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Dassamiour S, Meguellati S, Lamraoui H, Bensaad MS, Sami R, Alshehry G, Althubaiti EH, Al-Meshal AS. HPLC-DAD phenolic screening and in vitro assessment of antimicrobial, antioxidant and anti-inflammatory activities of Tanteboucht dates. RSC Adv 2022; 12:13330-13338. [PMID: 35520118 PMCID: PMC9066423 DOI: 10.1039/d2ra01630c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 04/26/2022] [Indexed: 01/16/2023] Open
Abstract
The date palm (Phoenix dactylifera L.) is one of the most important crops in arid and semi-arid zones. Date fruit occupies a good place in traditional medicine among the Saharan residents, due to its therapeutic virtues; although there may be several therapeutic virtues yet to be discovered. The aim of this study was to investigate the phytochemical and pharmacological properties of the hexanic (EHx), chloroformic (ECh), ethyl acetate (EAc) and aqueous (EAq) extracts of Tanteboucht pulp. The phytochemical characterization and estimation of phenolic compounds were done based on an HPLC-DAD approach. The antioxidant activity was evaluated by a DPPH scavenging effect test. The sensitivity of 7 bacterial strains and Candida albicans to Tanteboucht extracts was tested using the diffusion disc on agar medium method. The membrane stabilization test was used to determine the in vitro anti-inflammatory effect of the fruit extracts. Fourteen phenolic compounds were detected in organic extracts and EAc was the richest followed by ECh and finally EHx which was very poor in these molecules. All extracts showed antioxidant, anti-inflammatory and antimicrobial properties which differ in rate. Indeed, ECh had the greatest scavenging effect on DPPH, followed by EAc and then EAq. EAc was the most potent inhibitor of microbial strains. EAc and ECh were more efficient at membrane stabilization followed by EAq and the three extracts had more anti-inflammatory capacity than the positive control acetyl salicylic acid. The obtained considerable activities were significantly correlated with flavonoid and tannin contents in the extracts.
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Affiliation(s)
- Saliha Dassamiour
- Laboratory of Biotechnology of Bioactive Molecules and Cellular Physiopathology (LBMBPC), Department of Microbiology and Biochemistry, Faculty of Natural and Life Sciences, University Batna 2 Fesdis Batna 05078 Algeria
- Department of Microbiology and Biochemistry, Faculty of Natural and Life Sciences, University Batna 2 Fesdis Batna 05078 Algeria
| | - Selsabil Meguellati
- Department of Microbiology and Biochemistry, Faculty of Natural and Life Sciences, University Batna 2 Fesdis Batna 05078 Algeria
| | - Hdouda Lamraoui
- Department of Microbiology and Biochemistry, Faculty of Natural and Life Sciences, University Batna 2 Fesdis Batna 05078 Algeria
| | - Mohamed Sabri Bensaad
- Laboratory of Biotechnology of Bioactive Molecules and Cellular Physiopathology (LBMBPC), Department of Microbiology and Biochemistry, Faculty of Natural and Life Sciences, University Batna 2 Fesdis Batna 05078 Algeria
- Laboratory of Cellular and Molecular Physio-Toxicology-Pathology and Biomolecules (LPTPCMB), Faculty of Natural and Life Sciences, University Batna 2 Fesdis Batna 05078 Algeria
| | - Rokayya Sami
- Department of Food Science and Nutrition, College of Sciences, Taif University P.O. 11099 Taif 21944 Saudi Arabia
| | - Garsa Alshehry
- Department of Food Science and Nutrition, College of Sciences, Taif University P.O. 11099 Taif 21944 Saudi Arabia
| | - Eman Hillal Althubaiti
- Department of Biotechnology, Faculty of Science, Taif University P.O. 11099 Taif 21944 Saudi Arabia
| | - Areej Suliman Al-Meshal
- Department of Biology, College of Science and Humanities in Al-Kharj, Prince Sattam bin Abdulaziz University Al-Kharj 11942 Saudi Arabia
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Zhiltsova EP, Ibatullina MR, Lukashenko SS, Kutyreva MP, Zakharova LY. Spectrophotometric study of quercetin in metallomicellar solutions of 1-hexadecyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide complex with copper dibromide. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.091] [Citation(s) in RCA: 8] [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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Wang WJ, Wei WJ, Liao RZ. Deciphering the chemoselectivity of nickel-dependent quercetin 2,4-dioxygenase. Phys Chem Chem Phys 2018; 20:15784-15794. [DOI: 10.1039/c8cp02683a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
QM/MM calculations were performed to elucidate the reaction mechanism and chemoselectivity of 2,4-QueD. The protonation state of the first-shell ligand Glu74 plays an important role in dictating the selectivity.
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Affiliation(s)
- Wen-Juan Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica
- Hubei Key Laboratory of Materials Chemistry and Service Failure
- School of Chemistry and Chemical Engineering
| | - Wen-Jie Wei
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica
- Hubei Key Laboratory of Materials Chemistry and Service Failure
- School of Chemistry and Chemical Engineering
| | - Rong-Zhen Liao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage
- Ministry of Education
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica
- Hubei Key Laboratory of Materials Chemistry and Service Failure
- School of Chemistry and Chemical Engineering
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Amorati R, Baschieri A, Cowden A, Valgimigli L. The Antioxidant Activity of Quercetin in Water Solution. Biomimetics (Basel) 2017; 2:E9. [PMID: 31105172 PMCID: PMC6352608 DOI: 10.3390/biomimetics2030009] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 06/19/2017] [Accepted: 06/22/2017] [Indexed: 01/11/2023] Open
Abstract
Despite its importance, little is known about the absolute performance and the mechanism for quercetin's antioxidant activity in water solution. We have investigated this aspect by combining differential oxygen-uptake kinetic measurements and B3LYP/6311+g (d,p) calculations. At pH = 2.1 (30 °C), quercetin had modest activity (kinh = 4.0 × 103 M-1 s-1), superimposable to catechol. On raising the pH to 7.4, reactivity was boosted 40-fold, trapping two peroxyl radicals in the chromen-4-one core and two in the catechol with kinh of 1.6 × 105 and 7.0 × 104 M-1 s-1. Reaction occurs from the equilibrating mono-anions in positions 4' and 7 and involves firstly the OH in position 3, having bond dissociation enthalpies of 75.0 and 78.7 kcal/mol, respectively, for the two anions. Reaction proceeds by a combination of proton-coupled electron-transfer mechanisms: electron⁻proton transfer (EPT) and sequential proton loss electron transfer (SPLET). Our results help rationalize quercetin's reactivity with peroxyl radicals and its importance under biomimetic settings, to act as a nutritional antioxidant.
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Affiliation(s)
- Riccardo Amorati
- University of Bologna, Department of Chemistry "G. Ciamician", Via S. Giacomo 11, 40126 Bologna, Italy.
| | - Andrea Baschieri
- University of Bologna, Department of Chemistry "G. Ciamician", Via S. Giacomo 11, 40126 Bologna, Italy.
| | - Adam Cowden
- School of Chemistry (Rm 267), University of Edinburgh, West Mains Road, Edinburgh EH9 3FJ, UK.
| | - Luca Valgimigli
- University of Bologna, Department of Chemistry "G. Ciamician", Via S. Giacomo 11, 40126 Bologna, Italy.
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Zhou H, Wang X. Spectrometric study on the interaction of sodium cholate aggregates with quercetin. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.04.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Protti S, Mezzetti A. Any colour you like. Excited state and ground state proton transfer in flavonols and applications. PHOTOCHEMISTRY 2012. [DOI: 10.1039/9781849734882-00295] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The photoinduced and ground state proton transfer processes occurring in flavonols are responsible for their multi-wavelength emission. This peculiar behavior has touched on a wide range of research areas, ranging from biology to chemistry of materials leading, among others, to the development of fluorescent probes for physical and biophysical parameters, laser dyes, and wavelentgh shifting devices. This account aims to be a brief introduction to the multi-faceted applications of flavonols.
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Affiliation(s)
- Stefano Protti
- PhotoGreen Lab Department of Chemistry University of Pavia, V.Le Taramelli 12, 27100 Pavia Italy
| | - Alberto Mezzetti
- Laboratoire de Photocatalyse et BiohydrogèneSB2SM, CNRS URA 2096, CEA-Saclay, DSV/iBiTecS, 91191 Gif-sur-Yvette cedexFrance
- Laboratoire de Spectrochimie Infrarouge et Raman UMR CNRS 8516Université de Sciences et Technologies de Lille, Bat. C5, Cité Scientifique, 59655, Villeneuve d’AscqFrance
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Mendoza-Wilson AM, Santacruz-Ortega H, Balandrán-Quintana RR. Spectroscopic and computational study of the major oxidation products formed during the reaction of two quercetin conformers with a free radical. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 81:481-488. [PMID: 21767979 DOI: 10.1016/j.saa.2011.06.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2011] [Revised: 06/11/2011] [Accepted: 06/16/2011] [Indexed: 05/31/2023]
Abstract
The goal of this research was to determine whether there are differences between the major oxidation products formed during the reaction of quercetin unhydrate (QUH) or quercetin dihydrate (QDH) with the 2,2-diphenyl-1-picrylhydrazyl free radical (DPPH), as well as to identify some properties of these products. The study was carried out employing spectroscopic and computational methods, in order to know the effect of different conformations of quercetin on the mechanism of free radical scavenging. The results demonstrated that although the same oxidation products may be formed from QUH and QDH, their properties and the predominant product were different in each. The o-quinone was the predominant oxidation product of QUH, whereas in QDH it was established an equilibrium between o-quinone and extended p-quinone.
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Affiliation(s)
- Ana María Mendoza-Wilson
- Coordinación de Tecnología de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera a la Victoria km. 0.6, Hermosillo, Sonora 83304, Mexico.
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Mezzetti A, Protti S, Lapouge C, Cornard JP. Protic equilibria as the key factor of quercetin emission in solution. Relevance to biochemical and analytical studies. Phys Chem Chem Phys 2011; 13:6858-64. [PMID: 21390357 DOI: 10.1039/c0cp00714e] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A detailed spectrofluorimetric study on quercetin in aqueous solution proves that its anionic forms are responsible for a strong fluorescence enhancement observed at pH > 6. Anion fluorescence is also observed in organic solvents with strong hydrogen bond acceptor properties. The results provide a new interpretation of biophysical and analytical literature data where the fluorescence of the anionic forms of quercetin has never been explicitly taken into account. In particular, comparison with published binding studies strongly suggests that quercetin deprotonation and consequent fluorescence enhancement takes place when the flavonoid binds to several biological macromolecules. This observation can be very helpful in the understanding at a molecular level of the interaction between quercetin and the biomolecule.
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Affiliation(s)
- Alberto Mezzetti
- Laboratoire de Photocatalyse et Biohydrogène, SB2SM, CNRS URA 2096, CEA-Saclay, DSV/iBiTecS, 91191 Gif-sur-Yvette cedex, France.
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Musialik M, Kuzmicz R, Pawłowski TS, Litwinienko G. Acidity of hydroxyl groups: an overlooked influence on antiradical properties of flavonoids. J Org Chem 2009; 74:2699-709. [PMID: 19275193 DOI: 10.1021/jo802716v] [Citation(s) in RCA: 241] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions of 10 flavonoids with 2,2-diphenyl-1-picrylhydrazyl radical (dpph(*)) carried out in alcohols always occur significantly faster than in acidified alcohols or in dioxane. These fast kinetics benefit from the contribution of the electron transfer from a flavonoid anion to a radical, a mechanism known as Sequential Proton-Loss Electron-Transfer (SPLET), which adds to the kinetics of single-step Hydrogen Atom Transfer (HAT)/Proton Coupled Electron Transfer (PCET) processes (see Acc. Chem. Res. 2007, 40 , 222.). The domination of SPLET over HAT/PCET in case of a flavonoid reacting with electron-deficient radicals such as peroxyls or dpph(*) in polar solvents explains the enhancement of antioxidant activity of 3-hydroxyflavone. It also elucidates the great acceleration in the reactions of dpph(*) with quercetin, morin, galangin, and 7,8-dihydroxyflavone. The analysis of structure-acidity and structure-activity relationships for 10 flavonoids clearly indicates that hydroxyl group at position 7 is the most acidic site. Thus, in polar solvents this group can participate in radical reaction via SPLET. In nonpolar solvents the most active site in quercetin (a flavonoid antioxidant commonly found in plants) is 3',4'-dihydroxyl moiety and HAT/PCET occurs. However, in ionization-supporting solvents an anion formed at position 7 is responsible for very fast kinetics of quercetin/dpph(*) reaction because both mechanisms participate: HAT (from catechol moiety in ring B) and SPLET (from ionized 7-hydroxyl in ring A). Because of conjugation of rings A, B, and C the final structure of the formed quercetin radical (or quercetin anion radical) is the same for the SPLET and HAT/PCET mechanisms.
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Affiliation(s)
- Malgorzata Musialik
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
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Borghetti GS, Lula IS, Sinisterra RD, Bassani VL. Quercetin/beta-cyclodextrin solid complexes prepared in aqueous solution followed by spray-drying or by physical mixture. AAPS PharmSciTech 2009; 10:235-42. [PMID: 19280349 DOI: 10.1208/s12249-009-9196-3] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2008] [Accepted: 01/31/2009] [Indexed: 01/08/2023] Open
Abstract
The present study was designed to investigate the influence of operating conditions (temperature, stirring time, and excess amount of quercetin) on the complexation of quercetin with beta-cyclodextrin using a 2(3) factorial design. The highest aqueous solubility of quercetin was reached under the conditions 37 degrees C/24 h/6 mM of quercetin. The stoichiometric ratio (1:1) and the apparent stability constant (Ks = 230 M(-1)) of the quercetin/beta-cyclodextrin complex were determined using phase-solubility diagrams. The semi-industrial production of a 1:1 quercetin/beta-cyclodextrin solid complex was carried out in aqueous solution followed by spray-drying. Although the yield of the spray-drying process was adequate (77%), the solid complex presented low concentration of quercetin (0.14%, w/w) and, thus, low complexation efficiency. The enhancement of aqueous solubility of quercetin using this method was limited to 4.6-fold in the presence of 15 mM of beta-cyclodextrin. Subsequently, an inclusion complex was prepared via physical mixture of quercetin with beta-cyclodextrin (molar ratio of 1:1 and quercetin concentration of 23% (w/w)) and characterized using infrared spectroscopy, differential scanning calorimetry, nuclear magnetic resonance spectroscopy, and scanning electron microscopy analyses. The enhancement of aqueous solubility of quercetin using this method was 2.2-fold, similar to that found in the complex prepared in aqueous solution before the spray-drying process (2.5-fold at a molar ratio of 1:1, i.e., 6 mM of quercetin and 6 mM of beta-cyclodextrin).
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Transport of quercetin di-sodium salt in the human intestinal epithelial Caco-2 cell monolayer 139. Eur J Drug Metab Pharmacokinet 2007; 32:139-47. [DOI: 10.1007/bf03190476] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dubuisson MLN, Rees JF, Marchand-Brynaert J. Coelenterazine (marine bioluminescent substrate): a source of inspiration for the discovery of novel antioxidants. Drug Dev Ind Pharm 2006; 31:827-49. [PMID: 16305995 DOI: 10.1080/03639040500271803] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Coelenterazine and derivatives were initially considered in the scientific community for their (bio)luminescent properties. Now, another interest of such hetero-bicycles has been pointed out by the discovery of remarkable antioxidative properties, and an unique mode of action as a "cascade": the mother-compound (imidazolopyrazinone) is transformed by ROS into a daughter-compound (2-amino-pyrazine) also endowed with antioxidative properties. This review illustrates the therapeutic potential of synthetic imidazolopyrazinones (coelenterazine analogues): chemical reactivity assays with singulet oxygen, radical anion superoxide, peroxynitrite, and radicals formed during lipid and LDL peroxidation, cellular tests of protection against oxidative stress using keratinocyte, hepatocyte, neuronal and erythrocyte cells, and finally in vivo evaluation in a hamster model of ischemia-reperfusion, are fully described.
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Affiliation(s)
- M L N Dubuisson
- Unité de Biologie Animale, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
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Chen YK, Li X, Chen SQ, Zeng S. Heterologous expression of active human uridine diphosphate glucuronosyltransferase 1A3 in Chinese hamster lung cells. World J Gastroenterol 2005; 11:118-21. [PMID: 15609409 PMCID: PMC4205369 DOI: 10.3748/wjg.v11.i1.118] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To obtain the active human recombinant uridine diphosphate glucuronosyltransferase 1A3 (UGT1A3) enzyme from Chinese hamster lung (CHL) cells.
METHODS: The full-length UGT1A3 gene was amplified by reverse transcription-polymerase chain reaction (RT-PCR) using total RNA from human liver as template. The correct fragment confirmed by sequencing was subcloned into the mammalian expression vector pcDNA3.1 (+), and the recombinant vector was transfected into CHL cells using a calcium phosphate method. Expressed UGT1A3 protein was prepared from CHL cells resistant to neomycin (G418). Then the protein was added into a reaction mixture for glucuronidation of quercetin. The glucuronidation activity of UGT1A3 was determined by reverse phase-high performance liquid chromatography (RP-HPLC) coupled with a diode array detector (DAD). The quercetin glucuronide was confirmed by hydrolysis with β-glucuronidase. Control experiments were performed in parallel. The transcriptions of recombinants were also determined by RT-PCR.
RESULTS: The gene was confirmed to be an allele (UGT1A3-3) of UGT1A3 by DNA sequencing. The fragment was introduced into pcDNA3.1 (+) successfully. Several colonies were obtained under the selection pressure of G418. The result of RT-PCR showed transcription of recombinants in mRNA level. Glucuronidation assay and HPLC analysis indicated UGT1A3 expressed heterologously in CHL cells was in an active form, and one of the gulcuronides corresponding to quercetin was also detected.
CONCLUSION: Correct sequence of UGT1A3 gene can be obtained, and active UGT1A3 enzyme is expressed heterologously in CHL cells.
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Affiliation(s)
- Ya-Kun Chen
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310031, Zhejiang Province, China
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