1
|
Wang J, Xu Q, Liu J, Kong W, Shi L. Electrostatic Self-Assembly of MXene on Ruthenium Dioxide-Modified Carbon Cloth for Electrochemical Detection of Kaempferol. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301709. [PMID: 37093500 DOI: 10.1002/smll.202301709] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/26/2023] [Indexed: 05/03/2023]
Abstract
A superior composite material consisting of MXene and ruthenium dioxide-modified carbon cloth is synthesized by pulsed laser deposition and electrostatic self-assembly, which is further utilized to construct a class of novel electrochemical (EC) sensors for kaempferol (KA) detection. The carbon-cloth-based electrodes modified by ruthenium dioxide and then MXene are characterized by X-ray diffraction, scanning electron microscope, and X-ray photoemission spectroscopy. The EC process on the modified electrodes is analyzed by cyclic voltammetry, EC impedance spectroscopy, and differential pulse voltammetry. It is found that positively charged RuO2 not only possesses the remarkable electrical conductivity and electrocatalysis activity but also hampers the restacking of MXene, which accordingly enhances the exposure of the active surface area and greatly boosts the electrocatalysis activity of the entire composite. Consequently, this newly developed composite-based EC sensor exhibits a high sensitivity, selectivity, and remarkable stability to detect KA with two linear ranges of 0.06-1 and 1-15 µM. The inferred limit of detection is 0.039 µM via differential pulse voltammetry. More importantly, this novel EC sensor is found to be applicable for detecting KA in practical traditional Chinese medicines.
Collapse
Affiliation(s)
- Jing Wang
- Key Laboratory of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource of Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, P. R. China
| | - Qingbin Xu
- Key Laboratory of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource of Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, P. R. China
| | - Jinxin Liu
- Key Laboratory of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource of Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, P. R. China
| | - Weijun Kong
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, 100069, P. R. China
| | - Linchun Shi
- Key Laboratory of Chinese Medicine Resources Conservation, State Administration of Traditional Chinese Medicine of the People's Republic of China, Engineering Research Center of Chinese Medicine Resource of Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, P. R. China
| |
Collapse
|
2
|
Clarke S, Bosman G, du Toit W, Aleixandre‐Tudo JL. White wine phenolics: current methods of analysis. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:7-25. [PMID: 35821577 PMCID: PMC9796155 DOI: 10.1002/jsfa.12120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 07/07/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
White wine phenolic analyses are less common in the literature than analyses of red wine phenolics. Analytical techniques for white wine phenolic analyses using spectrophotometric, chromatographic, spectroscopic, and electrochemical methods are reported. The interest of research in this area combined with the advances in technology aimed at the winemaking industry are promoting the establishment of novel approaches for identifying, quantifying, and classifying phenolic compounds in white wine. This review article provides an overview of the current research into white wine phenolics through a critical discussion of the analytical methods employed. © 2022 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Sarah Clarke
- South African Grape and Wine Research Institute (SAGWRI), Department of Viticulture and OenologyStellenbosch UniversityStellenboschSouth Africa
| | - Gurthwin Bosman
- Department of PhysicsStellenbosch UniversityStellenboschSouth Africa
| | - Wessel du Toit
- South African Grape and Wine Research Institute (SAGWRI), Department of Viticulture and OenologyStellenbosch UniversityStellenboschSouth Africa
| | - Jose Luis Aleixandre‐Tudo
- South African Grape and Wine Research Institute (SAGWRI), Department of Viticulture and OenologyStellenbosch UniversityStellenboschSouth Africa
- Instituto de Ingeniería de Alimentos para el Desarrollo (IIAD), Departamento de Tecnología de AlimentosUniversidad Politécnica de ValenciaValenciaSpain
| |
Collapse
|
3
|
Congming Li, Zhou Y, Ye B, Xu M. Sensitive Voltammetric Sensor for Evaluation of trans-resveratrol Levels in Wines based on Poly(L-lysine) Modified Electrode. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820010098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
4
|
Valentin L, Barroso LP, Barbosa RM, de Paulo GA, Castro IA. Chemical typicality of South American red wines classified according to their volatile and phenolic compounds using multivariate analysis. Food Chem 2020; 302:125340. [PMID: 31419775 DOI: 10.1016/j.foodchem.2019.125340] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/05/2019] [Accepted: 08/07/2019] [Indexed: 10/26/2022]
Abstract
In this study, 83 wines representating four commercial categories: "Argentinean Malbec", "Brazilian Merlot", "Uruguayan Tannat" and "Chilean Carménère" were analyzed according to their phenolic and volatile compounds. The objective was to identify the chemical compounds that would typify each category. From approximately about 600 peaks obtained by chromatographic techniques, 169 were identified and 53 of them were selected for multivariate statistical analysis. Chilean Carménère was the best discriminated group by the methods applied in our study, followed by Argentinean Malbec. Brazilian Merlot mixed mainly with some Carménère, whileTannat mixed with all wines categories, especially Malbec. In general, Chilean Carménère wines can be characterized by a bluish color, higher amounts of sulphur dioxide, higher content of octanoic acid, isobutanol, ethyl isoamyl succinate and catechin and a smaller amount of quercetin. These data can contribute for further process of authenticity or typification of South American red wines.
Collapse
Affiliation(s)
- Leonardo Valentin
- LADAF, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Av. Lineu Prestes, 580, B14, 05508-900 São Paulo, Brazil
| | - Lucia P Barroso
- Department of Statistics, Institute of Mathematics and Statistics, University of São Paulo, Rua do Matão, 1010, 05508-090 São Paulo, Brazil
| | - Rommel M Barbosa
- Institute of Informatics, Federal University of Goiás, Goiânia-Go, Brazil
| | - Gustavo A de Paulo
- Department of Medicine, Federal University of São Paulo, Rua Botucatu 740, 04023-900 São Paulo, SP Brazil
| | - Inar A Castro
- LADAF, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Av. Lineu Prestes, 580, B14, 05508-900 São Paulo, Brazil.
| |
Collapse
|
5
|
Johnson RT, Lunte CE. A Capillary Electrophoresis Electrospray Ionization-Mass Spectrometry Method using a Borate Background Electrolyte for the Fingerprinting Analysis of Flavonoids in Ginkgo biloba Herbal Supplements. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2016; 16:3325-3332. [PMID: 27688816 PMCID: PMC5036526 DOI: 10.1039/c6ay00463f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A laboratory-built sheath liquid capillary electrophoresis-mass spectrometry interface was used to develop a qualitative method for fingerprinting analysis of 14 structurally similar flavones, flavonols, flavonones, and several representative glycosides in plant samples. The migration order of the flavonoids was dependent on a the number of hydroxyl groups present on the flavonoid B-ring, extent of conjugation, number of glycosidic functionalities, and ability of the flavonoid to form stable borate complexes with the background electrolyte. Parent ion scans of the flavonoids yielded [M-H]-, except for catechol containing flavonoids, which were detected as borate adducts. These adducts can be used diagnostically to determine the presence or absence of catechol groups on unknown polyphenolic compounds. Product ion scans of the flavonoid glycosides and borate adducts typically yielded the deprotonated aglycone fragment as the base peak, which could be used to confirm the base structure of the flavonoid. This method's utility was demonstrated by analyzing flavonoids present in ethanolic extracts of Ginkgo biloba herbal supplements.
Collapse
Affiliation(s)
- Ryan T Johnson
- Department of Chemistry, Ralph N. Adams Institute for Bioanalytical Chemistry, Lawrence, KS 66047 ; University of Kansas, Lawrence, KS 66047
| | - Craig E Lunte
- Department of Chemistry, Ralph N. Adams Institute for Bioanalytical Chemistry, Lawrence, KS 66047 ; University of Kansas, Lawrence, KS 66047
| |
Collapse
|
6
|
Arribas AS, Martínez-Fernández M, Moreno M, Bermejo E, Zapardiel A, Chicharro M. Classification of Spanish white wines using their electrophoretic profiles obtained by capillary zone electrophoresis with amperometric detection. Electrophoresis 2014; 35:1693-700. [DOI: 10.1002/elps.201300638] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 02/18/2014] [Accepted: 02/19/2014] [Indexed: 01/05/2023]
Affiliation(s)
- Alberto Sánchez Arribas
- Departamento de Química Analítica y Análisis Instrumental; Universidad Autónoma de Madrid; Madrid Spain
| | - Marta Martínez-Fernández
- Departamento de Química Analítica y Análisis Instrumental; Universidad Autónoma de Madrid; Madrid Spain
| | - Mónica Moreno
- Departamento de Química Analítica y Análisis Instrumental; Universidad Autónoma de Madrid; Madrid Spain
| | - Esperanza Bermejo
- Departamento de Química Analítica y Análisis Instrumental; Universidad Autónoma de Madrid; Madrid Spain
| | - Antonio Zapardiel
- Departamento de Ciencias Analíticas; Universidad Nacional de Educación a Distancia (UNED); Madrid Spain
| | - Manuel Chicharro
- Departamento de Química Analítica y Análisis Instrumental; Universidad Autónoma de Madrid; Madrid Spain
| |
Collapse
|
7
|
Navarro M, Núñez O, Saurina J, Hernández-Cassou S, Puignou L. Characterization of fruit products by capillary zone electrophoresis and liquid chromatography using the compositional profiles of polyphenols: application to authentication of natural extracts. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:1038-1046. [PMID: 24432703 DOI: 10.1021/jf404776d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Capillary zone electrophoresis (CZE) and high performance liquid chromatography (HPLC) were applied to the authentication of fruit products based on the compositional profiles of polyphenols. Various sample treatments were used to maximize the overall recovery of polyphenols or specific fractions, such as phenolic acids or anthocyanins. The resulting CZE and HPLC data were treated with Principal Component Analysis (PCA) showing that samples were mainly clustered according to the fruit of origin, with cranberry- and grape-based products clearly separated in groups. A possible adulterated cranberry extract was analyzed more deeply by high resolution mass spectrometry (HRMS) in order to identify the presence of A-type proanthocyanidins, which are characteristic and more abundant in cranberry-based products. In accordance with PCA interpretation, HRMS results indicated that the suspicious sample was not a cranberry-based product, allowing us to validate and demonstrate the suitability of both CZE- and HPLC-proposed methods for the characterization of fruit-based products.
Collapse
Affiliation(s)
- Meritxell Navarro
- Department of Analytical Chemistry, University of Barcelona , Martí i Franquès, 1-11, Barcelona E-08028, Spain
| | | | | | | | | |
Collapse
|
8
|
Orlandini S, Gotti R, Furlanetto S. Multivariate optimization of capillary electrophoresis methods: a critical review. J Pharm Biomed Anal 2013; 87:290-307. [PMID: 23669025 DOI: 10.1016/j.jpba.2013.04.014] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 04/12/2013] [Indexed: 11/19/2022]
Abstract
In this article a review on the recent applications of multivariate techniques for optimization of electromigration methods, is presented. Papers published in the period from August 2007 to February 2013, have been taken into consideration. Upon a brief description of each of the involved CE operative modes, the characteristics of the chemometric strategies (type of design, factors and responses) applied to face a number of analytical challenges, are presented. Finally, a critical discussion, giving some practical advices and pointing out the most common issues involved in multivariate set-up of CE methods, is provided.
Collapse
Affiliation(s)
- Serena Orlandini
- Department of Chemistry "U. Schiff", University of Florence, Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | | | | |
Collapse
|
9
|
Király-Véghely Z, Móricz Á, Otta K, Kátay G. Evaluation of hungarian wines for resveratrol by overpressured layer chromatography. JPC-J PLANAR CHROMAT 2013. [DOI: 10.1556/jpc.26.2013.2.10] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
10
|
Assay of Citrus Flavonoids, Troxerutin, and Ascorbic Acid in Food Supplements and Pharmaceuticals by Capillary Zone Electrophoresis. FOOD ANAL METHOD 2013. [DOI: 10.1007/s12161-013-9573-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
11
|
Turkia H, Sirén H, Penttilä M, Pitkänen JP. Capillary electrophoresis for the monitoring of phenolic compounds in bioprocesses. J Chromatogr A 2013; 1278:175-80. [DOI: 10.1016/j.chroma.2013.01.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 12/19/2012] [Accepted: 01/03/2013] [Indexed: 11/15/2022]
|
12
|
Pusch JME, Brondani D, Luza L, Dupont J, Vieira IC. Pt–Pd bimetallic nanoparticles dispersed in an ionic liquid and peroxidase immobilized on nanoclay applied in the development of a biosensor. Analyst 2013; 138:4898-906. [DOI: 10.1039/c3an36800a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
13
|
Gomez FJV, Monasterio RP, Vargas VCS, Silva MF. Analytical characterization of wine and its precursors by capillary electrophoresis. Electrophoresis 2012; 33:2240-52. [PMID: 22887148 DOI: 10.1002/elps.201100595] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The accurate determination of marker chemical species in grape, musts, and wines presents a unique analytical challenge with high impact on diverse areas of knowledge such as health, plant physiology, and economy. Capillary electromigration techniques have emerged as a powerful tool, allowing the separation and identification of highly polar compounds that cannot be easily separated by traditional HPLC methods, providing complementary information and permitting the simultaneous analysis of analytes with different nature in a single run. The main advantage of CE over traditional methods for wine analysis is that in most cases samples require no treatment other than filtration. The purpose of this article is to present a revision on capillary electromigration methods applied to the analysis of wine and its precursors over the last decade. The current state of the art of the topic is evaluated, with special emphasis on the natural compounds that have allowed wine to be considered as a functional food. The most representative revised compounds are phenolic compounds, amino acids, proteins, elemental species, mycotoxins, and organic acids. Finally, a discussion on future trends of the role of capillary electrophoresis in the field of analytical characterization of wines for routine analysis, wine classification, as well as multidisciplinary aspects of the so-called "from soil to glass" chain is presented.
Collapse
Affiliation(s)
- Federico J V Gomez
- Instituto de Biología Agrícola de Mendoza (IBAM-CONICET), Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, Mendoza, Argentina
| | | | | | | |
Collapse
|
14
|
Franquet-Griell H, Checa A, Núñez O, Saurina J, Hernández-Cassou S, Puignou L. Determination of polyphenols in Spanish wines by capillary zone electrophoresis. Application to wine characterization by using chemometrics. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:8340-8349. [PMID: 22866993 DOI: 10.1021/jf302078j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A capillary zone electrophoresis (CZE) method for the simultaneous determination of 20 polyphenols in wine was developed. The separation was performed using fused-silica capillaries of 75 μm i.d. and a 30 mM sodium tretraborate buffer solution at pH 9.2 with 5% isopropanol as a background electrolyte. A capillary voltage of +25 kV with pressure-assisted (3.5 kPa) separation from minute 18 was applied, thus achieving a total analysis time of <25 min. Instrumental quality parameters such as limits of detection (LOD, values between 0.3 and 2.6 mg/L), linearity (r(2) > 0.990), and run-to-run and day-to-day precisions (RSD values lower than 6.5 and 15.7%, respectively) were established. Three different calibration procedures were evaluated for polyphenol quantitation in wines: external calibration using standards prepared in Milli-Q water, standard addition, and pseudomatrix-matched calibration using wine as a matrix. For a 95% confidence level, no statistical differences were observed, in general, between the three calibration methods (p values between 0.11 and 0.84), whereas for some specific polyphenols, such as cinnamic acid, syringic acid, and gallic acid, results were not comparable when external calibration was used. The CZE method using pseudomatrix-matched calibration was then proposed and applied to the analysis of polyphenols in 49 Spanish wines, showing satisfactory results and a wide compositional variation between wines. Electrophoretic profiles and other compositional data (e.g., peak areas of selected peaks) were considered as fingerprints of wines to be used for characterization and classification purposes. The corresponding data were analyzed by principal component analysis (PCA) to extract information on the most significant features contributing to wine discrimination according to their origins. Results showed that a reasonable distribution of wines depending on the elaboration areas was found, tyrosol and gallic, protocatechuic, p-coumaric, and caffeic acids being some representative discriminant compounds.
Collapse
Affiliation(s)
- Helena Franquet-Griell
- Department of Analytical Chemistry, University of Barcelona , Martí i Franquès 1-11, E-08028 Barcelona, Spain
| | | | | | | | | | | |
Collapse
|
15
|
Extraction and on-line concentration of flavonoids in Brassica oleracea by capillary electrophoresis using large volume sample stacking. Food Chem 2012. [DOI: 10.1016/j.foodchem.2012.01.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
16
|
|
17
|
Castro-Puyana M, García-Cañas V, Simó C, Cifuentes A. Recent advances in the application of capillary electromigration methods for food analysis and Foodomics. Electrophoresis 2011; 33:147-67. [DOI: 10.1002/elps.201100385] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2011] [Revised: 08/10/2011] [Accepted: 08/10/2011] [Indexed: 12/17/2022]
|
18
|
Rabanes HR, Guidote AM, Quirino JP. Capillary electrophoresis of natural products: Highlights of the last five years (2006-2010). Electrophoresis 2011; 33:180-95. [DOI: 10.1002/elps.201100223] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Revised: 09/22/2011] [Accepted: 09/22/2011] [Indexed: 12/14/2022]
|
19
|
Paulo L, Domingues F, Queiroz JA, Gallardo E. Development and validation of an analytical method for the determination of trans- and cis-resveratrol in wine: analysis of its contents in 186 Portuguese red wines. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:2157-2168. [PMID: 21361293 DOI: 10.1021/jf105004y] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A simple procedure based on solid-phase extraction and high performance liquid chromatography coupled to diode array detector has been developed and validated for the qualitative and quantitative analysis of cis- and trans-resveratrol in wines. The method was linear from 0.025 (lower limit of quantitation, LLOQ) to 15 μg/mL for trans-resveratrol and from 0.023 (LLOQ) to 0.92 μg/mL for cis-resveratrol, with correlation coefficients higher than 0.99 for both isomers. Intra- and interday precision and accuracy were in conformity with the criteria normally accepted in method validation, that is, CVs inferior to 15% and mean relative errors within a ±14% interval. The extraction presented mean efficiencies close to 100% for both analytes. The validated methodology was applied to 186 Portuguese red wines from different regions, grape varieties and vintage. The results obtained showed that the content of trans-resveratrol in red wines ranged from 0.05 to 10.9 μg/mL, while the concentrations of cis-resveratrol ranged from 0.04 to 8.71 μg/mL.
Collapse
Affiliation(s)
- Luísa Paulo
- CICS-UBI-Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, Av. Infante D. Henrique, 6201-556 Covilhã, Portugal
| | | | | | | |
Collapse
|
20
|
Trombley JD, Loegel TN, Danielson ND, Hagerman AE. Capillary electrophoresis methods for the determination of covalent polyphenol-protein complexes. Anal Bioanal Chem 2011; 401:1523-9. [PMID: 21400190 DOI: 10.1007/s00216-011-4846-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Revised: 02/21/2011] [Accepted: 02/23/2011] [Indexed: 11/27/2022]
Abstract
The bioactivities and bioavailability of plant polyphenols including proanthocyanidins and other catechin derivatives may be affected by covalent reaction between polyphenol and proteins. Both processing conditions and gastrointestinal conditions may promote formation of covalent complexes for polyphenol-rich foods and beverages such as wine. Little is known about covalent reactions between proteins and tannin, because suitable methods for quantitating covalent complexes have not been developed. We established capillary electrophoresis methods that can be used to distinguish free protein from covalently bound protein-polyphenol complexes and to monitor polyphenol oxidation products. The methods are developed using the model protein bovine serum albumin and the representative polyphenol (-)epigallocatechin gallate. By pairing capillaries with different diameters with appropriate alkaline borate buffers, we are able to optimize resolution of either the protein-polyphenol complexes or the polyphenol oxidation products. This analytical method, coupled with purification of the covalent complexes by diethylaminoethyl cellulose chromatography, should facilitate characterization of covalent complexes in polyphenol-rich foods and beverages such as wine.
Collapse
Affiliation(s)
- John D Trombley
- Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056, USA
| | | | | | | |
Collapse
|
21
|
Moreno M, Arribas AS, Bermejo E, Zapardiel A, Chicharro M. Analysis of polyphenols in white wine by CZE with amperometric detection using carbon nanotube-modified electrodes. Electrophoresis 2011; 32:877-83. [DOI: 10.1002/elps.201000498] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Revised: 10/22/2010] [Accepted: 10/22/2010] [Indexed: 01/11/2023]
|
22
|
Ballus CA, Meinhart AD, Bruns RE, Godoy HT. Use of multivariate statistical techniques to optimize the simultaneous separation of 13 phenolic compounds from extra-virgin olive oil by capillary electrophoresis. Talanta 2011; 83:1181-7. [DOI: 10.1016/j.talanta.2010.07.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Revised: 07/01/2010] [Accepted: 07/05/2010] [Indexed: 01/13/2023]
|
23
|
Radovanović BC, Radovanović AN, Souquet JM. Phenolic profile and free radical-scavenging activity of Cabernet Sauvignon wines of different geographical origins from the Balkan region. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2010; 90:2455-2461. [PMID: 20648551 DOI: 10.1002/jsfa.4106] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
BACKGROUND The phenolic profile, determined by the relative proportions of different phenolic compounds, is characteristic for each grape variety and its corresponding wine. The aim of this study was to determine the phenolic and hydroxycinnamate acid, flavan-3-ol and flavonol contents and free radical-scavenging activity of single-cultivar (Cabernet Sauvignon) wines from selected Balkan vineyard regions by spectrophotometric methods and high-performance liquid chromatography with photodiode array and fluorescence detection. RESULTS The contents of phenolic compounds varied depending on the agroclimatic factors and oenological practices of the vineyard region. The antioxidant activity of wine samples was estimated by their ability to scavenge the stable 2,2'-diphenyl-1-picrylhydrazyl free radical (DPPH). All wines showed high DPPH-scavenging activity (70.03-83.53%, mean 73.76%). Significant correlations between catechin (R(2) = 0.8504) and quercetin (R(2) = 0.8488) concentrations and DPPH-scavenging ability of the wines were found. CONCLUSION The concentrations of the main components catechin and quercetin can be used as biochemical markers for the authentication of red grape cultivars and their corresponding single-cultivar wines.
Collapse
Affiliation(s)
- Blaga C Radovanović
- Department of Chemistry, Faculty of Science and Mathematics, Višegradska 33, 18000 Niš, Serbia.
| | | | | |
Collapse
|
24
|
Xie F, Yu A, Cheng Y, Qi R, Li Q, Liu H, Zhang S. Rapid Separation and Determination of Five Phenolic Acids in Tobacco by CE. Chromatographia 2010. [DOI: 10.1365/s10337-010-1781-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
25
|
Application and potential of capillary electroseparation methods to determine antioxidant phenolic compounds from plant food material. J Pharm Biomed Anal 2010; 53:1130-60. [PMID: 20719447 DOI: 10.1016/j.jpba.2010.07.028] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2010] [Revised: 07/09/2010] [Accepted: 07/18/2010] [Indexed: 12/17/2022]
Abstract
Antioxidants are one of the most common active ingredients of nutritionally functional foods which can play an important role in the prevention of oxidation and cellular damage inhibiting or delaying the oxidative processes. In recent years there has been an increased interest in the application of antioxidants to medical treatment as information is constantly gathered linking the development of human diseases to oxidative stress. Within antioxidants, phenolic molecules are an important category of compounds, commonly present in a wide variety of plant food materials. Their correct determination is pivotal nowadays and involves their extraction from the sample, analytical separation, identification, quantification and interpretation of the data. The aim of this review is to provide an overview about all the necessary steps of any analytical procedure to achieve the determination of phenolic compounds from plant matrices, paying particular attention to the application and potential of capillary electroseparation methods. Since it is quite complicated to establish a classification of plant food material, and to structure the current review, we will group the different matrices as follows: fruits, vegetables, herbs, spices and medicinal plants, beverages, vegetable oils, cereals, legumes and nuts and other matrices (including cocoa beans and bee products). At the end of the overview, we include two sections to explain the usefulness of the data about phenols provided by capillary electrophoresis and the newest trends.
Collapse
|