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Berríos D, Nahuelcura J, González F, Peña F, Cornejo P, Pérez-Navarro J, Gómez-Alonso S, Ruiz A. The Biosynthesis, Accumulation of Phenolic Compounds and Antioxidant Response in Lactuca sativa L. Plants Inoculated with a Biofertilizer Based on Soil Yeast and Iron Nanoparticles. PLANTS (BASEL, SWITZERLAND) 2024; 13:388. [PMID: 38337921 PMCID: PMC10856853 DOI: 10.3390/plants13030388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024]
Abstract
Lettuce is a vegetable that contributes vitamins, minerals, fibre, phenolic compounds and antioxidants to the human diet. In the search for improving production conditions and crop health, the use of microorganisms with plant growth-promoting capabilities, such as soil yeasts (PGPY), in conjunction with nanotechnology could offer sustainable development of agroecosystems. This study evaluated the synthesis of health-promoting bioactive compounds in lettuce under the application of soil yeast and an iron nanoparticle (NP-Fe2O3) encapsulated in alginate beads. Two yeast strains, Candida guillermondii and Rhodotorula mucilaginosa, and a consortium of both yeasts were used in the presence and absence of Fe2O3-NPs. Phenolic compounds were identified and quantified via HPLC-ESI-Q-ToF and antioxidant activity. Ten phenolic compounds were identified, highlighting the chicoric acid isomer and two quercetin glycosides with high concentrations of up to 100 µg g-1 in treatments with C. guillermondii. Treatments with R. mucilaginosa and NPs-Fe2O3 presented an increase in antioxidant activity, mainly in TEAC, CUPRAC and DPPH activities in leaves, with significant differences between treatments. Therefore, the use of encapsulated soil yeasts is a viable alternative for application in vegetables to improve the biosynthesis and accumulation of phenolic compounds in lettuce and other crops.
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Affiliation(s)
- Daniela Berríos
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Temuco 4811230, Chile
- Programa de Doctorado en Ciencias Agroalimentarias y Medioambiente, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Temuco 4811230, Chile
| | - Javiera Nahuelcura
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Temuco 4811230, Chile
| | - Felipe González
- Programa de Doctorado en Ciencias Mención Biología Celular y Molecular Aplicada, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Temuco 4811230, Chile
| | - Fabiola Peña
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Temuco 4811230, Chile
- Programa de Doctorado en Ciencias Agroalimentarias y Medioambiente, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Temuco 4811230, Chile
| | - Pablo Cornejo
- Escuela de Agronomía, Facultad de Ciencias Agronómica y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota 2260000, Chile
- Centro Regional de Investigación e Innovación para la Sostenibilidad de la Agricultura y los Territorios Rurales, CERES, La Palma, Quillota 2260000, Chile
| | - José Pérez-Navarro
- Instituto Regional de Investigación Científica Aplicada, Universidad de Castilla-La Mancha, 13001 Ciudad Real, Spain
| | - Sergio Gómez-Alonso
- Instituto Regional de Investigación Científica Aplicada, Universidad de Castilla-La Mancha, 13001 Ciudad Real, Spain
| | - Antonieta Ruiz
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Temuco 4811230, Chile
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Newair EF, Al-Anazi A, Garcia F. Oxidation of Wine Polyphenols by Electrochemical Means in the Presence of Glutathione. Antioxidants (Basel) 2023; 12:1891. [PMID: 37891969 PMCID: PMC10604864 DOI: 10.3390/antiox12101891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/13/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
The oxidation of wine may be beneficial or harmful to its quality. On the one hand, controlled oxidation can lead to the development of desirable sensory characteristics for red wine, such as enhanced color stability. Alternatively, oxidation can lead to white wine browning and a decrease in fruity aromas, and the development of an off flavor and wine polyphenols are also involved. The presence of glutathione (GSH) can help mitigate the negative effects of oxidation by acting as a protective antioxidant. In order to better understand the antioxidant role played by GSH, wine polyphenols oxidation experiments by electrochemical means in the presence of GSH were carried out. The oxidation behavior of polyphenols representing different phenolic classes commonly found in wines, including protocatechuic acid (PCA), caffeic acid (CAF), epicatechin (EC), and rutin (Ru), was investigated using cyclic voltammetry and bulk electrolysis. We identified the oxidation products and reaction pathways of these polyphenols using ultra-high-performance liquid chromatography coupled with mass spectrometry (UPLC-MS), in both the absence and the presence of glutathione (GSH). UPLC-MS was utilized to demonstrate that, in the presence of glutathione (GSH), the four molecules were subjected to electrochemical oxidation, resulting in the formation of mono- and bi-glutathione conjugates. A two-electron oxidation process combined with the removal of two protons is the first step in transforming polyphenol molecules. As a result, the corresponding quinone is formed. The quinone can then be reduced back to its original form by glutathione (GSH), or it can interact further with GSH to produce mono- and bi-glutathione conjugates. These results contribute to understanding and predicting the oxidative degradation pathway of polyphenols in wine. Understanding this process seems important for winemakers to control and optimize the sensory characteristics of their wines.
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Affiliation(s)
- Emad F. Newair
- Sciences for Oenology (SPO), Montpellier University, National Research Institute for Agriculture, Food and the Environment (INRAE), Institut Agro, F-34060 Montpellier, France
| | - Abdulaziz Al-Anazi
- Department of Chemical Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
| | - François Garcia
- Sciences for Oenology (SPO), Montpellier University, National Research Institute for Agriculture, Food and the Environment (INRAE), Institut Agro, F-34060 Montpellier, France
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Peña F, Valencia S, Tereucán G, Nahuelcura J, Jiménez-Aspee F, Cornejo P, Ruiz A. Bioactive Compounds and Antioxidant Activity in the Fruit of Rosehip ( Rosa canina L. and Rosa rubiginosa L.). Molecules 2023; 28:molecules28083544. [PMID: 37110778 PMCID: PMC10144129 DOI: 10.3390/molecules28083544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/09/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Rosehips (Rosa spp., Rosaceae) are wild rose bushes with more than 100 species. Its fruits vary in colour and size, depending on the species, and are recognised for their nutritional characteristics. Ten samples of Rosa canina L. and Rosa rubiginosa L. fruits were collected at different geographical points from Southern Chile. Nutrients such as crude protein and minerals and functional properties such as phenolic compounds, ascorbic acid, and also antioxidant activities were evaluated by HPLC-DAD-ESI-MS/MS. The results revealed a high content of bioactive compounds, primarily ascorbic acid (6.0 to 8.2 mg g-1 fresh weight (FW)), flavonols (427.9 ± 0.4 μg g-1 FW) and antioxidant activity. We established a relationship between the antioxidant activity using Trolox equivalent antioxidant capacity (TEAC), cupric reducing antioxidant capacity (CUPRAC) and 2,2-diphenyl radical (DPPH) methods and the concentration of uncoloured compounds, such as flavonols and catechin. This antioxidant activity was primarily associated with the samples from Gorbea, Lonquimay, Loncoche, and Villarrica localities, and all of them were of the species Rosa rubiginosa L. The results here obtained represent novel information of rosehip fruits. In this sense, the reported information about compounds and antioxidant activities in rosehip fruits allowed us to continue new lines of research in relation to the potential formulation of new functional foods and also in the treatment and/or prevention of some diseases.
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Affiliation(s)
- Fabiola Peña
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile
- Programa de Doctorado en Ciencias Agroalimentarias y Medioambiente, Facultad de Ciencias Agropecuarias y Forestales, Universidad de La Frontera, Región de la Araucanía, Temuco 4811230, Chile
| | - Sebastián Valencia
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile
| | - Gonzalo Tereucán
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile
| | - Javiera Nahuelcura
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile
| | - Felipe Jiménez-Aspee
- Department of Food Biofunctionality (140b), Institute of Nutritional Sciences, University of Hohenheim, Garbenstr. 28, D-70599 Stuttgart, Germany
| | - Pablo Cornejo
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota 2260000, Chile
| | - Antonieta Ruiz
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Avda. Francisco Salazar 01145, Temuco 4811230, Chile
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Fouché B, Turner S, Gorham R, Stephenson EJ, Gutbier S, Elson JL, García-Beltrán O, Van Der Westhuizen FH, Pienaar IS. A Novel Mitochondria-Targeting Iron Chelator Neuroprotects Multimodally via HIF-1 Modulation Against a Mitochondrial Toxin in a Dopaminergic Cell Model of Parkinson's Disease. Mol Neurobiol 2023; 60:749-767. [PMID: 36357615 DOI: 10.1007/s12035-022-03107-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 10/25/2022] [Indexed: 11/12/2022]
Abstract
Coumarins are plant-derived polyphenolic compounds belonging to the benzopyrones family, possessing wide-ranging pharmaceutical applications including cytoprotection, which may translate into therapeutic potential for multiple diseases, including Parkinson's disease (PD). Here we demonstrate the neuroprotective potential of a new polyhydroxyl coumarin, N-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)-2-(7-hydroxy-2-oxo-2H-chromen-4-yl)acetamide (CT51), against the mitochondrial toxin 1-methyl-4-phenylpyridinium (MPP+). MPP+'s mechanism of toxicity relates to its ability to inhibit complex I of the mitochondrial electron transport chain (METC), leading to adenosine triphosphate (ATP) depletion, increased reactive oxygen species (ROS) production, and apoptotic cell death, hence mimicking PD-related neuropathology. Dopaminergic differentiated human neuroblastoma cells were briefly pretreated with CT51, followed by toxin exposure. CT51 significantly restored somatic cell viability and neurite processes; hence, the drug targets cell bodies and axons thereby preserving neural function and circuitry against PD-related damage. Moreover, MPP+ emulates the iron dyshomeostasis affecting dopaminergic neurons in PD-affected brains, whilst CT51 was previously revealed as an effective iron chelator that preferentially partitions to mitochondria. We extend these findings by characterising the drug's interactive effects at the METC level. CT51 did not improve mitochondrial coupling efficiency. However, voltammetric measurements and high-resolution respirometry analysis revealed that CT51 acts as an antioxidant agent. Also, the neuronal protection afforded by CT51 associated with downregulating MPP+-induced upregulated expression of hypoxia-inducible factor 1 alpha (HIF-1α), a protein which regulates iron homeostasis and protects against certain forms of oxidative stress after translocating to mitochondria. Our findings support the further development of CT51 as a dual functioning iron chelator and antioxidant antiparkinsonian agent.
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Affiliation(s)
- Belinda Fouché
- Centre for Human Metabolomics, North-West University, Potchefstroom, South Africa
| | - Stephanie Turner
- School of Life Sciences, University of Sussex, Falmer, Brighton, UK
| | - Rebecca Gorham
- School of Life Sciences, University of Sussex, Falmer, Brighton, UK
| | | | - Simon Gutbier
- Unit for In Vitro Toxicology and Biomedicine, Department Inaugurated By the Doeren Kamp-Zbinden Foundation, University of Konstanz, 78457, Konstanz, Germany
| | - Joanna L Elson
- Centre for Human Metabolomics, North-West University, Potchefstroom, South Africa.,The Welcome Trust Centre for Mitochondrial Research, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Olimpo García-Beltrán
- Centro Integrativo de Biología Y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile.,Facultad de Ciencias Naturales Y Matemáticas, Universidad de Ibagué, Ibagué, Colombia
| | | | - Ilse S Pienaar
- Centre for Human Metabolomics, North-West University, Potchefstroom, South Africa. .,Institute of Clinical Sciences, University of Birmingham, Edgbaston, Birmingham, B12 2TT, UK.
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Clarke S, Bosman G, du Toit W, Aleixandre‐Tudo JL. White wine phenolics: current methods of analysis. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:7-25. [PMID: 35821577 PMCID: PMC9796155 DOI: 10.1002/jsfa.12120] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 07/07/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
White wine phenolic analyses are less common in the literature than analyses of red wine phenolics. Analytical techniques for white wine phenolic analyses using spectrophotometric, chromatographic, spectroscopic, and electrochemical methods are reported. The interest of research in this area combined with the advances in technology aimed at the winemaking industry are promoting the establishment of novel approaches for identifying, quantifying, and classifying phenolic compounds in white wine. This review article provides an overview of the current research into white wine phenolics through a critical discussion of the analytical methods employed. © 2022 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Sarah Clarke
- South African Grape and Wine Research Institute (SAGWRI), Department of Viticulture and OenologyStellenbosch UniversityStellenboschSouth Africa
| | - Gurthwin Bosman
- Department of PhysicsStellenbosch UniversityStellenboschSouth Africa
| | - Wessel du Toit
- South African Grape and Wine Research Institute (SAGWRI), Department of Viticulture and OenologyStellenbosch UniversityStellenboschSouth Africa
| | - Jose Luis Aleixandre‐Tudo
- South African Grape and Wine Research Institute (SAGWRI), Department of Viticulture and OenologyStellenbosch UniversityStellenboschSouth Africa
- Instituto de Ingeniería de Alimentos para el Desarrollo (IIAD), Departamento de Tecnología de AlimentosUniversidad Politécnica de ValenciaValenciaSpain
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Fabrication and characterization of oil-in-water emulsions stabilized by whey protein isolate/phloridzin/sodium alginate ternary complex. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107625] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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In Vitro Antioxidant and Prooxidant Activities of Red Raspberry (Rubus idaeus L.) Stem Extracts. Molecules 2022; 27:molecules27134073. [PMID: 35807315 PMCID: PMC9268408 DOI: 10.3390/molecules27134073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/14/2022] [Accepted: 06/21/2022] [Indexed: 11/16/2022] Open
Abstract
Leaves and stems of red raspberry (Rubus idaeus) are used in Lithuanian folk medicine. Healing properties of raspberry are related to the content of bioactive compounds, mainly polyphenols. Extracts of raspberry leaves contained higher total phenolic content (TPC) (1290 mg/L, expressed in gallic acid equivalent) compared to that in extracts of stems or peeled bark (up to 420 mg/L and 598 mg/L, respectively). To find out whether the collection time of herbal material was critical for the properties of the extracts, the stems were collected at different times of the year. TPC in the extracts depended more on extraction conditions rather than on the sampling time. Antioxidant activity of raspberry stem and bark extracts tested by spectrophotometric (DPPH● scavenging) and electrochemical (cyclic and differential pulse voltammetry) assays correlated with TPC. DPPH radical scavenging activity values for stem, leaf, and bark extracts were as follows: ≤1.18 ± 0.07, 1.63 ± 0.10, and ≤1.90 ± 0.04 (mmol/L, TROLOX equivalent), respectively. Assessed electrochemically, hydrogen peroxide-scavenging activity of extracts was independent on TPC. The latter activity was related to the presence of some protein in the extract as revealed by gel electrophoresis. Prooxidant activity of raspberry stem extracts was dependent on solution pH and temperature.
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Evaluation of Antioxidant Potential of Commercial Cinnamon Samples and Its Vasculature Effects. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1992039. [PMID: 35368871 PMCID: PMC8967587 DOI: 10.1155/2022/1992039] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/01/2022] [Accepted: 02/25/2022] [Indexed: 12/17/2022]
Abstract
Growing concerns on free radicals are the oxidative processes associated with physiological damage. The consumption of functional foods and use of plants with antioxidant capacity are widespread. Given the importance of determining antioxidant capacity in relation to the therapeutic effect, this study was aimed at evaluating cinnamon extract (Cinnamomum sp.) in commercial samples by spectrophotometric and voltammetric methods and assessing the vascular activity of some samples. The spectrophotometric methods performed were DPPH (1,1-diphenyl-2-picrihydrazine), ABTS (2,21-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid)), and Folin-Ciocalteu radical sequestration assays. For the electrochemical experiments, a three-electrode system was used, consisting of carbon paste electrode, platinum wire, and Ag/AgCl/KClsat, representing the working, auxiliary, and reference electrodes, respectively. The electroanalytical methods used were differential pulse, square wave, and cyclic voltammetries. The extracts were prepared in hydroalcoholic solution. A calibration curve with gallic acid was calculated to quantify their equivalent amounts in the analyzed extract. The correlation between the electrochemical approach and the total phenols calculated by the ABTS, DPPH, and Folin-Ciocalteu methods was 0.63, 0.7, and 0.73, respectively, with 1 being an ideal directly proportional correlation. The correlation between spectrophotometric methods was 0.83. A biosensor was developed in a carbon paste electrode using the enzyme laccase, obtained by the fungus Marasmiellus colocasiae. It was observed that the antioxidant profile of the cinnamon samples had an analytical sign improvement of up to 4 times when compared with the electrode without the modification. The samples were analyzed by mass spectrometer, and the main chemical markers found were coumarin, cinnamaldehyde, and eugenol. Pharmacological trials showed that these samples also induce a significant vasorelaxant effect associated to antioxidant potential on vascular injury induced by oxidative stress. Thus, cinnamon showed a high antioxidant capacity, in agreement with the results obtained in other studies, emphasizing its importance as a functional food.
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Nahuelcura J, Ruiz A, Gomez F, Cornejo P. The effect of arbuscular mycorrhizal fungi on the phenolic compounds profile, antioxidant activity and grain yields in wheat cultivars growing under hydric stress. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:407-416. [PMID: 34143900 DOI: 10.1002/jsfa.11370] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/18/2021] [Accepted: 06/18/2021] [Indexed: 05/27/2023]
Abstract
BACKGROUND Hydric stress affects the production of wheat (Triticum aestivum L.) worldwide, making some tools necessary to cope with the decrease in rainfall. A sustainable alternative is the use of arbuscular mycorrhizal fungi (AMF) as biofertilisers. Here, we analysed the effects of AMF strains adapted or non-adapted to hyper-arid conditions on the phenolic profiles and antioxidant activities of wheat grains from two cultivars with contrasting tolerance to osmotic stress (Ilustre, moderately tolerant; and Maxi, tolerant) grown with and without hydric stress. RESULTS Eight phenolic compounds were detected, apigenin-C-pentoside-C-hexoside I being the most abundant and showing an increase of 80.5% when inoculated with the fungus Funneliformis mosseae (FM) obtained from Atacama Desert under normal irrigation with respect to non-mycorrhizal (NM) plants. NM treatments were associated with higher grain yields. FM showed a noticeable effect on most phenolic compounds, with an increase up to 30.2% in apigenin-C-pentoside-C-hexoside III concentration under hydric stress with respect to normal irrigation, being also responsible for high antioxidant activities such as ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) and DPPH (2,2-diphenyl-1-picrylhydrazyl) activities. CONCLUSION Inoculation with FM adapted to hydric stress produced improvements in phenolics composition and antioxidant activities in grains from wheat plants growing under hydric stress conditions, improving their food quality and supporting the development of further studies to determine whether the use of adapted AMF could be a realistic tool to improve grain quality in a scenario of increasing hydric stress conditions. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Javiera Nahuelcura
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Temuco, Chile
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Temuco, Chile
| | - Antonieta Ruiz
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Temuco, Chile
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Temuco, Chile
| | - Francisca Gomez
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Temuco, Chile
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Temuco, Chile
| | - Pablo Cornejo
- Centro de Investigación en Micorrizas y Sustentabilidad Agroambiental, CIMYSA, Universidad de La Frontera, Temuco, Chile
- Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus BIOREN-UFRO, Universidad de La Frontera, Temuco, Chile
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Red Wine Oxidation Characterization by Accelerated Ageing Tests and Cyclic Voltammetry. Antioxidants (Basel) 2021; 10:antiox10121943. [PMID: 34943046 PMCID: PMC8750522 DOI: 10.3390/antiox10121943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 11/29/2022] Open
Abstract
In order to obtain information on the oxidative behavior of red wines, oxygen consumption rates and electrochemical changes (cyclic voltammetry) were measured for nine red wines subject to three different accelerated ageing tests: chemical (with hydrogen peroxide), enzymatic (with laccase from Trametes versicolor), and temperature (at 60 °C). Oxidative behavior depended both on the wine sample and accelerated ageing test type. A good correlation was observed between electrochemical parameters of charges for reference/non-oxidized wines, in accordance with their antioxidant capacity, and the variation of charges after enzymatic and temperature tests, meaning that cyclic voltammetry could be used in order to predict these two oxidation tests and reflect the wine sensitivity towards respective oxidation targets. However, it was not possible to predict wine chemical oxidation test based on hydrogen peroxide from the electrochemical measurements.
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11
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Tereucan G, Ercoli S, Cornejo P, Winterhalter P, Contreras B, Ruiz A. Stability of antioxidant compounds and activities of a natural dye from coloured-flesh potatoes in dairy foods. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111252] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Chikere C, Hobben E, Faisal NH, Kong-Thoo-Lin P, Fernandez C. Electroanalytical determination of gallic acid in red and white wine samples using cobalt oxide nanoparticles-modified carbon-paste electrodes. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105668] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Effect of different pre-treatment maceration techniques on the content of phenolic compounds and color of Dornfelder wines elaborated in cold climate. Food Chem 2020; 339:127888. [PMID: 32866705 DOI: 10.1016/j.foodchem.2020.127888] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 08/16/2020] [Accepted: 08/16/2020] [Indexed: 01/08/2023]
Abstract
This study present the effects of different pre-treatment maceration techniques (microwave, thermo-maceration, and enzymatic treatment) on the content of phenolic compounds (by UPLC-PDA) and their redox potential by cyclic voltammetry (CV), antioxidant capacity (ABTS radical cation decolorization assay and FRAP as Ferric Reducing Ability of Plasma), and other basic chemical properties of red wine made from cv. Dornfelder. The pre-treatment maceration technique significantly (p < 0.05) affected the content of total phenolics in Dornfelder must (freshly crushed grapes), with particularly high amounts in the must pre-treated by microwaves (4344.0 mg/100 mL), and the lowest in the must pre-treatment by thermo-maceration (2979.8 mg/100 mL). A positive correlation was found between the content of total phenolics and antioxidant activity (R = 0.69 and 0.52 by ABTS and FRAP assay, respectively) and individual groups of polyphenols (for ABTS assay with anthocyanins, flavonols, flavan-3-ols, respectively R = 0.60, 0.64 and 0.66, while for FRAP method only for anthocyanins R = 0.79). The highest antioxidant activity was also determined for the variant with microwave pre-treatment (must 3.31 mM and 3.05 mM Trolox/100 mL for ABTS and FRAP assay, respectively). Following the fermentation and maturation, the amount of polyphenols decreased. No thermal pre-treatment maceration methods gave lighter or redder must. After winemaking process all the samples were characterized by less red and more yellow shade.
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Abstract
An infusion of green coffee is a commonly consumed beverage, famous for its health-promoting properties. Green coffee owes its properties to the richness of active phytochemicals. The aim of this study was to determine the components of green coffee bean extracts and their properties. The scope of research included gas chromatography-mass spectrometry (GC-MS), Fourier transform infrared spectroscopy (FTIR) and Ultraviolet-Visible spectroscopy (UV-Vis) spectroscopy; the electrochemical determination of the behavior of green coffee extract; and the determination of antioxidant properties by colorimetric spectroscopic methods (ABTS, DPPH, FRAP and CUPRAC). Water and ethanol extracts from green coffee were characterized by significant antioxidant properties and a high capacity to reduce transition metal ions. Voltammetric tests showed that the solution has good antioxidant properties in view of it contains many polyphenolic compounds that oxidize in the potential range tested.
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15
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Phenolic Compounds Exerting Lipid-Regulatory, Anti-Inflammatory and Epigenetic Effects as Complementary Treatments in Cardiovascular Diseases. Biomolecules 2020; 10:biom10040641. [PMID: 32326376 PMCID: PMC7226566 DOI: 10.3390/biom10040641] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 12/14/2022] Open
Abstract
Atherosclerosis is the main process behind cardiovascular diseases (CVD), maladies which continue to be responsible for up to 70% of death worldwide. Despite the ongoing development of new and potent drugs, their incomplete efficacy, partial intolerance and numerous side effects make the search for new alternatives worthwhile. The focus of the scientific world turned to the potential of natural active compounds to prevent and treat CVD. Essential for effective prevention or treatment based on phytochemicals is to know their mechanisms of action according to their bioavailability and dosage. The present review is focused on the latest data about phenolic compounds and aims to collect and correlate the reliable existing knowledge concerning their molecular mechanisms of action to counteract important risk factors that contribute to the initiation and development of atherosclerosis: dyslipidemia, and oxidative and inflammatory-stress. The selection of phenolic compounds was made to prove their multiple benefic effects and endorse them as CVD remedies, complementary to allopathic drugs. The review also highlights some aspects that still need clear scientific explanations and draws up some new molecular approaches to validate phenolic compounds for CVD complementary therapy in the near future.
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16
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Gelatin/zein fiber mats encapsulated with resveratrol: Kinetics, antibacterial activity and application for pork preservation. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105577] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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17
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Yi H, Cheng Y, Zhang Y, Xie Q, Yang X. Potentiometric and UV-Vis spectrophotometric titrations for evaluation of the antioxidant capacity of chicoric acid. RSC Adv 2020; 10:11876-11882. [PMID: 35496633 PMCID: PMC9050702 DOI: 10.1039/d0ra01248c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 03/15/2020] [Indexed: 11/21/2022] Open
Abstract
Potentiometric/spectrophotometric titrations have revealed the antioxidation behavior and mechanisms of chicoric acid (ChA, versus trolox) against ABTS˙+ radical cations.
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Affiliation(s)
- Haiqing Yi
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- China
| | - Yan Cheng
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- China
| | - Yu Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- China
| | - Qingji Xie
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- China
| | - Xiaoping Yang
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province
- School of Medicine
- Hunan Normal University
- Changsha 410013
- China
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18
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Sim HJ, Bhattarai G, Lee J, Lee JC, Kook SH. The Long-lasting Radioprotective Effect of Caffeic Acid in Mice Exposed to Total Body Irradiation by Modulating Reactive Oxygen Species Generation and Hematopoietic Stem Cell Senescence-Accompanied Long-term Residual Bone Marrow Injury. Aging Dis 2019; 10:1320-1327. [PMID: 31788343 PMCID: PMC6844585 DOI: 10.14336/ad.2019.0208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 02/08/2019] [Indexed: 12/21/2022] Open
Abstract
Total body irradiation (TBI) serves as an effectively curative therapy for cancer patients and adversely causes long-term residual bone marrow (BM) injury with premature senescence of hematopoietic stem cells (HSCs), which is mediated by increased production of reactive oxygen species (ROS). In the present study, we investigated how the exposure time of TBI in a mouse model affects HSCs and whether the treatment of caffeic acid (CA), a known dietary phenolic antioxidant, has a radioprotective effect. Single (S)-TBI at a sublethal dose (5 Gy) caused relatively higher induction of mitochondrial ROS and senescence-related factors in HSCs than those in hematopoietic progenitor cells (HPCs) and Lineage-Sca-1+c-Kit+ (LSK) cells, as well as reduced clonogenic formation and donor cell-derived reconstituting capacity. Repetitive double (D)-TBI (two months after the S-TBI at a dose of 5Gy) further weakened HSPC function via mitochondrial ROS accumulation and senescence-associated β-galactosidase (SA-β-gal) activity. Oral administration of CA (20 mg/kg) five times before and once immediately after TBI ameliorated ROS generation and TBI-induced HSC senescence and its radioprotective effect was long lasting in S-TBI mice but not in D-TBI mice. Further, supplementation of CA also induced apoptotic cell death of colon cancer cells. Collectively, these findings indicate that CA has a dual effect, ameliorating HSC senescence-accompanied long-term BM injury in S-TBI mice and stimulating apoptotic cell death of colon cancer cells.
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Affiliation(s)
- Hyun-Jaung Sim
- 1Department of Bioactive Material Sciences, Chonbuk National University, Jeonju 54896, South Korea.,2Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Bioscience, Chonbuk National University School of Dentistry, Jeonju 54896, South Korea
| | - Govinda Bhattarai
- 2Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Bioscience, Chonbuk National University School of Dentistry, Jeonju 54896, South Korea
| | - Joshua Lee
- 3Department of Bionanosystem Engineering, Graduate School, Chonbuk National University, Jeonju 54896, South Korea
| | - Jeong-Chae Lee
- 1Department of Bioactive Material Sciences, Chonbuk National University, Jeonju 54896, South Korea.,2Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Bioscience, Chonbuk National University School of Dentistry, Jeonju 54896, South Korea
| | - Sung-Ho Kook
- 1Department of Bioactive Material Sciences, Chonbuk National University, Jeonju 54896, South Korea.,2Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Bioscience, Chonbuk National University School of Dentistry, Jeonju 54896, South Korea
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19
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Polyphenolic Profile and Antioxidant Activity of Juglans regia L. Leaves and Husk Extracts. FORESTS 2019. [DOI: 10.3390/f10110988] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The aim of this study is to characterize the antioxidant capacity and establish the profile of polyphenolic compounds in walnut extracts (different extracts prepared from walnut leaf and green husks). The correlation between bioingredients of the product tested and their ability to scavenge free radicals and reduce them by chelating various metal ions were examined. Research technology combining TG (thermogravimetry), FTIR (Fourier-transform infrared spectroscopy), high-performance liquid chromatography system (HPLC) with electrochemical methods (cyclic and differential pulse voltammetry) and spectrophotometric methods (ABTS, FRAP, and DPPH assays) was used to rate the potential oxidation-reduction components of walnut extracts. A high affinity for scavenging free radicals ABTS and DPPH was found for natural substances present in leaves and green husks. The walnut is beneficial to health as it contains alpha-linolenic acid in its lipid fraction and, as demonstrated in this study, its husks are rich in polyphenolics with high antioxidant capacity.
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20
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Rocha P, Vilas‐Boas Â, Fontes N, Geraldo D, Bento F. Evaluation of Polyphenols in Wine by Voltammetric Techniques with Screen Printed Carbon Electrodes. ELECTROANAL 2019. [DOI: 10.1002/elan.201900392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Pedro Rocha
- Centre of ChemistryUniversidade do Minho Braga Portugal
| | | | | | - Dulce Geraldo
- Centre of ChemistryUniversidade do Minho Braga Portugal
| | - Fátima Bento
- Centre of ChemistryUniversidade do Minho Braga Portugal
- Departamento de QuímicaUniversidade do Minho Campus de Gualtar 4710-057 Braga Portugal
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21
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Trofin AE, Trincă LC, Ungureanu E, Ariton AM. CUPRAC Voltammetric Determination of Antioxidant Capacity in Tea Samples by Using Screen-Printed Microelectrodes. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2019; 2019:8012758. [PMID: 31218091 PMCID: PMC6536952 DOI: 10.1155/2019/8012758] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 04/09/2019] [Accepted: 04/16/2019] [Indexed: 06/09/2023]
Abstract
Measurement of antioxidant capacity represents an analytical major challenge in terms of accuracy, efficiency, rapid response, or low cost of detection methods. Quantification of antioxidant capacity of food samples using disposable screen-printed microelectrodes (SPMEs) was based on cyclic voltammetry versus open-circuit potential (CV vs OCP) and differential pulse voltammetry (DPV) as compared with spectrophotometric measurement of the CUPRAC reaction with 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (trolox). The SPMEs are organic-resistant electrodes and thus compatible with food samples and organic solvents used to dissolve trolox. A micropipette was used to release a drop of 50 μL sample on the spotted surface of the SPME sensor/working electrode that was time programmed to function according to the working protocol. The SPME response was linearly correlated with trolox content. This preliminary demonstration was focused on the analysis of tea infusions, due to the simplicity and reproducibility of the samples' preparations involved. Analytical results of the antioxidant capacity (expressed as mol·L-1 trolox equivalents) of the tea samples showed a good agreement in the case of spectrophotometry and differential pulse voltammetry (R 2 > 0.998). DPV with SPME based on CUPRAC reactions was proven to be a promising approach for the characterization of antioxidant capacity of tea samples with rapid response, cost-effectiveness, and simplicity of operation.
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Affiliation(s)
- Alina Elena Trofin
- Department of Exact Sciences, University of Agricultural Sciences and Veterinary Medicine “Ion Ionescu de la Brad”, Iasi 700490, Romania
| | - Lucia Carmen Trincă
- Department of Exact Sciences, University of Agricultural Sciences and Veterinary Medicine “Ion Ionescu de la Brad”, Iasi 700490, Romania
| | - Elena Ungureanu
- Department of Exact Sciences, University of Agricultural Sciences and Veterinary Medicine “Ion Ionescu de la Brad”, Iasi 700490, Romania
| | - Adina Mirela Ariton
- Research and Development Center for Cattle Breeding Dancu, Iasi 707252, Romania
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22
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Veloso AD, Ferraria AM, Botelho do Rego AM, Tavares PB, Valentão P, Pereira DD, Andrade PB, Fernandes AJ, Oliveira MC, Videira RA. Hydrophilic Carbon Nanomaterials: Characterisation by Physical, Chemical, and Biological Assays. ChemMedChem 2019; 14:699-711. [DOI: 10.1002/cmdc.201900003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/29/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Andreia D. Veloso
- CQ-VR and Chemistry DepartmentUniversity of Trás-os-Montes e Alto Douro 5000-801 Vila Real Portugal
| | - Ana M. Ferraria
- Centro de Química-Física Molecular and IN and IBBInstituto Superior TécnicoUniversidade de Lisboa 1049-001 Lisboa Portugal
| | - Ana M. Botelho do Rego
- Centro de Química-Física Molecular and IN and IBBInstituto Superior TécnicoUniversidade de Lisboa 1049-001 Lisboa Portugal
| | - Pedro B. Tavares
- CQ-VR and Chemistry DepartmentUniversity of Trás-os-Montes e Alto Douro 5000-801 Vila Real Portugal
| | - Patrícia Valentão
- REQUIMTE/LAQV, Laboratório de FarmacognosiaDepartamento de Química, Faculdade de FarmáciaUniversidade do Porto 4050-313 Porto Portugal
| | - David D. Pereira
- REQUIMTE/LAQV, Laboratório de FarmacognosiaDepartamento de Química, Faculdade de FarmáciaUniversidade do Porto 4050-313 Porto Portugal
| | - Paula B. Andrade
- REQUIMTE/LAQV, Laboratório de FarmacognosiaDepartamento de Química, Faculdade de FarmáciaUniversidade do Porto 4050-313 Porto Portugal
| | - António J. Fernandes
- I3N and Physics DepartmentUniversity of Aveiro Campus de Santiago 3810-193 Aveiro Portugal
| | - Maria C. Oliveira
- CQ-VR and Chemistry DepartmentUniversity of Trás-os-Montes e Alto Douro 5000-801 Vila Real Portugal
| | - Romeu A. Videira
- REQUIMTE/LAQV, Laboratório de FarmacognosiaDepartamento de Química, Faculdade de FarmáciaUniversidade do Porto 4050-313 Porto Portugal
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23
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Voltammetric determination of caffeic acid by using a glassy carbon electrode modified with a chitosan-protected nanohybrid composed of carbon black and reduced graphene oxide. Mikrochim Acta 2019; 186:54. [PMID: 30618010 DOI: 10.1007/s00604-018-3117-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 11/25/2018] [Indexed: 12/21/2022]
Abstract
Differential pulse voltammetry (DPV) was employed for the determination of caffeic acid (CA) in acidic solutions by using a glassy carbon electrode (GCE) modified with a chitosan-protected nanohybrid composed of carbon black and reduced graphene oxide. Electrochemical impedance spectroscopy and cyclic voltammetry were utilized to study the interfacial electron transfer on the modified GCE. Cyclic voltammetry shows that CA exhibits a reversible redox reaction with an oxidation peak at + 0.30 V (vs. Ag/AgCl) and a reduction peak at + 0.24 V in pH 3.0 solution at a scan rate of 50 mV·s-1. Under the optimized experimental conditions, the response to CA is linear in 0.3× 10-9 to 57.3 × 10-5 M concentration range. The limit of detection is 0.03 × 10-9 M (at an S/N ratio of 3), and the electrochemical sensitivity is 5.96 μA∙ μM-1∙cm-2. This sensor for CA displays better sensitivity and a response over a wider concentration range. It was applied to the determination of CA at trace levels in various (spiked) wine samples. Graphical abstract Schematic presentation of a sensitive electrochemical method for the quantitative detection of caffeic acid using chitosan protected carbon black and reduced graphene oxide. It can be used for the quantitative detection of caffeic acid in wine samples.
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24
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Hacke ACM, Lima D, de Costa F, Deshmukh K, Li N, Chow AM, Marques JA, Pereira RP, Kerman K. Probing the antioxidant activity of Δ9-tetrahydrocannabinol and cannabidiol in Cannabis sativa extracts. Analyst 2019; 144:4952-4961. [DOI: 10.1039/c9an00890j] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A good correlation was obtained between the antioxidant activities of Cannabis sativa samples determined by spectrophotometric and electrochemical methods.
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Affiliation(s)
| | - Dhésmon Lima
- Departamento de Química
- Universidade Estadual de Ponta Grossa
- Ponta Grossa
- Brazil
| | | | | | - Nan Li
- Lupos (Canada) Biotechnology Inc
- Toronto
- Canada
| | - Ari M. Chow
- Department of Physical and Environmental Sciences
- University of Toronto Scarborough
- Toronto
- Canada
| | | | | | - Kagan Kerman
- Department of Physical and Environmental Sciences
- University of Toronto Scarborough
- Toronto
- Canada
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25
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Ismail NI, Sornambikai S, Kadir MRA, Mahmood NH, Zulkifli RM, Shahir S. Evaluation of Radical Scavenging Capacity of Polyphenols Found in Natural Malaysian Honeys by Voltammetric Techniques. ELECTROANAL 2018. [DOI: 10.1002/elan.201800493] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Norjihada Izzah Ismail
- Medical Devices and Technology GroupSchool of Biomedical Engineering and Health SciencesFaculty of EngineeringUniversiti Teknologi Malaysia Johor Malaysia
| | | | - Mohammed Rafiq Abdul Kadir
- Medical Devices and Technology GroupSchool of Biomedical Engineering and Health SciencesFaculty of EngineeringUniversiti Teknologi Malaysia Johor Malaysia
| | - Nasrul Humaimi Mahmood
- School of Electrical EngineeringFaculty of EngineeringUniversiti Teknologi Malaysia Johor Malaysia
| | | | - Shafinaz Shahir
- Department of BiosciencesFaculty of ScienceUniversiti Teknologi Malaysia Johor Malaysia
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26
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Vilas-Boas Â, Valderrama P, Fontes N, Geraldo D, Bento F. Evaluation of total polyphenol content of wines by means of voltammetric techniques: Cyclic voltammetry vs differential pulse voltammetry. Food Chem 2018; 276:719-725. [PMID: 30409654 DOI: 10.1016/j.foodchem.2018.10.078] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 10/12/2018] [Accepted: 10/14/2018] [Indexed: 10/28/2022]
Abstract
Taking advantage of the low oxidation potential of polyphenolic compounds, voltammetric techniques, such as cyclic voltammetry (CV) and differential pulse voltammetry (DPV) are used rather indiscriminately. In this work, we report Total Polyphenols results (TPP) obtained by these two techniques from a set of nine samples of red and Tawny Port wine. The CV and DPV voltammograms display significant correlations with the physical-chemical parameters used to characterize red and Tawny Port wines, particularly with polyphenols. Although data obtained from CV and DPV for a single polyphenol are directly proportional, important deviations are found between voltammetric results from wines. Results from CV tend to be larger than those from DPV. This difference, that can reach 50% of the TPP value, was related to the presence of total sulphur dioxide. In view of the present study, the polyphenol quantification in wines should be performed by DPV to minimize the interference of SO2.
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Affiliation(s)
| | | | | | - Dulce Geraldo
- Centre of Chemistry, Universidade do Minho, Braga, Portugal
| | - Fátima Bento
- Centre of Chemistry, Universidade do Minho, Braga, Portugal.
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27
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Li L, Wang H, Chen M, Jiang S, Jiang S, Li X, Wang Q. Butylated hydroxyanisole encapsulated in gelatin fiber mats: Volatile release kinetics, functional effectiveness and application to strawberry preservation. Food Chem 2018; 269:142-149. [PMID: 30100416 DOI: 10.1016/j.foodchem.2018.06.150] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 06/26/2018] [Accepted: 06/30/2018] [Indexed: 10/28/2022]
Abstract
Butylated hydroxyanisole (BHA) encapsulated in gelatin (GA) (GA-BHA) fiber mats were fabricated via electrospinning technique and applied to strawberry preservation. The volatile release kinetics and functional effectiveness of the mats were investigated. BHA was high efficiently encapsulated in GA fibers and the antioxidant activity of BHA could be well protected. The encapsulation of BHA enhanced the stability of GA and favored structure transition of GA from random coil and β-turns to α-helix and β-sheet. The GA-BHA mats showed good antibacterial activity against Staphylococcus aureus, and the predominant volatile release mechanism of BHA from mats was Fickian diffusion. Furthermore, the mats also showed broad-spectrum antifungal activity against four mould genera (Rhizopus sp., Mucor sp., Aspergillus sp. and Penicillium sp.). The shelf-life of strawberry can be prolonged effectively in the presence of GA-BHA mats during storage. Results suggested that the GA-BHA mats may have a great potential in active food packaging.
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Affiliation(s)
- Linlin Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 230009 Hefei, Anhui, PR China
| | - Hualin Wang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 230009 Hefei, Anhui, PR China; Anhui Institute of Agro-Products Intensive Processing Technology, 230009 Hefei, Anhui, PR China.
| | - Minmin Chen
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 230009 Hefei, Anhui, PR China
| | - Suwei Jiang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 230009 Hefei, Anhui, PR China
| | - Shaotong Jiang
- School of Food Science and Engineering, Hefei University of Technology, 230009 Hefei, Anhui, PR China; Anhui Institute of Agro-Products Intensive Processing Technology, 230009 Hefei, Anhui, PR China
| | - Xingjiang Li
- School of Food Science and Engineering, Hefei University of Technology, 230009 Hefei, Anhui, PR China.
| | - Qiaoyun Wang
- School of Food Science and Engineering, Hefei University of Technology, 230009 Hefei, Anhui, PR China
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28
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Phenolic compounds and antioxidant activity of twelve grape cultivars measured by chemical and electrochemical methods. Eur Food Res Technol 2018. [DOI: 10.1007/s00217-018-3105-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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29
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Sánchez Arribas A, Moreno M, Moreno GA, Bermejo E, Zapardiel A, Chicharro M. Characterization of White Wines by Electrochemical Indexes Obtained Using Carbon Nanotube-modified Electrodes. ELECTROANAL 2018. [DOI: 10.1002/elan.201800073] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Alberto Sánchez Arribas
- Dpto. Química Analítica y Análisis Instrumental; Universidad Autónoma de Madrid.; C/Francisco Tomás y Valiente 7 Madrid Spain
| | - Mónica Moreno
- Dpto. Química Analítica y Análisis Instrumental; Universidad Autónoma de Madrid.; C/Francisco Tomás y Valiente 7 Madrid Spain
| | - Gabriel A. Moreno
- Dpto. Química Analítica y Análisis Instrumental; Universidad Autónoma de Madrid.; C/Francisco Tomás y Valiente 7 Madrid Spain
| | - Esperanza Bermejo
- Dpto. Química Analítica y Análisis Instrumental; Universidad Autónoma de Madrid.; C/Francisco Tomás y Valiente 7 Madrid Spain
| | - Antonio Zapardiel
- Dpto. Ciencias Analíticas.; Universidad Nacional de Educación a Distancia.; P° Senda del Rey 9 Madrid Spain
| | - Manuel Chicharro
- Dpto. Química Analítica y Análisis Instrumental; Universidad Autónoma de Madrid.; C/Francisco Tomás y Valiente 7 Madrid Spain
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30
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Square wave voltammetric analysis of polyphenol content and antioxidant capacity of red wines using glassy carbon and disposable carbon nanotubes modified screen-printed electrodes. Eur Food Res Technol 2018. [DOI: 10.1007/s00217-018-3038-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Carneiro EA, Agustini D, Figueiredo-Filho LCS, Banks CE, Marcolino-Junior LH, Bergamini MF. 3D-printed Microfluidic Device Based on Cotton Threads for Amperometric Estimation of Antioxidants in Wine Samples. ELECTROANAL 2017. [DOI: 10.1002/elan.201700579] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Emmanuelle A. Carneiro
- Laboratório de Sensores Eletroquímicos (LabSensE), Departamento de Química; Universidade Federal do Paraná (UFPR); CEP 81.531-980 Curitiba-PR Brazil
| | - Deonir Agustini
- Laboratório de Sensores Eletroquímicos (LabSensE), Departamento de Química; Universidade Federal do Paraná (UFPR); CEP 81.531-980 Curitiba-PR Brazil
| | | | - Craig E. Banks
- Faculty of Science and Engineering; Manchester Metropolitan University; Chester Street Manchester M1 5GD UK
| | - Luiz Humberto Marcolino-Junior
- Laboratório de Sensores Eletroquímicos (LabSensE), Departamento de Química; Universidade Federal do Paraná (UFPR); CEP 81.531-980 Curitiba-PR Brazil
| | - Márcio F. Bergamini
- Laboratório de Sensores Eletroquímicos (LabSensE), Departamento de Química; Universidade Federal do Paraná (UFPR); CEP 81.531-980 Curitiba-PR Brazil
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32
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Toma L, Sanda GM, Niculescu LS, Deleanu M, Stancu CS, Sima AV. Caffeic acid attenuates the inflammatory stress induced by glycated LDL in human endothelial cells by mechanisms involving inhibition of AGE-receptor, oxidative, and endoplasmic reticulum stress. Biofactors 2017; 43:685-697. [PMID: 28753257 DOI: 10.1002/biof.1373] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/12/2017] [Indexed: 01/12/2023]
Abstract
Type 2 diabetes mellitus is a worldwide epidemic and its atherosclerotic complications determine the high morbidity and mortality of diabetic patients. Caffeic acid (CAF), a phenolic acid present in normal diets, is known for its antioxidant properties. The aim of this study was to investigate CAF's anti-inflammatory properties and its mechanism of action, using cultured human endothelial cells (HEC) incubated with glycated low-density lipoproteins (gLDL). Levels of the receptor for advanced glycation end-products (RAGE), inflammatory stress markers (C reactive protein, CRP; vascular cell adhesion molecule-1, VCAM-1; monocyte chemoattractant protein-1, MCP-1), and oxidative stress and endoplasmic reticulum stress (ERS) markers were evaluated in gLDL-exposed HEC, in the presence/absence of CAF. RAGE silencing or blocking, specific inhibitors for oxidative stress (apocynin, N-acetyl-cysteine), and ERS (salubrinal) were used. The results showed that: (i) gLDL induced CRP synthesis and secretion through mechanisms involving NADPH oxidase-dependent oxidative stress and ERS in HEC; (ii) gLDL-RAGE interaction, oxidative stress, and ERS stimulated the secretion of VCAM-1 and MCP-1 in HEC; and (iii) CAF reduced the secretion of CRP, VCAM-1, and MCP-1 in gLDL-exposed HEC by inhibiting RAGE expression, oxidative stress, and ERS. In conclusion, CAF might be a promising alternative to ameliorate a wide spectrum of disorders due to its complex mechanisms of action resulting in anti-inflammatory and antioxidative properties. © 2017 BioFactors, 43(5):685-697, 2017.
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Affiliation(s)
- Laura Toma
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, Bucharest, Romania
| | - Gabriela M Sanda
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, Bucharest, Romania
| | - Loredan S Niculescu
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, Bucharest, Romania
| | - Mariana Deleanu
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, Bucharest, Romania
- Faculty of Biotechnology, University of Agronomical Sciences and Veterinary Medicine, Bucharest, Romania
| | - Camelia S Stancu
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, Bucharest, Romania
| | - Anca V Sima
- Lipidomics Department, Institute of Cellular Biology and Pathology "Nicolae Simionescu" of the Romanian Academy, Bucharest, Romania
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Menezes Peixoto CRD, Fraga S, Rosa Justim JD, Silva Gomes M, Gonçalves Carvalho D, Jarenkow JA, Fernandes de Moura N. Voltammetric determination of total antioxidant capacity of Bunchosia glandulifera tree extracts. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0935-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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36
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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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37
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Wang H, Hao L, Wang P, Chen M, Jiang S, Jiang S. Release kinetics and antibacterial activity of curcumin loaded zein fibers. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2016.09.028] [Citation(s) in RCA: 168] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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38
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Robledo SN, López JC, Granero AM, Zensich MA, Morales GM, Fernández H, Zon MA. Characterization of the surface redox process of caffeic acid adsorbed at glassy carbon electrodes modified with partially reduced graphene oxide. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.11.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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39
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Jara-Palacios MJ, Hernanz D, Escudero-Gilete ML, Heredia FJ. The Use of Grape Seed Byproducts Rich in Flavonoids to Improve the Antioxidant Potential of Red Wines. Molecules 2016; 21:E1526. [PMID: 27845756 PMCID: PMC6274374 DOI: 10.3390/molecules21111526] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/02/2016] [Accepted: 11/08/2016] [Indexed: 01/09/2023] Open
Abstract
The influence of adding seeds from grape pomace during Syrah wine fermentation in a warm climate has been studied. Seeds of Pedro Ximenez variety were rich in phenolic compounds, mainly flavonoids such as catechin and procyanidins. Changes in total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity of red wines were observed. These changes depended on the vinification stage and the amount of seeds (SW: 450 g or DW: 900 g seeds/150 kg grapes) applied. In general, antioxidant activity was greater when a simple dose (SW) was considered. Results indicate that seeds rich in flavonoids could be used as wine additives, which could improve the antioxidant potential of red wines in a warm climate.
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Affiliation(s)
- María José Jara-Palacios
- Food Colour & Quality Laboratory, Department of Nutrition & Food Science, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain.
| | - Dolores Hernanz
- Department of Analytical Chemistry, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain.
| | - María Luisa Escudero-Gilete
- Food Colour & Quality Laboratory, Department of Nutrition & Food Science, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain.
| | - Francisco J Heredia
- Food Colour & Quality Laboratory, Department of Nutrition & Food Science, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain.
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40
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de Macêdo IYL, Garcia LF, Oliveira Neto JR, de Siqueira Leite KC, Ferreira VS, Ghedini PC, de Souza Gil E. Electroanalytical tools for antioxidant evaluation of red fruits dry extracts. Food Chem 2016; 217:326-331. [PMID: 27664641 DOI: 10.1016/j.foodchem.2016.08.082] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 08/23/2016] [Accepted: 08/23/2016] [Indexed: 10/21/2022]
Abstract
Red fruits are rich sources of antioxidant compounds with recognized health benefits. Since they are perishable, dried extracts emerge as more durable products and their quality control must include antioxidant capacity assays. In this study, the redox behavior of commercial dried products obtained from camu-camu, açai, acerola and cranberry red fruits was evaluated by electroanalytical approaches. The antioxidant potential was determined by 2,2-diphenyl-1-picrylhydrazyl free radical assay and the electrochemical index concept. The total phenol content was estimated by using a laccase based biosensor. A significant correlation was found between all methods and literature data. The voltammetric profile (cyclic, differential and square wave) obtained for each type of dried extract showed distinguishable features that were correlated with their main major markers, being also useful for identification purposes. The electrochemical methods were cheaper and more practical for evaluation of antioxidant properties and total phenol content in dried powders obtained from different red fruits.
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Affiliation(s)
- Isaac Yves Lopes de Macêdo
- Faculdade de Farmácia, Universidade Federal de Goiás, Rua 240 com 5a avenida, Setor Universitário, Goiânia, Goiás, Brazil
| | - Luane Ferreira Garcia
- Faculdade de Farmácia, Universidade Federal de Goiás, Rua 240 com 5a avenida, Setor Universitário, Goiânia, Goiás, Brazil
| | | | | | - Valdir Souza Ferreira
- Faculdade de Farmácia, Universidade Federal de Goiás, Rua 240 com 5a avenida, Setor Universitário, Goiânia, Goiás, Brazil
| | - Paulo César Ghedini
- Faculdade de Farmácia, Universidade Federal de Goiás, Rua 240 com 5a avenida, Setor Universitário, Goiânia, Goiás, Brazil
| | - Eric de Souza Gil
- Faculdade de Farmácia, Universidade Federal de Goiás, Rua 240 com 5a avenida, Setor Universitário, Goiânia, Goiás, Brazil.
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41
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Wang H, Hao L, Niu B, Jiang S, Cheng J, Jiang S. Kinetics and Antioxidant Capacity of Proanthocyanidins Encapsulated in Zein Electrospun Fibers by Cyclic Voltammetry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:3083-3090. [PMID: 27032258 DOI: 10.1021/acs.jafc.6b00540] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The proanthocyanidins encapsulated in zein (zein-PA) fibers was via electrospinning technique. The kinetics and antioxidant capacity of PA from zein fibers was investigated by cyclic voltammetry. Circular dichroism was used to investigate the secondary structure change of zein and its influence on the shape of fibers. The addition of PA caused a significant increase in viscosity and made fibers wider. These hydrogen bonds between zein and PA molecules would favor the α-helix change and decrease the β-folds of zein in electrospinning solutions, leading to a round-shaped tendency of fibers and enhancing the thermal properties slightly. Zein-PA fibers showed high encapsulation efficiency close to 100%, and the encapsulated PA retained its antioxidant capacity in fibers. Zein-PA fibers showed a good controlled release toward PA, and the predominant release of PA from fibers was Fickian diffusion, which could be well described by first-order model and Hixson-Crowell model.
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Affiliation(s)
- Hualin Wang
- Anhui Institute of Agro-Products Intensive Processing Technology , 230009 Hefei, Anhui, PR China
| | | | | | | | | | - Shaotong Jiang
- Anhui Institute of Agro-Products Intensive Processing Technology , 230009 Hefei, Anhui, PR China
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43
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Zhang TT, Lu CL, Jiang JG. Antioxidant and anti-tumour evaluation of compounds identified from fruit of Amomum tsaoko Crevost et Lemaire. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.08.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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44
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Tao Y, Sun DW, Górecki A, Błaszczak W, Lamparski G, Amarowicz R, Fornal J, Jeliński T. A preliminary study about the influence of high hydrostatic pressure processing in parallel with oak chip maceration on the physicochemical and sensory properties of a young red wine. Food Chem 2015; 194:545-54. [PMID: 26471591 DOI: 10.1016/j.foodchem.2015.07.041] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 07/06/2015] [Accepted: 07/09/2015] [Indexed: 11/28/2022]
Abstract
The influence of high hydrostatic pressure (HHP) processing in parallel with oak chip maceration on the physicochemical and sensory properties of a young red wine was investigated preliminarily. Wines were treated by HHP at 250, 450 and 650MPa for up to 45min and French oak chips (5g/L) were added. HHP enhanced the extraction of phenolics from oak chips. The phenolic contents and antioxidant activity of the wine increased after HHP processing in the presence of oak chips. Meanwhile, the anthocyanin content and wine color intensity decreased in the first 5min of pressure treatment and then increased gradually. The multivariate analysis revealed that "pressure holding time" was the key factor affecting wine physicochemical characteristics during HHP processing in the presence of oak chips. Furthermore, oak chip maceration with and without HHP processing weakened the intensities of several sensory attributes and provided the wine with an artificial taste.
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Affiliation(s)
- Yang Tao
- FRCFT, UCD School of Biosystems Engineering, University College Dublin, National University of Ireland, Agriculture and Food Science Centre, Belfield, Dublin 4, Ireland
| | - Da-Wen Sun
- FRCFT, UCD School of Biosystems Engineering, University College Dublin, National University of Ireland, Agriculture and Food Science Centre, Belfield, Dublin 4, Ireland.
| | - Adrian Górecki
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, Tuwima 10, Olsztyn, Poland
| | - Wioletta Błaszczak
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, Tuwima 10, Olsztyn, Poland
| | - Grzegorz Lamparski
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, Tuwima 10, Olsztyn, Poland
| | - Ryszard Amarowicz
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, Tuwima 10, Olsztyn, Poland
| | - Józef Fornal
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, Tuwima 10, Olsztyn, Poland
| | - Tomasz Jeliński
- Institute of Animal Reproduction and Food Research, Polish Academy of Science, Tuwima 10, Olsztyn, Poland
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45
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Ervin EM, Kariuki JK. Demonstrating the Minimal Impact of Cultivation Conditions on Antioxidants in Fruits and Vegetables by Differential Pulse Voltammetry. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2015. [DOI: 10.1080/10942912.2015.1048354] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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46
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Lesch A, Cortés-Salazar F, Amstutz V, Tacchini P, Girault HH. Inkjet Printed Nanohydrogel Coated Carbon Nanotubes Electrodes For Matrix Independent Sensing. Anal Chem 2015; 87:1026-33. [DOI: 10.1021/ac503748g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Andreas Lesch
- Laboratoire
d’Electrochimie Physique et Analytique, École Polytechnique Fédérale de Lausanne, Station 6, CH-1015 Lausanne, Switzerland
| | - Fernando Cortés-Salazar
- Laboratoire
d’Electrochimie Physique et Analytique, École Polytechnique Fédérale de Lausanne, Station 6, CH-1015 Lausanne, Switzerland
| | - Véronique Amstutz
- Laboratoire
d’Electrochimie Physique et Analytique, École Polytechnique Fédérale de Lausanne, Station 6, CH-1015 Lausanne, Switzerland
| | | | - Hubert H. Girault
- Laboratoire
d’Electrochimie Physique et Analytique, École Polytechnique Fédérale de Lausanne, Station 6, CH-1015 Lausanne, Switzerland
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47
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Antioxidant potential of white grape pomaces: Phenolic composition and antioxidant capacity measured by spectrophotometric and cyclic voltammetry methods. Food Res Int 2014. [DOI: 10.1016/j.foodres.2014.09.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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David IG, Bizgan AMC, Popa DE, Buleandra M, Moldovan Z, Badea IA, Tekiner TA, Basaga H, Ciucu AA. Rapid determination of total polyphenolic content in tea samples based on caffeic acid voltammetric behaviour on a disposable graphite electrode. Food Chem 2014; 173:1059-65. [PMID: 25466125 DOI: 10.1016/j.foodchem.2014.10.139] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 10/23/2014] [Accepted: 10/25/2014] [Indexed: 01/29/2023]
Abstract
The present paper describes the voltammetric behaviour and the quantitative determination of caffeic acid (CA) on a disposable pencil graphite electrode (PGE). The anodic peak current of CA recorded by differential pulse voltammetry (DPV) varies linearly with CA concentration in the range 1×10(-7)-3×10(-3) M. The detection and quantification limits were 8.83×10(-8) M and 2.94×10(-7) M caffeic acid, respectively. The mean recoveries of CA from Turkish green, white and black teas were 98.30%, 99.57% and 91.46%. For these three tea types the corresponding total polyphenolic contents (TPCs) evaluated by DPV on PGE were 35.81, 34.59 and 31.21 mg caffeic acid equivalent/g tea, respectively. These TPC values were in good accordance with those obtained by the Folin-Ciocalteu method. The developed DPV on PGE method constitutes a simple and inexpensive tool for the rapid assessment of TPC of tea samples.
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Affiliation(s)
- Iulia Gabriela David
- Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Av., 030018, District 3, Bucharest, Romania.
| | - Ana-Maria Cristina Bizgan
- Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Av., 030018, District 3, Bucharest, Romania
| | - Dana Elena Popa
- Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Av., 030018, District 3, Bucharest, Romania
| | - Mihaela Buleandra
- Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Av., 030018, District 3, Bucharest, Romania
| | - Zenovia Moldovan
- Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Av., 030018, District 3, Bucharest, Romania
| | - Irinel Adriana Badea
- Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Av., 030018, District 3, Bucharest, Romania
| | - Tuğçe Ayça Tekiner
- Biological Sciences and Bioengineering Program, Sabanci University, 34457 Orhanlı-Tuzla, Istanbul, Turkey
| | - Huveyda Basaga
- Biological Sciences and Bioengineering Program, Sabanci University, 34457 Orhanlı-Tuzla, Istanbul, Turkey
| | - Anton A Ciucu
- Department of Analytical Chemistry, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Av., 030018, District 3, Bucharest, Romania
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49
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Rebelo MJ, Sousa C, Valentão P, Rego R, Andrade PB. Phenolic profile of Douro wines and evaluation of their NO scavenging capacity in LPS-stimulated RAW 264.7 macrophages. Food Chem 2014; 163:16-22. [DOI: 10.1016/j.foodchem.2014.04.070] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/08/2014] [Accepted: 04/15/2014] [Indexed: 10/25/2022]
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50
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A new chemical criteria for white wine: The glutathione equivalent capacity. Food Chem 2014; 153:321-6. [DOI: 10.1016/j.foodchem.2013.12.090] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 10/31/2013] [Accepted: 12/19/2013] [Indexed: 12/12/2022]
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