore can be used in this sort of dairy product.
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Affiliation(s)
- Samah M El-Sayed
- Dairy Science Department, National Research Centre, 33 El Bohouth St., Dokki, Giza 12622, Egypt.
| | - Hoda S El-Sayed
- Dairy Science Department, National Research Centre, 33 El Bohouth St., Dokki, Giza 12622, Egypt
| | - Ayat F Hashim
- Fats and Oils Department, National Research Centre, 33 El Bohouth St., Dokki, Giza, 12622, Egypt
| | - Ahmed M Youssef
- Packaging Materials Department, National Research Centre, 33 El Bohouth St., Dokki, Giza 12622, Egypt
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Nazar A, Adnan M, Shah SM, Bari A, Ullah R, Tariq A, Ahmad N. Ethnobotanical assessment of antidiabetic medicinal plants in District Karak, Pakistan. BMC Complement Med Ther 2024; 24:173. [PMID: 38658923 PMCID: PMC11040872 DOI: 10.1186/s12906-024-04462-w] [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: 11/10/2023] [Accepted: 03/28/2024] [Indexed: 04/26/2024] Open
Abstract
BACKGROUND Diabetes is a leading health disorder and is responsible for high mortality rates across the globe. Multiple treatment protocols are being applied to overcome this morbidity and mortality including plant-based traditional medicines. This study was designed to investigate the ethnomedicinal status of plant species used to treat diabetes in District Karak, Pakistan. MATERIALS AND METHODS A semi-structured survey was created to collect data about traditionally used medicinal plants for diabetes and other ailments. The convenience sampling method was applied for the selection of informants. The collected data was evaluated through quantitative tools like frequency of citation (FC), relative frequency of citation (RFC), informant consensus factor (FIC), fidelity level (FL), and use value (UV). RESULTS A total of 346 local informants were selected for this research. Out of them, 135 participants were men and 211 participants were women. Overall 38 plant species belonging to 29 plant families were used to treat diabetes. The most dominant plant family was Oleaceae having 11 species. Powder form (19%) was the most recommended mode of preparation for plant-based ethnomedicines. Leaves (68%) were the most frequently used parts followed by fruit (47%). The highest RFC was recorded for Apteranthes tuberculata (0.147). The maximum FL was reported for Apteranthes tuberculata (94.4) and Zygophyllum indicum (94.11) for diabetes, skin, and wounds. Similarly, the highest UV of (1) each was found for Brassica rapa, Melia azedarach, and Calotropis procera. Based on documented data, the reported ailments were grouped into 7 categories. The ICF values range between 0.89 (diabetes) to 0.33 (Cardiovascular disorders). CONCLUSION The study includes a variety of antidiabetic medicinal plants, which are used by the locals in various herbal preparations. The species Apteranthes tuberculata has been reported to be the most frequently used medicinal plant against diabetes. Therefore, it is recommended that such plants be further investigated in-vitro and in-vivo to determine their anti-diabetic effects.
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Affiliation(s)
- Amina Nazar
- Department of Botany, Kohat University of Science and Technology, Kohat, 26000, Pakistan
| | - Muhammad Adnan
- Department of Botany, Kohat University of Science and Technology, Kohat, 26000, Pakistan.
| | - Syed Majid Shah
- Department of Pharmacy, Kohat University of Science and Technology, Kohat, 26000, Pakistan
| | - Ahmed Bari
- Department of Pharmaceutical Chemistry, College of Pharmacy King Saud University, Riyadh, Saudi Arabia
| | - Riaz Ullah
- Department of Pharmacognosy, College of Pharmacy King Saud University, Riyadh, Saudi Arabia
| | - Akash Tariq
- Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China
| | - Nisar Ahmad
- Department of Botany, Kohat University of Science and Technology, Kohat, 26000, Pakistan
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Ronca CL, Marques SS, Ritieni A, Giménez-Martínez R, Barreiros L, Segundo MA. Olive Oil Waste as a Source of Functional Food Ingredients: Assessing Polyphenolic Content and Antioxidant Activity in Olive Leaves. Foods 2024; 13:189. [PMID: 38254490 PMCID: PMC10814828 DOI: 10.3390/foods13020189] [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: 12/10/2023] [Revised: 12/31/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
Around two million tons of olive oil are produced in Europe annually, with Portugal being among the top five European olive oil-producing countries. Olive oil production results in a substantial amount of waste in the form of olive leaves. These discarded olive leaves contain valuable phenolic compounds with antioxidant, anti-inflammatory, hypoglycaemic, neuroprotective, and antiproliferative properties. Due to their richness in polyphenols with health-promoting properties, olive leaves can be considered a potential functional food ingredient. Thus, sustainable practices for reusing olive leaf waste are in demand. In this study, the polyphenolic content in olive leaves from different Portuguese locations was determined using HPLC-UV-Vis after defining the best fit-for-purpose liquid extraction strategy. The differences in the in vitro antioxidant activity in these samples were determined by several methodologies based on radical scavenging (against 2,2'-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS), 2,2-diphenyl-2-picrylhydrazyl (DPPH), and peroxyl radical (ORAC)) and on reducing properties (cupric-reducing antioxidant capacity (CUPRAC), and Folin-Ciocalteu assay (FC)), to unveil the relationship between the profile and quantity of polyphenols with antioxidant mechanisms and their capacity. At last, the stability of extracted compounds upon lyophilization and exposition to surrogate biological fluids was assessed, envisioning the future incorporation of olive leaves extracted compounds in food products.
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Affiliation(s)
- Carolina L. Ronca
- LAQV, REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal; (C.L.R.); (S.S.M.); (L.B.)
- Department of Pharmacy, Faculty of Pharmacy, University of Naples “Federico II”, 80138 Naples, Italy
- Department of Nutrition and Bromatology, School of Pharmacy, University of Granada, 18012 Granada, Spain;
| | - Sara S. Marques
- LAQV, REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal; (C.L.R.); (S.S.M.); (L.B.)
| | - Alberto Ritieni
- Department of Pharmacy, Faculty of Pharmacy, University of Naples “Federico II”, 80138 Naples, Italy
| | - Rafael Giménez-Martínez
- Department of Nutrition and Bromatology, School of Pharmacy, University of Granada, 18012 Granada, Spain;
| | - Luisa Barreiros
- LAQV, REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal; (C.L.R.); (S.S.M.); (L.B.)
- School of Health, Polytechnic Institute of Porto, 4200-072 Porto, Portugal
| | - Marcela A. Segundo
- LAQV, REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4099-002 Porto, Portugal; (C.L.R.); (S.S.M.); (L.B.)
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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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Luca T, Malfa GA, Siracusa L, La Mantia A, Bianchi S, Napoli E, Puleo S, Sergi A, Acquaviva R, Castorina S. Redox State Modulatory Activity and Cytotoxicity of Olea europaea L. (Oleaceae) Leaves Extract Enriched in Polyphenols Using Macroporous Resin. Antioxidants (Basel) 2024; 13:73. [PMID: 38247497 PMCID: PMC10812475 DOI: 10.3390/antiox13010073] [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: 12/06/2023] [Revised: 12/30/2023] [Accepted: 01/01/2024] [Indexed: 01/23/2024] Open
Abstract
The food products derived from Olea europaea are a fundamental part of the Mediterranean diet, and their health-promoting effects are well known. In this study, we analyzed the phytochemical characteristics, the redox state modulatory activity, and the cytotoxic effect of an olive leaf aqueous extract enriched by macroporous resin on different tumor and normal cell lines (LNCaP, PC3, HFF-1). HPLC-DAD analysis, the Folin-Ciocalteu and aluminum chloride methods confirmed the qualitatively and quantitatively high content of phenolic compounds (130.02 ± 2.3 mg GAE/g extract), and a DPPH assay (IC50 = 100.00 ± 1.8 μg/mL), the related antioxidant activity. The biological investigation showed a significant cytotoxic effect, highlighted by an MTT test and the evident cellular morphological changes, on two prostate cancer cell lines. Remarkably, the extract was practically non-toxic on HFF-1 at the concentrations (100, 150, 300 µg/mL) and exposure times tested. Hence, the results are selective for tumor cells. The underlying cytotoxicity was associated with the decrease in ROS production (55% PC3, 42% LNCaP) and the increase in RSH levels (>50% PC3) and an LDH release assay (50% PC3, 40% LNCaP, established necrosis as the main cell death mechanism.
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Affiliation(s)
- Tonia Luca
- Department of Medical, Surgical Sciences and Advanced Technology, University of Catania, Via Santa Sofia, 95123 Catania, Italy; (T.L.); (S.C.)
| | - Giuseppe Antonio Malfa
- Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (A.L.M.); (S.B.); (A.S.); (R.A.)
- Research Centre on Nutraceuticals and Health Products (CERNUT), University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Laura Siracusa
- Institute of Biomolecular Chemistry, Italian National Research Council ICB-CNR, Via Paolo Gaifami 18, 95126 Catania, Italy; (L.S.); (E.N.)
| | - Alfonsina La Mantia
- Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (A.L.M.); (S.B.); (A.S.); (R.A.)
| | - Simone Bianchi
- Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (A.L.M.); (S.B.); (A.S.); (R.A.)
- Research Centre on Nutraceuticals and Health Products (CERNUT), University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Edoardo Napoli
- Institute of Biomolecular Chemistry, Italian National Research Council ICB-CNR, Via Paolo Gaifami 18, 95126 Catania, Italy; (L.S.); (E.N.)
| | - Stefano Puleo
- Mediterranean Foundation “GB Morgagni”, 95125 Catania, Italy;
| | - Angelo Sergi
- Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (A.L.M.); (S.B.); (A.S.); (R.A.)
| | - Rosaria Acquaviva
- Department of Drug and Health Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy; (A.L.M.); (S.B.); (A.S.); (R.A.)
- Research Centre on Nutraceuticals and Health Products (CERNUT), University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Sergio Castorina
- Department of Medical, Surgical Sciences and Advanced Technology, University of Catania, Via Santa Sofia, 95123 Catania, Italy; (T.L.); (S.C.)
- Mediterranean Foundation “GB Morgagni”, 95125 Catania, Italy;
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Mansour HMM, Shehata MG, Abdo EM, Sharaf MM, Hafez ESE, Galal Darwish AM. Comparative analysis of silver-nanoparticles and whey-encapsulated particles from olive leaf water extracts: Characteristics and biological activity. PLoS One 2023; 18:e0296032. [PMID: 38109310 PMCID: PMC10727426 DOI: 10.1371/journal.pone.0296032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/04/2023] [Indexed: 12/20/2023] Open
Abstract
Nanotechnology applications have been employed to improve the stability of bioactive components and drug delivery. Natural-based extracts, especially olive leaf extracts, have been associated with the green economy not only as recycled agri-waste but also in the prevention and treatment of various non-communicable diseases (NCDs). The aim of this work was to provide a comparison between the characteristics, biological activity, and gene expression of water extract of olive leaves (OLE), green synthesized OLE silver nanoparticles (OL/Ag-NPs), and OLE whey protein capsules (OL/WPNs) of the two olive varieties, Tofahy and Shemlali. The particles were characterized by dynamic light scattering, scanning electron microscope (SEM), and Fourier transform infrared. The bioactive compounds of the preparations were evaluated for their antioxidant activity and anticancer effect on HCT-116 colorectal cells as well as for their regulatory effects on cytochrome C oxidase (Cox1) and tumor necrosis factor α (TNF-α) genes. (OL/Ag-NPs) were found to be smaller than (OL/WPNs) with sizes of (37.46±1.85 and 44.86±1.62 nm) and (227.20±2.43 and 553.02±3.60 nm) for Tofahy and Shemlali, respectively. SEM showed that Shemlali (OL/Ag-NPs) had the least aggregation due to their highest Ƹ-potential (-31.76 ± 0.87 mV). The preparations were relatively nontoxic to Vero cells (IC50 = 151.94-789.25 μg/mL), while they were cytotoxic to HCT-116 colorectal cells (IC50 = 77.54-320.64 μg/mL). Shemlali and Tofahy OLE and Tofahy OL/Ag-NPs had a higher selectivity index (2.97-7.08 μg/mL) than doxorubicin (2.36 μg/mL), indicating promising anticancer activity. Moreover, Shemlali preparations regulated the expression of Cox1 (up-regulation) and TNF-α (down-regulation) on HCT-116 cells, revealing their efficiency in suppressing the expression of genes that promote cancer cell proliferation. (OL/Ag-NPs) from Tofahy and Shemlali were found to be more stable, effective, and safe than (OL/WPNs). Consequently, OL/Ag-NPs, especially Tofahy, are the best and safest nanoscale particles that can be safely used in food and pharmaceutical applications.
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Affiliation(s)
- Hanem M. M. Mansour
- Food Technology Department, Arid Lands Cultivation Research Institute (ALCRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Mohamed G. Shehata
- Food Technology Department, Arid Lands Cultivation Research Institute (ALCRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
- Food Research Section, R&D Division, Abu Dhabi Agriculture and Food Safety Authority (ADAFSA), Abu Dhabi, United Arab Emirates
| | - Eman M. Abdo
- Food Science Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria, Egypt
| | - Mona Mohamad Sharaf
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - El-sayed E. Hafez
- Plant Protection and Bio-Molecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Amira M. Galal Darwish
- Food Technology Department, Arid Lands Cultivation Research Institute (ALCRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
- Food Industry Technology Program, Faculty of Industrial and Energy Technology, Borg Al Arab Technological University (BATU), Alexandria, Egypt
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