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Mir-Cerdà A, Granados M, Saurina J, Sentellas S. Olive tree leaves as a great source of phenolic compounds: Comprehensive profiling of NaDES extracts. Food Chem 2024; 456:140042. [PMID: 38876070 DOI: 10.1016/j.foodchem.2024.140042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 05/23/2024] [Accepted: 06/07/2024] [Indexed: 06/16/2024]
Abstract
Waste from the olive industry is a noticeable source of antioxidant compounds that can be extracted and reused to produce raw materials related to the chemical, cosmetic, food and pharmaceutical sectors. This work studies the phenolic composition of olive leaf samples using liquid chromatography with ultraviolet detection coupled to mass spectrometry (LC-UV-MS). Olive leaf waste samples have been crushed, homogenized, and subjected to a solid-liquid extraction treatment with mechanical shaking at 80 °C for 2 h using Natural Deep Eutectic Solvents (NaDES). The phenolic compound identification in the resulting extracts has been carried out by high-resolution mass spectrometry (HRMS) using data-dependent acquisition mode using an Orbitrap HRMS instrument. >60 different phenolic compounds have been annotated tentatively, of which about 20 have been confirmed from the corresponding standards. Some of the most noticeable compounds are oleuropein and its aglycone and glucoside form, luteolin-7-O-glucoside, 3-hydroxytyrosol, and verbascoside.
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Affiliation(s)
- Aina Mir-Cerdà
- Department of Chemical Engineering and Analytical Chemistry, Universitat de Barcelona, E08028 Barcelona, Spain.; Research Institute in Food Nutrition and Food Safety, Universitat de Barcelona, E08921 Santa Coloma de Gramenet, Spain..
| | - Mercè Granados
- Department of Chemical Engineering and Analytical Chemistry, Universitat de Barcelona, E08028 Barcelona, Spain.; Research Institute in Food Nutrition and Food Safety, Universitat de Barcelona, E08921 Santa Coloma de Gramenet, Spain..
| | - Javier Saurina
- Department of Chemical Engineering and Analytical Chemistry, Universitat de Barcelona, E08028 Barcelona, Spain.; Research Institute in Food Nutrition and Food Safety, Universitat de Barcelona, E08921 Santa Coloma de Gramenet, Spain..
| | - Sonia Sentellas
- Department of Chemical Engineering and Analytical Chemistry, Universitat de Barcelona, E08028 Barcelona, Spain.; Research Institute in Food Nutrition and Food Safety, Universitat de Barcelona, E08921 Santa Coloma de Gramenet, Spain.; Serra Húnter Fellow, Departament de Recerca i Universitats, Generalitat de Catalunya, E08003 Barcelona, Spain..
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An overview of the extraction and characterization of bioactive phenolic compounds from agri-food waste within the framework of circular bioeconomy. Trends Analyt Chem 2023. [DOI: 10.1016/j.trac.2023.116994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
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3
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Mir-Cerdà A, Carretero I, Coves JR, Pedrouso A, Castro-Barros CM, Alvarino T, Cortina JL, Saurina J, Granados M, Sentellas S. Recovery of phenolic compounds from wine lees using green processing: Identifying target molecules and assessing membrane ultrafiltration performance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159623. [PMID: 36283524 DOI: 10.1016/j.scitotenv.2022.159623] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 10/07/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Winery wastes are rich in polyphenols with high added value to be used in cosmetics, pharmaceuticals, and food products. This work aims at recovering and purifying the polyphenolic fraction occurring in the malolactic fermentation lees generated during the production of Albariño wines. Phenolic acids, flavonoids, and related compounds were recovered from this oenological waste by green liquid extraction using water as the solvent. The resulting extract solution was microfiltered to remove microparticles and further treated by ultrafiltration (UF) using membranes of 30 kDa and 5 kDa molecular weight cut-offs (MWCOs). The feed sample and the filtrate and retentate solutions from each membrane system were analyzed by reversed-phase liquid chromatography (HPLC) with UV and mass spectrometric (MS) detection. The most abundant polyphenols in the extracts were identified and quantified, namely: caftaric acid with a concentration of 200 µg g-1 and trans-coutaric acid, cis-coutaric acid, gallic acid, and astilbin with concentrations between 15 and 40 µg g-1. Other minor phenolic acids and flavanols were also found. The UF process using the 30 kDa membrane did not modify the extract composition, but filtration through the 5 kDa poly-acrylonitrile membrane elicited a decrease in polyphenolic content. Hence, the 30 kDa membrane was recommended to further pre-process the extracts. The combined extraction and purification process presented here is environmentally friendly and demonstrates that malolactic fermentation lees of Albariño wines are a valuable source of phenolic compounds, especially phenolic acids.
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Affiliation(s)
- Aina Mir-Cerdà
- Department of Chemical Engineering and Analytical Chemistry, Universitat de Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain; Research Institute in Food Nutrition and Food Safety, Universitat de Barcelona, Av. Prat de la Riba 171, Edifici Recerca (Gaudí), E08921 Santa Coloma de Gramenet, Spain
| | - Iris Carretero
- Department of Chemical Engineering and Analytical Chemistry, Universitat de Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain
| | - José Rubén Coves
- Galician Water Research Center Foundation (Cetaqua Galicia), AquaHub - A Vila da Auga, Rúa José Villar Granjel 33, E-15890, Santiago de Compostela, Spain
| | - Alba Pedrouso
- Galician Water Research Center Foundation (Cetaqua Galicia), AquaHub - A Vila da Auga, Rúa José Villar Granjel 33, E-15890, Santiago de Compostela, Spain
| | - Celia María Castro-Barros
- Galician Water Research Center Foundation (Cetaqua Galicia), AquaHub - A Vila da Auga, Rúa José Villar Granjel 33, E-15890, Santiago de Compostela, Spain
| | - Teresa Alvarino
- Galician Water Research Center Foundation (Cetaqua Galicia), AquaHub - A Vila da Auga, Rúa José Villar Granjel 33, E-15890, Santiago de Compostela, Spain
| | - José Luis Cortina
- Department of Chemical Engineering, Escola d'Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya (UPC)-BarcelonaTECH, Eduard Maristany 10-14, Campus Diagonal-Besòs, E08930 Barcelona, Spain; Barcelona Research Center for Multiscale Science and Engineering, Campus Diagonal-Besòs, E-08930 Barcelona, Spain
| | - Javier Saurina
- Department of Chemical Engineering and Analytical Chemistry, Universitat de Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain; Research Institute in Food Nutrition and Food Safety, Universitat de Barcelona, Av. Prat de la Riba 171, Edifici Recerca (Gaudí), E08921 Santa Coloma de Gramenet, Spain
| | - Mercè Granados
- Department of Chemical Engineering and Analytical Chemistry, Universitat de Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain
| | - Sonia Sentellas
- Department of Chemical Engineering and Analytical Chemistry, Universitat de Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain; Research Institute in Food Nutrition and Food Safety, Universitat de Barcelona, Av. Prat de la Riba 171, Edifici Recerca (Gaudí), E08921 Santa Coloma de Gramenet, Spain; Serra Húnter Lecturer, Generalitat de Catalunya, Rambla de Catalunya 19-21, E08007 Barcelona, Spain.
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Alternative Extraction and Downstream Purification Processes for Anthocyanins. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27020368. [PMID: 35056685 PMCID: PMC8779312 DOI: 10.3390/molecules27020368] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 01/04/2022] [Indexed: 12/15/2022]
Abstract
Anthocyanins are natural pigments displaying different attractive colors ranging from red, violet, to blue. These pigments present health benefits that increased their use in food, nutraceuticals, and the cosmetic industry. However, anthocyanins are mainly extracted through conventional methods that are time-consuming and involve the use of organic solvents. Moreover, the chemical diversity of the obtained complex extracts make the downstream purification step challenging. Therefore, the growing demand of these high-value pigments has stimulated the interest in designing new, safe, cost-effective, and tunable strategies for their extraction and purification. The current review focuses on the potential application of compressed fluid-based (such as subcritical and supercritical fluid extraction and pressurized liquid extraction) and deep eutectic solvents-based extraction methods for the recovery of anthocyanins. In addition, an updated review of the application of counter-current chromatography for anthocyanins purification is provided as a faster and cost-effective alternative to preparative-scale HPLC.
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Integrated Green Process for the Extraction of Red Grape Pomace Antioxidant Polyphenols Using Ultrasound-Assisted Pretreatment and β-Cyclodextrin. BEVERAGES 2021. [DOI: 10.3390/beverages7030059] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Winemaking is a process that generates a large volume of solid waste biomass, which is currently under extensive investigation as a bioresource of precious polyphenolic compounds. These substances are retrieved from vinification side streams principally by deploying solid–liquid extraction methods. In this frame, the present investigation had as objective the development of an alternative, green extraction process for polyphenols, through integration of ultrasonication as a pretreatment stage, and subsequent extraction with aqueous β-cyclodextrin. Polyphenol recovery from red grape pomace (RGP) was shown to be significantly enhanced by ultrasonication pretreatment, and the use of β-cyclodextrin effectively boosted the aqueous extraction. Under optimized conditions, established by response surface methodology, the maximum yield in total polyphenols was 57.47 mg GAE g−1 dm, at 80 °C, requiring a barrier of 10.95 kJ mol−1. The extract produced was significantly enriched in catechin and quercetin, compared to the aqueous extract, exhibiting also increased antiradical activity. These findings highlighted the value of the process developed for targeted recovery of certain polyphenols and the preparation of task-specific extracts.
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A Critical Review on Pulsed Electric Field: A Novel Technology for the Extraction of Phytoconstituents. Molecules 2021; 26:molecules26164893. [PMID: 34443475 PMCID: PMC8400384 DOI: 10.3390/molecules26164893] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/07/2021] [Accepted: 08/11/2021] [Indexed: 02/07/2023] Open
Abstract
Different parts of a plant (seeds, fruits, flower, leaves, stem, and roots) contain numerous biologically active compounds called “phytoconstituents” that consist of phenolics, minerals, amino acids, and vitamins. The conventional techniques applied to extract these phytoconstituents have several drawbacks including poor performance, low yields, more solvent use, long processing time, and thermally degrading by-products. In contrast, modern and advanced extraction nonthermal technologies such as pulsed electric field (PEF) assist in easier and efficient identification, characterization, and analysis of bioactive ingredients. Other advantages of PEF include cost-efficacy, less time, and solvent consumption with improved yields. This review covers the applications of PEF to obtain bioactive components, essential oils, proteins, pectin, and other important materials from various parts of the plant. Numerous studies compiled in the current evaluation concluded PEF as the best solution to extract phytoconstituents used in the food and pharmaceutical industries. PEF-assisted extraction leads to a higher yield, utilizes less solvents and energy, and it saves a lot of time compared to traditional extraction methods. PEF extraction design should be safe and efficient enough to prevent the degradation of phytoconstituents and oils.
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Rama JLR, Mallo N, Biddau M, Fernandes F, de Miguel T, Sheiner L, Choupina A, Lores M. Exploring the powerful phytoarsenal of white grape marc against bacteria and parasites causing significant diseases. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:24270-24278. [PMID: 31939019 DOI: 10.1007/s11356-019-07472-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
Natural extracts containing high polyphenolic concentration possess antibacterial, anti-parasitic and fungicidal activities. The present research characterises two extracts based on white grape marc, a winemaking by-product, describing their physicochemical features and antimicrobial capacities. The main components of these extracts are phenolic acids, flavan-3-ols and their gallates and flavonols and their glycosides. As a result of this complex composition, the extracts showed pronounced bioactivities with potential uses in agricultural, pharmaceutical and cosmetic industries. Polyphenol compounds were extracted by using hydro-organic solvent mixtures from the by-product of Albariño white wines (Galicia, NW Spain) production. The in vitro antimicrobial activity of these extracts was evaluated on Gram-positive and Gram-negative bacteria and Apicomplexan and Oomycota parasites. Microbial species investigated are causing agents of several human and animal diseases, such as foodborne illnesses (Bacillus cereus, Escherichia coli, Salmonella enterica, and Toxoplasma gondii), skin infections and/or mastitis (Staphylococcus aureus and Streptococcus uberis), malaria (Plasmodium falciparum) and plant infections as "chestnut ink" or "root rot" (Phytophthora cinnamomi). Both extracts showed activity against all the tested species, being nontoxic for the host. So, they could be used for the development of biocides to control a wide range of pathogenic agents and contribute to the enhancement of winemaking industry by-products.
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Affiliation(s)
- José-Luis Rodríguez Rama
- Department of Microbiology and Parasitology, University of Santiago de Compostela, Santiago de Compostela, E-15782, A Coruña, Spain
| | - Natalia Mallo
- Wellcome Centre for Integrative Parasitology. Department of Infection, Immunity and Inflamation., University of Glasgow, 120 University Place, Glasgow, UK
| | - Marco Biddau
- Wellcome Centre for Integrative Parasitology. Department of Infection, Immunity and Inflamation., University of Glasgow, 120 University Place, Glasgow, UK
| | - Francisco Fernandes
- Department of Socioeconomical systems, I. Politécnico Bragança, 5300-253, Terras Trás-os-Montes, Portugal
| | - Trinidad de Miguel
- Department of Microbiology and Parasitology, University of Santiago de Compostela, Santiago de Compostela, E-15782, A Coruña, Spain.
| | - Lilach Sheiner
- Wellcome Centre for Integrative Parasitology. Department of Infection, Immunity and Inflamation., University of Glasgow, 120 University Place, Glasgow, UK
| | - Altino Choupina
- Department of Socioeconomical systems, I. Politécnico Bragança, 5300-253, Terras Trás-os-Montes, Portugal
| | - Marta Lores
- Department of Analytical Chemistry, Nutrition and Food Science, Laboratory of Research and Development of Analytical Solutions (LIDSA), University of Santiago de Compostela, Santiago de Compostela, E-15782, A Coruña, Spain
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Chen J, Thilakarathna WPDW, Astatkie T, Rupasinghe HPV. Optimization of Catechin and Proanthocyanidin Recovery from Grape Seeds Using Microwave-Assisted Extraction. Biomolecules 2020; 10:biom10020243. [PMID: 32033405 PMCID: PMC7072399 DOI: 10.3390/biom10020243] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 01/26/2020] [Accepted: 02/02/2020] [Indexed: 12/18/2022] Open
Abstract
Grape seed extract (GSE) is a rich source of condensed flavonoid tannins, also called proanthocyanidins (PACs). The high molecular weight of polymeric PAC limits their biological activity due to poor bioavailability. The present study was undertaken to explore the potential applicability of microwave-assisted extraction (MAE) to convert GSE-PAC into monomeric catechins. A central composite design (CCD) was used to optimize the processing conditions for the MAE. The maximum total yield of monomeric catechins (catechin, epicatechin, and epicatechin gallate) and PAC were 8.2 mg/g dry weight (DW) and 56.4 mg catechin equivalence (CE)/g DW, respectively. The optimized MAE condition was 94% ethanol, 170 °C temperature, and a duration of 55 min. Compared to the results for PACs extracted via conventional extraction (Con) (94% ethanol; shaking at 25 °C for 55 min), MAE yielded 3.9-fold more monomeric catechins and 5.5-fold more PACs. The MAE showed higher antioxidant capacity and α-glucosidase inhibitory activity than that of the conventional extract, suggesting the potential use of the MAE products of grape seeds as a functional food ingredient and nutraceutical.
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Affiliation(s)
- Jing Chen
- Institute of TCM and Natural Products, Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, 185 East Lake Road, Wuhan 430071, China;
| | - W. P. D. Wass Thilakarathna
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada;
| | - Tessema Astatkie
- Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada;
| | - H. P. Vasantha Rupasinghe
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada;
- Correspondence: ; Tel.: +1-902-893-6623
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Parallel enrichment of polyphenols and phytosterols from Pinot noir grape seeds with molecularly imprinted polymers and analysis by capillary high-performance liquid chromatography electrospray ionisation tandem mass spectrometry. Talanta 2020; 208:120397. [DOI: 10.1016/j.talanta.2019.120397] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 09/26/2019] [Accepted: 09/27/2019] [Indexed: 11/23/2022]
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Kalhor P, Ghandi K. Deep Eutectic Solvents for Pretreatment, Extraction, and Catalysis of Biomass and Food Waste. Molecules 2019; 24:E4012. [PMID: 31698717 PMCID: PMC6891572 DOI: 10.3390/molecules24224012] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 10/28/2019] [Accepted: 11/04/2019] [Indexed: 12/14/2022] Open
Abstract
Valorization of lignocellulosic biomass and food residues to obtain valuable chemicals is essential to the establishment of a sustainable and biobased economy in the modern world. The latest and greenest generation of ionic liquids (ILs) are deep eutectic solvents (DESs) and natural deep eutectic solvents (NADESs); these have shown great promise for various applications and have attracted considerable attention from researchers who seek versatile solvents with pretreatment, extraction, and catalysis capabilities in biomass- and biowaste-to-bioenergy conversion processes. The present work aimed to review the use of DESs and NADESs in the valorization of biomass and biowaste as pretreatment or extraction solvents or catalysis agents.
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Affiliation(s)
- Payam Kalhor
- MOE Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, China;
| | - Khashayar Ghandi
- Department of Chemistry, University of Guelph, Guelph, ON N1G 2W1, Canada
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Natolino A, Da Porto C. Supercritical carbon dioxide extraction of pomegranate (Punica granatum L.) seed oil: Kinetic modelling and solubility evaluation. J Supercrit Fluids 2019. [DOI: 10.1016/j.supflu.2019.05.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Puglisi R, Severgnini A, Tava A, Montedoro M. In Vitro Assessment of the Antioxidant Properties of Aqueous Byproduct Extracts of Vitis vinifera. Food Technol Biotechnol 2019; 57:119-125. [PMID: 31316284 PMCID: PMC6600299 DOI: 10.17113/ftb.57.01.19.5879] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Aqueous extracts were obtained at low temperature with the Naviglio technology from grapevine stalks (Merlot), marc (Merlot and Cabernet Sauvignon) and leaves (Merlot) as typical byproducts of winemaking industry, and their properties were evaluated cytofluorometrically on human dermal fibroblasts. Leaf extracts had the greatest total phenolic ((47.6±3.5) mg/g) and proanthocyanidin ((24.2±0.1) mg/g) contents compared to the others. The preliminary colorimetric MTT (3-[4,5-dimethylthiazole-2-yl]-2,5-diphenyltetrazolium bromide) assay individuated two consecutive non-toxic volume fractions of each extract (from 0.8 to 12.8%) that were adopted for three cytofluorometric tests. The first cell membrane test did not evidence any harmful effects against plasma membranes at the two non-toxic volume fractions. The second mitochondrial membrane test showed a decreased (p<0.01) percentage of cells ((15.7±8.3) vs (32.5±1.3) %) with active polarized mitochondrial membranes at the higher non-cytotoxic volume fractions of extracts from Cabernet Sauvignon marc in response to 4.5 mM H2O2, and from Merlot stalks (p<0.05) at 1.5 mM H2O2 ((49.3±6.1) vs (64.6±2.4) %) and without H2O2 ((89.7±2.4) vs (96.9±1.8) %), compared to the controls submitted to the same H2O2 concentration. Conversely, mitochondrial activity of leaf extracts significantly (p<0.05) increased ((96.3±1.8) and (96.4±1.4) %) after treatment with 0.5 mM H2O2 at both non-cytotoxic volume fractions compared to control ((88.2±1.1) %). Finally, as evidenced by the third oxidative status test, stalk extracts did not evidence relevant effects on the cellular oxidative state, while the extracts of marc and leaves demonstrated significantly medium (p<0.05) to highly (p<0.001) positive effects following exposure to H2O2 ranging from 0.5 to 4.5 mM, compared to controls.
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Affiliation(s)
- Roberto Puglisi
- Istituto Sperimentale Italiano Lazzaro Spallanzani, Loc. La Quercia, 26027 Rivolta d'Adda (CR), Italy
| | - Alex Severgnini
- Istituto Sperimentale Italiano Lazzaro Spallanzani, Loc. La Quercia, 26027 Rivolta d'Adda (CR), Italy
| | - Aldo Tava
- CREA-ZA Centro di Ricerca Zootecnia e Acquacoltura, Viale Piacenza 29, 26900 Lodi, Italy
| | - Marina Montedoro
- Istituto Sperimentale Italiano Lazzaro Spallanzani, Loc. La Quercia, 26027 Rivolta d'Adda (CR), Italy
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Gallego R, Bueno M, Herrero M. Sub- and supercritical fluid extraction of bioactive compounds from plants, food-by-products, seaweeds and microalgae – An update. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.04.030] [Citation(s) in RCA: 136] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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14
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Toribio L, Arranz S, Ares AM, Bernal J. Polymeric stationary phases based on poly(butylene terephthalate) and poly(4-vinylpirydine) in the analysis of polyphenols using supercritical fluid chromatography. Application to bee pollen. J Chromatogr A 2018; 1572:128-136. [PMID: 30150114 DOI: 10.1016/j.chroma.2018.08.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/01/2018] [Accepted: 08/19/2018] [Indexed: 12/27/2022]
Abstract
Two new polymer-based stationary phases; DCpak PBT (poly(butylene terephthalate)) and DCpak P4VP (poly(4-vinylpirydine)) were evaluated for the analysis of polyphenols using supercritical fluid chromatography (SFC). The compounds studied included phenolic acids and flavonoids. The different variables that influence the chromatographic separation, such as type and percentage of organic modifier, additive, pressure and temperature were examined. Using the DCpak P4VP column the retention was exceptionally high, obtaining better results with the DCpak PBT column. The separation of nine polyphenols was achieved using a gradient of modifier (methanol with 0.1% trifluoroacetic acid) from 5 to 50%, a pressure of 150 bar, a temperature of 35 °C and a flow-rate of 2 mL/min. The use of additives was necessary in order to obtain good peak shapes and efficiencies, achieving the best results with trifluoroacetic acid. LODs and LOQs values were lower than 5 μg/mL in all the cases; meanwhile, the %RSD values for method repeatability and inter-day reproducibility were lower than 3% and 10% respectively. Finally, the proposed method was successfully applied to the analysis of polyphenols in commercial bee pollen; four compounds, namely cinnamic acid, p-coumaric acid, catechin and quercetin were identified and quantified.
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Affiliation(s)
- Laura Toribio
- I.U. CINQUIMA, Analytical Chemistry Group, University of Valladolid, Spain.
| | - Sandra Arranz
- I.U. CINQUIMA, Analytical Chemistry Group, University of Valladolid, Spain
| | - Ana M Ares
- I.U. CINQUIMA, Analytical Chemistry Group, University of Valladolid, Spain
| | - José Bernal
- I.U. CINQUIMA, Analytical Chemistry Group, University of Valladolid, Spain
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