1
|
Swaidan A, Azakir B, Neugart S, Kattour N, Sokhn ES, Osaili TM, Darra NE. Evaluation of the Phenolic Composition and Biological Activities of Six Aqueous Date ( Phoenix dactylifera L.) Seed Extracts Originating from Different Countries: A Comparative Analysis. Foods 2023; 13:126. [PMID: 38201154 PMCID: PMC10778786 DOI: 10.3390/foods13010126] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 12/26/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
Date seeds, which are the main by-products of date fruit consumption, were shown to possess promising biological activities and health benefits with minimal human use. The present investigation analyzed and compared the phenolic content of six date seed varieties from four different origins (Khudari, Sakai, and Safawi from Saudi Arabia, Majdool from Jordan, Zahdi from Iraq, and Kabkab from Iran). The aqueous extracts were examined for possible antioxidant, antibacterial, and anti-tumor potential. Date seed oil was extracted, and fatty acid profiles were compared. The results revealed that date seeds are a rich source of polyphenols, which have been linked to biological activities. Furthermore, the phenolic content seemed highly dependent on the variety, where Kabkab had the highest TPC value (271.2 mg GAE/g DM) while Majdool had the lowest value (63.2 mg GAE/g DM). Antioxidant activities of all varieties were highly correlated with the total phenolic content. The antibacterial investigation demonstrated that the Sakai variety possessed the dominant activity, whereas Majdool showed no activity. The results further indicated the sensitivity of both Staphylococcus aureus and Bacillus cereus, with a stronger effect against B. cereus, while no effect was observed against Gram-negative strains (Salmonella Typhi and Escherichia coli). All varieties were able to decrease colon and lung cancer cell viability, especially Khudari and Sakai, with stronger effects against colon cancer cells. Analysis of date seed oil showed high oleic acid content, especially in Sakai. The findings suggest that date seeds are promising candidates for future pharmaceutical applications as nutraceuticals to help combat certain illnesses, as well as functional foods and natural additives that boost the nutritional value of food products, increase their shelf lives, and improve the overall health of consumers.
Collapse
Affiliation(s)
- Aseel Swaidan
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Beirut Arab University, Tarik El Jedidah, Riad El Solh, P.O. Box 115020, Beirut 1107 2809, Lebanon;
| | - Bilal Azakir
- Molecular and Translational Medicine Laboratory, Faculty of Medicine, Beirut Arab University, Beirut 1107 2809, Lebanon;
| | - Susanne Neugart
- Division of Quality and Sensory of Plant Products, Department of Crop Sciences, Georg-August-Universität Göttingen, 37073 Göttingen, Germany
| | - Naim Kattour
- Department of Biology, Faculty of Arts and Sciences, University of Balamand, P.O. Box 100, Tripoli 1100 2807, Lebanon
| | - Elie Salem Sokhn
- Department of Medical Laboratory Technology, Faculty of Health Sciences, Beirut Arab University, Beirut 1107 2809, Lebanon;
| | - Tareq M. Osaili
- Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
| | - Nada El Darra
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Beirut Arab University, Tarik El Jedidah, Riad El Solh, P.O. Box 115020, Beirut 1107 2809, Lebanon;
| |
Collapse
|
2
|
Engelhardt L, Pöhnl T, Alhussein M, John M, Neugart S. Changes in bioactive compounds and antioxidant activity of three Amaranthus L. genotypes from a model to household processing. Food Chem 2023; 429:136891. [PMID: 37481980 DOI: 10.1016/j.foodchem.2023.136891] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/03/2023] [Accepted: 07/13/2023] [Indexed: 07/25/2023]
Abstract
Amaranthus L. leaves are consumed as vegetables and are a rich source of secondary plant metabolites. The phenolic profiles of the three analyzed genotypes by LC-Q-TOF-MS/MS and HPLC-DAD were characterized by high amounts of hydroxycinnamic glucaric and -isocitric acids. 'Gartenfuchsschwanz' (A. hybridus L.) and 'Red Callaloo' (A. tricolor L.) had similar profiles. 'Gemüse-Amaranth' (A. tricolor L.) had a high amount of caffeoylglucaric acid 4, which was isolated, and afterward identified by NMR. Its antioxidant activity, measured by TEAC, DPPH, and TPC, was similar to 5-caffeoylquinic acid, common in many plant species. The antioxidant activity of Amaranthus L. can be explained rather by their different phenolic- and ascorbic acid concentrations than by their species. Household cooking reduces antioxidant activity due to oxidation processes while leaching into cooking water could be neglected. Amaranthus L. baked into a wheat-dough-matrix showed lower phenolic concentrations, presumably due to the formation of phenol-protein-bounds and thermal degradation.
Collapse
Affiliation(s)
- Layla Engelhardt
- Department of Crop Science, Division of Quality and Sensory of Plant Products, Georg-August-University Göttingen, Carl-Sprengel-Weg 1, 37075 Göttingen, Germany.
| | - Tobias Pöhnl
- Department of Crop Science, Division of Quality and Sensory of Plant Products, Georg-August-University Göttingen, Carl-Sprengel-Weg 1, 37075 Göttingen, Germany.
| | - Mohammad Alhussein
- Agricultural Entomology, Department of Crop Sciences, Georg-August-University Göttingen, Grisebachstraße 6, 37077 Göttingen, Germany.
| | - Michael John
- Institute of Organic and Biomolecular Chemistry, Georg-August-University Göttingen, Tammannstraße 2, 37077 Göttingen, Germany.
| | - Susanne Neugart
- Department of Crop Science, Division of Quality and Sensory of Plant Products, Georg-August-University Göttingen, Carl-Sprengel-Weg 1, 37075 Göttingen, Germany.
| |
Collapse
|
3
|
Skalska-Kamińska A, Wójciak W, Żuk M, Paduch R, Wójciak M. Protective Effect of Urtica dioica Extract against Oxidative Stress in Human Skin Fibroblasts. Life (Basel) 2023; 13:2182. [PMID: 38004322 PMCID: PMC10672499 DOI: 10.3390/life13112182] [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: 10/02/2023] [Revised: 10/23/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Urtica dioica is a species with well-established significance in folk medicine in many countries. It was utilized to support the treatment of arthritis, allergies, and urinary tract disorders; however, the substantial presence of antioxidants suggests that nettle extract could also have a positive impact on the skin. The objective of this study was to assess the impact of nettle extract on human skin fibroblasts subjected to oxidative stress. Various solvents were tested to prepare an extract rich in polyphenolic compounds with high antioxidant potential. The chemical composition was determined using ultra-high-performance liquid chromatography with mass spectrometry (UPLC-DAD-MS). H2O2 treatment was used to induce oxidative stress and cell viability, and the metabolism was evaluated through NR and MTT assays. Our study demonstrated that extraction with 80% ethanol, followed by the drying and re-dissolving of the extract in pure water, was more efficient than direct extraction with water. This yielded an extract rich in polyphenolic compounds, with chlorogenic acid and caffeoylmalic acid as the predominant compounds, averaging 64.9 and 114.4 µg/mL, respectively. The extract exhibited antioxidant properties in the DPPH and ABTS assays. Furthermore, it did not exhibit cytotoxicity and did not negatively affect cell metabolism. In addition, it effectively reduced ROS in the H2O2-stimulated cells, and at the highest concentration tested, the ROS levels returned to those of the untreated control. The extract also protected against H2O2-induced cytotoxicity. The cell viability was maintained at the level of the untreated control when the cells were pretreated with the extract before H2O2 exposure. These findings indicate that U. dioica extract is a valuable and safe additive in skincare products.
Collapse
Affiliation(s)
- Agnieszka Skalska-Kamińska
- Department of Analytical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; (A.S.-K.); (W.W.); (M.Ż.)
| | - Weronika Wójciak
- Department of Analytical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; (A.S.-K.); (W.W.); (M.Ż.)
| | - Magdalena Żuk
- Department of Analytical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; (A.S.-K.); (W.W.); (M.Ż.)
| | - Roman Paduch
- Department of Virology and Immunology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, 19 Akademicka Street, 20-033 Lublin, Poland;
- Department of General and Pediatric Ophthalmology, Medical University of Lublin, Chmielna 1, 20-079 Lublin, Poland
| | - Magdalena Wójciak
- Department of Analytical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; (A.S.-K.); (W.W.); (M.Ż.)
| |
Collapse
|
4
|
Semwal P, Rauf A, Olatunde A, Singh P, Zaky MY, Islam MM, Khalil AA, Aljohani ASM, Al Abdulmonem W, Ribaudo G. The medicinal chemistry of Urtica dioica L.: from preliminary evidence to clinical studies supporting its neuroprotective activity. Nat Prod Bioprospect 2023; 13:16. [PMID: 37171512 PMCID: PMC10176313 DOI: 10.1007/s13659-023-00380-5] [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: 04/18/2023] [Accepted: 05/04/2023] [Indexed: 05/13/2023]
Abstract
Urtica dioica is a perennial herb from the family of Urticaceae that is commonly known as stinging nettle. This plant is widespread in Europe, Africa, America, and a part of Asia, as it adapts to different environments and climatic conditions. The leaves, stalk, and bark of U. dioica found applications in the field of nutrition, cosmetics, textile, pest control and pharmacology. In this connection, bioactive chemical constituents such as flavonoids, phenolic acids, amino acids, carotenoids, and fatty acids have been isolated from the plant. With this review, we aim at providing an updated and comprehensive overview of the contributions in literature reporting computational, in vitro, pre-clinical and clinical data supporting the therapeutic applications of U. dioica. Experimental evidence shows that U. dioica constituents and extracts can provide neuroprotective effects by acting through a combination of different molecular mechanisms, that are discussed in the review. These findings could lay the basis for the identification and design of more effective tools against neurodegenerative diseases.
Collapse
Affiliation(s)
- Prabhakar Semwal
- Department of Biotechnology, Graphic Era Deemed to be University, 566/6 Bell Road, Clement Town, Dehra Dun, India.
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Swabi, Pakistan.
| | - Ahmed Olatunde
- Department of Medical Biochemistry, Abubakar Tafawa Balewa University, Bauchi, Nigeria
| | - Pooja Singh
- Department of Biotechnology, Graphic Era Deemed to be University, 566/6 Bell Road, Clement Town, Dehra Dun, India
| | - Mohamed Y Zaky
- Molecular Physiology Division, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
- Oncology Division, Department of Biomedical and Clinical Science, Faculty of Medicine, Linköping University, Linköping, Sweden
| | - Md Mozahidul Islam
- Department of Environmental Management, SESM, Independent University, Bangladesh, Bashundhara R/A, Dhaka, Bangladesh
| | - Anees Ahmed Khalil
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Lahore, Pakistan
| | - Abdullah S M Aljohani
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia
| | - Waleed Al Abdulmonem
- Department of Pathology, College of Medicine, Qassim University, Buraydah, Saudi Arabia
| | - Giovanni Ribaudo
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy.
| |
Collapse
|
5
|
Jaiswal V, Lee HJ. Antioxidant Activity of Urtica dioica: An Important Property Contributing to Multiple Biological Activities. Antioxidants (Basel) 2022; 11. [PMID: 36552702 DOI: 10.3390/antiox11122494] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/14/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022] Open
Abstract
Urtica dioica (UD) is a multi-functional plant known to be used as both food and medicine from ancient times. The plant has the potential to be used as a fertilizer and for biological pest control. It is also used in textile and related industries for its quality fibers. In the recent past, the plant has received great attention for its numerous important biological activities and food applications. The antioxidant activity of UD is the crucial factor supporting its important biological activities, such as anticancer, antidiabetic and anti-inflammatory properties. The antioxidant activity of UD is also found to be protective in different organs, including the brain, liver, lungs, kidney, ovary, and uterus, and may also be protective against diseases associated with these organs. Few clinical studies have endorsed the antioxidant potential of UD in patients. The current work is an attempt to comprehensively compile and discuss the antioxidant activity of UD from in vitro, in vivo and human studies. The insights of the current study would be helpful in getting a panoramic view of the antioxidant potential of UD, and provide direction for optimizing and developing it for therapeutic applications against important diseases and conditions in the near future.
Collapse
|