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Katiyar D, Manish, Pal RS, Bansal P, Kumar A, Prakash S. Electrochemical Sensors for Detection of Phytomolecules: A Mechanistic Approach. Comb Chem High Throughput Screen 2024; 27:1887-1899. [PMID: 38279749 DOI: 10.2174/0113862073282883231218145941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 01/28/2024]
Abstract
High demand and ongoing technological advancements have created a market for sensors that is both varied and rapidly evolving. Bioactive compounds are separated systematically to conduct an in-depth investigation, allowing for the profiling or fingerprinting of different Plantae kingdoms. The profiling field is significant in elucidating the complex interplay of plant traits, attributes, and environmental factors. Flexible technology advancements have enabled the creation of highly sensitive sensors for the non-destructive detection of molecules. Additionally, very specialized integrated systems that will allow multiplexed detection by integrating many hybrid approaches have been developed, but these systems are highly laborious and expensive. Electrochemical sensors, on the other hand, are a viable option because of their ability to accomplish exact compound detection via efficient signal transduction. However, this has not been investigated because of some obstacles to learning minimum metabolites' fundamentals and nonredox properties. This article reviews the electrochemical basis of plants, contrasting it with more conventional techniques and offering both positive and negative perspectives on the topic. Because few studies have been devoted to the concept of merging the domains, we've expanded the scope of this work by including pertinent non-phytochemical reports for better report comparison.
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Affiliation(s)
- Deepti Katiyar
- KIET School of Pharmacy, KIET Group of Institutions, Delhi-NCR, Ghaziabad, 201206, Uttar Pradesh, India
| | - Manish
- Department of Electronics and Communication Engineering, ABES Engineering College, 19th KM Stone, NH-09 Ghaziabad, 201009, Uttar Pradesh, India
| | - Rashmi Saxena Pal
- Department of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Priya Bansal
- KIET School of Pharmacy, KIET Group of Institutions, Delhi-NCR, Ghaziabad, 201206, Uttar Pradesh, India
| | - Abhishek Kumar
- KIET School of Pharmacy, KIET Group of Institutions, Delhi-NCR, Ghaziabad, 201206, Uttar Pradesh, India
| | - Surya Prakash
- KIET School of Pharmacy, KIET Group of Institutions, Delhi-NCR, Ghaziabad, 201206, Uttar Pradesh, India
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2
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Ansari MA. Nanotechnology in Food and Plant Science: Challenges and Future Prospects. PLANTS (BASEL, SWITZERLAND) 2023; 12:2565. [PMID: 37447126 DOI: 10.3390/plants12132565] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 06/24/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023]
Abstract
Globally, food safety and security are receiving a lot of attention to ensure a steady supply of nutrient-rich and safe food. Nanotechnology is used in a wide range of technical processes, including the development of new materials and the enhancement of food safety and security. Nanomaterials are used to improve the protective effects of food and help detect microbial contamination, hazardous chemicals, and pesticides. Nanosensors are used to detect pathogens and allergens in food. Food processing is enhanced further by nanocapsulation, which allows for the delivery of bioactive compounds, increases food bioavailability, and extends food shelf life. Various forms of nanomaterials have been developed to improve food safety and enhance agricultural productivity, including nanometals, nanorods, nanofilms, nanotubes, nanofibers, nanolayers, and nanosheets. Such materials are used for developing nanofertilizers, nanopesticides, and nanomaterials to induce plant growth, genome modification, and transgene expression in plants. Nanomaterials have antimicrobial properties, promote plants' innate immunity, and act as delivery agents for active ingredients. Nanocomposites offer good acid-resistance capabilities, effective recyclability, significant thermostability, and enhanced storage stability. Nanomaterials have been extensively used for the targeted delivery and release of genes and proteins into plant cells. In this review article, we discuss the role of nanotechnology in food safety and security. Furthermore, we include a partial literature survey on the use of nanotechnology in food packaging, food safety, food preservation using smart nanocarriers, the detection of food-borne pathogens and allergens using nanosensors, and crop growth and yield improvement; however, extensive research on nanotechnology is warranted.
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Affiliation(s)
- Mohammad Azam Ansari
- Department of Epidemic Disease Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
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3
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Electrochemical Profiling of Plants. ELECTROCHEM 2022. [DOI: 10.3390/electrochem3030030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The profiling, or fingerprinting, of distinct varieties of the Plantae kingdom is based on the bioactive ingredients, which are systematically segregated to perform their detailed analysis. The secondary products portray a pivotal role in defining the ecophysiology of distinct plant species. There is a crucial role of the profiling domain in understanding the various features, characteristics, and conditions related to plants. Advancements in variable technologies have contributed to the development of highly specific sensors for the non-invasive detection of molecules. Furthermore, many hyphenated techniques have led to the development of highly specific integrated systems that allow multiplexed detection, such as high-performance liquid chromatography, gas chromatography, etc., which are quite cumbersome and un-economical. In contrast, electrochemical sensors are a promising alternative which are capable of performing the precise recognition of compounds due to efficient signal transduction. However, due to a few bottlenecks in understanding the principles and non-redox features of minimal metabolites, the area has not been explored. This review article provides an insight to the electrochemical basis of plants in comparison with other traditional approaches and with necessary positive and negative outlooks. Studies consisting of the idea of merging the fields are limited; hence, relevant non-phytochemical reports are included for a better comparison of reports to broaden the scope of this work.
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Wang MY, Zhang P, Zhang YZ, Yuan XY, Chen RX. Chemical fingerprinting, quantification, and antioxidant activity evaluation of Osmanthus fragrans (Thunb.) Lour. Flowers by UPLC-ECD. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2022. [DOI: 10.1080/10942912.2022.2057530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ming-Yang Wang
- Department of Analytical Chemistry of College of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Ping Zhang
- Analysis and Testing Center of Life Science institute, Zunyi Medical University, Zunyi, China
| | - Yu-Zhu Zhang
- Department of Analytical Chemistry of College of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Xiao-Yan Yuan
- Department of Analytical Chemistry of College of Pharmacy, Zunyi Medical University, Zunyi, China
| | - Rong-Xiang Chen
- Analysis and Testing Center of Life Science institute, Zunyi Medical University, Zunyi, China
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5
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Optimal stimulation of Houttuynia cordata herbal extract as electron shuttle for bioenergy extraction in microbial fuel cells. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.09.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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6
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Mustafa F, Andreescu S. Nanotechnology-based approaches for food sensing and packaging applications. RSC Adv 2020; 10:19309-19336. [PMID: 35515480 PMCID: PMC9054203 DOI: 10.1039/d0ra01084g] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/22/2020] [Indexed: 12/22/2022] Open
Abstract
The rapid advancement of nanotechnology has provided opportunities for the development of new sensing and food packaging solutions, addressing long-standing challenges in the food sector to extend shelf-life, reduce waste, assess safety and improve the quality of food. Nanomaterials can be used to reinforce mechanical strength, enhance gas barrier properties, increase water repellence, and provide antimicrobial and scavenging activity to food packaging. They can be incorporated in chemical and biological sensors enabling the design of rapid and sensitive devices to assess freshness, and detect allergens, toxins or pathogenic contaminants. This review summarizes recent studies on the use of nanomaterials in the development of: (1) (bio)sensing technologies for detection of nutritional and non-nutritional components, antioxidants, adulterants and toxicants, (2) methods to improve the barrier and mechanical properties of food packaging, and (3) active functional packaging. The environmental, health and safety implications of nanomaterials in the food sector, along with an overview of regulation and consumer perception is also provided.
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Affiliation(s)
- Fatima Mustafa
- Department of Chemistry and Biomolecular Science, Clarkson University Potsdam New York 13699-5810 USA
| | - Silvana Andreescu
- Department of Chemistry and Biomolecular Science, Clarkson University Potsdam New York 13699-5810 USA
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Tang P, Tang X, Mei S, Xie Y, Liu L, Ren L. Electrochemical antioxidant screening and evaluation based on guanine and chitosan immobilized MoS2 nanosheet modified glassy carbon electrode (guanine/CS/MoS2/GCE). OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractIn this study, an electrochemical biosensor based on guanine and chitosan immobilized MoS2 nanosheet modified glassy carbon electrode (guanine/CS/MoS2/GCE) was developed and employed for antioxidant screening and antioxidant capacity evaluation. The oxidation peak current of guanine was improved and nearly tripled after modifications of chitosan and MoS2 nanosheet. The immobilized guanine could be damaged by hydroxyl radicals generated in Fenton solution. However, in the presence of antioxidants, the guanine was protected and the oxidation peak current of guanine increased. This process mimics the mechanism of antioxidant protection in human body. The factors affecting preparation of sensor and detection of antioxidant capacity were optimized. At the optimum conditions, the guanine/CS/MoS2/GCE showed wide linear range, low detection limit, satisfactory reproducibility and stability for detection. Ascorbic acid was used as a model antioxidant to evaluate the antioxidant capacity. A good linearity was observed with a correlation coefficient of 0.9959 in the concentrations between 0.5 and 4.0 mg L-1. The antioxidant capacities of three flavonoids were also tested and the rank of antioxidant capacities was ascorbic acid (51.84%), quercetin (45.82%), fisetin (34.39%) and catechin (16.99%). Due to the rapid measurement and low cost, this sensor could provide an available sensing platform for antioxidant screening and evaluation.
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Affiliation(s)
- Ping Tang
- School of Environmental Science and Engineering, Hubei Polytechnic University, Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Huangshi, 435003, China
| | - Xiaosheng Tang
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization & National Demonstration Center for Experimental Biology Education & College of Life Sciences, Hubei Normal University, Huangshi, 435002, China
| | - Shiyong Mei
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha410205, China
| | - Yixi Xie
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Liangliang Liu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha410205, China
| | - Licheng Ren
- Department of Burn and Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha410083, China
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8
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Ye Y, Ji J, Sun Z, Shen P, Sun X. Recent advances in electrochemical biosensors for antioxidant analysis in foodstuff. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115718] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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9
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Luo T, Wang X, Qian Y, Liu J, Li L, Liu J, Chen J. Direct and sensitive detection of sulfide ions based on one-step synthesis of ionic liquid functionalized fluorescent carbon nanoribbons. RSC Adv 2019; 9:37484-37490. [PMID: 35542298 PMCID: PMC9075588 DOI: 10.1039/c9ra07701d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 11/04/2019] [Indexed: 12/13/2022] Open
Abstract
Despite widely reported fluorescence sensors for cations, direct detection of anions is nevertheless still rare. In this work, ionic liquid-functionalized fluorescent carbon nanoribbons (IL-CNRs) are one-step synthesized and serve as the fluorescent probes for direct and sensitive detection of sulfide ions (S2−). The IL-CNRs are synthesized based on electrochemical exfoliation of graphite rods in a water-IL biphasic system. The as-prepared IL-CNRs exhibit uniform structure, high crystallinity, strong blue fluorescence (absolute photoluminescence quantum yield of 11.4%), and unique selectivity towards S2−. Based on the fluorescence quenching of IL-CNRs by S2−, a fluorescence sensor is developed for direct, rapid and sensitive detection of S2− in the range of 100 nM to 1 μM and 1–300 μM with a low detection limit (LOD, 85 nM). Moreover, detection of S2− in a real sample (tap water) is also demonstrated. Sensitive detection of sulfide ions is realized based on one-step synthesis of ionic liquid functionalized fluorescent carbon nanoribbons.![]()
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Affiliation(s)
- Tao Luo
- Affiliated Tumor Hospital of Guangxi Medical University 71 Hedi Road Nanning 530021 PR China
| | - Xiaobo Wang
- Affiliated Tumor Hospital of Guangxi Medical University 71 Hedi Road Nanning 530021 PR China
| | - Yuting Qian
- Department of Chemistry, Zhejiang Sci-Tech University 928 Second Avenue, Xiasha Higher Education Zone Hangzhou 310018 PR China
| | - Junjie Liu
- Affiliated Tumor Hospital of Guangxi Medical University 71 Hedi Road Nanning 530021 PR China
| | - Lequn Li
- Affiliated Tumor Hospital of Guangxi Medical University 71 Hedi Road Nanning 530021 PR China
| | - Jiyang Liu
- Department of Chemistry, Zhejiang Sci-Tech University 928 Second Avenue, Xiasha Higher Education Zone Hangzhou 310018 PR China
| | - Jie Chen
- Affiliated Tumor Hospital of Guangxi Medical University 71 Hedi Road Nanning 530021 PR China
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10
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Durazzo A, Lucarini M, Novellino E, Daliu P, Santini A. Fruit-based juices: Focus on antioxidant properties-Study approach and update. Phytother Res 2019; 33:1754-1769. [PMID: 31155809 DOI: 10.1002/ptr.6380] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 04/03/2019] [Accepted: 04/08/2019] [Indexed: 12/30/2022]
Abstract
This paper proposes a perspective literature review of the antioxidant properties in fruit-based juices. The total antioxidant properties due to compounds such as carotenoids, polyphenolic compounds, flavonoids, and tannins as well as the assessment of interactions between natural active compounds and other food matrix components can be seen as the first step in the study of potential health benefits of fruit-based juices. A brief summary is given on the significance of antioxidant properties of fruit juices, the conventional methods for antioxidant activity evaluation, and on the newly emerged sample analysis and data interpretation strategies, that is, chemometric analysis based on spectroscopic data. The effect of fruit processing techniques and the addition of ingredients on the antioxidant properties of fruit-based juices are also discussed.
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Affiliation(s)
| | | | - Ettore Novellino
- Department of Pharmacy, University of Napoli Federico II, Naples, Italy
| | - Patricia Daliu
- Department of Pharmacy, University of Napoli Federico II, Naples, Italy
| | - Antonello Santini
- Department of Pharmacy, University of Napoli Federico II, Naples, Italy
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11
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Hoyos-Arbeláez J, Ramírez García G, Arévalo FJ, Vázquez M, Fernández H, Gutiérrez Granados S. Electrochemical determination of mangiferin using glassy carbon electrodes modified with carbonaceous nanomaterials. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.11.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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12
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Cyclic voltammetry to evaluate the antioxidant potential in winemaking by-products. Talanta 2017; 165:211-215. [DOI: 10.1016/j.talanta.2016.12.058] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/14/2016] [Accepted: 12/22/2016] [Indexed: 12/22/2022]
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13
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Uzunboy S, Çekiç SD, Eksin E, Erdem A, Apak R. CUPRAC colorimetric and electroanalytical methods determining antioxidant activity based on prevention of oxidative DNA damage. Anal Biochem 2017; 518:69-77. [DOI: 10.1016/j.ab.2016.10.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 10/08/2016] [Accepted: 10/31/2016] [Indexed: 10/20/2022]
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14
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Electrochemical methods as a tool for determining the antioxidant capacity of food and beverages: A review. Food Chem 2016; 221:1371-1381. [PMID: 27979102 DOI: 10.1016/j.foodchem.2016.11.017] [Citation(s) in RCA: 132] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 11/02/2016] [Accepted: 11/02/2016] [Indexed: 11/23/2022]
Abstract
The growing interest in functional foods had led to the use of analytical techniques to quantify some properties, among which is the antioxidant capacity (AC). In order to identify and quantify this capacity, some techniques are used, based on synthetic radicals capture; and they are monitored by UV-vis spectrophotometry. Electrochemical techniques are emerging as alternatives, given some of the disadvantages faced by spectrophotometric methods such as the use of expensive reagent not environmentally friendly, undefined reaction time, long sample pretreatment, and low precision and sensitivity. This review focuses on the four most commonly used electrochemical techniques (cyclic voltammetry, differential pulse voltammetry, square wave voltammetry and chronoamperometry). Some of the applications to determine AC in foods and beverages are presented, as well as the correlation between both spectrophotometric and electrochemical techniques that have been reported.
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15
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Yan F, Su B. Tailoring Molecular Permeability of Nanochannel-Micelle Membranes for Electrochemical Analysis of Antioxidants in Fruit Juices without Sample Treatment. Anal Chem 2016; 88:11001-11006. [DOI: 10.1021/acs.analchem.6b02823] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Fei Yan
- Institute of Analytical Chemistry,
Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Bin Su
- Institute of Analytical Chemistry,
Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310058, China
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16
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Guo Z, Liu X, Liu Y, Wu G, Lu X. Constructing a novel 8-hydroxy-2'-deoxyguanosine electrochemical sensor and application in evaluating the oxidative damages of DNA and guanine. Biosens Bioelectron 2016; 86:671-676. [PMID: 27471158 DOI: 10.1016/j.bios.2016.07.033] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 06/29/2016] [Accepted: 07/10/2016] [Indexed: 12/11/2022]
Abstract
8-Hydroxy-2'-deoxyguanosine (8-OHdG) is commonly identified as a biomarker of oxidative DNA damage. In this work, a novel and facile 8-OHdG sensor was developed based on the multi-walled carbon nanotubes (MWCNTs) modified glassy carbon electrode (GCE). It exhibited good electrochemical responses toward the oxidation of 8-OHdG, and the linear ranges were 5.63×10(-8)-6.08×10(-6)M and 6.08×10(-6)-1.64×10(-5)M, with the detection limit of 1.88×10(-8)M (S/N=3). Moreover, the fabricated sensor was applied for the determination of 8-OHdG generated from damaged DNA and guanine, respectively, and the oxidation currents of 8-OHdG increased along with the damaged DNA and guanine within certain concentrations. These results could be used to evaluate the DNA damage, and provide useful information on diagnosing diseases caused by mutation and deficiency of the immunity system.
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Affiliation(s)
- Zhipan Guo
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070 China
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070 China.
| | - Yuelin Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070 China
| | - Guofan Wu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070 China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070 China.
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Jain R, Karolia P, Sinha A, Farooq. Highly Sensitive and Selective Polyaniline Nanofiber-Based Voltammetric Sensor for the Quantification of Tinidazole. ADVANCES IN POLYMER TECHNOLOGY 2016. [DOI: 10.1002/adv.21694] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Rajeev Jain
- School of Studies in Chemistry; Jiwaji University; Gwalior 474 011 India
| | - Priyanka Karolia
- School of Studies in Chemistry; Jiwaji University; Gwalior 474 011 India
| | - Ankita Sinha
- School of Studies in Chemistry; Jiwaji University; Gwalior 474 011 India
| | - Farooq
- School of Studies in Chemistry; Jiwaji University; Gwalior 474 011 India
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18
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DNA-based sensor against nitrite oxide radical: Evaluation of total antioxidant capacity in beverages. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2015.12.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Doménech-Carbó A, Gavara R, Hernández-Muñoz P, Domínguez I. Contact probe voltammetry for in situ monitoring of the reactivity of phenolic tomato (Solanum lycopersicum L.) compounds with ROS. Talanta 2015; 144:1207-15. [DOI: 10.1016/j.talanta.2015.07.092] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 07/27/2015] [Accepted: 07/31/2015] [Indexed: 10/23/2022]
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20
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Gualandi I, Ferraro L, Matteucci P, Tonelli D. Assessment of the Antioxidant Capacity of Standard Compounds and Fruit Juices by a Newly Developed Electrochemical Method: Comparative Study with Results from Other Analytical Methods. ELECTROANAL 2015. [DOI: 10.1002/elan.201500076] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Idowu SO. Computational Antioxidant Capacity Simulation (CAOCS): A Novel Framework of Antioxidant Capacity Profiling. CHEMICAL PRODUCT AND PROCESS MODELING 2014. [DOI: 10.1515/cppm-2013-0041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Inconsistent ranking is a well-known drawback of antioxidant capacity (AOC) profiling methodologies that use free-radical species as oxidant. This problem leads to assay results that are not biorelevant. Linear free energy relationships (LFER) theory predicts proton transfer (PT) kinetics as a surrogate for biorelevant hydrogen atom transfer (HAT) kinetics. Computational antioxidant capacity simulation (CAOCS), based on real-time proton transfer kinetics modeling (PTKM) of polyphenols and phenol-like small molecules, inspired a novel AOC profiling methodology.
Kinetic data acquired by incremental addition of resorcinol to an oxidized probe (phenol red), was fitted to mono-exponential decay equation (MED). Absorbance decay data from strongly antioxidant phenol-like molecules (e.g. ascorbic acid) and a new chromogenic probe (phenolphthalein) was fitted to MED and bi-exponential decay equation. The preferred model and corresponding best-fit rate constant (Kptt) was identified by comparison of fits, using Akaike’s Information Criterion (AICc).
Photometric phenolphthalein assay (PPA)-derived metric was normalized with photometric phenol red assay (PPRA) results by using a function developed from proton concentration differential between phenolphthalein and phenol red, with respect to decay threshold to plateau (assay endpoint) interval. pKa dependence of the CAOCS’ metric is a signature of structure–function relationships, and hence, biorelevance.
It is shown, unambiguously, that a combination of two phenolic probe molecules, an analytical system devoid of free radicals, and statistical identification of preferred exponential decay fit to PT kinetics data, constitutes a novel algorithm for AOC profiling of polyphenols and phenol-like molecules. This methodology holds a promise of utility in quality assurance of dietary supplements.
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22
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Martín A, Hernández-Ferrer J, Vázquez L, Martínez MT, Escarpa A. Controlled chemistry of tailored graphene nanoribbons for electrochemistry: a rational approach to optimizing molecule detection. RSC Adv 2014. [DOI: 10.1039/c3ra44235g] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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