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Phytochemical and antioxidant activities of methanolic extract of Lawsonia inermis L. Bark. CURRENT ISSUES IN PHARMACY AND MEDICAL SCIENCES 2020. [DOI: 10.2478/cipms-2020-0024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Many diseases are associated with oxidative stress are caused by free radicals. Current research has been directed towards finding naturally occurring antioxidants of plant origin. The aim of the present study was to evaluate the in vitro antioxidant activities of methanolic extract of Lawsonia inermis L. bark (MELIB). The present study was carried out for determination of qualitative, quantitative phytochemical and in vitro antioxidant activity for scavenging of free radical DPPH, superoxide radical scavenging and lipid peroxidation. The bark extract is a rich source of secondary metabolites like flavonoids at a rutin equivalent 73.43±0.26%, polyphenol at a gallic acid equivalent 84.70±0.43%, tannins at a tannic acid equivalent 88.75±0.14% and terpenoids at a linalool equivalent 68.13±0.31. MELIB showed free radicals scavenging capacity by way of the DPPH method (6.93±0.51 to 62.63±0.10% inhibition), the superoxide radical scavenging method (1.82±0.41 to 57.11±0.18% inhibition) and the ferric chloride induced lipid peroxidation method (9.87±0.33 to 80.32±0.82% inhibition). The results obtained in the present study indicate that MELIB can be a potential source of natural antioxidants due to the presence of flavonoids, polyphenols, tannins and terpenoids.
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Forzato C, Vida V, Berti F. Biosensors and Sensing Systems for Rapid Analysis of Phenolic Compounds from Plants: A Comprehensive Review. BIOSENSORS 2020; 10:E105. [PMID: 32846992 PMCID: PMC7557957 DOI: 10.3390/bios10090105] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/18/2020] [Accepted: 08/21/2020] [Indexed: 01/18/2023]
Abstract
Phenolic compounds are secondary metabolites frequently found in plants that exhibit many different effects on human health. Because of the relevant bioactivity, their identification and quantification in agro-food matrices as well as in biological samples are a fundamental issue in the field of quality control of food and food supplements, and clinical analysis. In this review, a critical selection of sensors and biosensors for rapid and selective detection of phenolic compounds is discussed. Sensors based on electrochemistry, photoelectrochemistry, fluorescence, and colorimetry are discussed including devices with or without specific recognition elements, such as biomolecules, enzymes and molecularly imprinted materials. Systems that have been tested on real matrices are prevalently considered but also techniques that show potential development in the field.
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Affiliation(s)
| | | | - Federico Berti
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Trieste, via Giorgieri 1, 34127 Trieste, Italy; (C.F.); (V.V.)
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Lopez JC, Zon MA, Fernández H, Granero AM. Development of an enzymatic biosensor to determine eugenol in dental samples. Talanta 2020; 210:120647. [PMID: 31987210 DOI: 10.1016/j.talanta.2019.120647] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/12/2019] [Accepted: 12/13/2019] [Indexed: 11/17/2022]
Abstract
A GCE/CRGO-βCD's/ADA-SPE/AuNPs biosensor was successfully developed to determine eugenol in dental samples. The optimal conditions to construct the biosensor were obtained from an experimental design based on the response surfaces methodology. The GCE/CRGO-βCD/ADA-SPE/AuNPs biosensor exhibited a very good analytical performance for the quantification of eugenol. Thus, it shows a linear range between 1.3 × 10-8 and 1 × 10-5 mol L-1, with a sensitivity of (5.3 ± 0.3) x 10-3 A mol-1 L. The limits of detection and quantification were 4 × 10-9 mol L-1 and 1.3 × 10-8 mol L-1, respectively. Biosensors had an intraday and inter day reproducibility of 5% and 8%, respectively. The repeatability was of 3%, and the stability was 21 days (a decrease of 30% in current responses was observed after the fourth week). Recovery studies were performed in order to validate the proposed method. Recovery percentages were between 94 and 108%. A value of the apparent Michaellis-Menten constant, KMapp, of 3.1 × 10-6 mol L-1 was obtained using both Lineweaver-Burk and Eadi-Hofstee methods.
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Affiliation(s)
- Jimena Claudia Lopez
- Departamento de Química, Grupo GEANA, Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS), Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal N(o) 3, 5800, Río Cuarto, Argentina.
| | - María Alicia Zon
- Departamento de Química, Grupo GEANA, Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS), Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal N(o) 3, 5800, Río Cuarto, Argentina.
| | - Héctor Fernández
- Departamento de Química, Grupo GEANA, Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS), Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal N(o) 3, 5800, Río Cuarto, Argentina.
| | - Adrian Marcelo Granero
- Departamento de Química, Grupo GEANA, Instituto para el Desarrollo Agroindustrial y de la Salud (IDAS), Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal N(o) 3, 5800, Río Cuarto, Argentina.
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Gómez‐Monedero B, Jiménez‐Pérez R, González‐Sánchez MI, Almagro L, Valero E, Compton RG. Iodine‐mediated Oxidation of Resveratrol. An Electroanalytical Study Using Platinum and Glassy Carbon Electrodes. ELECTROANAL 2019. [DOI: 10.1002/elan.201900104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Beatriz Gómez‐Monedero
- Department of Physical Chemistry, Higher Technical School of Industrial EngineeringUniversity of Castilla-La Mancha Campus Universitario s/n 02071 Albacete Spain
| | - Rebeca Jiménez‐Pérez
- Department of Physical Chemistry, Higher Technical School of Industrial EngineeringUniversity of Castilla-La Mancha Campus Universitario s/n 02071 Albacete Spain
| | - María Isabel González‐Sánchez
- Department of Physical Chemistry, Higher Technical School of Industrial EngineeringUniversity of Castilla-La Mancha Campus Universitario s/n 02071 Albacete Spain
| | - Loreno Almagro
- Department of Plant Biology, Faculty of BiologyUniversity of Murcia Campus de Espinardo 30100 Murcia Spain
| | - Edelmira Valero
- Department of Physical Chemistry, Higher Technical School of Industrial EngineeringUniversity of Castilla-La Mancha Campus Universitario s/n 02071 Albacete Spain
| | - Richard G. Compton
- Department of Chemistry, Physical and Theoretical Chemistry LaboratoryUniversity of Oxford South Parks Road Oxford OX1 3QZ United Kingdom
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Lopez JC, Zon MA, Fernández H, Granero AM, Robledo SN. Determination of kinetic parameters of the enzymatic reaction between soybean peroxidase and natural antioxidants using chemometric tools. Food Chem 2019; 275:161-168. [PMID: 30724183 DOI: 10.1016/j.foodchem.2018.08.145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 08/29/2018] [Accepted: 08/31/2018] [Indexed: 11/23/2022]
Abstract
The oxidation of eugenol, isoeugenol and vanillin natural antioxidants catalyzed by the soybean peroxidase enzyme was studied using uv-vis spectroscopy. An experimental design was used to optimize the different variables. The multivariate curve resolution method was used to obtain the profiles of antioxidant absorbance's as a function of time due to uv-vis absorption bands of both antioxidants and the enzymatic reaction product/s show a strong overlap. From these results, apparent Michaelis-Menten constants as well as the kinetic parameters k1 and k3 involved in the catalytic cycle of peroxidases were calculated. The antioxidant apparent acidity constants were also determined at different pH's from uv-vis spectrophotometric measurements. Values of k1 were (0.6 ± 0.1) × 105 M-1 s-1, (2.0 ± 0.2) × 105 M-1 s-1 and (7.0 ± 0.5) × 106 M-1 s-1 and k3 (4.0 ± 0.2) × 105 M-1 s-1, (6.0 ± 0.6) × 105 M-1 s-1 and (6.0 ± 0.9) × 106 M-1 s-1 for eugenol, isoeugenol and vanillin, respectively.
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Affiliation(s)
- Jimena Claudia Lopez
- Grupo de Electroanalítica (GEANA), Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal N° 3, 5800 Río Cuarto, Argentina.
| | - María Alicia Zon
- Grupo de Electroanalítica (GEANA), Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal N° 3, 5800 Río Cuarto, Argentina.
| | - Héctor Fernández
- Grupo de Electroanalítica (GEANA), Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal N° 3, 5800 Río Cuarto, Argentina.
| | - Adrian Marcelo Granero
- Grupo de Electroanalítica (GEANA), Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal N° 3, 5800 Río Cuarto, Argentina.
| | - Sebastián Noel Robledo
- Grupo de Electroanalítica (GEANA), Departamento de Química, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal N° 3, 5800 Río Cuarto, Argentina; Departamento de Tecnología Química, Facultad de Ingeniería, Universidad Nacional de Río Cuarto, Agencia Postal N° 3, 5800 Río Cuarto, Argentina.
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Liu L, Zhou Y, Kang Y, Huang H, Li C, Xu M, Ye B. Electrochemical Evaluation of trans-Resveratrol Levels in Red Wine Based on the Interaction between Resveratrol and Graphene. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2017; 2017:5749025. [PMID: 28819581 PMCID: PMC5551533 DOI: 10.1155/2017/5749025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 06/15/2017] [Indexed: 06/07/2023]
Abstract
trans-Resveratrol is often considered as one of the quality standards of red wine, and the development of a sensitive and reliable method for monitoring the trans-resveratrol levels in red wine is an urgent requirement for the quality control. Here, a novel voltammetric approach was described for probing trans-resveratrol using a graphene-modified glassy carbon (GC) electrode. The proposed electrode was prepared by one-step electrodeposition of reduced graphene oxide (ERGO) at a GC electrode. Compared with the bare GC electrode, the introduced graphene film on the electrode surface dramatically improved the sensitivity of the sensor response due to the π-π interaction between the graphene and trans-resveratrol. The developed sensor exhibited low detection limit of 0.2 μM with wide linear range of 0.8-32 μM and high stability. For the analysis of trans-resveratrol in red wine, the high anti-interference ability and the good recoveries indicated the great potential for practical applications.
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Affiliation(s)
- Lantao Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Yanli Zhou
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Yiyu Kang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Haihong Huang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Congming Li
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Maotian Xu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Baoxian Ye
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
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Electrochemical Biosensors for the Determination of Toxic Substances Related to Food Safety Developed in South America: Mycotoxins and Herbicides. CHEMOSENSORS 2017. [DOI: 10.3390/chemosensors5030023] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Canbay E, Akyilmaz E. Design of a multiwalled carbon nanotube–Nafion–cysteamine modified tyrosinase biosensor and its adaptation of dopamine determination. Anal Biochem 2014; 444:8-15. [DOI: 10.1016/j.ab.2013.09.019] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 09/14/2013] [Accepted: 09/19/2013] [Indexed: 11/25/2022]
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Development of an amperometric biosensor based on peroxidases to quantify citrinin in rice samples. Bioelectrochemistry 2013; 91:37-43. [DOI: 10.1016/j.bioelechem.2012.12.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 12/19/2012] [Accepted: 12/19/2012] [Indexed: 11/18/2022]
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References. Anal Chem 2012. [DOI: 10.1201/b11478-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Perrotta PR, Vettorazzi NR, Arévalo FJ, Granero AM, Chulze SN, Zón MA, Fernández H. Electrochemical Studies of Ochratoxin A Mycotoxin at Gold Electrodes Modified with Cysteamine Self-Assembled Monolayers. Its Ultrasensitive Quantification in Red Wine Samples. ELECTROANAL 2011. [DOI: 10.1002/elan.201100094] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Granero AM, Fernández H, Agostini E, Zón MA. An amperometric biosensor based on peroxidases from Brassica napus for the determination of the total polyphenolic content in wine and tea samples. Talanta 2010; 83:249-55. [DOI: 10.1016/j.talanta.2010.09.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 09/10/2010] [Accepted: 09/14/2010] [Indexed: 10/19/2022]
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Xiang H, Li W. Electrochemical Sensor fortrans-Resveratrol Determination Based on Indium Tin Oxide Electrode Modified with Molecularly Imprinted Self-Assembled Films. ELECTROANAL 2009. [DOI: 10.1002/elan.200804488] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Electrochemical sensors and biosensors based on heterogeneous carbon materials. MONATSHEFTE FUR CHEMIE 2009. [DOI: 10.1007/s00706-009-0131-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Current awareness in phytochemical analysis. PHYTOCHEMICAL ANALYSIS : PCA 2008; 19:568-575. [PMID: 18988322 DOI: 10.1002/pca.1041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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