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Fiorito S, Collevecchio C, Spogli R, Epifano F, Genovese S. Novel procedures for olive leaves extracts processing: Selective isolation of oleuropein and elenolic acid. Food Chem 2024; 447:139038. [PMID: 38507946 DOI: 10.1016/j.foodchem.2024.139038] [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: 12/22/2023] [Revised: 03/05/2024] [Accepted: 03/11/2024] [Indexed: 03/22/2024]
Abstract
Several processes have been developed in the past to selectively extract oleuropein and its aglycones from olive derived materials. In the present manuscript, we outline a novel approach for processing olive leaves aqueous extracts. This allowed first to select microwave irradiation as the methodology able to provide a large enrichment in oleuropein. Subsequently, the use of lamellar solids led to the selective and high yield concentration of the same. Adsorption on solids also largely contributed to the long term chemical stability of oleuropein. Finally, an eco-friendly, readily available, and reusable catalyst like H2SO4 supported on silica was applied for the hydrolysis of oleuropein into hydroxytyrosol and elenolic acid. This latter was in turn selectively isolated by an acid-base work-up providing its monoaldehydic dihydropyran form (7.8 % extractive yield), that was unequivocally characterized by GC-MS. The isolation of elenolic acid in pure form is described herein for the first time.
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Affiliation(s)
- Serena Fiorito
- Dipartimento di Farmacia, Università "G. d'Annunzio" Chieti - Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy.
| | - Chiara Collevecchio
- Dipartimento di Farmacia, Università "G. d'Annunzio" Chieti - Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy.
| | - Roberto Spogli
- Prolabin & Tefarm Srl, Via dell'Acciaio 9, 06129 Pontefelcino, Perugia, Italy.
| | - Francesco Epifano
- Dipartimento di Farmacia, Università "G. d'Annunzio" Chieti - Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy.
| | - Salvatore Genovese
- Dipartimento di Farmacia, Università "G. d'Annunzio" Chieti - Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy.
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2
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Gonzalez-Ortega R, Di Mattia CD, Pittia P, Natasa PU. Effect of heat treatment on phenolic composition and radical scavenging activity of olive leaf extract at different pH conditions: a spectroscopic and kinetic study. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:2047-2056. [PMID: 36461135 DOI: 10.1002/jsfa.12371] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 09/21/2022] [Accepted: 12/03/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND The present study focused on the effect of isothermal treatment (5-90 °C) and pH (2.0-6.0) of aqueous olive leaf phenolic extract solutions on the kinetics of degradation of single and total phenolic compounds and radical scavenging activity, with the objective of predicting and optimizing the thermal treatments in foods enriched with olive leaf extracts. RESULTS The major compound, oleuropein, showed higher degradation at low pH 2.0 and temperature-dependent reaction rates, which fitted well a first-order kinetic model, with an estimated activation energy of 98.03 ± 0.08 kJ mol-1 . Oleuropein hydrolysis resulted in a zero-order increase in hydroxytyrosol concentration at same pH (Ea = 71.59 ± 1.5 kJ mol-1 ), whereas a 100-fold slower degradation rate was observed at higher pH. Verbascoside was only degraded at pH 6.0, also following first-order kinetics. These changes in oleuropein and hydroxytyrosol concentrations led to significant changes in fluorescence maximum intensities centered around 315 and 360 nm and in the 425-500 nm spectral zone for samples at pH 6.0, which could be associated with verbacoside degradation. Conversely, analysis of total phenolic content and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging activity showed little changes, indicating a rather constant overall reducing capacity of the resulting pool of compounds after thermal treatments. CONCLUSION The present study can contribute to the knowledge related to oleuropein and phenolic fraction degradation as a result of matrix (pH) and processing. The kinetic parameters obtained could be applied for predicting and optimizing the thermal treatments in foods and drinks enriched with olive leaf extracts. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Rodrigo Gonzalez-Ortega
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Carla Daniela Di Mattia
- Faculty of Bioscience and Technology for Food Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Paola Pittia
- Faculty of Bioscience and Technology for Food Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Poklar Ulrih Natasa
- Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
- The Centre of Excellence for Integrated Approaches in Chemistry and Biology of Proteins (CipKeBiP), Ljubljana, Slovenia
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3
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İnan-Çınkır N, Ağçam E, Altay F, Akyıldız A. Extraction of carotenoid compounds from watermelon pulp with microemulsion based technique: Optimization studies. Food Chem 2022; 380:132169. [DOI: 10.1016/j.foodchem.2022.132169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 01/13/2022] [Accepted: 01/13/2022] [Indexed: 11/04/2022]
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Renoldi N, Lucci P, Peressini D. Impact of oleuropein on rheology and breadmaking performance of wheat doughs, and functional features of bread. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Niccolò Renoldi
- Department of Agricultural, Food, Environmental and Animal Sciences University of Udine Via Sondrio 2/A Udine 33100 Italy
| | - Paolo Lucci
- Department of Agricultural, Food, Environmental and Animal Sciences University of Udine Via Sondrio 2/A Udine 33100 Italy
| | - Donatella Peressini
- Department of Agricultural, Food, Environmental and Animal Sciences University of Udine Via Sondrio 2/A Udine 33100 Italy
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Enrichment of Refined Olive Oils with Phenolic Extracts of Olive Leaf and Exhausted Olive Pomace. Antioxidants (Basel) 2022; 11:antiox11020204. [PMID: 35204087 PMCID: PMC8868085 DOI: 10.3390/antiox11020204] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/13/2022] [Accepted: 01/19/2022] [Indexed: 02/01/2023] Open
Abstract
Refined olive oils (ROOs) are commonly enriched with synthetic antioxidants. Antioxidant extracts obtained from natural products can be used to improve the stability of these oils. In this study, ROOs were enriched through the addition of phenolic extracts from olive leaves (OLs) and exhausted olive pomace (EOP). In addition to replacing synthetic antioxidants with natural ones, this results in the valorization of these olive-derived biomasses. The most suitable method for mixing and enriching refined oils was probe-type ultrasonication using lecithin as the emulsifier. Thereafter, the change in the content of antioxidant compounds and the antioxidant capacity of the oils at 25, 35, and 45 °C were studied over 28 and 50 days of storage. The experimental results were fitted using a pseudo-first-order kinetic model. The oxidative stability index of the ROO enriched with a 2 g/L OL extract (70 h) was higher than that of a commercial ROO (46.8 h). Moreover, the oxidative stability index of the refined olive pomace oil (ROPO) enriched with a 2 g/L EOP extract (44.1 h) was higher than that of a commercial ROPO (38.9 h). In addition, the oxidative stabilities and antioxidant capacities of the oils were significantly correlated.
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Nanomicellar Extraction of Polyphenols-Methodology and Applications Review. Int J Mol Sci 2021; 22:ijms222111392. [PMID: 34768823 PMCID: PMC8584012 DOI: 10.3390/ijms222111392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/11/2021] [Accepted: 10/19/2021] [Indexed: 11/17/2022] Open
Abstract
The selection of the appropriate extraction method is crucial, especially for the receiving of active substances from plant material. The extraction using supercritical liquids and micellar-mediated extraction (MME) is the most advantageous among the alternative methods to classical solid-liquid extraction. However, the latter seems to be the best solution when the desired actives are polar. The following article presents a comprehensive review of the micellar-mediated extraction method in the last decade. The theoretical principle of the process was also refreshed and the current state of knowledge on the applications for analytical and manufacturing purposes was summarized.
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Nunes A, Gonçalves L, Marto J, Martins AM, Silva AN, Pinto P, Martins M, Fraga C, Ribeiro HM. Investigations of Olive Oil Industry By-Products Extracts with Potential Skin Benefits in Topical Formulations. Pharmaceutics 2021; 13:pharmaceutics13040465. [PMID: 33808196 PMCID: PMC8065837 DOI: 10.3390/pharmaceutics13040465] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/18/2021] [Accepted: 03/24/2021] [Indexed: 01/10/2023] Open
Abstract
The by-products of olive oil industry are a major ecological issue due to their phenolic content, highly toxic organic load, and low pH. However, they can be recovered and reused, since their components have antioxidant, anti-inflammatory, and photoprotector properties. In this work, oil-in-water creams containing three different olive oil industry by-products extracts were produced without the use of organic solvents. First, the extracts were thoroughly characterized in vitro for cytotoxicity, inhibition of skin enzymes, and antioxidant and photoprotection capacities. Safety studies were then performed, including ocular and skin irritation tests, ecotoxicity evaluation, and in vivo Human Repeat Insult Patch Test. The results obtained in this initial characterization supported the incorporation of the extracts in the cream formulations. After preparation, the creams were characterized for their organoleptic, physicochemical, droplet size and rheological properties, and microbial contamination. The results showed that all formulations were semi-solid creams, with stable pH, compatible with the skin, without microbial contamination, and with the expected droplet size range. The rheological analysis showed shear-thinning behavior with yield stress, with the viscosity decreasing with increasing shear rate. The oscillatory results suggest that the creams have a strong network structure, being easily rubbed into the skin. Finally, compatibility, acceptability and antioxidant efficacy were evaluated in vivo, in human volunteers. No adverse reactions were observed after application of the formulations on skin and the cream with the highest concentrations of phenolic compounds showed the highest antioxidant efficiency. In conclusion, the results suggest that olive oil industry by-products extracts have valuable properties that favor their re-use in the cosmetic industry. The example presented here showed their successful incorporation into creams and their impact in these formulations' appearance, pH, and rheological performance, as well as their in vivo compatibility with skin and antioxidant efficiency.
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Affiliation(s)
- Andreia Nunes
- Research Institute for Medicine (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal; (A.N.); (L.G.); (J.M.); (A.M.M.); (P.P.)
| | - Lídia Gonçalves
- Research Institute for Medicine (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal; (A.N.); (L.G.); (J.M.); (A.M.M.); (P.P.)
| | - Joana Marto
- Research Institute for Medicine (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal; (A.N.); (L.G.); (J.M.); (A.M.M.); (P.P.)
| | - Ana Margarida Martins
- Research Institute for Medicine (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal; (A.N.); (L.G.); (J.M.); (A.M.M.); (P.P.)
| | - Alexandra N. Silva
- ADEIM, Laboratório de Controlo Microbiológico, 1649-003 Lisbon, Portugal;
| | - Pedro Pinto
- Research Institute for Medicine (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal; (A.N.); (L.G.); (J.M.); (A.M.M.); (P.P.)
- PhDtrials, Avenida Maria Helena Vieira da Silva, n° 24 A, 1750-182 Lisboa, Portugal
| | - Marta Martins
- Marine and Environmental Sciences Centre (MARE), NOVA School of Science and Technology (FCT NOVA), Campus da Caparica, 2829-516 Caparica, Portugal;
| | - Carmo Fraga
- Sovena Portugal—Consumer Goods, S.A., Rua Dr. António Borges n°2, Edifício Arquiparque 2-3° Andar, 1495-131 Algés, Portugal;
| | - Helena Margarida Ribeiro
- Research Institute for Medicine (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisbon, Portugal; (A.N.); (L.G.); (J.M.); (A.M.M.); (P.P.)
- Correspondence: ; Tel.: +351-217-500-769
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Alibade A, Batra G, Bozinou E, Salakidou C, Lalas S. Optimization of the extraction of antioxidants from winery wastes using cloud point extraction and a surfactant of natural origin (lecithin). CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01269-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Motikar PD, More PR, Arya SS. A novel, green environment-friendly cloud point extraction of polyphenols from pomegranate peels: a comparative assessment with ultrasound and microwave-assisted extraction. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2020.1746969] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Pooja D. Motikar
- Bioprocess Technology Department, Institute of Chemical Technology, Mumbai, India
| | - Pavankumar R. More
- Food Engineering and Technology Department, Institute of Chemical Technology, Mumbai, India
| | - Shalini S. Arya
- Food Engineering and Technology Department, Institute of Chemical Technology, Mumbai, India
- Department of Biotechnology, Engineering School of Lorena, University of São Paulo, Lorena, Sao Paulo, Brazil
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In Vitro Anticoccidial Activity of Olive Pulp (Olea europaea L. var. Chemlal) Extract Against Eimeria Oocysts in Broiler Chickens. Acta Parasitol 2019; 64:887-897. [PMID: 31493179 DOI: 10.2478/s11686-019-00113-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 08/23/2019] [Indexed: 11/20/2022]
Abstract
AIM The objective of the present study was to investigate in vitro anticoccidial effect of olive pulp (Olea europaea L var. Chemlal) extract on the destruction of Eimeria spp. oocysts isolated from infected chickens naturally. MATERIALS AND METHODS The olive pulp (OP) powder was stirred manually in aqueous ethanol in preparation for extraction using the microwave-assisted extraction system. The identification of the phenolic compounds was obtained by ultra-high-performance liquid chromatography-mass spectrometry with electrospray ionisation (HPLC-ESI-MS). The treatment of Eimeria oocyst with OP extract and standard compounds (quercetin and oleuropein) leads to their lysis as shown by the release of substances absorbing at 273 nm. RESULTS Our results showed that the maximum number of reduced oocysts was recorded after 8 h of incubation of optimum OP extract, quercetin and oleuropein for different periods of time. Also, the number of Eimeria oocysts decreased considerably with increase concentrations after adding the optimum of OP extract in concentration ranging from 0.023 to 0.371 mg/ml. Positive correlation between the optimum OP extract concentrations and the number of Eimeria oocysts reduced was R2 = 0.959. From this in vitro experiment, it can be concluded that the OP extract possesses an anti-Eimeria spp activity. CONCLUSION To our knowledge, this is the first time that quercetin and oleuropein were tested to evaluate their anticoccidial activity. The findings of this study showed that phenolic compound of OP extract tested separately possesses anti-Eimeria spp. effect. Further studies should be carried out to test its in vivo efficacy of the OP bioactive compounds in broiler chickens.
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Integrated Process for Sequential Extraction of Bioactive Phenolic Compounds and Proteins from Mill and Field Olive Leaves and Effects on the Lignocellulosic Profile. Foods 2019; 8:foods8110531. [PMID: 31671747 PMCID: PMC6915506 DOI: 10.3390/foods8110531] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/23/2019] [Accepted: 10/27/2019] [Indexed: 12/21/2022] Open
Abstract
The extraction of bioactive compounds in a biorefinery context could be a way to valorize agri-food byproducts, but there is a remaining part that also requires attention. Therefore, in this work the integrated extraction of phenolic compounds, including the bioactive oleuropein, and proteins from olive mill leaves was addressed following three schemes, including the use of ultrasound. This affected the total phenolic content (4475.5-6166.9 mg gallic acid equivalents/100 g), oleuropein content (675.3-1790.0 mg/100 g), and antioxidant activity (18,234.3-25,459.0 µmol trolox equivalents/100 g). No effect was observed on either the protein recovery or the content of sugars and lignin in the extraction residues. Concerning the recovery of proteins, three operational parameters were evaluated by response surface methodology. The optimum (63.1%) was achieved using NaOH 0.7 M at 100 °C for 240 min. Then, the selected scheme was applied to olive leaves from the field, observing differences in the content of some of the studied components. It also changed the lignocellulosic profile of the extraction residues of both leaf types, which were enriched in cellulose. Overall, these results could be useful to diversify the valorization chain in the olive sector.
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12
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Kori S. Cloud point extraction coupled with back extraction: a green methodology in analytical chemistry. Forensic Sci Res 2019; 6:19-33. [PMID: 34007513 PMCID: PMC8112826 DOI: 10.1080/20961790.2019.1643567] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 04/15/2019] [Accepted: 05/13/2019] [Indexed: 12/05/2022] Open
Abstract
Recently, cloud point extraction (CPE) coupled with back extraction (BE) has been suggested as a promising alternative to liquid-liquid extraction. In CPE, non-ionic surfactants in aqueous solutions form micelles and the solution becomes turbid when heated to the cloud point temperature. Microwave- or ultrasonic-assisted BE can be performed after CPE and before injection of the sample for instrumental analysis by ultraviolet-visible spectroscopy, high-performance liquid chromatography, gas chromatography, gas chromatography-mass spectrometry, or liquid chromatography-mass spectrometry. This article reviews selected published scientific research on the application of CPE-BE to the determination of alkaloids, drugs and organophosphorus compounds from several complex matrices. This method could be scaled-up for use in forensic science.
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Affiliation(s)
- Shivpoojan Kori
- Chemistry, Biochemistry & Forensic Science, Amity School of Applied Sciences, Amity University Gurgaon (Manesar), Haryana, India
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Abi-Khattar AM, Rajha HN, Abdel-Massih RM, Maroun RG, Louka N, Debs E. Intensification of Polyphenol Extraction from Olive Leaves Using Ired-Irrad ®, an Environmentally-Friendly Innovative Technology. Antioxidants (Basel) 2019; 8:antiox8070227. [PMID: 31323872 PMCID: PMC6680986 DOI: 10.3390/antiox8070227] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/12/2019] [Accepted: 07/13/2019] [Indexed: 01/03/2023] Open
Abstract
Optimization of infrared-assisted extraction was conducted using Response Surface Methodology (RSM) in order to intensify polyphenol recovery from olive leaves. The extraction efficiency using Ired-Irrad®, a newly-patented infrared apparatus (IR), was compared to water bath (WB) conventional extraction. Under optimal conditions, as suggested by the model and confirmed experimentally, the total phenolic content yield was enhanced by more than 30% using IR as contrasted to WB, which even required 27% more ethanol consumption. High Performance Liquid Chromatography analyses quantified the two major phenolic compounds of the leaves: Oleuropein and hydroxytyrosol, which were both intensified by 18% and 21%, respectively. IR extracts increased the antiradical activity by 25% and the antioxidant capacity by 51% compared to WB extracts. On the other hand, extracts of olive leaves obtained by both techniques exhibited equal effects regarding the inhibition of 20 strains of Staphylococcusaureus, with a minimum inhibitory concentration (MIC) varying between 3.125 and 12.5 mg/mL. Similarly, both extracts inhibited Aflatoxin B1 (AFB1) secretion by Aspergillus flavus, with no growth inhibition of the fungus. Finally, optimization using RSM allowed us to suggest other IR operating conditions aiming at significantly reducing the consumption of energy and solvent, while maintaining similar quantity and quality of phenolic compounds as what is optimally obtained using WB.
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Affiliation(s)
- Anna-Maria Abi-Khattar
- Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-alimentaire, Faculté des Sciences, Université Saint-Joseph, B.P. 17-5208 Riad El Solh, Beirut 1104 2020, Lebanon
| | - Hiba N Rajha
- Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-alimentaire, Faculté des Sciences, Université Saint-Joseph, B.P. 17-5208 Riad El Solh, Beirut 1104 2020, Lebanon
| | | | - Richard G Maroun
- Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-alimentaire, Faculté des Sciences, Université Saint-Joseph, B.P. 17-5208 Riad El Solh, Beirut 1104 2020, Lebanon.
| | - Nicolas Louka
- Centre d'Analyses et de Recherche, Unité de Recherche Technologies et Valorisation Agro-alimentaire, Faculté des Sciences, Université Saint-Joseph, B.P. 17-5208 Riad El Solh, Beirut 1104 2020, Lebanon
| | - Espérance Debs
- Department of Biology, University of Balamand, Tripoli, P. O. Box 100, Lebanon
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Bilska A, Kobus-Cisowska J, Kmiecik D, Danyluk B, Kowalski R, Szymanowska D, Gramza-Michałowska A, Szczepaniak O. Cholinesterase inhibitory activity, antioxidative potential and microbial stability of innovative liver pâté fortified with rosemary extract (Rosmarinus officinalis). ELECTRON J BIOTECHN 2019. [DOI: 10.1016/j.ejbt.2019.03.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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15
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Edziri H, Jaziri R, Chehab H, Verschaeve L, Flamini G, Boujnah D, Hammami M, Aouni M, Mastouri M. A comparative study on chemical composition, antibiofilm and biological activities of leaves extracts of four Tunisian olive cultivars. Heliyon 2019; 5:e01604. [PMID: 31193420 PMCID: PMC6529682 DOI: 10.1016/j.heliyon.2019.e01604] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/05/2019] [Accepted: 04/26/2019] [Indexed: 01/21/2023] Open
Abstract
Olea europaea L. is one of the most important fruit trees in Tunisia because of its content of many potentially bioactive compounds. The aim of this study was to evaluate the chemical composition, antibiofilm, antiradical and acethylcholinesterase inhibitory activities from four Tunisian cultivars of Olea europaea L., i.e. ‘Chetoui’, ‘Meski’, ‘Oueslati’ and ‘Jarboui’. By means of standardized methods, total phenols were determined and some of them characterized by HPLC. The total phenols and flavonoids contents were found to be the highest in the leaves of Chetoui cultivar. The Chetoui cultivar exhibited an important antioxidant and anticholinesterasic activity and an important anti-biofilm activity against Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus cereus, Candida albicans, Enterococcus faecalis and Escherichia coli, with percentages of inhibition comprised between 83 and 93% at 2xMIC values. Olive leaves extracts could be used in the control of bacterial biofilms in food and food-related environments.
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Affiliation(s)
- Hayet Edziri
- Laboratory of Transmissible Diseases and Biologically Active Substances, Faculty of Pharmacy, 5000, Monastir, Tunisia
| | - Raouf Jaziri
- Department of Healthcare Services and Hospital Management, University of Jeddah, Saudi Arabia.,Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Hechmi Chehab
- Institut of Olive Sousse, B.P.40 Ibn Khaldoun, 4061, Sousse, Tunisia
| | - Luc Verschaeve
- Sciensano, Risk and Health Impact Assessment Service, Brussels, Belgium.,Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Guido Flamini
- Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium.,Dipartimento di Farmacia, Via Bonanno 6, 56126, Pisa, Italy.,Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute" (NUTRAFOOD), Università di Pisa, Via del Borghetto 80, 56124, Pisa, Italy
| | - Dalenda Boujnah
- Institut of Olive Sousse, B.P.40 Ibn Khaldoun, 4061, Sousse, Tunisia
| | - Mohamed Hammami
- Laboratory of Biochemistry, USCR Mass Spectrometry, UR Nutrition and Metabolic Disorders, Faculty of Medicine, University of Monastir, 5000, Monastir, Tunisia
| | - Mahjoub Aouni
- Laboratory of Transmissible Diseases and Biologically Active Substances, Faculty of Pharmacy, 5000, Monastir, Tunisia
| | - Maha Mastouri
- Laboratory of Transmissible Diseases and Biologically Active Substances, Faculty of Pharmacy, 5000, Monastir, Tunisia
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Novel, energy efficient and green cloud point extraction: technology and applications in food processing. Journal of Food Science and Technology 2019; 56:524-534. [PMID: 30906010 DOI: 10.1007/s13197-018-3546-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/01/2018] [Accepted: 12/10/2018] [Indexed: 10/27/2022]
Abstract
Recently, a novel technique for extraction of functional thermally sensitive bioactive components from food has been developed due to its green efficacy (no toxic chemicals) and cost effectiveness. Cloud point extraction (CPE) is one of the such best alternative techniques that can be used for extraction of wide range of organic and inorganic components using green surfactants. It is a simple, rapid and inexpensive extraction technique which involves clustering of non-ionic surfactant monomers to form a hydrophobic core (micelle), which then entraps the hydrophobic bioactive compounds within it. CPE can be applied for extraction of bioactives from food processing waste as well as separation and purification of proteins. Besides that, research has received special attention on sample preparation for analysis of food constituents in the last decade. The scope of CPE is very vast in these sectors because of the advantages of CPE over other methods. This review deals with significance of CPE method and their potential green applications in food processing.
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de Araújo Padilha CE, de Azevedo JCS, de Sousa FC, de Oliveira SD, Souza DFDS, de Oliveira JA, de Macedo GR, dos Santos ES. Recovery of polyphenols from camu-camu (Myrciaria dubia H.B.K. McVaugh) depulping residue by cloud point extraction. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2017.10.032] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Amidžić M, Marić P, Fumić B, Petlevski R, Bljajić K, Končić MZ. Oleuropein-Rich Olive Leaf Extracts May Ameliorate Consequences of Glucose-Induced Oxidative Stress in Hep G2 Cells. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300601] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Olive leaf is reputed to have many beneficial health-related properties, often attributed to the iridoid glycoside oleuropein. In this work, the composition and antioxidant activity of oleuropein-rich olive leaf extracts prepared by ultrasonication were investigated. In addition, the influence of the extracts on Hep G2 cells subjected to glucose-induced oxidative stress was examined. The prepared extracts acted as antioxidants rich in oleuropein and other polyphenols. Among them, the extract prepared at 20°C using 100% ethanol was the most effective radical scavenger, antioxidant and metal chelator. It also contained the largest amount of oleuropein and other phenolic constituents. The extract prepared at 20°C using 70% ethanol, on the other hand, showed the best yield among the investigated extracts. Furthermore, it was able to preserve the cell-membrane integrity of Hep G2 cells subjected to glucose-induced oxidative stress, as well as to maintain intracellular concentration of glutathione and the activity of glutathione S-transferase on the levels comparable to those observed in non-stressed cells. The presented results demonstrate that oleuropein-rich olive leaf extracts can effectively ameliorate the consequences of glucose-induced oxidative stress in liver cells.
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Affiliation(s)
- Mirjana Amidžić
- Department of Pharmacognosy, University of Zagreb Faculty of Pharmacy and Biochemistry, Marulićev trg 20, 10000 Zagreb Croatia
| | - Patricia Marić
- Department of Pharmacognosy, University of Zagreb Faculty of Pharmacy and Biochemistry, Marulićev trg 20, 10000 Zagreb Croatia
| | - Barbara Fumić
- Department of Pharmacognosy, University of Zagreb Faculty of Pharmacy and Biochemistry, Marulićev trg 20, 10000 Zagreb Croatia
| | - Roberta Petlevski
- Department of Medicinal Chemistry, University of Zagreb Faculty of Pharmacy and Biochemistry, Kneza Domagoja 1, 10000 Zagreb Croatia
| | - Kristina Bljajić
- Department of Pharmacognosy, University of Zagreb Faculty of Pharmacy and Biochemistry, Marulićev trg 20, 10000 Zagreb Croatia
| | - Marijana Zovko Končić
- Department of Pharmacognosy, University of Zagreb Faculty of Pharmacy and Biochemistry, Marulićev trg 20, 10000 Zagreb Croatia
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Castejón ML, Rosillo MÁ, Montoya T, González-Benjumea A, Fernández-Bolaños JG, Alarcón-de-la-Lastra C. Oleuropein down-regulated IL-1β-induced inflammation and oxidative stress in human synovial fibroblast cell line SW982. Food Funct 2017; 8:1890-1898. [PMID: 28426090 DOI: 10.1039/c7fo00210f] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Rheumatoid arthritis (RA) is a chronic and systemic inflammatory autoimmune disease mainly characterized by aggressive hyperproliferation of synovial fibroblasts (SFs). It is accompained by a massive infiltration of inflammatory immune cells inducing progressive matrix degradation, destruction of cartilage and bone erosion through the production of inflammatory mediators. Oleuropein is the most prevalent phenolic component in olive leaves, seed, pulp and peel of unripe olives and is responsible for the characteristic bitter taste of unprocessed olives. This secoiridoid possesses well-documented pharmacological properties, including antioxidant and anti-inflammatory properties, and is available as a food supplement in Mediterranean countries. However, to date, anti-arthritic effects of oleuropein on SFs have not been yet elucidated. Thus, the aim of the present study was to investigate the potential effects of oleuropein, on IL-1β-induced production of inflammatory mediators and oxidative stress in the human synovial sarcoma cell line (SW982). In order to gain a better insight into mechanisms of action, signaling pathways were also explored. Cell viability was determined using the sulforhodamine B (SRB) assay. The expression of inflammatory cytokines IL-6, TNF-α, MMP-1 and MMP-3 was evaluated by ELISA. Moreover, changes in the protein expression of cyclooxygenase (COX)-2, microsomal prostaglandin E synthase-1 (mPGES-1) as well as mitogen-activated protein kinase (MAPKs), nuclear factor kappa B (NF-κB), and nuclear factor-erythroid 2-related and heme oxygenase-1 (HO-1) signalling pathways were analysed by western blot. Oleuropein exerted anti-inflammatory and anti-oxidant effects via down-regulation of MAPK and NF-κB signaling pathways and induction of Nrf2-linked HO-1 controlling the production of inflammatory mediators decreasing IL-6 and TNF-α cytokines, MMP-1 and MMP-3 levels and mPGES-1 and COX-2 overexpression. Thus, oleuropein might provide a basis for developing a new dietary strategy for the prevention and management of RA.
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Distribution of apparent activation energy counterparts during thermo – And thermo-oxidative degradation of Aronia melanocarpa (black chokeberry). Food Chem 2017; 230:30-39. [DOI: 10.1016/j.foodchem.2017.03.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 02/25/2017] [Accepted: 03/03/2017] [Indexed: 02/02/2023]
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21
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Goula AM, Ververi M, Adamopoulou A, Kaderides K. Green ultrasound-assisted extraction of carotenoids from pomegranate wastes using vegetable oils. ULTRASONICS SONOCHEMISTRY 2017; 34:821-830. [PMID: 27773309 DOI: 10.1016/j.ultsonch.2016.07.022] [Citation(s) in RCA: 160] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 07/12/2016] [Accepted: 07/26/2016] [Indexed: 05/18/2023]
Abstract
The objective of this work was to develop a new process for pomegranate peels application in food industries based on ultrasound-assisted extraction of carotenoids using different vegetable oils as solvents. In this way, an oil enriched with antioxidants is produced. Sunflower oil and soy oil were used as alternative solvents and the effects of various parameters on extraction yield were studied. Extraction temperature, solid/oil ratio, amplitude level, and extraction time were the factors investigated with respect to extraction yield. Comparative studies between ultrasound-assisted and conventional solvent extraction were carried out in terms of processing procedure and total carotenoids content. The efficient extraction period for achieving maximum yield of pomegranate peel carotenoids was about 30min. The optimum operating conditions were found to be: extraction temperature, 51.5°C; peels/solvent ratio, 0.10; amplitude level, 58.8%; solvent, sunflower oil. A second-order kinetic model was successfully developed for describing the mechanism of ultrasound extraction under different processing parameters.
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Affiliation(s)
- Athanasia M Goula
- Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 541 24 Thessaloniki, Greece.
| | - Maria Ververi
- Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 541 24 Thessaloniki, Greece
| | - Anna Adamopoulou
- Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 541 24 Thessaloniki, Greece
| | - Kyriakos Kaderides
- Department of Food Science and Technology, School of Agriculture, Forestry and Natural Environment, Aristotle University, 541 24 Thessaloniki, Greece
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Souilem S, Fki I, Kobayashi I, Khalid N, Neves MA, Isoda H, Sayadi S, Nakajima M. Emerging Technologies for Recovery of Value-Added Components from Olive Leaves and Their Applications in Food/Feed Industries. FOOD BIOPROCESS TECH 2016. [DOI: 10.1007/s11947-016-1834-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Janković B, Marinović-Cincović M, Janković M. Isoconversional kinetic study and accurate determination of lifetime properties for thermal and thermo-oxidative degradation processes of Aronia melanocarpa. INNOV FOOD SCI EMERG 2016. [DOI: 10.1016/j.ifset.2015.10.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Lee KM, Kim KY, Choi O, Woo HM, Kim Y, Han SO, Sang BI, Um Y. In situ detoxification of lignocellulosic hydrolysate using a surfactant for butyric acid production by Clostridium tyrobutyricum ATCC 25755. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.01.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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GHASEMI E, KAYKHAII M. Developing a New Micro Cloud Point Extraction Method for Simultaneous Preconcentration and Spectrophotometric Determination of Uranium and Vanadium in Brine. ANAL SCI 2015; 31:407-11. [DOI: 10.2116/analsci.31.407] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Elham GHASEMI
- Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan
| | - Massoud KAYKHAII
- Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan
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