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Liu LM, Liang XJ, Deng F, Xu LF, Hou LL, He DY, Wang ZJ, Huang CF. Determination of the total antioxidant capacity of the Chinese tea based on a novel "peroxidase/zirconium phosphonate"composite electrochemical sensor. ANAL SCI 2024; 40:701-707. [PMID: 38316711 DOI: 10.1007/s44211-023-00502-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 12/25/2023] [Indexed: 02/07/2024]
Abstract
In this work, a novel zirconium phosphonate (ZrPR1R2) was prepared by decorating both the aminoethoxy- group (R1) and the carboxypropyl- group (R2) on the zirconium phosphate layers in order to manipulate further the immobilization of the peroxidase (POD), and an antioxidant biosensor with higher sensitivity was constructed by dropping the POD/ZrPR1R2 composite onto the glassy carbon electrode surface. The activity of the POD/ZrPR1R2 composite was detected by Uv-vis spectra. The direct electrochemical behavior, the electrocatalytic response to dissolved oxygen and hydrogen peroxide, as well as the ability to detect total antioxidant capacity in tea sample were investigated by the methods of cyclic voltammetry. The results indicated that the immobilization of POD in ZrPR1R2 nanosheets matrix enhanced the enzymatic activity, and achieved the fast and direct electron transfer between POD and glassy carbon electrode. Moreover, the POD/ZrPR1R2 composite modified electrode show the electrocatalytic response to hydrogen peroxide in the linear range of 8.8×10-8 to 8.8×10-7 mol L-1, with the detection limit of 3.3×10-8 mol L-1. Attributing to the sensitive response to dissolved oxygen, the total antioxidant capacity can be detected directly in the real tea water by this POD/ZrPR1R2 composite modified electrode.
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Affiliation(s)
- Li-Min Liu
- School of Chemistry and Chemical Engineering, Key Laboratory of Coordination Chemistry of Jiangxi Province, Institute of Applied Chemistry, Jinggangshan University, Ji'an, 343009, Jiangxi, China.
| | - Xin-Jian Liang
- School of Chemistry and Chemical Engineering, Key Laboratory of Coordination Chemistry of Jiangxi Province, Institute of Applied Chemistry, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Fei Deng
- School of Chemistry and Chemical Engineering, Key Laboratory of Coordination Chemistry of Jiangxi Province, Institute of Applied Chemistry, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Ling-Feng Xu
- School of Chemistry and Chemical Engineering, Key Laboratory of Coordination Chemistry of Jiangxi Province, Institute of Applied Chemistry, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Lin-Li Hou
- School of Chemistry and Chemical Engineering, Key Laboratory of Coordination Chemistry of Jiangxi Province, Institute of Applied Chemistry, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - De-Yong He
- School of Chemistry and Chemical Engineering, Key Laboratory of Coordination Chemistry of Jiangxi Province, Institute of Applied Chemistry, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Zhi-Jun Wang
- School of Chemistry and Chemical Engineering, Key Laboratory of Coordination Chemistry of Jiangxi Province, Institute of Applied Chemistry, Jinggangshan University, Ji'an, 343009, Jiangxi, China
| | - Chun-Fang Huang
- School of Chemistry and Chemical Engineering, Key Laboratory of Coordination Chemistry of Jiangxi Province, Institute of Applied Chemistry, Jinggangshan University, Ji'an, 343009, Jiangxi, China
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2
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Liu CW, Tsutsui H. Sample-to-answer sensing technologies for nucleic acid preparation and detection in the field. SLAS Technol 2023; 28:302-323. [PMID: 37302751 DOI: 10.1016/j.slast.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/16/2023] [Accepted: 06/06/2023] [Indexed: 06/13/2023]
Abstract
Efficient sample preparation and accurate disease diagnosis under field conditions are of great importance for the early intervention of diseases in humans, animals, and plants. However, in-field preparation of high-quality nucleic acids from various specimens for downstream analyses, such as amplification and sequencing, is challenging. Thus, developing and adapting sample lysis and nucleic acid extraction protocols suitable for portable formats have drawn significant attention. Similarly, various nucleic acid amplification techniques and detection methods have also been explored. Combining these functions in an integrated platform has resulted in emergent sample-to-answer sensing systems that allow effective disease detection and analyses outside a laboratory. Such devices have a vast potential to improve healthcare in resource-limited settings, low-cost and distributed surveillance of diseases in food and agriculture industries, environmental monitoring, and defense against biological warfare and terrorism. This paper reviews recent advances in portable sample preparation technologies and facile detection methods that have been / or could be adopted into novel sample-to-answer devices. In addition, recent developments and challenges of commercial kits and devices targeting on-site diagnosis of various plant diseases are discussed.
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Affiliation(s)
- Chia-Wei Liu
- Department of Mechanical Engineering, University of California, Riverside, CA 92521, USA
| | - Hideaki Tsutsui
- Department of Mechanical Engineering, University of California, Riverside, CA 92521, USA; Department of Bioengineering, University of California, Riverside, CA 92521, USA.
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3
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Ivanova AV, Markina MG. Portable Device for Potentiometric Determination of Antioxidant Capacity. SENSORS (BASEL, SWITZERLAND) 2023; 23:7845. [PMID: 37765901 PMCID: PMC10536404 DOI: 10.3390/s23187845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/04/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023]
Abstract
For the first time, a prototype of a portable device for the potentiometric determination of antioxidant capacity based on a new measurement principle is proposed. A feature of the approach is the use of an electrochemical microcell with separated spaces and two identical electrodes with immobilized reagents. An antioxidant solution is introduced into one half-cell, and the antioxidants interact with the reagents. The other half-cell contains only reagents. The potential difference between the electrodes is due to the change in the ratio of the oxidized and reduced form of the reagents, which occurs as a result of the reaction with the antioxidants in one of the half-cells and is related to their concentration. The range of linearity of the microcell with immobilized reagents is 40-4000 μM-eq, and the limit of detection is 20 μM-eq. The device was successfully tested in the analysis of standard antioxidant solutions. The recoveries were (92-113)%, and the relative standard deviation did not exceed 15%. A good correlation was found between the data obtained by the approach and the potentiometric method in a macrocell for fruit juice analysis. Pearson's coefficient for the obtained experimental data was 0.9955. The proposed portable device is promising and can be used in field conditions.
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Affiliation(s)
- Alla V. Ivanova
- Chemical Technological Institute, Ural Federal University Named after the First President of Russia B. N. Yeltsin, 19, Mira Str., 620002 Ekaterinburg, Russia;
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4
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Scarsi A, Pedone D, Pompa PP. A multi-line platinum nanozyme-based lateral flow device for the colorimetric evaluation of total antioxidant capacity in different matrices. NANOSCALE ADVANCES 2023; 5:2167-2174. [PMID: 37056622 PMCID: PMC10089119 DOI: 10.1039/d2na00931e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/06/2023] [Indexed: 06/19/2023]
Abstract
The evaluation of Total Antioxidant Capacity (TAC), namely the complete pattern of antioxidant species in a complex medium, is of major interest in many fields ranging from health monitoring to quality control in the food industry. In this framework, point-of-care (POC) testing technologies are a promising diagnostic solution for rapid on-site analyses, unlike laboratory based-assays, which are often limited by centralized analyses, time-consuming and costly procedures, and invasiveness in the case of health diagnostics. In this work, we developed a POC methodology that evaluates TAC in different matrices, exploiting the peroxidase-like properties of 5 nm platinum nanoparticles (PtNPs), combined with a colorimetric paper-based device. Notably, we designed and optimized a multi-line PtNPs-based Lateral Flow Assay (LFA), which relies on three sequential test lines with increasing concentrations of platinum nanozymes, to get a non-invasive, accurate, and fast (10 minutes) colorimetric evaluation of the body TAC in saliva samples. Furthermore, we employed the device as a prototype of a quality control tool in the food industry, for the determination of the TAC in fruit juices.
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Affiliation(s)
- Anna Scarsi
- Nanobiointeractions & Nanodiagnostics, Istituto Italiano di Tecnologia (IIT) Via Morego 30 16163-Genova Italy
- Department of Chemistry and Industrial Chemistry, University of Genova Via Dodecaneso 31 16146-Genova Italy
| | - Deborah Pedone
- Nanobiointeractions & Nanodiagnostics, Istituto Italiano di Tecnologia (IIT) Via Morego 30 16163-Genova Italy
| | - Pier Paolo Pompa
- Nanobiointeractions & Nanodiagnostics, Istituto Italiano di Tecnologia (IIT) Via Morego 30 16163-Genova Italy
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5
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Mauricio López-Téllez J, del Pilar Cañizares-Macías M. A paper-based analytical device with in-situ Carrez pretreatment for the determination of total polyphenolic content and antioxidant capacity. Food Chem 2022; 405:134952. [DOI: 10.1016/j.foodchem.2022.134952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/04/2022] [Accepted: 11/10/2022] [Indexed: 11/15/2022]
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Pérez-Rodríguez M, Cañizares-Macías MDP. Exploring the potential of paper-based analytical sensors for tea geographical origin authentication. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2022; 59:3997-4004. [PMID: 36193362 PMCID: PMC9525549 DOI: 10.1007/s13197-022-05440-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/12/2022] [Accepted: 03/16/2022] [Indexed: 06/16/2023]
Abstract
Tea (Camellia sinensis (L.) Kuntze-surname of German origin) is a popular beverage consumed worldwide due to its health benefits. Its quality depends on measuring features that may discriminate teas from distinct provenances. Protected designation of origin (PDO) is therefore a very useful label for tea quality evaluation. In the present work, antioxidant activity profiles obtained from microfluidic paper-based analytical devices (µPADs) were analyzed by chemometrics to determine the tea geographic origin. Based on the existing literature, we constructed a database containing chemical data from 26 samples and evaluated it by principal component analysis (PCA) coupled to linear discriminant analysis (LDA). Antioxidant activity was an effective LDA predictor for sample discrimination accomplishing accuracies from 75 to 82%. Modeling performance was favored by an external validation method. The best classification model was found using the first nine PCs as input variables. Training samples achieved a perfect success rate, while the test ones were predicted with 83% specificity, 100% sensitivity, and 90% overall accuracy. The modeling robustness was verified by integrating AUC (0.943) from ROC curve. The PCA-LDA approach taken here demonstrated that the teas coming from different countries can be correctly authenticated through µPADs, thus contributing to certificate samples PDO. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s13197-022-05440-1.
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Affiliation(s)
- Michael Pérez-Rodríguez
- Departamento de Química Analítica, Facultad de Química, Universidad Nacional Autónoma de México–UNAM, Av. Universidad 3000, 04510 Mexico city, Mexico
| | - María del Pilar Cañizares-Macías
- Departamento de Química Analítica, Facultad de Química, Universidad Nacional Autónoma de México–UNAM, Av. Universidad 3000, 04510 Mexico city, Mexico
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7
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Colorimetric determination of radical scavenging activity of antioxidants using Fe3O4 magnetic nanoparticles. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2021.103475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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8
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Scroccarello A, Della Pelle F, Rojas D, Ferraro G, Fratini E, Gaggiotti S, Cichelli A, Compagnone D. Metal nanoparticles based lab-on-paper for phenolic compounds evaluation with no sample pretreatment. Application to extra virgin olive oil samples. Anal Chim Acta 2021; 1183:338971. [PMID: 34627526 DOI: 10.1016/j.aca.2021.338971] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/03/2021] [Accepted: 08/18/2021] [Indexed: 12/01/2022]
Abstract
In this work, a low-cost, disposable, and portable lab-on-paper device is proposed to simultaneously quantify total polyphenol content (TPC) and antioxidant capacity (AOC) in 15 min; the assay requires no pre-treatment of the samples. The lab-on-paper device fabrication has been carried out employing a xurography-based benchtop microfabrication technology using low-cost materials as chromatography paper and polymeric sheets. Extra virgin olive oil (EVOO) phenolic compounds' represents a nutritional added value, nevertheless, the high lipidic content hinders their direct and rapid analysis, resulting in an extremely challenging sample. The realized lab-on-paper allows to perform the dual TPC and AOC determination in three simple steps: (i) sample loading, (ii) analytes transport to the analysis spot, and (iii) double colorimetric analysis exploiting the growth of AuNPs and AgNPs on paper mediated by phenolic compounds. Signal acquisition is achieved using a standard digital camera. The dual colorimetric assay is able to detect phenolic compounds in the 25-500 mg L-1 range with limits of detection ≤6 mg L-1 and good reproducibility (RSDs ≤11%). Direct analysis of EVOO samples (n = 30) correlated well (r > 0.92) with conventional spectrophotometric methods for TPC and AOC determination.
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Affiliation(s)
- Annalisa Scroccarello
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Campus "Aurelio Saliceti" Via R. Balzarini 1, 64100, Teramo, Italy
| | - Flavio Della Pelle
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Campus "Aurelio Saliceti" Via R. Balzarini 1, 64100, Teramo, Italy.
| | - Daniel Rojas
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Campus "Aurelio Saliceti" Via R. Balzarini 1, 64100, Teramo, Italy
| | - Giovanni Ferraro
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, Via Della Lastruccia 3-Sesto Fiorentino, I-50019, Florence, Italy
| | - Emiliano Fratini
- Department of Chemistry "Ugo Schiff" and CSGI, University of Florence, Via Della Lastruccia 3-Sesto Fiorentino, I-50019, Florence, Italy
| | - Sara Gaggiotti
- Department of Science, University of Pescara-Chieti, Viale Pindaro 42, 65127, Pescara, Italy
| | - Angelo Cichelli
- Department of Science, University of Pescara-Chieti, Viale Pindaro 42, 65127, Pescara, Italy
| | - Dario Compagnone
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Campus "Aurelio Saliceti" Via R. Balzarini 1, 64100, Teramo, Italy.
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9
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Morosanova MA, Chaikun KV, Morosanova EI. Silica and Silica-Titania Xerogels Doped with Iron(III) for Total Antioxidant Capacity Determination. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2019. [PMID: 33920521 PMCID: PMC8073238 DOI: 10.3390/ma14082019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 12/22/2022]
Abstract
In order to design a sensor material for total antioxidant capacity determination we have prepared silica and silica-titania xerogels doped with iron(III) and modified with 1,10-phenanthroline. Titanium(IV) tetraethoxyde content in the precursors (titanium(IV) tetraethoxyde and tetraethyl orthosilicate) mixtures has been varied from 0 to 12.5% vol. Iron(III) concentrations in sol has been varied from 1 to 100 mM. The increase of titanium(IV) content has led to a decrease in BET surface area and average pore diameter and an increase of micropore surface area and volume, which has resulted in better iron(III) retention in the xerogels. Iron(III), immobilized in the xerogel matrix, retains its ability to form complexes with 1,10-phenanthroline and to be reduced to iron(II). Static capacities for 1,10-phenanthroline have been determined for all the iron(III) doped xerogels (0.207 mmol/g-0.239 mmol/g) and they are not dependent on the iron(III) content. Sensor materials-xerogels doped with iron(III) and modified with 1,10-phenanthroline-have been used for antioxidants (catechol, gallic and ascorbic acids, and sulphite) solid phase spectrophotometric determination. Limits of detection for catechol, gallic and ascorbic acids, and sulphite equal 7.8 × 10-6 M, 5.4 × 10-6 M, 1.2 × 10-5 M, and 3.1 × 10-4 M, respectively. The increase of titanium(IV) content in sensor material has led to an increase of the reaction rate and the sensitivity of determination. Proposed sensor materials have been applied for total antioxidant capacity (in gallic acid equivalents) determination in soft beverages, have demonstrated high stability, and can be stored up to 6 months at room temperature.
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Affiliation(s)
- Maria A. Morosanova
- Analytical Chemistry Division, Chemistry Department, Lomonosov Moscow State University, 119234 Moscow, Russia;
| | - Ksenia V. Chaikun
- Department of Materials Science, Lomonosov Moscow State University, 119234 Moscow, Russia;
| | - Elena I. Morosanova
- Analytical Chemistry Division, Chemistry Department, Lomonosov Moscow State University, 119234 Moscow, Russia;
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10
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Li L, Li S, Yu X, Chen Z. Visual detection of multiple antioxidants based on three chloroauric acid/Au-Ag nanocubes. Mikrochim Acta 2021; 188:122. [PMID: 33694068 DOI: 10.1007/s00604-021-04774-5] [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: 12/24/2020] [Accepted: 02/22/2021] [Indexed: 10/21/2022]
Abstract
A colorimetric sensing method is described for discrimination of multiple antioxidants based on core-shell Au@Ag nanocubes (NCs). In order to extract data-rich colorimetric responses from the sensor array, three different concentrations of chloroaurate acid (HAuCl4) were employed as sensing elements. Interestingly, Au3+ ions can be reduced to different valence states (i.e., Au(0) and Au(I)) by different antioxidants, and thus effectively inhibit the oxidation etching process of Au@Ag NCs by Au(III) ions to varying extents, generating diverse colorimetric responses (color and absorbance). This enables identification of the six antioxidants at 10 nM via linear discriminant analysis (LDA) with relative standard deviation (RSD) of 2.52% (n = 3). The discrimination ability of the sensor array was further evaluated in antioxidant binary and multicomponent mixtures. Remarkably, identification of these six antioxidants spiked in urine was realized with 100% of accuracy. Schematic presentation of colorimetric assay for antioxidants based on three chloroauric acid/Au-Ag nanocubes.
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Affiliation(s)
- Li Li
- School of Chemistry and Materials Engineering, Xinxiang University, Xinxiang, 453003, China.
| | - Siqun Li
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Xinjie Yu
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Zhengbo Chen
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
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11
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Nejadmansouri M, Majdinasab M, Nunes GS, Marty JL. An Overview of Optical and Electrochemical Sensors and Biosensors for Analysis of Antioxidants in Food during the Last 5 Years. SENSORS (BASEL, SWITZERLAND) 2021; 21:1176. [PMID: 33562374 PMCID: PMC7915219 DOI: 10.3390/s21041176] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/02/2021] [Accepted: 02/03/2021] [Indexed: 02/07/2023]
Abstract
Antioxidants are a group of healthy substances which are useful to human health because of their antihistaminic, anticancer, anti-inflammatory activity and inhibitory effect on the formation and the actions of reactive oxygen species. Generally, they are phenolic complexes present in plant-derived foods. Due to the valuable nutritional role of these mixtures, analysis and determining their amount in food is of particular importance. In recent years, many attempts have been made to supply uncomplicated, rapid, economical and user-friendly analytical approaches for the on-site detection and antioxidant capacity (AOC) determination of food antioxidants. In this regards, sensors and biosensors are regarded as favorable tools for antioxidant analysis because of their special features like high sensitivity, rapid detection time, ease of use, and ease of miniaturization. In this review, current five-year progresses in different types of optical and electrochemical sensors/biosensors for the analysis of antioxidants in foods are discussed and evaluated well. Moreover, advantages, limitations, and the potential for practical applications of each type of sensors/biosensors have been discussed. This review aims to prove how sensors/biosensors represent reliable alternatives to conventional methods for antioxidant analysis.
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Affiliation(s)
- Maryam Nejadmansouri
- Department of Food Science & Technology, School of Agriculture, Shiraz University, Shiraz 71441-65186, Iran
| | - Marjan Majdinasab
- Department of Food Science & Technology, School of Agriculture, Shiraz University, Shiraz 71441-65186, Iran
| | - Gilvanda S Nunes
- Pesticide Residue Analysis Center, Federal University of Maranhao, 65080-040 Sao Luis, Brazil
| | - Jean Louis Marty
- Faculty of Sciences, University of Perpignan Via Domitia, 52 Avenue Paul Alduy, 66860 Perpignan CEDEX 9, France
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12
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Sachdev A, Samanta P, Kumar V, Garima, Kandhal K, Matai I. PMAA-CeO 2 nanoparticle-based paper microfluidic device with customized image processing software for antioxidant assay. Anal Bioanal Chem 2020; 412:8197-8209. [PMID: 32995939 DOI: 10.1007/s00216-020-02960-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/10/2020] [Accepted: 09/18/2020] [Indexed: 12/21/2022]
Abstract
Despite recent advancements in the field of microfluidic paper-based analytical devices (μPADs), a key challenge remains in developing a simple and efficient μPAD with customized imaging capabilities for antioxidant assays. In the present study, we report a facile approach for μPAD fabrication through the application of transparent nail paint leading to creation of hydrophobic barriers and well-defined channels. The resultant μPADs were then characterized through scanning electron microscopy and contact angle measurements. The resolution and functional features of the fabricated μPAD were amenable to the intended assay. The μPAD's impregnated poly(methacrylic acid) (PMAA)-coated cerium oxide (CeO2) nanoparticles oxidized the 3,3',5,5'-tetramethylbenzidine (TMB) leading to the formation of a blue-colored charge-transfer complex. The addition of different antioxidant standard solutions resulted in a reduction in the blue color in a dose-dependent manner which could be observed visually. The color intensity of the PMAA-CeO2 nanoparticle@TMB oxidation product was inversely proportional to the antioxidant concentration and was measured using customized in-house MATLAB-based image processing software. Importantly, PMAA-CeO2 nanoparticle-based μPADs demonstrated good analytical characteristics and were able to be stored for long periods without any loss of activity. Moreover, potential interferents did not pose any threat to the colorimetric signal read-out for determination of antioxidant activity. The developed method was further applied for the assessment of antioxidant activity in a variety of tea samples and performed satisfactorily in comparison with a commonly used antioxidant detection method. Collectively, the developed μPAD-based platform holds great potential as a low-cost, convenient, portable and reliable method for pursuing various on-site antioxidant assays. Graphical Abstract.
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Affiliation(s)
- Abhay Sachdev
- Ubiquitous Analytical Techniques Division, CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Chandigarh, 160030, India. .,Academy of Scientific and Innovative Research (AcSIR-CSIO), Chandigarh, 160030, India.
| | - Pradipta Samanta
- Ubiquitous Analytical Techniques Division, CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Chandigarh, 160030, India.,Academy of Scientific and Innovative Research (AcSIR-CSIO), Chandigarh, 160030, India
| | - Vijayesh Kumar
- Ubiquitous Analytical Techniques Division, CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Chandigarh, 160030, India
| | - Garima
- Ubiquitous Analytical Techniques Division, CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Chandigarh, 160030, India.,Academy of Scientific and Innovative Research (AcSIR-CSIO), Chandigarh, 160030, India
| | - Karina Kandhal
- Ubiquitous Analytical Techniques Division, CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Chandigarh, 160030, India
| | - Ishita Matai
- Ubiquitous Analytical Techniques Division, CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Chandigarh, 160030, India. .,Academy of Scientific and Innovative Research (AcSIR-CSIO), Chandigarh, 160030, India.
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13
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El-Shahawi MS, Mujawar LH, Khoj MA, Vattamkandathil S. Rapid and sensitive determination of Pb2+ in water using chromogenic reagent patterned on nail polish modified filter paper. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104448] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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14
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Buking S, Suedomi Y, Nacapricha D, Kaneta T. Characterization of Pieces of Paper That Form Reagent Containers for Use as Portable Analytical Devices. ACS OMEGA 2019; 4:15249-15254. [PMID: 31552371 PMCID: PMC6751694 DOI: 10.1021/acsomega.9b02226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 08/21/2019] [Indexed: 06/10/2023]
Abstract
Reagent-deposited pieces of paper were characterized by the use of a compact conductometer, a compact pH sensor, and a conventional spectrophotometer to assess their suitability for use as reagent containers. The pieces of paper were fabricated by wax printing to form a limited hydrophilic area to which a consistent volume of an aqueous reagent could be added. The pieces of paper without the reagent increased the conductivity of water gradually because of the release of sodium salts, whereas pH of NaOH decreased because of the acidity of the functional groups in the paper. Three reagents, sulfamic acid as an acid, Na2CO3 as a base, and BaCl2 as a metal salt, were deposited on the pieces of paper to evaluate their ability to release from the pieces of paper. Sulfamic acid and Na2CO3 were released in quantities of 58 and 73% into water after 420 s, whereas 100% of BaCl2 was released after 480 s. The conductometric titrations of NaOH, HCl, and Na2SO4, and the spectrophotometry of Fe2+ were examined using the pieces of paper that contained sulfamic acid, Na2CO3, BaCl2, and 1,10-phenanthroline. Titrations using the pieces of paper suggested that the reagents were quantitatively released into the titrant, which resulted in a linear relationship between the endpoints and the equivalent points. In 120 s of soaking time, 60-70% of the reagents were released. The spectrophotometric measurements of Fe2+ indicated that when an excess amount of the reagents was deposited onto the pieces of paper, they nonetheless sufficiently fulfilled the role of a reagent container.
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Affiliation(s)
- Supatana Buking
- Flow
Innovation-Research for Science and Technology Laboratories
(FIRST Labs) and Department of Chemistry and Center of Excellence for Innovation in
Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Yusuke Suedomi
- Department
of Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
| | - Duangjai Nacapricha
- Flow
Innovation-Research for Science and Technology Laboratories
(FIRST Labs) and Department of Chemistry and Center of Excellence for Innovation in
Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Takashi Kaneta
- Department
of Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
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15
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Boonpoempoon T, Wonsawat W, Kaneta T. Long-term stabilization of hydrogen peroxide by poly(vinyl alcohol) on paper-based analytical devices. Sci Rep 2019; 9:12951. [PMID: 31506489 PMCID: PMC6736875 DOI: 10.1038/s41598-019-49393-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 08/23/2019] [Indexed: 11/29/2022] Open
Abstract
Stabilizing reagents that can be deposited onto paper is an important issue for researchers who depend on paper-based analytical devices (PADs), because long-term stability of the devices is essential in point-of-care testing. Here, we found that poly(vinyl alcohol) (PVA) would stabilize hydrogen peroxide placed on a paper substrate following exposure to air. Horseradish peroxidase was employed as a sample in colorimetric measurements of PADs after hydrogen peroxide and 3,3',5,5'-tetramethylbenzidine were deposited as substrates in an enzymatic reaction. The addition of PVA to hydrogen peroxide significantly suppressed its degradation. Concentrations of PVA that ranged from 0.5 to 2%, increased the duration of the stability of hydrogen peroxide, and the results for a PVA concentration of 1% approximated those of 2% PVA. Storage of the PADs at 4 °C in a refrigerator extended the stability of the hydrogen peroxide containing 2% PVA by as much as 30 days. The stability of hydrogen peroxide without PVA was degraded after one day under room temperature.
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Affiliation(s)
- Tuchpongpuch Boonpoempoon
- Department of Chemistry, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, Thailand
| | - Wanida Wonsawat
- Department of Chemistry, Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, Thailand
| | - Takashi Kaneta
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.
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16
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Taprab N, Sameenoi Y. Rapid screening of formaldehyde in food using paper-based titration. Anal Chim Acta 2019; 1069:66-72. [PMID: 31084742 DOI: 10.1016/j.aca.2019.03.063] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 01/02/2023]
Abstract
A simple paper-based analytical device (PAD) has been developed to rapidly detect formaldehyde (FA) in food samples. The analysis was based on sulfite assay where FA reacted with excess sulfite to generate sodium hydroxide (NaOH) that was quantified on PAD using acid-base titration. The PAD consisted of a central sample zone connected to ten reaction and detection zones. All detection zones were pre-deposited with polyethylene glycol (PEG) with phenolphthalein (Phph) as an indicator. Reaction zones contained different amounts of the titrant, potassium hydrogen phthalate (KHP). On flowing into reaction zones, the NaOH product reacts with KHP to reach the end point. In the presence of excess NaOH, unneutralized NaOH reached the detection zone and caused Phph color change from colorless to pink. In contrast, when NaOH was less than KHP, the detection zone remained colorless. Concentration of FA can be quantified from the number of pink detection zone(s) which were correlated with a known amount of pre-deposited KHP on the PAD. Total analytical process could be completed within 5 min. Areas of each zone and amounts of reagents added to the corresponding zones of the PAD were optimized to obtain reproducible and accurate results. PAD gave ranges of FA detection of 100-1000 mg L-1 with an interval of 100 mg L-1 and the limit of detection (LOD) was 100 mg L-1. PADs were stable for up to a month under dark and cold conditions. Analysis of FA in food samples using PAD agreed well with those from the classical sulfite assay.
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Affiliation(s)
- Natchanon Taprab
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chon Buri, 20131, Thailand
| | - Yupaporn Sameenoi
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chon Buri, 20131, Thailand; Sensor Innovation Research Unit (SIRU), Burapha University, Chon Buri, 20131, Thailand.
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17
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Puangbanlang C, Sirivibulkovit K, Nacapricha D, Sameenoi Y. A paper-based device for simultaneous determination of antioxidant activity and total phenolic content in food samples. Talanta 2019; 198:542-549. [PMID: 30876597 DOI: 10.1016/j.talanta.2019.02.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/07/2019] [Accepted: 02/11/2019] [Indexed: 10/27/2022]
Abstract
We report the first use of a paper-based device as a simple, low-cost and rapid detection platform for simultaneous determination of antioxidant activity and total phenolic content in food samples. Two antioxidant activity assays including 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulphonate) radical cation (ABTS) assay and cupric reducing antioxidant capacity (CUPRAC) assay and one total phenolic content assay, Folin Ciocaltue reagent (FC) assay were simultaneously employed as a proof-of-concept. The device composed of a central sample zone connected to four pretreatment zones and consecutive detection zones to accommodate all three assays and a sample blank measurement. The analysis was achieved by dropping the samples onto the sample zone to flow to the pretreatment and detection zones containing the stored reagents for each antioxidant assay making the color change that was measured using imageJ software. Assay optimization including key reagent concentrations, reaction time, and surface modification were carried out to obtain sensitive and wide linear rage analyses. Various antioxidant standards were then evaluated to determine the analytical features of the method. The paper-based assays were successfully applied to detect antioxidant activity and total phenolic content in 10 beverage samples with similar gallic acid equivalent (GAE) values to those obtained from traditional assays at a 95% confidence interval. Moreover, the GAE values of the samples obtained from three assay analyses were well correlated to each other with relatively high Pearson's correlation coefficients. These results indicated that the assays gave accurate results and are suitable for simultaneous analysis of antioxidant activity and total phenolic content in real samples.
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Affiliation(s)
- Chanoknan Puangbanlang
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chon Buri 20131, Thailand
| | - Kitima Sirivibulkovit
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chon Buri 20131, Thailand
| | - Duangjai Nacapricha
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Yupaporn Sameenoi
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University, Chon Buri 20131, Thailand; Sensor Innovation Research Unit (SIRU), Burapha University, Chon Buri 20131, Thailand.
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18
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Nishat S, Awan FR, Bajwa SZ. Nanoparticle-based Point of Care Immunoassays for in vitro Biomedical Diagnostics. ANAL SCI 2019; 35:123-131. [PMID: 30224569 DOI: 10.2116/analsci.18r001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In resource-limited settings, the availability of medical practitioners and early diagnostic facilities are inadequate relative to the population size and disease burden. To address cost and delayed time issues in diagnostics, strip-based immunoassays, e.g. dipstick, lateral flow assay (LFA) and microfluidic paper-based analytical devices (microPADs), have emerged as promising alternatives to conventional diagnostic approaches. These assays rely on chromogenic agents to detect disease biomarkers. However, limited specificity and sensitivity have motivated scientists to improve the efficiency of these assays by conjugating chromogenic agents with nanoparticles for enhanced qualitative and quantitative output. Various nanomaterials, which include metallic, magnetic and luminescent nanoparticles, are being used in the fabrication of biosensors to detect and quantify biomolecules and disease biomarkers. This review discusses some of the principles and applications of such nanoparticle-based point of care biosensors in biomedical diagnosis.
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Affiliation(s)
- Sumaira Nishat
- National Institute for Biotechnology and Genetic Engineering (NIBGE).,akistan Institute of Engineering and Applied Sciences (PIEAS).,Department of Computer Science, University of Agriculture
| | - Fazli Rabbi Awan
- National Institute for Biotechnology and Genetic Engineering (NIBGE).,akistan Institute of Engineering and Applied Sciences (PIEAS)
| | - Sadia Zafar Bajwa
- National Institute for Biotechnology and Genetic Engineering (NIBGE).,akistan Institute of Engineering and Applied Sciences (PIEAS)
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19
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Paper-based analytical devices prepared with polycaprolactone printing and their application in the activity determination of mulberry extracts. J Pharm Biomed Anal 2018; 161:28-34. [DOI: 10.1016/j.jpba.2018.08.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/06/2018] [Accepted: 08/09/2018] [Indexed: 11/21/2022]
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20
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SIRIVIBULKOVIT K, NOUANTHAVONG S, SAMEENOI Y. Paper-based DPPH Assay for Antioxidant Activity Analysis. ANAL SCI 2018; 34:795-800. [DOI: 10.2116/analsci.18p014] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Kitima SIRIVIBULKOVIT
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University
| | - Souksanh NOUANTHAVONG
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University
- Savannakhet Teacher Training College
| | - Yupaporn SAMEENOI
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University
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