1
|
Hurkul MM, Cetinkaya A, Yayla S, Kaya SI, Budak F, Tok KC, Gumustas M, Uzun L, Ozkan SA. Highly selective and sensitive molecularly imprinted sensors for the electrochemical assay of quercetin in methanol extracts of Rubus sanctus and Fragaria vesca. Talanta 2024; 273:125883. [PMID: 38521023 DOI: 10.1016/j.talanta.2024.125883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 01/26/2024] [Accepted: 03/06/2024] [Indexed: 03/25/2024]
Abstract
Quercetin (QUE) is a powerful antioxidant and one of the common phenolic compounds found in plants, vegetables, and fruits, which has shown many pharmacological activities. The complex nature of the matrix in which QUE is found and its importance and potential uses in diverse applications force the researchers to develop selective and sensitive sensors. In the present work, a novel molecularly imprinted polymer (MIP)-based electrochemical sensor was fabricated for the selective and sensitive determination of the QUE in plant extracts and food supplements. Tryptophan methacrylate (TrpMA) was chosen as the functional monomer, whereas the photopolymerization (PP) method was applied using a glassy carbon electrode (GCE). Electrochemical and morphological characterizations of the developed sensor (TrpMA@QUE/MIP-GCE) were performed using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM). The linear range of the developed sensor was determined to be in the range of 1.0-25 pM, while the limit of detection (LOD) was calculated to be 0.235 pM. In conclusion, The TrpMA@QUE/MIP-GCE sensor might be classified as a promising platform for selective and sensitive determination of QUE not only in plant extracts but also in commercial food supplements because of its reliability, reproducibility, repeatability, stability, and fast response time.
Collapse
Affiliation(s)
- M Mesud Hurkul
- Ankara University, Faculty of Pharmacy, Department of Pharmaceutical Botany, Ankara, Turkiye
| | - Ahmet Cetinkaya
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkiye; Ankara University, Graduate School of Health Sciences, Ankara, Turkiye
| | - Seyda Yayla
- Ankara University, Faculty of Pharmacy, Department of Pharmaceutical Botany, Ankara, Turkiye; Ankara University, Graduate School of Health Sciences, Ankara, Turkiye
| | - S Irem Kaya
- University of Health Sciences, Gulhane Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkiye
| | - Fatma Budak
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkiye; Ankara University, Graduate School of Health Sciences, Ankara, Turkiye
| | - Kenan Can Tok
- Ankara University, Institute of Forensic Sciences, Department of Forensic Toxicology, Ankara, Turkiye
| | - Mehmet Gumustas
- Ankara University, Institute of Forensic Sciences, Department of Forensic Toxicology, Ankara, Turkiye
| | - Lokman Uzun
- Hacettepe University, Faculty of Science, Department of Chemistry, Ankara, Turkiye
| | - Sibel A Ozkan
- Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkiye.
| |
Collapse
|
2
|
Mansour FR, Abdallah IA, Bedair A, Hamed M. Analytical Methods for the Determination of Quercetin and Quercetin Glycosides in Pharmaceuticals and Biological Samples. Crit Rev Anal Chem 2023:1-26. [PMID: 37898879 DOI: 10.1080/10408347.2023.2269421] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Flavonoids are plant-derived compounds that have several health benefits, including antioxidative, anti-inflammatory, anti-mutagenic, and anti-carcinogenic effects. Quercetin is a flavonoid that is widely present in various fruits, vegetables, and drinks. Accurate determination of quercetin in different samples is of great importance for its potential health benefits. This review, is an overview of sample preparation and determination methods for quercetin in diverse matrices. Previous research on sample preparation and determination methods for quercetin are summarized, highlighting the advantages and disadvantages of each method and providing insights into recent developments in quercetin sample treatment. Various analytical techniques are discussed including spectroscopic, chromatographic, electrophoretic, and electrochemical methods for the determination of quercetin and its derivatives in different samples. UV-Vis (Ultraviolet-visible) spectrophotometry is simple and inexpensive but lacks selectivity. Chromatographic techniques (HPLC, GC) offer selectivity and sensitivity, while electrophoretic and electrochemical methods provide high resolution and low detection limits, respectively. The aim of this review is to comprehensively explore the determination methods for quercetin and quercetin glycosides in diverse matrices, with emphasis on pharmaceutical and biological samples. The review also provides a theoretical basis for method development and application for the analysis of quercetin and quercetin glycosides in real samples.
Collapse
Affiliation(s)
- Fotouh R Mansour
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Tanta University, Tanta 31111, Egypt
| | - Inas A Abdallah
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City 32897, Monufia, Egypt
| | - Alaa Bedair
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City 32897, Monufia, Egypt
| | - Mahmoud Hamed
- School of Information Technology and Computer Science (ITCS), Nile University, Giza, Egypt
| |
Collapse
|
3
|
Zhang S, Ning J, Wang Q, Wang W. Fluorescence enhancement of flavonoids and its application in ingredient determination for some traditional Chinese medicines by CE-LIF. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023. [PMID: 37309583 DOI: 10.1039/d3ay00486d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Flavonoids are widely used in the treatment of various diseases due to their antioxidant, anti-inflammatory, anticancer and antiviral properties. Fluorescence detection is rarely applied for the determination of flavonoids because of their weak fluorescence. In this work, a method of fluorescence enhancement of flavonoids was firstly introduced by using sodium acetate for flavonoid derivatization. The study discovered that flavonoids, with a hydroxyl at the C3 position, had the ability to emit strong fluorescence after derivatization. Five flavonoids, kaempferide, galangin, isorhamnetin, kaempferol and quercetin, having a special structure, were selected, derivatized and analyzed by capillary electrophoresis with laser-induced fluorescence detection. Under the optimal conditions, the five flavonoids could be completely separated within 3 minutes. Good linear relationships were obtained for all analytes and the limits of detection for the five flavonoids were in the range of 1.18-4.67 × 10-7 mol L-1. Finally, the method was applied to the determination of flavonoids in five traditional Chinese medicines: aster, chamomile, galangal, tangerine peel and cacumen biotae. Flavonoids were successfully found in all these medicines by the developed method. The recoveries were in the range of 84.2-111%. The method developed in this study was fast, sensitive and reliable for the determination of flavonoids.
Collapse
Affiliation(s)
- Shaoyan Zhang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, School of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
| | - Jinfeng Ning
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, School of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
| | - Qingqing Wang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, School of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
| | - Wei Wang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, School of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China.
| |
Collapse
|
4
|
Hamdan DI, Salah S, Hassan WHB, Morsi M, Khalil HMA, Ahmed-Farid OAH, El-Shiekh RA, Nael MA, Elissawy AM. Anticancer and Neuroprotective Activities of Ethyl Acetate Fractions from Morus macroura Miq. Plant Organs with Ultraperformance Liquid Chromatography-Electrospray Ionization-Tandem Mass Spectrometry Profiling. ACS OMEGA 2022; 7:16013-16027. [PMID: 35571826 PMCID: PMC9096986 DOI: 10.1021/acsomega.2c01148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/13/2022] [Indexed: 06/15/2023]
Abstract
Column chromatography afforded the isolation of seven secondary metabolites (1-(2,4,6-trihydroxy phenyl)-ethanone-4-O-β-d-glucopyranoside, naringenin-7-O-β-d-glucopyranoside, kaempferol-3-O-α-l-rhamnoside, kaempferol-3-O-β-d-glucopyranoside, quercetin-3-O-β-d-glucopyranoside, quercetin-3-O-β-d-galactopyranoside, rutin) from the ethyl acetate (ET) fractions of Morus macroura Miq. stems (S), leaves (L), and fruits (F). Their identification based on ultraviolet (UV), electron ionization (EI), electrospray ionization-mass spectrometry (ESI-MS), and 1D and 2D NMR data. In addition, profiling of ET fractions using ultraperformance liquid chromatography-electrospray ionization-tandem mass spectrometry (UPLC-ESI-MS/MS) resulted in the identification of 82 compounds belonging to different classes, mainly polyphenolic constituents. Chemical profiling as well as molecular docking directed us to biological evaluation. Interestingly, the ET-L fraction exhibited a robust cytotoxic activity against HepG-2, MCF-7, and HELA cell lines. Also, it displayed a neuromodulatory activity against cisplatin neurotoxicity in rats by ameliorating the neurobehavioral dysfunction visualized in the open field and Y-maze test and modulating the neurochemical parameters such as brain amino acid levels (glutamate, aspartate, serine, and histidine), oxidative stress markers (GSH, MDA, and 8-hydroxy-2'-deoxyguanosine), and purinergic cell energy (adenosine triphosphate (ATP) and adenosine monophosphate (AMP)). In conclusion, the isolated compounds (kaempferol-3-O-β-glucoside and quercetin-3-O-β-glucoside) from the ET-L fraction could serve as potent anticancer agents due to their strong antioxidant, in vitro cytotoxicity, and in vivo neuroprotective activity.
Collapse
Affiliation(s)
- Dalia Ibrahim Hamdan
- Department
of Pharmacognosy, Faculty of Pharmacy Menoufia
University, Shibin
Elkom 32511, Egypt
| | - Samia Salah
- Department
of Pharmacognosy, Faculty of Pharmacy, Zagazig
University, Zagazig 44519, Egypt
| | | | - Mai Morsi
- Department
of Pharmacognosy, Faculty of Pharmacy, Zagazig
University, Zagazig 44519, Egypt
| | - Heba Muhammed Ali Khalil
- Department
of Veterinary Hygiene and Management, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
| | | | - Riham Adel El-Shiekh
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, Kasr el Aini
Street, Cairo 11562, Egypt
| | - Manal AbdElaziz Nael
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta University, Tanta 31527, Egypt
| | - Ahmed Mohamed Elissawy
- Pharmacognosy
Department, Faculty of Pharmacy, Ain Shams
University, Abbassia, Cairo 11566, Egypt
| |
Collapse
|
5
|
Kim JH, Kim TJ, Kim HJ, Cho CW, Kim SJ, Cho HS, Kim KT, Kang JS. A new high-performance liquid chromatographic method for the quality control of bioconverted Mori Folium extracts with appropriate marker compounds related to antidiabetes. J Anal Sci Technol 2021. [DOI: 10.1186/s40543-020-00253-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractA HPLC method was developed to assess the enhanced bioactivity of bioconverted Mori Folium (MF) extract and to apply a quality-control system. Liquid-liquid extraction was applied to observe changes in chemical composition through enzymatic bioconversion. The ethyl acetate layer was used for quality control of the anti-diabetic functional MF product. A high-performance liquid chromatography method was developed to analyze five marker compounds (syringaldehyde, trans-caffeic acid, morin 3-O-β-D-glucopyranoside, astragalin, and moracin M 3′-O-β-glucopyranoside) within 60 min. Optimized sample preparation was sonication for 44 min and a water-to-material ratio of 102.5 mL/g by response surface methodology. Comparing MF water extract, trans-caffeic acid and syringaldehyde contents were increased 1.89 times and 2.70 times at Viscozyme-bioconverted material by applying the developed method. This HPLC method can be used to control the quality of bioconverted MF based on suitable bioactive markers and also applied to develop anti-diabetic functional foods containing Mori Folium.
Collapse
|
6
|
Kashchenko NI, Olennikov DN, Chirikova NK. Metabolites of Siberian Raspberries: LC-MS Profile, Seasonal Variation, Antioxidant Activity and, Thermal Stability of Rubus matsumuranus Phenolome. PLANTS (BASEL, SWITZERLAND) 2021; 10:2317. [PMID: 34834680 PMCID: PMC8620613 DOI: 10.3390/plants10112317] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/21/2021] [Accepted: 10/27/2021] [Indexed: 12/13/2022]
Abstract
Rubus matsumuranus H. Lev. & Vaniot, a famous Siberian shrub of the Rosaceae family, is used in the folk medicine of nomads (Buryats, Yakuts, Soyots, and Mongols) as a remedy for the treatment of diseases of the respiratory and hepatobiliary systems. The lack of scientific information on R. matsumuranus leaves contributed to the investigation of the metabolomic profile and biological activity of this plant. In this study, metabolites of R. matsumuranus leaves in three stages (active growth, flowering, and fruiting) were characterised using high-performance liquid chromatography with photodiode array and electrospray ionisation triple quadrupole mass spectrometric detection (HPLC-PDA-ESI-tQ-MS). In total, 63 compounds were identified, including gallic acid derivatives, hydroxycinnamates, catechins, procyanidins, flavonols, and ellagitannins. Lambertianin C (57.11 mg/g of dry weight, DW), miquelianin (39.63 mg/g DW), and kaempferol-3-O-glucuronide (31.18 mg/g DW) were the major compounds in R. matsumuranus leaves. As a result of the HPLC-PDA-based assay to determine the antioxidant activity, it was revealed that lambertianin A, sanguiin H6, lambertianin C, and sanguiin H11 were effective scavengers of free radicals (2,2-diphenyl-1-picrylhydrazyl, DPPH•) and possessed Fe2+-chelating activity. After an investigation of the phenolic content in infusions and decoctions obtained by extraction with water at different temperatures, it was revealed that a hot infusion (80 °C) is a phenolic-rich preparation of R. matsumuranus leaves. Our research suggests that R. matsumuranus leaves are a rich source of phenolic compounds with high antioxidant properties and that this could be a prospective plant for new functional products.
Collapse
Affiliation(s)
- Nina I. Kashchenko
- Laboratory of Medical and Biological Research, Institute of General and Experimental Biology, Siberian Division, Russian Academy of Science, 670047 Ulan-Ude, Russia;
| | - Daniil N. Olennikov
- Laboratory of Medical and Biological Research, Institute of General and Experimental Biology, Siberian Division, Russian Academy of Science, 670047 Ulan-Ude, Russia;
| | - Nadezhda K. Chirikova
- Department of Biology, Institute of Natural Sciences, North-Eastern Federal University, 677027 Yakutsk, Russia;
| |
Collapse
|
7
|
Bian Y, Zhang Y, Zhou Y, Li GH, Feng XS. Progress in the Pretreatment and Analysis of Flavonoids: An Update since 2013. SEPARATION & PURIFICATION REVIEWS 2020. [DOI: 10.1080/15422119.2020.1801469] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Yu Bian
- School of Pharmacy, China Medical University, Shenyang, China
| | - Yuan Zhang
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu Zhou
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Guo-Hui Li
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xue-Song Feng
- School of Pharmacy, China Medical University, Shenyang, China
| |
Collapse
|
8
|
Nitrogen-doped graphene-ionic liquid-glassy carbon microsphere paste electrode for ultra-sensitive determination of quercetin. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104689] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
9
|
Tkacz K, Wojdyło A, Turkiewicz IP, Ferreres F, Moreno DA, Nowicka P. UPLC-PDA-Q/TOF-MS profiling of phenolic and carotenoid compounds and their influence on anticholinergic potential for AChE and BuChE inhibition and on-line antioxidant activity of selected Hippophaë rhamnoides L. cultivars. Food Chem 2020; 309:125766. [DOI: 10.1016/j.foodchem.2019.125766] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/20/2019] [Accepted: 10/21/2019] [Indexed: 12/30/2022]
|
10
|
Passi M, Kumar V, Packirisamy G. Theranostic nanozyme: Silk fibroin based multifunctional nanocomposites to combat oxidative stress. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 107:110255. [PMID: 31761203 DOI: 10.1016/j.msec.2019.110255] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/10/2019] [Accepted: 09/25/2019] [Indexed: 11/16/2022]
Abstract
Multifunctional nanomaterials integrating therapeutic and imaging modalities in one platform have opened a new era in the present therapeutic strategies. In the present study, a multifunctional silk fibroin-based carrier has been designed for the delivery of antioxidant and imaging agents. One-step desolvation method was used to prepare sulforaphane (antioxidant drug) loaded silk fibroin nanoparticles (SFSNPs). These anionic SFSNPs were further coupled with cationic cerium oxide nanoparticles (CeNPs) and PEI passivated carbon dots (CDs) to form self-assembled CeNP-CD@SFSNPs nanocomposites. CDs were synthesized from mulberry leaves (Morus indica) as green source of carbon and bPEI as a passivating agent to get positively charged CDs. The CDs functioned as molecular probes by emitting green fluorescence while the presence of CeNPs augmented the antioxidant potential due to their unique redox property. Time-dependent in vitro release of sulforaphane was fast in acidic pH than under normal physiological conditions. Cytotoxicity studies were performed on L132 normal epithelial lung cell lines and A549 lung cancer cell lines to analyze the toxicity of the nanocomposites. Green fluorescence from the CDs facilitated in fluorescence microscopic imaging and cellular uptake studies. ROS scavenging capability was analyzed by exposing cells to H2O2 stress using flow cytometry and DCFH-DA staining. Overall, the synthesized CeNP-CD@SFSNPs nanocomposites efficiently reduced ROS levels by simultaneously enabling imaging of the cells. Thus, this CeNP-CD@SFSNPs nanocomposite could be a potential candidate for simultaneous imaging and drug delivery against oxidative stress.
Collapse
Affiliation(s)
- Mehak Passi
- Nanobiotechnology Laboratory, Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Vinay Kumar
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India
| | - Gopinath Packirisamy
- Nanobiotechnology Laboratory, Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India; Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
| |
Collapse
|
11
|
Zhou DD, Zhang Q, Li SP, Yang FQ. Capillary electrophoresis in phytochemical analysis (2014-2017). SEPARATION SCIENCE PLUS 2018. [DOI: 10.1002/sscp.201800108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Dong-Dong Zhou
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Qian Zhang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| | - Shao-Ping Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences; University of Macau; Macao SAR P. R. China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing P. R. China
| |
Collapse
|
12
|
Selvarajan S, Suganthi A, Rajarajan M. Fabrication of g-C 3N 4/NiO heterostructured nanocomposite modified glassy carbon electrode for quercetin biosensor. ULTRASONICS SONOCHEMISTRY 2018; 41:651-660. [PMID: 29137797 DOI: 10.1016/j.ultsonch.2017.10.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/29/2017] [Accepted: 10/30/2017] [Indexed: 06/07/2023]
Abstract
Herein, we report a one-pot synthesis of structurally uniform and electrochemically active graphitic carbon nitride/nickel oxide (g-C3N4/NiO) nanocomposite and an investigation on the electrocatalytic oxidation of quercetin (QR). The synthesized g-C3N4/NiO nanocomposite has uniform surface distribution, which was characterized with scanning electron microscopy (SEM). Moreover, the composition of synthesized g-C3N4/NiO nanocomposite was characterized by UV-vis-spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR spectra), BET, SEM and HRTEM. The g-C3N4/NiO was electrochemically treated in 0.1 MPBS solution through cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The peak current response increases linearly with QR concentration from 0.010 μM to 250 µM with a fast response time of less than 2 s and a detection limit of 0.002 μM. To further evaluate the feasibility of using this sensor for real sample analysis, QR content in various real samples including green tea, green apple, honey suckle were determined and satisfactory results were achieved.
Collapse
Affiliation(s)
- S Selvarajan
- PG & Research Department of Chemistry, Thiagarajar College, Madurai 625009, Tamilnadu, India
| | - A Suganthi
- PG & Research Department of Chemistry, Thiagarajar College, Madurai 625009, Tamilnadu, India; Mother Teresa Women's University, Kodaikanal 624 102, Tamilnadu, India.
| | - M Rajarajan
- Directorate of Distance Education, Madurai Kamaraj University, Madurai 625 021, Tamilnadu, India.
| |
Collapse
|
13
|
Montenote MC, Wajsman VZ, Konno YT, Ferreira PC, Silva RMG, Therezo ALS, Silva LP, Martins LPA. Antioxidant effect of Morus nigra on Chagas disease progression. Rev Inst Med Trop Sao Paulo 2017; 59:e73. [PMID: 29116293 PMCID: PMC5679685 DOI: 10.1590/s1678-9946201759073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 08/17/2017] [Indexed: 11/21/2022] Open
Abstract
Considering the widespread popular use of Morus nigra and the amount of scientific information on its antioxidant and anti-inflammatory activity, the effectiveness of this phytotherapeutic compound in the parasitemia progression during the acute phase of Chagas disease and its role in the development of the inflammatory process as well as its effects on the oxidative damage in the chronic phase of infection were evaluated. Thus, 96 male Swiss mice were randomly divided into eight groups, four groups were uninfected controls, and four groups were intraperitoneally infected with 5.0 x 104 blood trypomastigotes forms of T. cruzi QM2 strain. Four batches composed of one uninfected and one infected group were respectively treated with 70% alcohol solution and 25 μL, 50 μL and 75 μL of the phytotherapeutic compound. Levels of antioxidant elements (TBARS, FRAP, GSH and Sulfhydryl groups) were measured in plasma samples. The phytotherapeutic compound's antioxidant activity was measured by polyphenol and total flavonoid quantification, DPPH, NO, and FRAP method. Our results showed that the vehicle influenced some of the results that may have physiological relevance in Chagas disease. However, an important action of M. nigra tincture was observed in the progression of Chagas disease, since our results demonstrated a reduction in parasitemia of treated groups when compared to controls, especially in the group receiving 25 µL. However, in the chronic phase, the 50-µL dosage presented a better activity on some antioxidant defenses and minimized the tissue inflammatory process. Results indicated an important action of M. nigra tincture on the Chagas disease progression.
Collapse
Affiliation(s)
| | - Vithor Zuccaro Wajsman
- Faculdade de Medicina de Marília, Departamento de Parasitologia,
Marília, São Paulo, Brazil
| | - Yoichi Takaki Konno
- Faculdade de Medicina de Marília, Departamento de Parasitologia,
Marília, São Paulo, Brazil
| | - Paulo César Ferreira
- Universidade Estadual Paulista “Júlio de Mesquita Filho”, Laboratório
de Fitoterápicos e Produtos Naturais (FitoLab), Assis, São Paulo, Brazil
| | - Regildo Márcio Gonçalves Silva
- Universidade Estadual Paulista “Júlio de Mesquita Filho”, Laboratório
de Fitoterápicos e Produtos Naturais (FitoLab), Assis, São Paulo, Brazil
| | | | - Luciana Pereira Silva
- Fundação Educacional do Município de Assis, Departamento de
Imunologia, Assis, São Paulo, Brazil
| | | |
Collapse
|
14
|
Singh B, Kumar A, Malik AK. Flavonoids biosynthesis in plants and its further analysis by capillary electrophoresis. Electrophoresis 2017; 38:820-832. [DOI: 10.1002/elps.201600334] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 11/18/2016] [Accepted: 11/21/2016] [Indexed: 01/16/2023]
Affiliation(s)
- Baljinder Singh
- Department of Biotechnology; Panjab University; Chandigarh India
| | - Ashwini Kumar
- Department of Chemistry; Government Post-Graduate College Una; Himachal Pradesh India
| | | |
Collapse
|