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Georgiou N, Kakava MG, Routsi EA, Petsas E, Stavridis N, Freris C, Zoupanou N, Moschovou K, Kiriakidi S, Mavromoustakos T. Quercetin: A Potential Polydynamic Drug. Molecules 2023; 28:8141. [PMID: 38138630 PMCID: PMC10745404 DOI: 10.3390/molecules28248141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/12/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023] Open
Abstract
The study of natural products as potential drug leads has gained tremendous research interest. Quercetin is one of those natural products. It belongs to the family of flavonoids and, more specifically, flavonols. This review summarizes the beneficial pharmaceutical effects of quercetin, such as its anti-cancer, anti-inflammatory, and antimicrobial properties, which are some of the quercetin effects described in this review. Nevertheless, quercetin shows poor bioavailability and low solubility. For this reason, its encapsulation in macromolecules increases its bioavailability and therefore pharmaceutical efficiency. In this review, a brief description of the different forms of encapsulation of quercetin are described, and new ones are proposed. The beneficial effects of applying new pharmaceutical forms of nanotechnology are outlined.
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Affiliation(s)
- Nikitas Georgiou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
| | - Margarita Georgia Kakava
- Laboratory of Organic Chemistry and Biochemistry, Department of Chemistry, University of Patras, 26504 Patras, Greece;
| | - Efthymios Alexandros Routsi
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
- Center of Excellence for Drug Design and Discovery, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - Errikos Petsas
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
| | - Nikolaos Stavridis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
| | - Christoforos Freris
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece;
| | - Nikoletta Zoupanou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
| | - Kalliopi Moschovou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
| | - Sofia Kiriakidi
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
- Departamento de Quimica Orgánica, Facultade de Quimica, Universidade de Vigo, 36310 Vigo, Spain
| | - Thomas Mavromoustakos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (N.G.); (E.A.R.); (E.P.); (N.S.); (N.Z.); (K.M.); (S.K.)
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Mansour FR, Abdallah IA, Bedair A, Hamed M. Analytical Methods for the Determination of Quercetin and Quercetin Glycosides in Pharmaceuticals and Biological Samples. Crit Rev Anal Chem 2023:1-26. [PMID: 37898879 DOI: 10.1080/10408347.2023.2269421] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Flavonoids are plant-derived compounds that have several health benefits, including antioxidative, anti-inflammatory, anti-mutagenic, and anti-carcinogenic effects. Quercetin is a flavonoid that is widely present in various fruits, vegetables, and drinks. Accurate determination of quercetin in different samples is of great importance for its potential health benefits. This review, is an overview of sample preparation and determination methods for quercetin in diverse matrices. Previous research on sample preparation and determination methods for quercetin are summarized, highlighting the advantages and disadvantages of each method and providing insights into recent developments in quercetin sample treatment. Various analytical techniques are discussed including spectroscopic, chromatographic, electrophoretic, and electrochemical methods for the determination of quercetin and its derivatives in different samples. UV-Vis (Ultraviolet-visible) spectrophotometry is simple and inexpensive but lacks selectivity. Chromatographic techniques (HPLC, GC) offer selectivity and sensitivity, while electrophoretic and electrochemical methods provide high resolution and low detection limits, respectively. The aim of this review is to comprehensively explore the determination methods for quercetin and quercetin glycosides in diverse matrices, with emphasis on pharmaceutical and biological samples. The review also provides a theoretical basis for method development and application for the analysis of quercetin and quercetin glycosides in real samples.
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Affiliation(s)
- Fotouh R Mansour
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Tanta University, Tanta 31111, Egypt
| | - Inas A Abdallah
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City 32897, Monufia, Egypt
| | - Alaa Bedair
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City 32897, Monufia, Egypt
| | - Mahmoud Hamed
- School of Information Technology and Computer Science (ITCS), Nile University, Giza, Egypt
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Lee VJ, Heffern MC. Structure-activity assessment of flavonoids as modulators of copper transport. Front Chem 2022; 10:972198. [PMID: 36082200 PMCID: PMC9445161 DOI: 10.3389/fchem.2022.972198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 07/11/2022] [Indexed: 11/29/2022] Open
Abstract
Flavonoids are polyphenolic small molecules that are abundant in plant products and are largely recognized for their beneficial health effects. Possessing both antioxidant and prooxidant properties, flavonoids have complex behavior in biological systems. The presented work investigates the intersection between the biological activity of flavonoids and their interactions with copper ions. Copper is required for the proper functioning of biological systems. As such, dysregulation of copper is associated with metabolic disease states such as diabetes and Wilson’s disease. There is evidence that flavonoids bind copper ions, but the biological implications of their interactions remain unclear. Better understanding these interactions will provide insight into the mechanisms of flavonoids’ biological behavior and can inform potential therapeutic targets. We employed a variety of spectroscopic techniques to study flavonoid-Cu(II) binding and radical scavenging activities. We identified structural moieties important in flavonoid-copper interactions which relate to ring substitution but not the traditional structural subclassifications. The biological effects of the investigated flavonoids specifically on copper trafficking were assessed in knockout yeast models as well as in human hepatocytes. The copper modulating abilities of strong copper-binding flavonoids were largely influenced by the relative hydrophobicities. Combined, these spectroscopic and biological data help elucidate the intricate nature of flavonoids in affecting copper transport and open avenues to inform dietary recommendations and therapeutic development.
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An Electrochemical Determination of the Total Reducing Capacity of Wheat, Spelt, and Rye Breads. Antioxidants (Basel) 2022; 11:antiox11081438. [PMID: 35892640 PMCID: PMC9330432 DOI: 10.3390/antiox11081438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/16/2022] [Accepted: 07/21/2022] [Indexed: 11/18/2022] Open
Abstract
The most interesting activities associated with bread components such as phenolic compounds, fibre, tocols, or newly formed compounds in the Maillard reaction, are their reducing properties responsible for the formation of the overall reducing capacity of bread. Among the electrochemical methods, the cyclic voltammetry (CV) technique has been recently adapted for this purpose. In this study, the application of the CV assay for the determination of the total reducing capacity of flours, doughs, and breads as well as their crumbs and crusts, originated from wheat, spelt, and rye formulated on white flours (extraction rate of 70%) and dark flours (extraction rate of 100%) and baked at 200 °C for 35 min and at 240 °C for 30 min was addressed. The reducing capacity of hydrophilic extracts from white flours and breads as well as their crumbs and crusts showed double values when compared to that of lipophilic ones whilst hydrophilic and lipophilic extracts from dark breads and their parts revealed comparable levels. The dark wheat, spelt, and rye breads showed an approximately threefold higher total reducing capacity than white breads. Baking at higher temperature slightly increased the total reducing capacity of breads and the highest value was found for dark rye bread as well as its crust baked at 240 °C for 30 min. The cyclic voltammetry methodology showed to be especially suitable for screening the bread technology and allows for obtaining rapid electrochemical profiles of bread samples.
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Doménech-Carbó A, Dias D. In situ electrochemical monitoring of ROS influence in the dynamics of ascorbic acid and polyphenolic compounds in apple fruits. Food Chem 2021; 374:131818. [PMID: 34915362 DOI: 10.1016/j.foodchem.2021.131818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 11/03/2021] [Accepted: 12/05/2021] [Indexed: 01/22/2023]
Abstract
In situ recording of the voltammetric profile of different apple (Malus domestica Borkh.) varieties (Golden, Granny Smith, Reineta, Red delicious, Fuji, and Braeburn) without and with ROS generation is reported. The voltammetric response associated to the oxidation of ascorbic acid (AA) and polyphenolic (PPs) components was recorded. The obtained voltammetric profiles were satisfactorily fitted to a theoretical kinetic model consisting of the competing, dual activation pathways of AA and PPs followed by a degradative step. The rate constants for these processes were calculated from voltammetric data revealing significant differences between varieties. The activation pathways as well as the influence of electrochemical ROS generation on it were variety-sensitive while the degradative step was almost variety insensitive and lightly sensitive to ROS generation.
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Affiliation(s)
- Antonio Doménech-Carbó
- Departament de Química analítca, Universitat de València, Dr. Moliner 50, 46100 Burjassot (València), Spain.
| | - Daiane Dias
- Laboratório de Eletro-Espectro Analítica (LEEA), Escola de Química e Alimentos, Universidade Federal do Rio Grande, Av. Itália km 8, Rio Grande 96203-900, RS, Brazil
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Alsharif MA, Naeem N, Mughal EU, Sadiq A, Jassas R, Kausar S, Altaf AA, Zafar MN, Mumtaz A, Obaid RJ, Alsantali RI, Ahmed S, Ahmed I, Altass HM, Ahmed SA. Experimental and theoretical insights into the photophysical and electrochemical properties of flavone-based hydrazones. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130965] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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7
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Doménech-Carbó A. Electrochemistry of plants: basic theoretical research and applications in plant science. J Solid State Electrochem 2021. [DOI: 10.1007/s10008-021-05046-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chiorcea-Paquim AM, Enache TA, De Souza Gil E, Oliveira-Brett AM. Natural phenolic antioxidants electrochemistry: Towards a new food science methodology. Compr Rev Food Sci Food Saf 2020; 19:1680-1726. [PMID: 33337087 DOI: 10.1111/1541-4337.12566] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 03/26/2020] [Accepted: 03/31/2020] [Indexed: 11/27/2022]
Abstract
Natural phenolic compounds are abundant in the vegetable kingdom, occurring mainly as secondary metabolites in a wide variety of chemical structures. Around 10,000 different plant phenolic derivatives have been isolated and identified. This review provides an exhaustive overview concerning the electron transfer reactions in natural polyphenols, from the point of view of their in vitro antioxidant and/or pro-oxidant mode of action, as well as their identification in highly complex matrixes, for example, fruits, vegetables, wine, food supplements, relevant for food quality control, nutrition, and health research. The accurate assessment of polyphenols' redox behavior is essential, and the application of the electrochemical methods in routine quality control of natural products and foods, where the polyphenols antioxidant activity needs to be quantified in vitro, is of the utmost importance. The phenol moiety oxidation pathways and the effect of substituents and experimental conditions on their electrochemical behavior will be reviewed. The fundamental principles concerning the redox behavior of natural polyphenols, specifically flavonoids and other benzopyran derivatives, phenolic acids and ester derivatives, quinones, lignins, tannins, lignans, essential oils, stilbenes, curcuminoids, and chalcones, will be described. The final sections will focus on the electroanalysis of phenolic antioxidants in natural products and the electroanalytical evaluation of in vitro total antioxidant capacity.
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Affiliation(s)
| | - Teodor Adrian Enache
- CEMMPRE, Department of Chemistry, University of Coimbra, Coimbra, 3004-535, Portugal
| | - Eric De Souza Gil
- CEMMPRE, Department of Chemistry, University of Coimbra, Coimbra, 3004-535, Portugal.,Faculdade de Farmácia, Universidade Federal de Goiás, Setor Universitário, Goiânia, Goiás, Brasil
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Ribeiro GAC, da Rocha CQ, Veloso WB, Dantas LMF, Richter EM, da Silva IS, Tanaka AA. Flow-through amperometric methods for detection of the bioactive compound quercetin: performance of glassy carbon and screen-printed carbon electrodes. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04599-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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10
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Anitha S, Krishnan S, Senthilkumar K, Sasirekha V. Theoretical investigation on the structure and antioxidant activity of (+) catechin and (−) epicatechin – a comparative study. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1745917] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- S. Anitha
- Department of Physics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, India
| | - S. Krishnan
- Department of Physics, Bharathiar University, Coimbatore, India
| | - K. Senthilkumar
- Department of Physics, Bharathiar University, Coimbatore, India
| | - V. Sasirekha
- Department of Physics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, India
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11
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Electrochemical determination of antioxidant activity and HPLC profiling of some dry fruits. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-019-02441-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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12
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Bocharova O. New evidence of anthocyanins reduction in fruit juices on Pt electrode, and separate investigation of their oxidized and reduced forms. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2019. [DOI: 10.1007/s11694-018-0007-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Some peculiarities of taxifolin electrooxidation in the aqueous media: The dimers formation as a key to the mechanism understanding. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.03.179] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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14
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Bocharova O. New evidence of appropriate fruit juice redox conditions for citric acid acting as a proton-carrier on Pt electrode: the effect on evaluating antioxidant properties. J Solid State Electrochem 2018. [DOI: 10.1007/s10008-018-3893-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Lauw SJL, Chiang Z, Lee JHQ, Webster RD. Comparing the Relative Reactivities of Structurally Varied Alcohols toward Electrochemically Generated Superoxide. ChemElectroChem 2017. [DOI: 10.1002/celc.201701030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Sherman J. L. Lauw
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Zhong Chiang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Jazreen H. Q. Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Richard D. Webster
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
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17
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Anti-inflammatory and antioxidative effects of Camellia oleifera Abel components. Future Med Chem 2017; 9:2069-2079. [PMID: 28793800 DOI: 10.4155/fmc-2017-0109] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Camellia oleifera Abel is a member of Camellia, and its seeds are used to extract Camellia oil, which is generally used as cooking oil in the south of China. Camellia oil consists of unsaturated fatty acids, tea polyphenol, squalene, saponin, carrot element and vitamins, etc. The seed remains after oil extraction of C. oleifera Abel are by-products of oil production, named as Camellia oil cake. Its extracts contain bioactive compounds including sasanquasaponin, flavonoid and tannin. Major components from Camellia oil and its cake have been shown to have anti-inflammatory, antioxidative, antimicrobial and antitumor activities. In this review, we will summarize the latest advance in the studies on anti-inflammatory or antioxidative effects of C. oleifera products, thus providing valuable reference for the future research and development of C. oleifera Abel.
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18
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Bocharova O, Bocharova M. Forecasting and evaluating antioxidant properties of fruit, and vegetable, juices using polarization curves. J FOOD PROCESS PRES 2017. [DOI: 10.1111/jfpp.13225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Oksana Bocharova
- Odessa National Academy of Food Technology, Kanatnaya Str. 112; Odessa 65039 Ukraine
| | - Maiia Bocharova
- Odessa National Economic University, Preobrajenskaya Str. 8; Odessa 65000 Ukraine
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19
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Lauw SJL, Yeo JYH, Chiang Z, Webster RD. Comparing the Relative Reactivities of Food and Vitamin Molecules Toward Electrochemically Generated Superoxide in Dimethylformamide. ChemElectroChem 2017. [DOI: 10.1002/celc.201600790] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sherman J. L. Lauw
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Joyce Y. H. Yeo
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Zhong Chiang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Richard D. Webster
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
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20
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Pisoschi AM, Pop A, Cimpeanu C, Predoi G. Antioxidant Capacity Determination in Plants and Plant-Derived Products: A Review. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:9130976. [PMID: 28044094 PMCID: PMC5164913 DOI: 10.1155/2016/9130976] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 09/24/2016] [Accepted: 10/10/2016] [Indexed: 12/16/2022]
Abstract
The present paper aims at reviewing and commenting on the analytical methods applied to antioxidant and antioxidant capacity assessment in plant-derived products. Aspects related to oxidative stress, reactive oxidative species' influence on key biomolecules, and antioxidant benefits and modalities of action are discussed. Also, the oxidant-antioxidant balance is critically discussed. The conventional and nonconventional extraction procedures applied prior to analysis are also presented, as the extraction step is of pivotal importance for isolation and concentration of the compound(s) of interest before analysis. Then, the chromatographic, spectrometric, and electrochemical methods for antioxidant and antioxidant capacity determination in plant-derived products are detailed with respect to their principles, characteristics, and specific applications. Peculiarities related to the matrix characteristics and other factors influencing the method's performances are discussed. Health benefits of plants and derived products are described, as indicated in the original source. Finally, critical and conclusive aspects are given when it comes to the choice of a particular extraction procedure and detection method, which should consider the nature of the sample, prevalent antioxidant/antioxidant class, and the mechanism underlying each technique. Advantages and disadvantages are discussed for each method.
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Affiliation(s)
- Aurelia Magdalena Pisoschi
- Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Splaiul Independentei, Sector 5, 050097 Bucharest, Romania
| | - Aneta Pop
- Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Splaiul Independentei, Sector 5, 050097 Bucharest, Romania
| | - Carmen Cimpeanu
- Faculty of Land Reclamation and Environmental Engineering, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Blvd, Sector 1, 011464 Bucharest, Romania
| | - Gabriel Predoi
- Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Splaiul Independentei, Sector 5, 050097 Bucharest, Romania
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21
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A sensitive and reliable rutin electrochemical sensor based on palladium phthalocyanine-MWCNTs-Nafion nanocomposite. J Solid State Electrochem 2016. [DOI: 10.1007/s10008-016-3447-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Bocharova O, Reshta S, Eshtokin V. Toluene and Benzyl Alcohol Formation in Fruit Juices Containing Benzoates. J FOOD PROCESS PRES 2016. [DOI: 10.1111/jfpp.13054] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Oksana Bocharova
- Odessa National Academy of Food Technology; Kanatnaya St. 112 Odessa 65039 Ukraine
| | - Sentyabrina Reshta
- Odessa National Academy of Food Technology; Kanatnaya St. 112 Odessa 65039 Ukraine
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23
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Ivanova AV, Gerasimova EL, Brainina KZ. Potentiometric study of antioxidant activity: development and prospects. Crit Rev Anal Chem 2016; 45:311-22. [PMID: 25830410 DOI: 10.1080/10408347.2014.910443] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The increasing interest in the study of the antioxidant activity of different objects is caused by an unbalance between the formation of reactive oxygen species (ROS) and the performance of the antioxidant system in humans under certain conditions, which leads to oxidative stress and pathological states of the organism. This article presents a brief critical review of the methods that are used to measure integrated antioxidant activity (AOA). It is shown that the most promising methods for measuring AOA are electrochemical ones, particularly potentiometry, as it best fits the nature of the processes causing oxidative stress. The article gives the theoretical rational for requirements that an oxidizer of antioxidants (AO) should meet. The work presents the thermodynamic grounds for the use of an earlier proposed mediator system, kinetics of chemical reactions between AO and the mediator system. In order to confirm reliability and accuracy of the results, numerous correlation studies were conducted, aiming to compare the data obtained with the use the proposed method and independent analytical methods. The article presents the results of the potentiometric study of AOA for a variety of objects, including individual antioxidant → nutritional supplements → food → blood and blood fractions.
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Affiliation(s)
- A V Ivanova
- a Ural Federal University , Ekaterinburg , Russia
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24
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Terenteva EA, Apyari VV, Dmitrienko SG, Zolotov YA. Formation of plasmonic silver nanoparticles by flavonoid reduction: A comparative study and application for determination of these substances. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:89-95. [PMID: 26125987 DOI: 10.1016/j.saa.2015.06.049] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 06/16/2015] [Accepted: 06/17/2015] [Indexed: 05/13/2023]
Abstract
Formation of plasmonic silver nanoparticles by flavonoid reduction was studied. Effects of the nature and the concentration of a flavonoid and a stabilizer, composition of the solution and the interaction time were revealed. It was found that quercetin, dihydroquercetin, rutin and morin produced an intense surface plasmon resonance band of silver nanoparticles at 415 nm which was linearly related to the concentration of a flavonoid, while chrysin, naringenin and naringin did not produce any remarkable changes. It was used for the spectrophotometric determination of the former four flavonoids with the detection limits of 0.03; 0.06; 0.09 and 0.1 μg mL(-1), respectively. The developed method was applied for the determination of flavonoids in biologically active food additives.
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Affiliation(s)
- E A Terenteva
- Analytical Chemistry Division, Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, Moscow 119991, Russia
| | - V V Apyari
- Analytical Chemistry Division, Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, Moscow 119991, Russia.
| | - S G Dmitrienko
- Analytical Chemistry Division, Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, Moscow 119991, Russia
| | - Yu A Zolotov
- Analytical Chemistry Division, Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, Moscow 119991, Russia
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Magarelli G, Lima LHC, da Silva JG, SouzaDe JR, de Castro CSP. Rutin and total isoflavone determination in soybean at different growth stages by using voltammetric methods. Microchem J 2014. [DOI: 10.1016/j.microc.2014.06.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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