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Salimgareeva E, Starcheusova V, Gerasimova E, Gordeeva D, Ivanova A. Potentiometry in determining the antioxidant capacity of compounds of different hydrophilicity in the joint presence using mixed solvents and surfactants. ANAL SCI 2024:10.1007/s44211-024-00662-z. [PMID: 39254884 DOI: 10.1007/s44211-024-00662-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Accepted: 08/26/2024] [Indexed: 09/11/2024]
Abstract
In this work, for the first time, the potentiometric method was used to determine the antioxidant capacity (AOC) of compounds of different hydrophilicity in the joint presence using mixed solvents and surfactants. The AOC of model solutions of antioxidants of different hydrophilicity was determined separately and in the joint presence in the media of phosphate buffer-surfactant and mixed solvents-surfactant, using as an example the ascorbic acid and the α-tocopherol. It was shown that the surfactant Triton X-100 is able to solubilize α-tocopherol under the selected conditions, allows to obtain reproducible and accurate results, and has less effect on the equilibrium rate of the K3[Fe(CN)6]/K4[Fe(CN)6] system. Phosphate buffer-ethanol and phosphate buffer-acetonitrile media in the 3:2 ratio with Triton X-100 (5 mmol/dm3) were chosen as the analysis conditions (RSD ≤ 6%). The range of determined concentrations was (0.006-0.5) m mmol/dm3 in phosphate buffer-ethanol and (0.006-0.3) m mmol/dm3 in phosphate buffer-acetonitrile. AOC of raw materials infusions was determined in selected media. The positive correlation with the well-known Folin-Ciocalteu assay was obtained.
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Affiliation(s)
- Elena Salimgareeva
- Chemical Technological Institute, Ural Federal University named after the First President of Russia B. N. Yeltsin, 19 Mira St, Ekaterinburg, Russian Federation, 620002.
| | - Violetta Starcheusova
- Chemical Technological Institute, Ural Federal University named after the First President of Russia B. N. Yeltsin, 19 Mira St, Ekaterinburg, Russian Federation, 620002
| | - Elena Gerasimova
- Chemical Technological Institute, Ural Federal University named after the First President of Russia B. N. Yeltsin, 19 Mira St, Ekaterinburg, Russian Federation, 620002
| | - Daria Gordeeva
- Chemical Technological Institute, Ural Federal University named after the First President of Russia B. N. Yeltsin, 19 Mira St, Ekaterinburg, Russian Federation, 620002
| | - Alla Ivanova
- Chemical Technological Institute, Ural Federal University named after the First President of Russia B. N. Yeltsin, 19 Mira St, Ekaterinburg, Russian Federation, 620002
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Salimgareeva E, Igdisanova D, Gordeeva D, Yarkova E, Matern A, Gerasimova E, Ivanova A. Portable potentiometric device for determining the antioxidant capacity. CHIMICA TECHNO ACTA 2022. [DOI: 10.15826/chimtech.2023.10.1.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
At present, the development of portable devices for the express assessment of the content of biologically active objects, such as antioxidants, is one of the relevant technological problems of modern chemistry, medicine, and engineering. The main advantages of such devices are the simplicity and rapidity of analysis, small volumes of analyte, as well as miniaturization of equipment, making it possible to carry out the on-site analysis and, thus, to take a step towards the personalized medicine. The potentiometric method using the K3[Fe(CN)6]/K4[Fe(CN)6] system, which in the laboratory-scale version proved to be the most accurate, reproducible, and express, was the basis for the developed prototypes of portable devices. In this study, two versions of prototypes of the portable device are proposed, namely, the open microcell with the 0.2 ml volume and the microfluidic device with flow control. The correctness of the antioxidant capacity (AOC) determination in both systems was confirmed by comparing the results of the "introduced-found" method on model solutions of antioxidants and their mixtures with the AOC results obtained in a standard laboratory electrochemical cell. The relative standard deviation did not exceed 10%. The AOC of some beverage industry was determined using the microfluidic device. The correlation coefficient of the results, obtained in the microfluidic device and the laboratory cell, was 0.90, which indicates good data convergence and the possibility of using the potentiometric method implemented in the microfluidic device to assess the AOC of multicomponent objects.
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Study of total antioxidant activity of green tea leaves ( Camellia sinensis L.). HERBA POLONICA 2022. [DOI: 10.2478/hepo-2022-0003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Summary
Introduction: There is a high interest in creating medicines, dietary supplements, cosmetics including plant extract with antioxidant activity. For understanding whether plant extract has a maximum level of antioxidant activity it is important to know the total antioxidant activity of raw material.
Objective: The main goal of study was to find out the green tea leaves total antioxidant activity.
Methods: The antioxidant activity was measured by potentiometric method. Total phenolic, flavonoids, catechins and hydrocinnamic acids derivatives were quantified using Folin-Ciocalteu, aluminium chloride, vanillin and sodium molibdate methods, respectively.
Results: The green tea leaves total antioxidant activity was 660.75 mmol-eqv./mres. dry weight. A significant correlation was observed between the amount of phytochemicals and antioxidant activity, which indicated its main role in antioxidant activity.
Conclusion: The research showed that the green rea leaves possess a high value of antioxidant activity and it is a good source of phenolic constituents.
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Brainina KZ, Shpigun LK. State‐of‐the‐art electrochemistry for the assessment of oxidative stress and integral antioxidant activity of biological environments. ELECTROCHEMICAL SCIENCE ADVANCES 2022. [DOI: 10.1002/elsa.202100219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Khiena Z. Brainina
- Laboratory of analytical chemisty and separation methods N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences Moscow Russia
| | - Liliya K. Shpigun
- Laboratory of analytical chemisty and separation methods N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences Moscow Russia
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Abstract
Antioxidants are compounds that prevent or delay the oxidation process, acting at a much smaller concentration, in comparison to that of the preserved substrate. Primary antioxidants act as scavenging or chain breaking antioxidants, delaying initiation or interrupting propagation step. Secondary antioxidants quench singlet oxygen, decompose peroxides in non-radical species, chelate prooxidative metal ions, inhibit oxidative enzymes. Based on antioxidants’ reactivity, four lines of defense have been described: Preventative antioxidants, radical scavengers, repair antioxidants, and antioxidants relying on adaptation mechanisms. Carbon-based electrodes are largely employed in electroanalysis given their special features, that encompass large surface area, high electroconductivity, chemical stability, nanostructuring possibilities, facility of manufacturing at low cost, and easiness of surface modification. Largely employed methods encompass voltammetry, amperometry, biamperometry and potentiometry. Determination of key endogenous and exogenous individual antioxidants, as well as of antioxidant activity and its main contributors relied on unmodified or modified carbon electrodes, whose analytical parameters are detailed. Recent advances based on modifications with carbon-nanotubes or the use of hybrid nanocomposite materials are described. Large effective surface area, increased mass transport, electrocatalytical effects, improved sensitivity, and low detection limits in the nanomolar range were reported, with applications validated in complex media such as foodstuffs and biological samples.
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An integrated approach to the investigation of antioxidant properties by potentiometry. Anal Chim Acta 2020; 1111:83-91. [PMID: 32312401 DOI: 10.1016/j.aca.2020.03.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/06/2020] [Accepted: 03/20/2020] [Indexed: 12/19/2022]
Abstract
An analytical methodology is proposed for a comprehensive study of antioxidant properties of various objects based on the implementation of various mechanisms of antioxidant action. In order to interpret results regarding the action of antioxidants in living organisms it is proposed to adhere to certain requirements for research methods of antioxidant properties, for oxidizing agents of a radical and non-radical nature. The developed integrated approach consists in using the potentiometry method and is based on the antioxidant capacity determination which is founded on the interaction of antioxidants with the К3[Fe(CN)6] by the ET-mechanism and the conjugation mechanism and the antiradical capacity determination based on the interaction of antioxidants with peroxyl radicals by the HAT-mechanism. Individual antioxidants of natural origin, plant materials extracts as well as synthesized 6-nitro-1,2,4-triazoloazin containing polyphenols fragments, which are complex conjugated structures, have been investigated. It has been shown that in the antioxidants study it is advisable to use the integrated approach that will allow to evaluate antioxidant properties from the point of view of various antioxidants action mechanisms.
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The antioxidant screening of potential materials for drugs based on 6-nitro-1,2,4-triazoloazines containing natural polyphenol fragments. Anal Bioanal Chem 2020; 412:5147-5155. [PMID: 32078001 DOI: 10.1007/s00216-020-02466-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/22/2020] [Accepted: 01/28/2020] [Indexed: 01/03/2023]
Abstract
The course of viral diseases is accompanied by excessive generation of active oxygen metabolites, so the effectiveness of treatment can be improved by combining antiviral and antioxidant therapy. There was a screening of antioxidant properties of 6-nitro-1,2,4-triazoloazine-modified fragments of natural polyphenols (catechol, pyrogallol, phloroglucinol, resorcinol) which are potential dual-action combination preparations. Screening was carried out using various approaches: the study of redox transformations by cyclic voltammetry, determination of antioxidant capacity with oxidizing agents of a radical and non-radical nature by the potentiometric method using potassium hexacyanoferrate (III) and optical methods (the Folin assay and the DPPH assay). It has been established that molecules obtained by conjugation of polyphenols with heterocycles exhibit antioxidant properties. The exception is adducts of triazolodiazines with resorcinol. A decrease in the antioxidant ability of synthesized adducts relative to initial polyphenols has been noted. The antioxidant capacity has been studied at a number of temperatures (25 °C, 37 °C), and the reaction half-life has been determined. The correlation of antioxidant capacity by a potentiometric assay with the Folin assay was R = 0.71; by a potentiometric assay with the DPPH assay was R = 0.67. Leader compounds have been identified. Graphical abstract.
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Novel Potentiometric 2,6-Dichlorophenolindo-phenolate (DCPIP) Membrane-Based Sensors: Assessment of Their Input in the Determination of Total Phenolics and Ascorbic Acid in Beverages. SENSORS 2019; 19:s19092058. [PMID: 31052582 PMCID: PMC6540085 DOI: 10.3390/s19092058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 04/21/2019] [Accepted: 04/26/2019] [Indexed: 12/13/2022]
Abstract
In this work, we demonstrated proof-of-concept for the use of ion-selective electrodes (ISEs) as a promising tool for the assessment of total antioxidant capacity (TAC). Novel membrane sensors for 2,6-dichlorophenolindophenolate (DCPIP) ions were prepared and characterized. The sensors membranes were based on the use of either CuII-neocuproin/2,6-dichlorophenolindo-phenolate ([Cu(Neocup)2][DCPIP]2) (sensor I), or methylene blue/2,6-dichlorophenolindophenolate (MB/DCPIP) (sensor II) ion association complexes in a plasticized PVC matrix. The sensors revealed significantly enhanced response towards DCPIP ions over the concentration range 5.13 × 10−5–1.0 × 10−2 and 5.15 × 10−5–1.0 × 10−2 M at pH 7 with detection limits of 6.3 and 9.2 µg/mL with near-Nernstian slope of −56.2 ± 1.7 and −51.6 ± 2 mV/decade for sensors I and II, respectively. The effects of plasticizers and various foreign common ions were also tested. The sensors showed enhanced selectivity towards DCPIP over many other phenolic and inorganic ions. Long life span, high potential stability, high reproducibility, and fast response were also observed. Method validation was also verified by measuring the detection limit, linearity range, accuracy, precision, repeatability and between-day-variability. The sensors were introduced for direct determination of TAC in fresh and canned juice samples collected from local markets. The obtained results agreed fairly well with the data obtained by the standard method.
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Brainina K, Stozhko N, Bukharinova M, Khamzina E, Vidrevich M. Potentiometric method of plant microsuspensions antioxidant activity determination. Food Chem 2019; 278:653-658. [DOI: 10.1016/j.foodchem.2018.11.098] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 11/20/2018] [Accepted: 11/20/2018] [Indexed: 10/27/2022]
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10
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Quickly verifying the antioxidant contribution of the individual composition in natural antioxidants by HPLC-free radical scavenging detection. Lebensm Wiss Technol 2018. [DOI: 10.1016/j.lwt.2018.06.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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11
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Ivanova AV, Gerasimova EL, Gazizullina ER. New antiradical capacity assay with the use potentiometric method. Anal Chim Acta 2018; 1046:69-76. [PMID: 30482304 DOI: 10.1016/j.aca.2018.09.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 08/16/2018] [Accepted: 09/13/2018] [Indexed: 11/19/2022]
Abstract
For the first time, the dependence of a redox potential change during a reaction of peroxyl radical generation and their interaction with antioxidants was studied. A regular change of a potential is due to oxidation of an antioxidant by initiating peroxyl radicals accompanied by an electron transfer. An original direct method for determining induction periods, inhibition coefficients and an antiradical capacity using the potentiometric method is proposed. Using the proposed approach the induction periods and the inhibition coefficients of various OH, NH, SH containing antioxidants were determined. The antiradical capacity of a herbal extract was studied. A high degree of correlation with a DPPH assay was obtained. RSD results obtained using the proposed approach do not exceed 7%.
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Affiliation(s)
- A V Ivanova
- Ural Federal University Named After the First President of Russia B. N. Yeltsin, Chemical Technological Institute, 19 Ul. Mira, 620002, Ekaterinburg, Russian Federation.
| | - E L Gerasimova
- Ural Federal University Named After the First President of Russia B. N. Yeltsin, Chemical Technological Institute, 19 Ul. Mira, 620002, Ekaterinburg, Russian Federation
| | - E R Gazizullina
- Ural Federal University Named After the First President of Russia B. N. Yeltsin, Chemical Technological Institute, 19 Ul. Mira, 620002, Ekaterinburg, Russian Federation
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Manganaris GA, Goulas V, Mellidou I, Drogoudi P. Antioxidant Phytochemicals in Fresh Produce: Exploitation of Genotype Variation and Advancements in Analytical Protocols. Front Chem 2018; 5:95. [PMID: 29468146 PMCID: PMC5807909 DOI: 10.3389/fchem.2017.00095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 10/24/2017] [Indexed: 01/27/2023] Open
Abstract
Horticultural commodities (fruit and vegetables) are the major dietary source of several bioactive compounds of high nutraceutical value for humans, including polyphenols, carotenoids and vitamins. The aim of the current review was dual. Firstly, toward the eventual enhancement of horticultural crops with bio-functional compounds, the natural genetic variation in antioxidants found in different species and cultivars/genotypes is underlined. Notably, some landraces and/or traditional cultivars have been characterized by substantially higher phytochemical content, i.e., small tomato of Santorini island (cv. "Tomataki Santorinis") possesses appreciably high amounts of ascorbic acid (AsA). The systematic screening of key bioactive compounds in a wide range of germplasm for the identification of promising genotypes and the restoration of key gene fractions from wild species and landraces may help in reducing the loss of agro-biodiversity, creating a healthier "gene pool" as the basis of future adaptation. Toward this direction, large scale comparative studies in different cultivars/genotypes of a given species provide useful insights about the ones of higher nutritional value. Secondly, the advancements in the employment of analytical techniques to determine the antioxidant potential through a convenient, easy and fast way are outlined. Such analytical techniques include electron paramagnetic resonance (EPR) and infrared (IR) spectroscopy, electrochemical, and chemometric methods, flow injection analysis (FIA), optical sensors, and high resolution screening (HRS). Taking into consideration that fruits and vegetables are complex mixtures of water- and lipid-soluble antioxidants, the exploitation of chemometrics to develop "omics" platforms (i.e., metabolomics, foodomics) is a promising tool for researchers to decode and/or predict antioxidant activity of fresh produce. For industry, the use of optical sensors and IR spectroscopy is recommended to estimate the antioxidant activity rapidly and at low cost, although legislation does not allow its correlation with health claims.
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Affiliation(s)
- George A. Manganaris
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Lemesos, Cyprus
| | - Vlasios Goulas
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Lemesos, Cyprus
| | - Ifigeneia Mellidou
- Hellenic Agricultural Organization ‘Demeter’, Institute of Plant Breeding and Genetic Resources, Thessaloniki, Greece
| | - Pavlina Drogoudi
- Hellenic Agricultural Organization ‘Demeter’, Department of Deciduous Fruit Trees, Institute of Plant Breeding and Genetic Resources, Naoussa, Greece
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Ivanova AV, Gerasimova EL, Gazizullina ER, Popova KG, Matern AI. Study of the antioxidant activity and total polyphenol concentration of medicinal plants. JOURNAL OF ANALYTICAL CHEMISTRY 2017. [DOI: 10.1134/s1061934817040049] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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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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Tur’yan YI. Theoretical aspects of the indirect redox potentiometric method for determination of oxidizers and reducers without titration. RUSS J ELECTROCHEM+ 2016. [DOI: 10.1134/s1023193516080115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Turyan I, Khatwani N, Sosic Z, Jayawickreme S, Mandler D. A novel approach for oxidation analysis of therapeutic proteins. Anal Biochem 2016; 494:108-13. [PMID: 26548959 DOI: 10.1016/j.ab.2015.10.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 10/23/2015] [Accepted: 10/28/2015] [Indexed: 11/28/2022]
Abstract
Measuring and monitoring of protein oxidation modifications is important for biopharmaceutical process development and stability assessment during long-term storage. Currently available methods for biomolecules oxidation analysis use time-consuming peptide mapping analysis. Therefore, it is desirable to develop high-throughput methods for advanced process control of protein oxidation. Here, we present a novel approach by which oxidative protein modifications are monitored by an indirect potentiometric method. The method is based on adding an electron mediator, which enhances electron transfer (ET) between all redox species and the electrode surface. Specifically, the procedure involves measuring the sharp change in the open circuit potential (OCP) for the mediator system (redox couple) as a result of its interaction with the oxidized protein species in the solution. Application of Pt and Ag/AgCl microelectrodes allowed for a high-sensitivity protein oxidation analysis. We found that the Ru(NH3)6(2+/3+) redox couple is suitable for measuring the total oxidation of a wide range of therapeutic proteins between 1.1 and 13.6%. Accuracy determined by comparing with the known percentage oxidation of the reference standard showed that percentage oxidation determined for each sample was within ± 20% of the expected percentage oxidation determined by mass spectrometry.
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Affiliation(s)
- Iva Turyan
- Analytical Development, Biogen Idec, Cambridge, MA 02142, USA.
| | - Nikhil Khatwani
- Rare Disease Research Unit (RDRU), Pfizer, Cambridge, MA 02142, USA
| | - Zoran Sosic
- Analytical Development, Biogen Idec, Cambridge, MA 02142, USA
| | | | - Daniel Mandler
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
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Segundo MA, Tóth IV, Magalhães LM, Reis S. Automatic flow injection analysis (FIA) determination of total reducing capacity in serum and urine samples. Methods Mol Biol 2015; 1208:277-84. [PMID: 25323514 DOI: 10.1007/978-1-4939-1441-8_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Automation of total antioxidant capacity assessment can substantially increase the determination throughput, allowing large scale studies and screening experiments. Total reducing capacity evaluation can be implemented under different chemistries, including the CUPRAC-Cupric Ion Reducing Antioxidant Capacity -assay. This assay is based on reduction of Cu(II)-neocuproine complex to highly colored Cu(I)-neocuproine complex by reducing (antioxidant) components of biological samples. In this chapter, we propose an automatic flow injection method for evaluation of total reducing capacity in serum and urine samples, attaining end-point data within 4 min using a kinetic matching strategy.
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Affiliation(s)
- Marcela A Segundo
- REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal,
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LEE GJ, LEE SK, KIM JM, RHEE CK, LEE YK, BRAININA KZ, KAZAKOV Y. Application Feasibility of Antioxidant Activity Evaluation Using Potentiometry in Major Depressive Disorder. ELECTROCHEMISTRY 2014. [DOI: 10.5796/electrochemistry.82.264] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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19
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Tur’yan YI. Indirect redox potentiometric method of determination of the antioxidant number with the use of modified equations. RUSS J ELECTROCHEM+ 2013. [DOI: 10.1134/s1023193513100157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Khuwijitjaru P, Plernjit J, Suaylam B, Samuhaseneetoo S, Pongsawatmanit R, Adachi S. Degradation kinetics of some phenolic compounds in subcritical water and radical scavenging activity of their degradation products. CAN J CHEM ENG 2013. [DOI: 10.1002/cjce.21898] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Pramote Khuwijitjaru
- Department of Food Technology; Faculty of Engineering and Industrial Technology; Silpakorn University; Nakhon Pathom 73000 Thailand
| | - Jiraporn Plernjit
- Department of Food Technology; Faculty of Engineering and Industrial Technology; Silpakorn University; Nakhon Pathom 73000 Thailand
| | - Boonyanuch Suaylam
- Department of Food Technology; Faculty of Engineering and Industrial Technology; Silpakorn University; Nakhon Pathom 73000 Thailand
| | - Suched Samuhaseneetoo
- Department of Food Technology; Faculty of Engineering and Industrial Technology; Silpakorn University; Nakhon Pathom 73000 Thailand
| | - Rungnaphar Pongsawatmanit
- Department of Product Development; Faculty of Agro-Industry; Kasetsart University; Bangkok 10900 Thailand
| | - Shuji Adachi
- Division of Food Science and Biotechnology; Graduate School of Agriculture; Kyoto University; Kyoto 606-8502 Japan
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DPPH Assay Adapted to the FIA System for the Determination of the Antioxidant Capacity of Wines: Optimization of the Conditions Using the Response Surface Methodology. FOOD ANAL METHOD 2013. [DOI: 10.1007/s12161-012-9560-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Martins AC, Bukman L, Vargas AMM, Barizão ÉO, Moraes JCG, Visentainer JV, Almeida VC. The antioxidant activity of teas measured by the FRAP method adapted to the FIA system: optimising the conditions using the response surface methodology. Food Chem 2012; 138:574-80. [PMID: 23265526 DOI: 10.1016/j.foodchem.2012.10.143] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Revised: 10/27/2012] [Accepted: 10/29/2012] [Indexed: 10/27/2022]
Abstract
This study proposes a FRAP assay adapted to FIA system with a merging zones configuration. The FIA system conditions were optimised with the response surface methodology using the central composite rotatable design. The optimisation parameters studied were: the carrier flow rate, the lengths of the sample and reagent loops, and reactor length. The conditions selected in accordance with the results were: carrier flow rate of 1.00 ml/min, length of the loops 18.2 cm and length of the reaction coil 210.1 cm. The detection and quantification limits were, respectively, 28.6 and 86.8 μmol/l Fe(2+), and the precision was 1.27%. The proposed method had an analytical frequency of 30 samples/h and about 95% less volume of FRAP reagent was consumed. The FRAP assay adapted to the FIA system under the optimised conditions was utilised to determine the antioxidant activity of tea samples.
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Affiliation(s)
- Alessandro C Martins
- Department of Chemistry, Universidade Estadual de Maringá, Av. Colombo, 5790, CEP 87020-900 Maringá, Paraná, Brazil
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23
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Antioxidant activity of propolis extracts from Serbia: A polarographic approach. Food Chem Toxicol 2012; 50:3614-8. [DOI: 10.1016/j.fct.2012.07.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 07/06/2012] [Accepted: 07/17/2012] [Indexed: 11/22/2022]
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24
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Tashkhourian J, Ana SFN, Hashemnia S, Hormozi-Nezhad MR. Construction of a modified carbon paste electrode based on TiO2 nanoparticles for the determination of gallic acid. J Solid State Electrochem 2012. [DOI: 10.1007/s10008-012-1860-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Shpigun LK, Zamyatina NN, Shushenachev YV, Kamilova PM. Flow-injection methods for the determination of antioxidant activity based on free-radical processes. JOURNAL OF ANALYTICAL CHEMISTRY 2012. [DOI: 10.1134/s1061934812100085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Souza LP, Calegari F, Zarbin AJG, Marcolino-Junior LH, Bergamini MF. Voltammetric determination of the antioxidant capacity in wine samples using a carbon nanotube modified electrode. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:7620-5. [PMID: 21692474 DOI: 10.1021/jf2005589] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
A direct determination of gallic acid was achieved at a carbon paste electrode modified with carbon nanotubes under differential pulse voltammetry conditions. The values obtained for gallic acid were used to estimate the antioxidant properties of the wine sample based on gallic acid oxidation. The proposed method is based on the gallic acid oxidation process at a modified carbon paste electrode (MCPE) containing 30% (m/m) of carbon nanotubes monitored at 0.35 V versus Ag/AgCl (KCl 3 mol L(-1)). Using the optimized experimental conditions, the calibration curve for gallic acid was linear in the concentration range from 5.0 × 10(-7) to 1.5 × 10(-5) mol L(-1) with a detection limit of 3.0 × 10(-7) mol L(-1). The MCPE was successfully applied for the determination of the antioxidant capacity for red and white wine samples without interference of glucose and ascorbic acid, and the obtained results were compared with the standard spectrophotometric method.
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Affiliation(s)
- Lismery P Souza
- Departamento de Química, Universidade Federal do Paraná, Curitib, PR, Brazil
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27
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Brainina KZ, Gerasimova EL, Kasaikina OT, Ivanova AV. Antioxidant Activity Evaluation Assay Based on Peroxide Radicals Generation and Potentiometric Measurement. ANAL LETT 2011. [DOI: 10.1080/00032719.2010.512687] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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29
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Chen J, Zhao H, Shi Q, Zhang D, Cheng H, Wang X, Sen-Chun Lee F. Rapid screening and identification of the antioxidants inHippocampus japonicusKaup by HPLC-ESI-TOF/MS and on-line ABTS free radical scavenging assay. J Sep Sci 2010; 33:672-7. [DOI: 10.1002/jssc.200900544] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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30
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High throughput chemiluminescence platform for evaluating antioxidative activity of total flavonoid glycosides from plant extracts. Food Chem 2009. [DOI: 10.1016/j.foodchem.2008.11.100] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Electrochemical Determination of the Antioxidant Capacity: The Ceric Reducing/Antioxidant Capacity (CRAC) Assay. ELECTROANAL 2008. [DOI: 10.1002/elan.200704182] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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