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Redox Report
Communications in Free Radical Research
Volume 7, 2002 - Issue 1
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Research Articles

Free radical scavenging activity of vanillin and o-vanillin using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical

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Pages 35-40 | Published online: 19 Jul 2013

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Abdollah Zakeri-Siavashani, Mohsen Chamanara, Ehsan Nassireslami, Mahdi Shiri, Mohsen Hoseini-Ahmadabadi & Babak Paknejad. (2022) Three dimensional spongy fibroin scaffolds containing keratin/vanillin particles as an antibacterial skin tissue engineering scaffold. International Journal of Polymeric Materials and Polymeric Biomaterials 71:3, pages 220-231.
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Jude E. Okokon, Patience J. Okokon, Ahsana Dar Farooq & Mohammed Iqbal Choudhary. (2013) Anti-inflammatory and antinociceptive activities of Homalium letestui. Pharmaceutical Biology 51:11, pages 1459-1466.
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Arun K. Sinha, Upendra K. Sharma & Nandini Sharma. (2008) A comprehensive review on vanilla flavor: Extraction, isolation and quantification of vanillin and others constituents. International Journal of Food Sciences and Nutrition 59:4, pages 299-326.
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Andrej Staško, Vlasta Brezová, Stanislav Biskupič & Vladimír Mišík. (2007) The potential pitfalls of using 1,1-diphenyl-2-picrylhydrazyl to characterize antioxidants in mixed water solvents. Free Radical Research 41:4, pages 379-390.
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Safa Faris Kayed. (2023) Synthesis, Characterization, Thermal Stability and Photocatalytic Activity of Hg(II) and Co(II) Complexes of Vanillin. Arabian Journal for Science and Engineering.
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Sruthi N. Kumar, R. Harikumaran Nair & Prakash Kumar B. (2023) Comparative Analysis of Anti-oxidant Potential of Vanillin and Ferulic Acid Invitro. Food and Humanity.
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Luca Carena, Beatrice Zoppi, Fabrizio Sordello, Debora Fabbri, Marco Minella & Claudio Minero. (2023) Phototransformation of Vanillin in Artificial Snow by Direct Photolysis and Mediated by Nitrite. Environmental Science & Technology 57:23, pages 8785-8795.
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Shu-Shun Hsueh, Jian-Hong Lu, Josephine W. Wu, Ta-Hsien Lin & Steven S.-S. Wang. (2021) Protection of human γD-crystallin protein from ultraviolet C-induced aggregation by ortho-vanillin. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 261, pages 120023.
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Xiangkun Wu, Xiaoguo Zhou, Saša Bjelić, Patrick Hemberger & Andras Bodi. (2021) Valence Photoionization and Energetics of Vanillin, a Sustainable Feedstock Candidate. The Journal of Physical Chemistry A 125:16, pages 3327-3340.
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Hosni Cherif, Daniel G Bisson, Matthew Mannarino, Oded Rabau, Jean A Ouellet & Lisbet Haglund. (2020) Senotherapeutic drugs for human intervertebral disc degeneration and low back pain. eLife 9.
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A.C. Gonzalez-Baro, D. Izquierdo, A. Heras & A. Colina. (2020) UV/Vis spectroelectrochemistry of o-vanillin: Study of the antioxidant properties. Journal of Electroanalytical Chemistry 859, pages 113844.
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Clara Iannuzzi, Margherita Borriello, Gaetano Irace, Marcella Cammarota, Antimo Di Maro & Ivana Sirangelo. (2017) Vanillin Affects Amyloid Aggregation and Non-Enzymatic Glycation in Human Insulin. Scientific Reports 7:1.
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Sawsan Abuhamdah, Duaa Thalji, Naji Abuirmeile, Anas Bahnassi, Izzedin Salahat & Amjad Abuirmeile. (2017) Behavioral and Neurochemical Alterations Induced by Vanillin in a Mouse Model of Alzheimer’s Disease. International Journal of Pharmacology 13:6, pages 573-582.
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Saurabh Awasthi & N.T. Saraswathi. (2016) Vanillin restrains non-enzymatic glycation and aggregation of albumin by chemical chaperone like function. International Journal of Biological Macromolecules 87, pages 1-6.
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Amira M. Abo-youssef. (2016) Possible antidepressant effects of vanillin against experimentally induced chronic mild stress in rats. Beni-Suef University Journal of Basic and Applied Sciences 5:2, pages 187-192.
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Luciana Facco Dalmolin, Najeh Maissar Khalil & Rubiana Mara Mainardes. (2016) Delivery of vanillin by poly(lactic-acid) nanoparticles: Development, characterization and in vitro evaluation of antioxidant activity. Materials Science and Engineering: C 62, pages 1-8.
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A. Moreno Betancourt, L. H. Coutinho, R. B. Bernini, C. E. V. de Moura, A. B. Rocha & G. G. B. de Souza. (2016) VUV and soft x-ray ionization of a plant volatile: Vanillin (C8H8O3). The Journal of Chemical Physics 144:11.
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D. Yancheva, E. Velcheva, Z. Glavcheva, B. Stamboliyska & A. Smelcerovic. (2016) Insights in the radical scavenging mechanism of syringaldehyde and generation of its anion. Journal of Molecular Structure 1108, pages 552-559.
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Asli Celebioglu, Fatma Kayaci-Senirmak, Semran İpek, Engin Durgun & Tamer Uyar. (2016) Polymer-free nanofibers from vanillin/cyclodextrin inclusion complexes: high thermal stability, enhanced solubility and antioxidant property. Food & Function 7:7, pages 3141-3153.
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Aytül Hamzalıoğlu & Vural Gökmen. 2016. Acrylamide in Food. Acrylamide in Food 355 376 .
Sindhu Mathew, T. Emilia Abraham & Zainul Akmar Zakaria. (2015) Reactivity of phenolic compounds towards free radicals under in vitro conditions. Journal of Food Science and Technology 52:9, pages 5790-5798.
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Seong-Ho Kim. (2014) Optimization of Ethanol Extraction Conditions for Artemisis capillaris Effective Components Using Response Surface Methodology. Journal of the Korean Society of Food Science and Nutrition 43:5, pages 741-748.
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Kikkeri N. Mohana & Chikkur B. Pradeep Kumar. (2013) Synthesis and Antioxidant Activity of 2-Amino-5-methylthiazol Derivatives Containing 1,3,4-Oxadiazole-2-thiol Moiety. ISRN Organic Chemistry 2013, pages 1-8.
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Sakina Yagi, Natalia Drouart, Frédéric Bourgaud, Max Henry, Yves Chapleur & Dominique Laurain-Mattar. (2013) Antioxidant and antiglycation properties of Hydnora johannis roots. South African Journal of Botany 84, pages 124-127.
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Yujung LeeJeongil KwonGilson KhangDongwon Lee. (2012) Reduction of Inflammatory Responses and Enhancement of Extracellular Matrix Formation by Vanillin-Incorporated Poly(Lactic- co -Glycolic Acid) Scaffolds . Tissue Engineering Part A 18:19-20, pages 1967-1978.
Crossref
Si-Seon Lee, Ajay Kalanjana Monnappa & Robert J. Mitchell. (2012) Biological activities of lignin hydrolysate-related compounds. BMB Reports 45:5, pages 265-274.
Crossref
José E. Galgani, Bárbara Núñez & Luis A. Videla. (2012) Vanillin suppresses Kupffer cell-related colloidal carbon-induced respiratory burst activity in isolated perfused rat liver: anti-inflammatory implications. Food & Function 3:12, pages 1319.
Crossref
Ana C. González-Baró, Reinaldo Pis-Diez, Beatriz S. Parajón-Costa & Nicolás A. Rey. (2012) Spectroscopic and theoretical study of the o-vanillin hydrazone of the mycobactericidal drug isoniazid. Journal of Molecular Structure 1007, pages 95-101.
Crossref
Akihiro Tai, Takeshi Sawano, Futoshi Yazama & Hideyuki Ito. (2011) Evaluation of antioxidant activity of vanillin by using multiple antioxidant assays. Biochimica et Biophysica Acta (BBA) - General Subjects 1810:2, pages 170-177.
Crossref
Ghanya Al-Naqeb, Maznah Ismail, Gururaj Bagalkotkar & Hadiza Altine Adamu. (2010) Vanillin rich fraction regulates LDLR and HMGCR gene expression in HepG2 cells. Food Research International 43:10, pages 2437-2443.
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RAJBIR SINGH, BIKRAM SINGH, NEERAK KUMARB & SAROJ ARORA. (2010) ANTIOXIDANT ACTIVITY OF TRIPHALA A COMBINATION OF TERMINALIA CHEBULA, TERMINALIA BELLERICA AND EMBLICA OFFICINALIS. Journal of Food Biochemistry 34, pages 222-232.
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Evelina A. Velcheva, Bistra A. Stamboliyska & Pavlina J. Boyadjieva. (2010) DFT and experimental study on the IR spectra and structure of 2-hydroxy-3-methoxybenzaldehyde (o-vanillin) and its oxyanion. Journal of Molecular Structure 963:1, pages 57-62.
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Christel Brunschwig, François Xavier Collard, Jean-Pierre Bianchini & Phila Raharivelomanana. (2009) Evaluation of Chemical Variability of Cured Vanilla Beans ( Vanilla tahitensis and Vanilla planifolia ) . Natural Product Communications 4:10, pages 1934578X0900401.
Crossref
Ioannis Mourtzinos, Spyros Konteles, Nick Kalogeropoulos & Vaios T. Karathanos. (2009) Thermal oxidation of vanillin affects its antioxidant and antimicrobial properties. Food Chemistry 114:3, pages 791-797.
Crossref
Umang SINGH, Amit KUNWAR, R. SRINIVASAN, M. J. NANJAN & K. Indira PRIYADARSINI. (2009) Differential Free Radical Scavenging Activity and Radioprotection of Caesalpinia Digyna Extracts and its Active Constituent. Journal of Radiation Research 50:5, pages 425-433.
Crossref
Jong-Rok Jeon, Kumarasamy Murugesan, Young-Mo Kim, Eun-Ju Kim & Yoon-Seok Chang. (2008) Synergistic effect of laccase mediators on pentachlorophenol removal by Ganoderma lucidum laccase. Applied Microbiology and Biotechnology 81:4, pages 783-790.
Crossref
K. Srinivasan, K. Platel & M. V. L. Rao. (2008) Hypotriglyceridemic effect of dietary vanillin in experimental rats. European Food Research and Technology 228:1, pages 103-108.
Crossref
R. Salazar, P.A. Navarrete-Encina, C. Camargo, J.A. Squella & Luis J. Núñez-Vergara. (2008) Electrochemical oxidation of C4-vanillin- and C4-isovanillin-1,4-dihydropyridines in aprotic medium: Reactivity towards free radicals. Journal of Electroanalytical Chemistry 622:1, pages 29-36.
Crossref
Dharmendra Kumar Maurya, Soumyakanti Adhikari, Cherupally Krishnan K. Nair & Thomas P.A. Devasagayam. (2007) DNA protective properties of vanillin against γ-radiation under different conditions: Possible mechanisms. Mutation Research/Genetic Toxicology and Environmental Mutagenesis 634:1-2, pages 69-80.
Crossref
Zhou Nie, Ke Jian Liu, Chuan-Jian Zhong, Lan-Fen Wang, Ying Yang, Qiu Tian & Yang Liu. (2007) Enhanced radical scavenging activity by antioxidant-functionalized gold nanoparticles: A novel inspiration for development of new artificial antioxidants. Free Radical Biology and Medicine 43:9, pages 1243-1254.
Crossref
Atanu Barik, Beena Mishra, Amit Kunwar, Ramakant M. Kadam, Liang Shen, Sabari Dutta, Subhash Padhye, Ashis K. Satpati, Hong-Yu Zhang & K. Indira Priyadarsini. (2007) Comparative study of copper(II)–curcumin complexes as superoxide dismutase mimics and free radical scavengers. European Journal of Medicinal Chemistry 42:4, pages 431-439.
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Audrey A. King, Daniel T. Shaughnessy, Kanae Mure, Joanna Leszczynska, William O. Ward, David M. Umbach, Zongli Xu, Danica Ducharme, Jack A. Taylor, David M. DeMarini & Catherine B. Klein. (2007) Antimutagenicity of cinnamaldehyde and vanillin in human cells: Global gene expression and possible role of DNA damage and repair. Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis 616:1-2, pages 60-69.
Crossref
Soumyakanti Adhikari, Kavirayani Indira Priyadarsini & Tulsi Mukherjee. (2007) Physico-Chemical Studies on the Evaluation of the Antioxidant Activity of Herbal Extracts and Active Principles of Some Indian Medicinal Plants. Journal of Clinical Biochemistry and Nutrition 40:3, pages 174-183.
Crossref
S. Kaviarasan, G.H. Naik, R. Gangabhagirathi, C.V. Anuradha & K.I. Priyadarsini. (2007) In vitro studies on antiradical and antioxidant activities of fenugreek (Trigonella foenum graecum) seeds. Food Chemistry 103:1, pages 31-37.
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Massimo Curini, Francesco Epifano, Salvatore Genovese, Luigi Menghini, Donata Ricci, Daniele Fraternale, Laura Giamperi, Anahi Bucchini & Emanuele Bellacchio. (2019) Lipoxygenase Inhibitory Activity of Boropinic Acid, Active Principle of Boronia Pinnata . Natural Product Communications 1:12, pages 1934578X0600101.
Crossref
Daniel T. Shaughnessy, Roel M. Schaaper, David M. Umbach & David M. DeMarini. (2006) Inhibition of spontaneous mutagenesis by vanillin and cinnamaldehyde in Escherichia coli: Dependence on recombinational repair. Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis 602:1-2, pages 54-64.
Crossref
Atanu Barik, K. Indira Priyadarsini & Hari Mohan. (2006) Reactive oxygen and nitrogen species (RONS) scavenging reactions of o-vanillin: Pulse radiolysis and stopped flow studies. Research on Chemical Intermediates 32:9, pages 837-845.
Crossref
Bertrand Payet, Alain Shum Cheong Sing & Jacqueline Smadja. (2006) Comparison of the Concentrations of Phenolic Constituents in Cane Sugar Manufacturing Products with Their Antioxidant Activities. Journal of Agricultural and Food Chemistry 54:19, pages 7270-7276.
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Ouided Friaa & Daniel Brault. (2006) Kinetics of the reaction between the antioxidant Trolox? and the free radical DPPH? in semi-aqueous solution. Organic & Biomolecular Chemistry 4:12, pages 2417.
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Atanu Barik, Beena Mishra, Liang Shen, Hari Mohan, R.M. Kadam, S. Dutta, Hong-Yu Zhang & K. Indira Priyadarsini. (2005) Evaluation of a new copper(II)–curcumin complex as superoxide dismutase mimic and its free radical reactions. Free Radical Biology and Medicine 39:6, pages 811-822.
Crossref
G. H. Naik, K. I. Priyadarsini, R. G. Bhagirathi, B. Mishra, K. P. Mishra, M. M. Banavalikar & Hari Mohan. (2005) In vitro antioxidant studies and free radical reactions of triphala, an ayurvedic formulation and its constituents . Phytotherapy Research 19:7, pages 582-586.
Crossref
G.H. Naik, K.I. Priyadarsini, D.B. Naik, R. Gangabhagirathi & H. Mohan. (2004) Studies on the aqueous extract of Terminalia chebula as a potent antioxidant and a probable radioprotector. Phytomedicine 11:6, pages 530-538.
Crossref
A. Barik, K.I. Priyadarsini & Hari Mohan. (2004) Redox reactions of 2-hydroxy-3-methoxybenzaldehyde (o-vanillin) in aqueous solution. Radiation Physics and Chemistry 70:6, pages 687-696.
Crossref
S. Santosh Kumar, K. Indira Priyadarsini & Krishna B. Sainis. (2003) Inhibition of Peroxynitrite-Mediated Reactions by Vanillin. Journal of Agricultural and Food Chemistry 52:1, pages 139-145.
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