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Al-Rimawi F, Sbeih M, Amayreh M, Rahhal B, Mudalal S. Evaluation of the antibacterial and antifungal properties of oleuropein, olea Europea leaf extract, and thymus vulgaris oil. BMC Complement Med Ther 2024; 24:297. [PMID: 39123180 PMCID: PMC11316283 DOI: 10.1186/s12906-024-04596-x] [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: 02/27/2024] [Accepted: 07/18/2024] [Indexed: 08/12/2024] Open
Abstract
BACKGROUND Although synthetic preservatives and antioxidants may have high antimicrobial and antioxidant activity, they are usually associated with adverse effects on human health. Currently, there is a growing interest in natural antimicrobial and antioxidant agents. This study aimed to evaluate the antimicrobial activity of two medicinal plant extracts and one active compound. Olive leaf extracts (0.2, 0.3, and 0.4% w/v), oleuropein (0.2, 0.4, and 0.6% w/v), thyme oil (0.1%), and oleuropein in combination with thyme oil (0.4% w/v and 0.1% v/v) were used against three bacterial strains (Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus) and two fungal strains (Candida albicans and Aspergillus niger). RESULTS The use of oleuropein resulted in complete antimicrobial activity against Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli. In this context, a reduction of 7 logs was achieved during the storage period (4 weeks). Oleuropein showed no fungal activity at low concentrations (0.2%), but Aspergillus niger was reduced by 2.35 logs at higher concentrations (0.6% w/v). Similar antibacterial and antifungal properties were observed for the olive leaf extracts. Oleuropein at a concentration of 0.4 w/v and a mixture of oleuropein and thyme at concentrations of 0.4 and 0.1 (v/v) showed strong antimicrobial activity against the studied microorganisms. CONCLUSION Olive leaf extract, thyme oil, and oleuropein have strong antibacterial and weak antifungal properties. There was a good synergistic effect between oleuropein and thymol.
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Affiliation(s)
- Fuad Al-Rimawi
- Chemistry Department, Faculty of Science and Technology, Al-Quds University, P.O. Box 20002, Jerusalem, Palestine
| | - Mahmood Sbeih
- Chemistry Department, Faculty of Science and Technology, Al-Quds University, P.O. Box 20002, Jerusalem, Palestine
| | - Mousa Amayreh
- Chemistry Department, Faculty of Applied Sciences, Palestine Technical University-Kadoorie (PTUK), P.O. Box 7, Tulkarm, Palestine
| | - Belal Rahhal
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, An-Najah National University, P.O. Box 7, Nablus, Palestine
| | - Samer Mudalal
- Department of Nutrition and Food Technology, Faculty of Agriculture and Veterinary Medicine, An-Najah National University, P.O. Box 7, Nablus, Palestine.
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Nelson VK, Nuli MV, Ausali S, Gupta S, Sanga V, Mishra R, Jaini PK, Madhuri Kallam SD, Sudhan HH, Mayasa V, Abomughaid MM, Almutary AG, Pullaiah CP, Mitta R, Jha NK. Dietary anti-inflammatory and anti-bacterial medicinal plants and its compounds in bovine mastitis associated impact on human life. Microb Pathog 2024; 192:106687. [PMID: 38750773 DOI: 10.1016/j.micpath.2024.106687] [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: 02/15/2024] [Revised: 04/25/2024] [Accepted: 05/12/2024] [Indexed: 05/31/2024]
Abstract
Bovine mastitis (BM) is the most common bacterial mediated inflammatory disease in the dairy cattle that causes huge economic loss to the dairy industry due to decreased milk quality and quantity. Milk is the essential food in the human diet, and rich in crucial nutrients that helps in lowering the risk of diseases like hypertension, cardiovascular diseases and type 2 diabetes. The main causative agents of the disease include various gram negative, and positive bacteria, along with other risk factors such as udder shape, age, genetic, and environmental factors also contributes much for the disease. Currently, antibiotics, immunotherapy, probiotics, dry cow, and lactation therapy are commonly recommended for BM. However, these treatments can only decrease the rise of new cases but can't eliminate the causative agents, and they also exhibit several limitations. Hence, there is an urgent need of a potential source that can generate a typical and ideal treatment to overcome the limitations and eliminate the pathogens. Among the various sources, medicinal plants and its derived products always play a significant role in drug discovery against several diseases. In addition, they are also known for its low toxicity and minimum resistance features. Therefore, plants and its compounds that possess anti-inflammatory and anti-bacterial properties can serve better in bovine mastitis. In addition, the plants that are serving as a food source and possessing pharmacological properties can act even better in bovine mastitis. Hence, in this evidence-based study, we particularly review the dietary medicinal plants and derived products that are proven for anti-inflammatory and anti-bacterial effects. Moreover, the role of each dietary plant and its compounds along with possible role in the management of bovine mastitis are delineated. In this way, this article serves as a standalone source for the researchers working in this area to help in the management of BM.
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Affiliation(s)
- Vinod Kumar Nelson
- Center for global health research, saveetha medical college, saveetha institute of medical and technical sciences, India.
| | - Mohana Vamsi Nuli
- Raghavendra Institute of Pharmaceutical Education and Research, Anantapur, India
| | - Saijyothi Ausali
- College of Pharmacy, MNR higher education and research academy campus, MNR Nagar, Sangareddy, 502294, India
| | - Saurabh Gupta
- Department of Biotechnology, GLA University, Mathura, Uttar Pradesh, India
| | - Vaishnavi Sanga
- Raghavendra Institute of Pharmaceutical Education and Research, Anantapur, India
| | - Richa Mishra
- Department of Computer Engineering, Faculty of Engineering and Technology, Parul University, Vadodara, 391760, Gujrat, India
| | - Pavan Kumar Jaini
- Department of Pharmaceutics, Raffles University, Neemrana, Rajasthan, India
| | - Sudha Divya Madhuri Kallam
- Department of Pharmaceutical Sciences, Vignan's Foundation for Science, Technology & Research (Deemed to be University), Guntur, Vadlamudi, Andhra Pradesh, 522213, India
| | - Hari Hara Sudhan
- Raghavendra Institute of Pharmaceutical Education and Research, Anantapur, India
| | - Vinyas Mayasa
- GITAM School of Pharmacy, GITAM University Hyderabad Campus, Rudraram, India
| | - Mosleh Mohammad Abomughaid
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha, Bisha, 61922, Saudi Arabia
| | - Abdulmajeed G Almutary
- Department of Biomedical Sciences, College of Health Sciences, Abu Dhabi University, Abu Dhabi, P.O. Box, 59911, United Arab Emirates
| | - Chitikela P Pullaiah
- Department of Chemistry, Siddha Central Research Institute, Chennai, Tamil Nadu, 60016, India
| | - Raghavendra Mitta
- Department of Pharmaceutical Sciences, Vignan's Foundation for Science, Technology & Research (Deemed to be University), Vadlamudi, Guntur, 522213, Andhra Pradesh, India
| | - Niraj Kumar Jha
- Department of Biotechnology, Sharda School of Engineering & Technology (SSET), Sharda University, Greater Noida, India; School of Bioengineering & Biosciences, Lovely Professional University, Phagwara, 144411, India; Department of Biotechnology, School of Applied & Life Sciences (SALS), Uttaranchal University, Dehradun, 248007, India.
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Magyari-Pavel IZ, Moacă EA, Avram Ș, Diaconeasa Z, Haidu D, Ștefănuț MN, Rostas AM, Muntean D, Bora L, Badescu B, Iuhas C, Dehelean CA, Danciu C. Antioxidant Extracts from Greek and Spanish Olive Leaves: Antimicrobial, Anticancer and Antiangiogenic Effects. Antioxidants (Basel) 2024; 13:774. [PMID: 39061845 PMCID: PMC11273738 DOI: 10.3390/antiox13070774] [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: 05/21/2024] [Revised: 06/18/2024] [Accepted: 06/24/2024] [Indexed: 07/28/2024] Open
Abstract
Olea europaea L. is the most valuable species of the Olea type, and its products offer a wide range of therapeutical uses. The olive tree has been extensively studied for its nourishing qualities, and the "Mediterranean diet", which includes virgin olive oil as a key dietary component, is strongly associated with a reduced risk of cardiovascular disease and various malignancies. Olive leaves, a by-product in the olive harvesting process, are valued as a resource for developing novel phytomedicines. For this purpose, two ethanolic extracts obtained from Olivae folium from Spain (OFS) and Greece (OFG) were investigated. Our findings contribute to a wider characterization of olive leaves. Both extracts displayed important amounts of phenolic compounds and pentacyclic triterpenes, OFG having higher concentrations of both polyphenols, such as oleuropein and lutein, as well as triterpenes, such as oleanolic acid and maslinic acid. The antioxidant capacity is similar for the two extracts, albeit slightly higher for OFG, possibly due to metal polyphenol complexes with antioxidant activity. The extracts elicited an antimicrobial effect at higher doses, especially against Gram-positive bacteria, such as Streptococcus pyogenes. The extract with lower inorganic content and higher content of polyphenols and triterpenic acids induced a strong anti-radical capacity, a selective cytotoxic effect, as well as antimigratory potential on A375 melanoma cells and antiangiogenic potential on the CAM. No irritability and a good tolerability were noted after evaluating the extracts on the in vivo Hen's Egg Test-Chorioallantoic Membrane (HET-CAM). Therefore, the present data are suggestive for the possible use of the two types of olive leaf products as high-antioxidant extracts, potentially impacting the healthcare system through their use as antimicrobial agents and as anticancer and anti-invasion treatments for melanoma.
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Affiliation(s)
- Ioana Zinuca Magyari-Pavel
- Department of Pharmacognosy, “Victor Babeș” University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania; (I.Z.M.-P.); (L.B.); (C.D.)
| | - Elena-Alina Moacă
- Department of Toxicology, Drug Industry, Management and Legislation, Faculty of Pharmacy, “Victor Babeș” University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania; (E.-A.M.); (C.A.D.)
- Research Centre for Pharmaco-Toxicological Evaluation, “Victor Babeș” University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania
| | - Ștefana Avram
- Department of Pharmacognosy, “Victor Babeș” University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania; (I.Z.M.-P.); (L.B.); (C.D.)
| | - Zorița Diaconeasa
- Department of Food Science and Technology, Faculty of Food Science and Technology, University of Agricultural Science and Veterinary Medicine, Calea Manastur, 3-5, 400372 Cluj-Napoca, Romania;
| | - Daniela Haidu
- Romanian Academy “Coriolan Dragulescu” Institute of Chemistry, Bv. M. Viteazu, No. 24, 300223 Timisoara, Romania;
| | - Mariana Nela Ștefănuț
- Department of Chemical and Electrochemical Syntheses, Laboratory of Electrochemical and Chemical Technologies, National Institute of Research and Development for Electrochemistry and Condensed Matter, Dr. A. P. Podeanu 144, 300569 Timişoara, Romania;
| | - Arpad Mihai Rostas
- National Institute for Research and Development of Isotopic and Molecular Technologies-INCDTIM, 67-103 Donat, 400293 Cluj-Napoca, Romania;
| | - Delia Muntean
- Department of Microbiology, “Victor Babeș” University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timișoara, Romania;
| | - Larisa Bora
- Department of Pharmacognosy, “Victor Babeș” University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania; (I.Z.M.-P.); (L.B.); (C.D.)
| | - Bianca Badescu
- Doctoral School, “Victor Babeș” University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timișoara, Romania;
| | - Cristian Iuhas
- Department of Obstetrics and Gynecology, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Victor Babes Street No. 8, 400012 Cluj-Napoca, Romania;
| | - Cristina Adriana Dehelean
- Department of Toxicology, Drug Industry, Management and Legislation, Faculty of Pharmacy, “Victor Babeș” University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania; (E.-A.M.); (C.A.D.)
- Research Centre for Pharmaco-Toxicological Evaluation, “Victor Babeș” University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania
| | - Corina Danciu
- Department of Pharmacognosy, “Victor Babeș” University of Medicine and Pharmacy Timișoara, Eftimie Murgu Square, No. 2, 300041 Timisoara, Romania; (I.Z.M.-P.); (L.B.); (C.D.)
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Sailović P, Odžaković B, Bodroža D, Vulić J, Čanadanović-Brunet J, Zvezdanović J, Danilović B. Polyphenolic Composition and Antimicrobial, Antioxidant, Anti-Inflammatory, and Antihyperglycemic Activity of Different Extracts of Teucrium montanum from Ozren Mountain. Antibiotics (Basel) 2024; 13:358. [PMID: 38667034 PMCID: PMC11047695 DOI: 10.3390/antibiotics13040358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/04/2024] [Accepted: 04/12/2024] [Indexed: 04/29/2024] Open
Abstract
Teucrium montanum has widespread use in folk medicine on the Balkan peninsula. In order to scientifically justify this use, the composition and biological activity of aqueous, ethanol, and acetone extract were investigated in this study. Moreover, acetone and ethanol extracts were obtained from the plant material previously exhausted by water extraction. A total of 27 compounds were detected in extracts by UHPLC-DAD-MS/MS analysis, with all of them present in acetone and ethanol extracts. Consequentially, the acetone and ethanol extracts showed higher contents of total phenols of 23% and 18%, respectively, compared to the water extract. The results indicated high biological potential in the investigated extracts. Among all extracts, the aqueous extract showed slightly higher antimicrobial potential, especially against Gram-positive strains, probably due to the release of components soluble in water from the dry unexhausted plant material. On the other hand, the acetone and ethanol extracts had significantly higher antioxidative (by 20%), anti-inflammatory activity (up to 3 and 4 times higher, respectively), and α-glucosidase inhibitory potential (3 times higher) than the aqueous extract. The results of this investigation reveal the great potential of the use of T. montanum in various branches of food, cosmetics, and the pharmaceutical industry. An important part of this research is a confirmation that, once exhausted by water extraction, for example by hydrodistillation, T. montanum plant material can be reused for obtaining valuable products with a wide range of biological activities.
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Affiliation(s)
- Pero Sailović
- Faculty of Technology Banja Luka, University of Banja Luka, Bulevar vojvode Stepe Stepanovića 73, 78000 Banja Luka, Republic of Srpska, Bosnia and Herzegovina; (P.S.); (B.O.); (D.B.)
| | - Božana Odžaković
- Faculty of Technology Banja Luka, University of Banja Luka, Bulevar vojvode Stepe Stepanovića 73, 78000 Banja Luka, Republic of Srpska, Bosnia and Herzegovina; (P.S.); (B.O.); (D.B.)
| | - Darko Bodroža
- Faculty of Technology Banja Luka, University of Banja Luka, Bulevar vojvode Stepe Stepanovića 73, 78000 Banja Luka, Republic of Srpska, Bosnia and Herzegovina; (P.S.); (B.O.); (D.B.)
| | - Jelena Vulić
- Faculty of Technology Novi Sad, University of Novi Sad, Bulevar cara Lazara 1, 21102 Novi Sad, Serbia; (J.V.); (J.Č.-B.)
| | - Jasna Čanadanović-Brunet
- Faculty of Technology Novi Sad, University of Novi Sad, Bulevar cara Lazara 1, 21102 Novi Sad, Serbia; (J.V.); (J.Č.-B.)
| | - Jelena Zvezdanović
- Faculty of Technology Leskovac, University of Niš, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia;
| | - Bojana Danilović
- Faculty of Technology Leskovac, University of Niš, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia;
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Novoselić A, Gallina Tosci T, Klisović D, Tura M, Brkić Bubola K. Compositional Changes during Storage of Industrially Produced Olive Oils Co-Milled with Olive Leaves. Foods 2023; 13:73. [PMID: 38201101 PMCID: PMC10778488 DOI: 10.3390/foods13010073] [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: 12/01/2023] [Revised: 12/19/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
The possibility of enriching the oil produced from Leccino cultivar olive fruits with phenolic and volatile compounds by adding olive leaves (2.5%) during industrial-scale production were investigated. Furthermore, the influence of the addition of leaves on the oil quality, composition, and oxidative stability during storage for 6 and 12 months was studied. A slight negative impact on the oil quality after processing with leaves was determined. The addition of leaves had no influence on the total saturated, monounsaturated, and polyunsaturated fatty acids in oils, while it influenced increases in total phenolic compounds (+29.55%), total secoiridoids (+29.43%), chlorophylls (+47.59%), and the oil stability index (+18.70%), and their higher values were also determined in the stored oils. The addition of leaves increased C5 volatiles (+10.50%) but decreased C6 volatiles (-10.48%). The intensity of most of the positive sensory characteristics increased in fresh oils obtained with leaves, and the established improvements were also maintained in the stored oils. The extractability of olive paste was positively affected by the addition of olive leaves, which increased the oil yield (+27.17%). The obtained results significantly contribute to the knowledge about the possibilities of enriching olive oils with bioactive compounds.
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Affiliation(s)
- Anja Novoselić
- Institute of Agriculture and Tourism, Karla Huguesa 8, 52440 Poreč, Croatia; (A.N.); (K.B.B.)
| | - Tullia Gallina Tosci
- Department of Agricultural and Food Sciences, Alma Mater Studiorum—Università di Bologna, 40126 Bologna, Italy;
| | | | - Matilde Tura
- Department of Agricultural and Food Sciences, Alma Mater Studiorum—Università di Bologna, 40126 Bologna, Italy;
| | - Karolina Brkić Bubola
- Institute of Agriculture and Tourism, Karla Huguesa 8, 52440 Poreč, Croatia; (A.N.); (K.B.B.)
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Chatzikonstantinou AV, Giannakopoulou Α, Spyrou S, Simos YV, Kontogianni VG, Peschos D, Katapodis P, Polydera AC, Stamatis H. Production of hydroxytyrosol rich extract from Olea europaea leaf with enhanced biological activity using immobilized enzyme reactors. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:29624-29637. [PMID: 34676481 DOI: 10.1007/s11356-021-17081-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
As olive leaves constitute the main by-product of the olive oil industry with important environmental and economic impact, there is an increasing demand for its valorization. In the present work, we report the development and application of immobilized enzyme batch bioreactors for the chemo-enzymatic treatment of an aqueous Olea europaea leaf extract rich in oleuropein to produce an extract enriched in hydroxytyrosol and other oleuropein hydrolysis products. To this end, a robust biocatalyst was developed through the immobilization of β-glucosidase on chitosan-coated magnetic beads which exhibited high hydrolytic stability after 240 h of incubation at 37 °C. The biocatalyst was successfully used in both a rotating bed-reactor and a stir-tank reactor for the modification of the olive leaf extract leading to high conversion yields of oleuropein (exceeding 90%), while an up to 2.5 times enrichment in hydroxytyrosol was achieved. Over 20 phenolic compounds (from different classes of phytochemicals such as flavonoids, secoiridoids, and their derivatives) were identified, in the extract before and after its modification through various chromatographic and spectroscopic techniques. Finally, the biological activity of both extracts was evaluated. Compared to the non-modified extract, the modified one demonstrated 20% higher antioxidant activity, seven-fold higher antibacterial activity, and enhanced cytotoxicity against leiomyosarcoma cells.
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Affiliation(s)
- Alexandra V Chatzikonstantinou
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110, Ioannina, Greece.
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110, Ioannina, Greece.
| | - Αrchontoula Giannakopoulou
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110, Ioannina, Greece
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110, Ioannina, Greece
| | - Stamatia Spyrou
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110, Ioannina, Greece
| | - Yannis V Simos
- Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110, Ioannina, Greece
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110, Ioannina, Greece
| | - Vassiliki G Kontogianni
- Section of Organic Chemistry and Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina, Greece
| | - Dimitrios Peschos
- Department of Physiology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110, Ioannina, Greece
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110, Ioannina, Greece
| | - Petros Katapodis
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110, Ioannina, Greece
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110, Ioannina, Greece
| | - Angeliki C Polydera
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110, Ioannina, Greece
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110, Ioannina, Greece
| | - Haralambos Stamatis
- Biotechnology Laboratory, Department of Biological Applications and Technologies, University of Ioannina, 45110, Ioannina, Greece.
- Nanomedicine and Nanobiotechnology Research Group, University of Ioannina, 45110, Ioannina, Greece.
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Synergistic Effect of Polyphenol-Rich Complex of Plant and Green Propolis Extracts with Antibiotics against Respiratory Infections Causing Bacteria. Antibiotics (Basel) 2022; 11:antibiotics11020160. [PMID: 35203763 PMCID: PMC8868350 DOI: 10.3390/antibiotics11020160] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/15/2022] [Accepted: 01/20/2022] [Indexed: 12/21/2022] Open
Abstract
Bacterial infections are a prevalent complication after primary viral respiratory infections and are associated with high morbidity and mortality. Antibiotics are widely used against bacterial respiratory pathogens; however, the rise in antibiotic-resistant strains urges us to search for new antimicrobial compounds, including ones that act synergistically with antibiotics. In this study, the minimal inhibitory (MIC) and minimal bactericidal (MBC) concentrations of a polyphenol-rich complex of green propolis, Tabebuia avellanedae bark, and Olea europaea leaf extracts against Staphylococcus aureus, Haemophilus influenzae, and Klebsiella pneumoniae were determined, followed by an analysis of the synergistic effect with clarithromycin, azithromycin, and amoxiclav (875/125 mg amoxicillin/clavulanic acid). A combination of extracts showed activity against all three bacterial strains, with MIC values ranging from 0.78 to 12.5 mg/mL and MBC values from 1.56 to 12.5 mg/mL. The extracts showed synergistic activity with azithromycin and clarithromycin against S. aureus, with clarithromycin against K. pneumoniae, and with all three tested antibiotics against H. influenzae. Synergy with clarithromycin was additionally evaluated in a time-kill assay where the synergistic effects against S. aureus and K. pneumoniae were seen within the first 6 h of incubation. The results show the potential of polyphenol-rich extracts in enhancing the efficacy of antibiotic therapy and indicate their potential to be used in the management of respiratory infections.
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Masota NE, Vogg G, Ohlsen K, Holzgrabe U. Reproducibility challenges in the search for antibacterial compounds from nature. PLoS One 2021; 16:e0255437. [PMID: 34324599 PMCID: PMC8321225 DOI: 10.1371/journal.pone.0255437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/14/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Reproducibility of reported antibacterial activities of plant extracts has long remained questionable. Although plant-related factors should be well considered in serious pharmacognostic research, they are often not addressed in many research papers. Here we highlight the challenges in reproducing antibacterial activities of plant extracts. METHODS Plants with reported antibacterial activities of interest were obtained from a literature review. Antibacterial activities against Escherichia coli and Klebsiella pneumoniae were tested using extracts' solutions in 10% DMSO and acetone. Compositions of working solutions from both solvents were established using LC-MS analysis. Moreover, the availability of details likely to affect reproducibility was evaluated in articles which reported antibacterial activities of studied plants. RESULTS Inhibition of bacterial growth at MIC of 256-1024 μg/mL was observed in only 15.4% of identical plant species. These values were 4-16-fold higher than those reported earlier. Further, 18.2% of related plant species had MICs of 128-256 μg/mL. Besides, 29.2% and 95.8% of the extracts were soluble to sparingly soluble in 10% DMSO and acetone, respectively. Extracts' solutions in both solvents showed similar qualitative compositions, with differing quantities of corresponding phytochemicals. Details regarding seasons and growth state at collection were missing in 65% and 95% of evaluated articles, respectively. Likewise, solvents used to dissolve the extracts were lacking in 30% of the articles, whereas 40% of them used unidentified bacterial isolates. CONCLUSION Reproducibility of previously reported activities from plants' extracts is a multi-factorial aspect. Thus, collective approaches are necessary in addressing the highlighted challenges.
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Affiliation(s)
- Nelson E. Masota
- Institute of Pharmacy and Food Chemistry, University of Wuerzburg, Wuerzburg, Germany
- School of Pharmacy, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - Gerd Vogg
- Botanical Garden of The University of Wuerzburg, Wuerzburg, Germany
| | - Knut Ohlsen
- Institute for Molecular Infection Biology, University of Wuerzburg, Wuerzburg, Germany
| | - Ulrike Holzgrabe
- Institute of Pharmacy and Food Chemistry, University of Wuerzburg, Wuerzburg, Germany
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Espeso J, Isaza A, Lee JY, Sörensen PM, Jurado P, Avena-Bustillos RDJ, Olaizola M, Arboleya JC. Olive Leaf Waste Management. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2021. [DOI: 10.3389/fsufs.2021.660582] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Olive trees are the oldest known cultivated trees in the world and present-day cultivation is widespread, with an estimated magnitude of 9 million hectares worldwide. As the olive oil industry has continued to grow, so has the environmental impact of olive oil production, such as the energy and water consumption, gas emissions and waste generation. The largest contributor to waste generation are the olive leaves, an abundant and unavoidable byproduct of olive-oil production due to the necessity of tree-pruning. It is estimated that an annual 1.25 million tons of olive leaf waste are generated in Spain alone, around 50% of the total world production. The leaves are currently used for biomass production or animal feed. However, because of their polyphenolic composition, olive leaves have potential in numerous other applications. In this review we analyze the chemical composition of olive leaves, and discuss current processing methods of the olive leaf waste, including thermochemical, biochemical, drying, extraction and condensation methods. We also examine current applications of the treated olive leaves in sectors relating to cattle feed, fertilizers, novel materials, energy generation, and food and pharmaceutical products. The aim of this review is to provide a resource for producers, policy makers, innovators and industry in shaping environmentally sustainable decisions for how olive leaf waste can be utilized and optimized.
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Hemeg HA, Moussa IM, Ibrahim S, Dawoud TM, Alhaji JH, Mubarak AS, Kabli SA, Alsubki RA, Tawfik AM, Marouf SA. Antimicrobial effect of different herbal plant extracts against different microbial population. Saudi J Biol Sci 2020; 27:3221-3227. [PMID: 33304127 PMCID: PMC7714981 DOI: 10.1016/j.sjbs.2020.08.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/08/2020] [Accepted: 08/09/2020] [Indexed: 01/10/2023] Open
Abstract
This study evaluates the antimicrobial effects of ethanolic extract of five herbal plants; Guava (Psidium guajava), Sage (Salvia officinalis), Rhamnus (Ziziphusspina Christi), Mulberry (Morusalba L.), and Olive (Oleaeuropaea L) leaves against several microbial population representing Gram positive, Gram negative and Mollicutes; S. aureus, E. coli, Pasteurella multocida, B. cereus, Salmonella Enteritidis and M. gallisepticum using standard agar disc diffusion technique and minimal inhibitory concentration (MIC). Different extracts reveal variable results against the microorganism under study. All extracts have no antibacterial potency for Mycoplasma gallisepticum except Psidium guajava. The results of minimal inhibitory concentration (MIC) and Minimum bactericidal concentration (MBC) of the extracts against the six bacteria ranged from 625 to 5000 μg/ml. The used herbal extract could inhibit the selected microorganism under study with variable minimal inhibitory concentration (MIC) and minimum bactericidal concentration (MBC).
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Affiliation(s)
- Hassan A. Hemeg
- Department of Medical Technology/Microbiology, College of Applied Medical Science, Taibah University, Madinah, Saudi Arabia
| | - Ihab M. Moussa
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
- Department of Microbiology, Faculty of Veterinary Medicine, Cairo University, Giza 11221, Egypt
| | - Sherin Ibrahim
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza 11221, Egypt
| | - Turki M. Dawoud
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Jwaher H. Alhaji
- Department of Health Science, College of Applied Studies and Community Service, King Saud University, Riyadh, Saudi Arabia
| | - Ayman S. Mubarak
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Saleh A. Kabli
- Department of Biological Science, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Roua A. Alsubki
- Department of Clinical Laboratory Science, Chair of Medical and Molecular Genetics Research, College of Applied Medical Science, King Saud University, Saudi Arabia
| | - Azza M. Tawfik
- Department of Clinical Pathology, Faculty of Veterinary Medicine, Cairo University, Giza 11221, Egypt
| | - Sherif A. Marouf
- Department of Microbiology, Faculty of Veterinary Medicine, Cairo University, Giza 11221, Egypt
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Antibacterial, Antifungal, and Antidiabetic Effects of Leaf Extracts from Persea americana Mill. (Lauraceae). Biochem Res Int 2020. [DOI: 10.1155/2020/8884300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Fruits and leaves of Persia americana are used in traditional medical practices. This study was carried out to determine the antibacterial, antifungal, and antidiabetic effects of the leaf extracts from P. americana. The antibacterial activities of the leaf extracts were evaluated against Klebsiella pneumoniae and Staphylococcus epidermidis while antifungal activities were determined against Candida albicans and Candida tropicalis. The antidiabetic potential of the extracts was determined against mammalian α-glucosidase in vitro. The broth microdilution method was used to investigate the antibacterial and antifungal susceptibility of the microbial strains towards the leaf extracts. S. epidermidis was the most susceptible microbe out of the tested microorganisms. The acetone extract was the most potent extract against S. epidermidis with a minimum inhibitory concentration (MIC) of 50 μg/mL. At 100 μg/mL, the ethanol:water extract 18% of K. pneumoniae cells remained viable. Cell viability after exposure to the dichloromethane (DCM) and methanol extracts was 28% against C. albicans and 8% against C. tropicalis, respectively. The DCM:methanol and acetone extracts caused membrane damage in S. epidermidis exhibited by protein leakage. Only the acetone extract effected nucleic acid leakage. Screening of extracts’ potential to inhibit the activity of α-glucosidase was carried out spectrophotometrically following the production of p-nitrophenol from p-nitrophenol-glucopyranoside (substrate) at a wavelength of 405 nm. Out of all the tested extracts, the methanolic extract showed the best inhibitory activity on α-glucosidase enzyme in a time-dependent and dose-dependent manner.andvalues were found to be 1.4 mg/mL and 2.4 U/min, respectively, after incubation for 1 hour. It was concluded that the leaf extracts of P. americana contain phytochemicals with antibacterial, antifungal, and α-glucosidase inhibitory effects. Further studies are required for the identification of the active compounds in the leaf extracts responsible for these observed effects.
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Processing Wastewaters from Spanish-Style cv. Chalkidiki Green Olives: A Potential Source of Enterococcus Casseliflavus and Hydroxytyrosol. Microorganisms 2020; 8:microorganisms8091274. [PMID: 32825632 PMCID: PMC7564576 DOI: 10.3390/microorganisms8091274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 08/19/2020] [Accepted: 08/19/2020] [Indexed: 11/17/2022] Open
Abstract
The purpose of this study was to examine the isolation of indigenous lactic acid bacteria (LAB) with functional properties from Spanish-style cv. Chalkidiki green olive processing wastewaters (GOW). Predominant indigenous LAB could serve as bioaugmentation agents/starter culture for table olives production and protected designation of origin specification. Spontaneous fermentation of fresh GOW over different temperatures (15 °C to 50 °C) and pH values (3.5 to 11.5) for 30 d enabled the isolation/molecular identification of the lactic acid bacterium Enterococcus casseliflavus and the plant-associated bacterium Bacillus amyloliquefaciens subsp. plantarum. E. casseliflavus was found to reduce chemical oxygen demand by 72%. Its resistance to extreme pH values, salinity, and temperature was successfully modeled and the minimum inhibitory concentration of oleuropein against the bacterial growth was determined (0.9 g/L). Furthermore, hydroxytyrosol content was doubled (up to 553 mg/L) after GOW spontaneous fermentation under acidic conditions at 15 °C to 30 °C for 120 d, creating an additional source of input. These results highlight the significance and potential of E. casseliflavus in Spanish-style cv. Chalkidiki green olive processing.
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Comparison of Techniques and Solvents on the Antimicrobial and Antioxidant Potential of Extracts from Acacia dealbata and Olea europaea. Antibiotics (Basel) 2020; 9:antibiotics9020048. [PMID: 32012935 PMCID: PMC7168226 DOI: 10.3390/antibiotics9020048] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/22/2020] [Accepted: 01/24/2020] [Indexed: 11/17/2022] Open
Abstract
Ethnopharmacological use of plant natural extracts has been known since ancient times. The optimization of plant molecule extraction is fundamental in obtaining relevant extraction yields. The main purpose of this study was to understand the role of different extraction techniques (solid-liquid, ultrasound, Soxhlet, and microwave) and solvents (water, methanol, ethanol, acetone, dichloromethane, and hexane) on the antimicrobial and antioxidant activities of extracts from Olea europaea (olive) and Acacia dealbata (mimosa). Crude plant extracts were evaluated for their antimicrobial activity against Staphylococcus aureus and Escherichia coli by the disk diffusion method. The antioxidant capacity of the extracts was determined by ABTS (2,2-azinobis (3-ethyl-benzothiazoline-6-sulfonic acid)) and DPPH (2,2-diphenyl-1-picrylhydrazyl) methods. In terms of extraction yield, ultrasound extraction and the solvents methanol, acetone (O. europaea) or water (A. dealbata) were found to be the best options. However, ethanol and acetone proved to be the best solvents to extract compounds with antimicrobial activity and antioxidant capacity, respectively (regardless of the extraction method employed). Soxhlet and microwave were the best techniques to extract compounds with antimicrobial activity, whereas any of the tested techniques showed the ability to extract compounds with antioxidant capacity. In most of the cases, both plant extracts (mimosa and olive) were more efficient against S. aureus than E. coli. In the present study, both mimosa and olive leaf crude extracts proved to have antimicrobial and antioxidant activities, increasing the demand of these natural products as a source of compounds with health benefits.
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Khozeimeh F, Golestannejad Z, Abtahi R, Zarei Z, Sadeghalbanaei L, Sadeghian R. Inhibitory effects of ethanolic, methanolic, and hydroalcoholic extracts of olive (Olea europaea) leaf on growth, acid production, and adhesion of Streptococcus mutans. Dent Res J (Isfahan) 2020. [DOI: 10.4103/1735-3327.284730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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15
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Phytochemical composition, antioxidant and antimicrobial activities of leaves of Olea europaea wild variety. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2019. [DOI: 10.1007/s11694-019-00310-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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Supercritical impregnation of olive leaf extract to obtain bioactive films effective in cherry tomato preservation. Food Packag Shelf Life 2019. [DOI: 10.1016/j.fpsl.2019.100338] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Abidar S, Yildiz O, Degirmenci A, Amakran A, El Maadoudi M, Nhiri M. Glucose-mediated protein glycation: Contribution of methanolic extract of Ceratonia siliqua L. in protection and in vitro potential inhibition of acetylcholinesterase. J Food Biochem 2019; 43:e13009. [PMID: 31393019 DOI: 10.1111/jfbc.13009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/02/2019] [Accepted: 07/12/2019] [Indexed: 01/11/2023]
Abstract
Chronic hyperglycemia presents the major etiology of diabetes mellitus and related complications mainly Alzheimer's disease, via the protein glycation and toxic products generated. In the current study, we investigated the eventual protective effect of the methanolic extract of Ceratonia siliqua L. (CsME) against glucose-mediated glycation in serum bovine albumin. The multi-stage glycation markers, namely fructosamines and advanced glycation end products (AGEs) levels were monitored along with measurement of thiol groups; moreover, the in vitro acetylcholinesterase (AChE) inhibition potential was carried out. HPLC was also assessed. Rutin was the main phenolic compound found in CsME. CsME showed a good capacity to inhibit AGEs, fructosamines and protected thiol groups against glycation. CsME exhibited a great AChE inhibition activity. In the present study, CsME prevented glucose-induced protein glycation, it also exhibited a good inhibition of AChE, suggesting its DM complications such as memory troubles related to AD. PRACTICAL APPLICATIONS: Neurodegenerative disorders ranging from memory troubles to Alzheimer's disease present the most diabetes mellitus complications and mainly attributed to protein glycation process. Currently, there is a strong trend to search for efficient natural sources of glycation and acetylcholinesterase inhibitors to replace the synthetic ones, whose secondary effects were shown. The present article tries to justify scientifically the wide use of Ceratonia siliqua L. in Moroccan folk medicine, demonstrating that the methanolic extract of leaves from this species presents a promising source of new natural compounds inhibiting acetylcholinesterase and acting in vitro against glycation generated compounds. Furthermore, for the first time, Rutin was the main phenolic compound found in this extract, these encouraging results should be coupled with further studies to integrate it in pharmaceutical formulations. As such, this paper should be of interest to a broad readership, including those interested in Biochemistry, Phytochemistry, pharmacology, and neurosciences.
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Affiliation(s)
- Sara Abidar
- Laboratoire de Biochimie et Génétique Moléculaire, Faculté des Sciences et Techniques, Université Abdelmalek Essaâdi, Tanger Principal, Morocco
| | - Oktay Yildiz
- Maçka VHS, Department of Food Processing, Karadeniz Technical University, Trabzon, Turkey
| | - Atiye Degirmenci
- Maçka VHS, Department of Food Processing, Karadeniz Technical University, Trabzon, Turkey
| | - Amina Amakran
- Laboratoire de Biochimie et Génétique Moléculaire, Faculté des Sciences et Techniques, Université Abdelmalek Essaâdi, Tanger Principal, Morocco
| | - Mohammed El Maadoudi
- Laboratoire Régional d'Analyses et de Recherches de l'ONSSA (office national de sécurité sanitaire des produits alimentaires), Tanger, Maroc
| | - Mohamed Nhiri
- Laboratoire de Biochimie et Génétique Moléculaire, Faculté des Sciences et Techniques, Université Abdelmalek Essaâdi, Tanger Principal, Morocco
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18
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Testa B, Lombardi SJ, Macciola E, Succi M, Tremonte P, Iorizzo M. Efficacy of olive leaf extract ( Olea europaea L. cv Gentile di Larino) in marinated anchovies ( Engraulis encrasicolus, L.) process. Heliyon 2019; 5:e01727. [PMID: 31193311 PMCID: PMC6526228 DOI: 10.1016/j.heliyon.2019.e01727] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 04/11/2019] [Accepted: 05/10/2019] [Indexed: 01/31/2023] Open
Abstract
In this study, the antimicrobial activity and the preservative properties of olive leaf extract (OLE) Olea europaea L. "Gentile di Larino" cultivar, were evaluated. The antibacterial activity was performed in vitro against spoilage bacterial strains: Pseudomonas fluorescens (ATCC 13525), Pseudomonas fragi (ATCC 4973), Pseudomonas putida (ATCC 17514), Brochotrix thermosphacta (ATCC 11509), Clostridium sporogenes (ATCC 11437), and Listeria innocua (ATCC 33090). About the preservative properties of OLE, they were evaluated in the marinating process of anchovy fillets. During the process have been determined the change of sensory characteristics and monitored these chemical parameters: pH, aw, salt content (% NaCl), thiobarbituric acid index (mgMA/Kg), total volatile basic nitrogen (mg/100g), and trimethylamine nitrogen (mg/100g). Moreover, were determined the spoilage bacteria on raw material, after 7 days and at the end of marination process, 22 days. The OLE exhibited an inhibitory effect against the bacteria tested. In marinated anchovy fillets, showed that the extract improves their shelf life without modifying the organoleptic characteristics of the product; this suggests that it could be considered in the food industry as a natural antioxidant and antimicrobial food additive.
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Affiliation(s)
| | | | | | | | | | - Massimo Iorizzo
- Department of Agriculture, Environmental and Food Sciences, University of Molise, Campobasso, Italy
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Olive Leaves Extract from Algerian Oleaster ( Olea europaea var. sylvestris) on Microbiological Safety and Shelf-life Stability of Raw Halal Minced Beef during Display. Foods 2018; 8:foods8010010. [PMID: 30587798 PMCID: PMC6352275 DOI: 10.3390/foods8010010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/18/2018] [Accepted: 12/21/2018] [Indexed: 11/17/2022] Open
Abstract
Oleaster (wild olive tree) by-products represent a renewable and low-cost source of biopolyphenols. Leaf extracts (sylv.OLE) of Algerian oleaster, locally called a'hachad (Olea europaea subsp. europaea var. sylvestris), were applied at 1 and 5% (v/w) to raw Halal minced beef (HMB) in order to test its safety and shelf-life prolongation during retail/display. The total phenolic compound content in the extract was 198.7 ± 3.6 mg gallic acid equivalent. Ten compounds were identified in the sylv.OLE by High Performance Liquid Chromatography/Diode Array Detector (HPLC/DAD), of which oleuropein was the most abundant (43.25%). Samples treated with 5% sylv.OLE had significantly higher antimicrobial and antioxidant effects than those treated with 1% extract (p < 0.05). The addition of sylv.OLE reduced psychrotrophic counts as well as the level of pathogens (Salmonella enterica ser. Enteritidis and Shiga toxin-producing Escherichia coli O157:H7). A thiobarbituric acid reactive substance (TBARS) value of 2.42 ± 0.11 was reached throughout six days of retail/display in control samples, while the addition of 5% sylv.OLE reduced TBARS value by 58% (p < 0.05). The presence of sylv.OLE at the tested concentrations did not negatively influence the overall acceptability and bitterness of HMB.
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Can A, Ayvaz H, Pala ÇU, Condelli N, Galgano F, Tolve R. The potential of near and mid-infrared spectroscopy for rapid quantification of oleuropein, total phenolics, total flavonoids and antioxidant activity in olive tree (Olea europaea) leaves. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2018. [DOI: 10.1007/s11694-018-9892-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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21
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Cheurfa M, Allem R. Effet des extraits de quelques plantes sur les bactéries pathogènes responsables de gastroentérites. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s10298-017-1177-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Thielmann J, Kohnen S, Hauser C. Antimicrobial activity of Olea europaea Linné extracts and their applicability as natural food preservative agents. Int J Food Microbiol 2017; 251:48-66. [PMID: 28395179 DOI: 10.1016/j.ijfoodmicro.2017.03.019] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 03/10/2017] [Accepted: 03/26/2017] [Indexed: 01/13/2023]
Abstract
The antimicrobial activity of phenolic compounds from Olea (O.) europaea Linné (L.) is part of the scientific discussion regarding the use of natural plant extracts as alternative food preservative agents. Although, the basic knowledge on the antimicrobial potential of certain molecules such as oleuropein, hydroxytyrosol or elenolic acid derivatives is given, there is still little information regarding their applicability for food preservation. This might be primarily due to the lack of information regarding the full antimicrobial spectrum of the compounds, their synergisms in natural or artificial combinations and their interaction with food ingredients. The present review accumulates available literature from the past 40 years, investigating the antimicrobial activity of O. europaea L. derived extracts and compounds in vitro and in food matrices, in order to evaluate their food applicability. In summary, defined extracts from olive fruit or leaves, containing the strongest antimicrobial compounds hydroxytyrosol, oleacein or oleacanthal in considerable concentrations, appear to be suitable for food preservation. Nonetheless there is still need for consequent research on the compounds activity in food matrices, their effect on the natural microbiota of certain foods and their influence on the sensorial properties of the targeted products.
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Affiliation(s)
- J Thielmann
- Fraunhofer Institute for Process Engineering and Packaging IVV, Freising, Germany.
| | | | - C Hauser
- Fraunhofer Institute for Process Engineering and Packaging IVV, Freising, Germany
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De Candia S, Quintieri L, Caputo L, Baruzzi F. Antimicrobial Activity of Processed Spices Used in Traditional Southern Italian Sausage Processing. J FOOD PROCESS PRES 2016. [DOI: 10.1111/jfpp.13022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Silvia De Candia
- Institute of Sciences of Food Production; National Research Council of Italy; Via G. Amendola 122/o 70126 Bari Italy
| | - Laura Quintieri
- Institute of Sciences of Food Production; National Research Council of Italy; Via G. Amendola 122/o 70126 Bari Italy
| | - Leonardo Caputo
- Institute of Sciences of Food Production; National Research Council of Italy; Via G. Amendola 122/o 70126 Bari Italy
| | - Federico Baruzzi
- Institute of Sciences of Food Production; National Research Council of Italy; Via G. Amendola 122/o 70126 Bari Italy
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Identifying Antioxidant and Antimicrobial Activities of the Phenolic Extracts and Mineral Contents of Virgin Olive Oils ( Olea europaeaL. cv. Edincik Su) from Different Regions in Turkey. J CHEM-NY 2016. [DOI: 10.1155/2016/9589763] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The objective of this study was to identify the antioxidant and antimicrobial activities of the phenolic extracts and mineral contents of virgin olive oils (Olea europaeaL. cv. Edincik Su) obtained from three different locations, Edincik, Gomec, and Izmir, in Turkey. Antioxidant activity was analysed spectrometrically, antimicrobial effect was evaluated by disc diffusion method, and mineral contents were determined by using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES). Total phenolic contents and free radical scavenging activities of Edincik Su olive cultivar were found between 159.99 and 189.64 mg gallic acid equivalent/kg and 21.76 and 31.79% inhibition of DPPH•radical values, respectively. Phenolic composition was also varied according to location and hydroxytyrosol and tyrosol were determined as major phenolic compounds. Fourteen pathogenic bacteria and two fungal strains were used to determine the antimicrobial activity. Phenolic extracts showed antimicrobial effect against a wide range of microorganisms and the descending rank of the antimicrobial activities was Gomec, Izmir, and Edincik samples. The highest antimicrobial activities were determined againstClostridium perfringensATCC 13124 andCampylobacter jejuniATCC 33291 in all samples. Sixteen elements were used as standards (eleven of them were heavy metals) to identify mineral contents. Fe, Mg, Sn, K, and Ca were determined in Gomec samples and Mg and K were detected in Edincik samples while no mineral content was detected in Izmir sample.
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Cetin-Karaca H, Newman MC. Antimicrobial efficacy of plant phenolic compounds against Salmonella and Escherichia Coli. FOOD BIOSCI 2015. [DOI: 10.1016/j.fbio.2015.03.002] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hashmi MA, Khan A, Hanif M, Farooq U, Perveen S. Traditional Uses, Phytochemistry, and Pharmacology of Olea europaea (Olive). EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2015; 2015:541591. [PMID: 25802541 PMCID: PMC4352757 DOI: 10.1155/2015/541591] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 01/18/2015] [Accepted: 01/25/2015] [Indexed: 01/18/2023]
Abstract
Aim of the Review. To grasp the fragmented information available on the botany, traditional uses, phytochemistry, pharmacology, and toxicology of Olea europaea to explore its therapeutic potential and future research opportunities. Material and Methods. All the available information on O. europaea was collected via electronic search (using Pubmed, Scirus, Google Scholar, and Web of Science) and a library search. Results. Ethnomedical uses of O. europaea are recorded throughout the world where it has been used to treat various ailments. Phytochemical research had led to the isolation of flavonoids, secoiridoids, iridoids, flavanones, biophenols, triterpenes, benzoic acid derivatives, isochromans, and other classes of secondary metabolites from O. europaea. The plant materials and isolated components have shown a wide spectrum of in vitro and in vivo pharmacological activities like antidiabetic, anticonvulsant, antioxidant, anti-inflammatory, immunomodulatory, analgesic, antimicrobial, antiviral, antihypertensive, anticancer, antihyperglycemic, antinociceptive, gastroprotective, and wound healing activities. Conclusions. O. europaea emerged as a good source of traditional medicine for the treatment of various ailments. The outcomes of phytochemical and pharmacological studies reported in this review will further expand its existing therapeutic potential and provide a convincing support to its future clinical use in modern medicine.
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Affiliation(s)
- Muhammad Ali Hashmi
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Afsar Khan
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Muhammad Hanif
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Umar Farooq
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Shagufta Perveen
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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Meziani S, Oomah BD, Zaidi F, Simon-Levert A, Bertrand C, Zaidi-Yahiaoui R. Antibacterial activity of carob (Ceratonia siliqua L.) extracts against phytopathogenic bacteria Pectobacterium atrosepticum. Microb Pathog 2014; 78:95-102. [PMID: 25489722 DOI: 10.1016/j.micpath.2014.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 12/01/2014] [Accepted: 12/05/2014] [Indexed: 10/24/2022]
Abstract
Acetone and ethanol extracts of carob (Ceratonia siliqua L.) leaf and pods were evaluated for their in vitro inhibitory ability against the pectinolytic Gram negative Pectobacterium atrosepticum (Pca, CFBP-5384) bacteria, the causal agent of potato soft rot. Potato (Solanum tuberosum, var nicola) tuber rot tissues obtained after 5 day bacterial inoculation was analyzed by LC-MS and GC-MS to study Pca pathogenicity. Trans/cis N-feruloylputrescine was identified in potato tuber after 5-day inoculation with Pca in a dark moist chamber. Although glycoalkoloid (α-chaconine and α-solanine) production increased due to Pca soft rot infection, it was not a resistance-determining factor. Many secondary metabolites were identified including the phytoalexins solavetivone and fatty acids responsible for plant defence responses. Acetone extract of carob leaf (FCA) exhibited the strongest inhibitory effect (IC50 = 1.5 mg/ml) and displayed synergistic antimicrobial effect in the presence of infected potato tuber extract (Pdt-Pca extract) against Pca. This synergy could be used in an integrated control program against potato soft rot pathogens, thereby reducing chemical treatments.
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Affiliation(s)
- Saïda Meziani
- Laboratory of Applied Microbiology, Faculty of Nature and Life Sciences, A. Mira University, Bejaia 06000, Algeria; Laboratory of Chemistry of Biomolecules and Environment (LCBE), University of Perpignan Via Domitia, Perpignan, France
| | - B Dave Oomah
- Formerly with the National Bioproducts and Bioprocesses Program, Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, Summerland, BC V0H 1Z0, Canada
| | - Farid Zaidi
- Department of Food Science, Faculty of Nature and Life Sciences, A. Mira University, Bejaia 06000, Algeria
| | | | - Cédric Bertrand
- Laboratory of Chemistry of Biomolecules and Environment (LCBE), University of Perpignan Via Domitia, Perpignan, France
| | - Rachida Zaidi-Yahiaoui
- Laboratory of Applied Microbiology, Faculty of Nature and Life Sciences, A. Mira University, Bejaia 06000, Algeria.
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Sonda A, Akram Z, Boutheina G, Guido F, Mohamed B. Effect of addition of olive leaves before fruits extraction process to some monovarietal Tunisian extra-virgin olive oils using chemometric analysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:251-63. [PMID: 24328152 DOI: 10.1021/jf404395x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The analysis of the effect of cultivar and olive leaves addition before the extraction on the different analytical values revealed significant differences (p < 0.05) in some parameters, mainly in peroxide value, phenols and tocopherol contents, and oxidative stability. Aroma profiles were also influenced by the different varieties and the addition of different amounts (0% and 3%) of olive leaves. Twenty-three compounds were characterized, representing 86.1-99.2% of the total volatiles. Chétoui cultivar has the highest amount of (E)-2-hexenal, followed by Chemlali cultivar, whereas (E)-2-hexen-1-ol was the major constituent of Zalmati and crossbreeding Chemlali by Zalmati cultivars. Sensory analysis showed that Chemlali and Chétoui Zarzis possessed a high fruity, bitter, and pungent taste, whereas the Zalmati and crossbreeding Chemlali by Zalmati had a 'green' taste among its attributes. Indeed, the taste panel found an improvement of the oil quality when an amount of olive leaves (3%) added to the olives fruits.
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Affiliation(s)
- Ammar Sonda
- Laboratoire d'Electrochimie et Environnement, Ecole Nationale d'Ingénieurs de Sfax BP ⟨1173⟩ 3038, Université de Sfax , Sfax, Tunisia
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29
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Effect of Olive Leaves Addition during the Extraction Process of Overmature Fruits on Olive Oil Quality. FOOD BIOPROCESS TECH 2011. [DOI: 10.1007/s11947-011-0719-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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