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Ali I, Mısır M, Demir E, Dinçer İ, Locatelli M, ALOthman ZA. Nano solid phase micro membrane tip and electrochemical methods for vanillin analysis in chocolate samples. Anal Biochem 2023; 677:115268. [PMID: 37524223 DOI: 10.1016/j.ab.2023.115268] [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: 05/16/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
A polymer-based nanosensor and electrochemical methods were developed for the quantitative analysis of vanillin. The sample preparation was done using nano solid phase micro membrane tip extraction (NSPMMTE). A novel poly(phenylalanine)/TiO2/CPE sensor was built as the working electrode for the first time for the analysis of the vanillin substance. The electrochemical behavior and analytical performance of vanillin were examined in detail by cyclic voltammetry (CV) and differential pulse stripping voltammetry (DPSV) techniques via the oxidation process. The optimized modules of the DPSV technique that affected the vanillin peak current and peak potential were pH, pulse amplitude, step potential, and deposition time. The electroactive surface areas of bare CPE, TiO2/CPE, and poly(phenylalanine)/TiO2/CPE electrodes were found to be 0.135 cm2, 0.155 cm2, and 0.221 cm2, respectively. The limit of detection (LOD) was 32.6 μg/L in the 0.25-15.0 mg/L working range at pH 7.0. The selectivity of the proposed DPSV method for the determination of vanillin on the modified electrode was investigated in the presence of various organic and inorganic substances, and the determination of vanillin with high recovery was achieved with less than 5% relative error. The analytical application was applied in chocolate samples and the DPSV method was found highly efficient, reproducible, and selective.
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Affiliation(s)
- Imran Ali
- Department of Chemistry, Jamia Millia Islamia (Central University), Jamia Nagar, New Delhi, 110025, India.
| | - Murat Mısır
- Kırşehir Ahi Evran University, Faculty of Engineering and Architecture, 40100, Kırşehir, Turkey
| | - Ersin Demir
- Afyonkarahisar Health Sciences University, Faculty of Pharmacy, Department of Analytical Chemistry, 03030, Afyonkarahisar, Turkey
| | - İrem Dinçer
- Afyonkarahisar Health Sciences University, Faculty of Pharmacy, Department of Analytical Chemistry, 03030, Afyonkarahisar, Turkey
| | - Marcello Locatelli
- Department of Pharmacy, University of Chieti-Pescara "G. d'Annunzio ", Via dei Vestini 31, Chieti, 66100, Italy
| | - Zeid A ALOthman
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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CÜCE M. Antioxidant and antimicrobial activities of methanol extracts from Adonis paryadrica (Ranunculaceae) – a critically endangered endemic species growing in the Turkish flora. INTERNATIONAL JOURNAL OF SECONDARY METABOLITE 2023. [DOI: 10.21448/ijsm.1271974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
Abstract
This study was conducted to determine the antioxidant and antimicrobial activities of methanol extract obtained from flower, leaf and root sections of endemic Adonis paryadrica (Boiss.) Kandemir & Aytaç stat. nova. naturally growing in the Turkish flora. The most efficient total phenolic compounds and flavonoid contents were obtained from leaf extract at 21.24 mg GAEs (gallic acid equivalent)/g dw and 54.97 mg REs (rutin equivalent)/g dw, respectively. Among the three different sections of this plant, leaf extracts showed the highest Cupric Reducing Antioxidant Power (CUPRAC) effect with 80.28 µmol TEs (trolox equivalent)/g dw. From the three different sections, the methanol extract of the leaf parts demonstrated strong antibacterial activity against Bacillus subtilis with a 16.1 mm zone diameter. These valuable and current findings from these precious plants, which constitute natural resources in terms of biodiversity, contribute innovative information to the literature on endemic plant species.
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Magesh V, Sundramoorthy AK, Ganapathy D, Atchudan R, Arya S, Alshgari RA, Aljuwayid AM. Palladium Hydroxide (Pearlman's Catalyst) Doped MXene (Ti 3C 2Tx) Composite Modified Electrode for Selective Detection of Nicotine in Human Sweat. BIOSENSORS 2022; 13:bios13010054. [PMID: 36671889 PMCID: PMC9856038 DOI: 10.3390/bios13010054] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/22/2022] [Accepted: 12/24/2022] [Indexed: 05/27/2023]
Abstract
High concentrations of nicotine (40 to 60 mg) are more dangerous for adults who weigh about 70 kg. Herein, we developed an electrochemical transducer using an MXene (Ti3C2Tx)/palladium hydroxide-supported carbon (Pearlman's catalyst) composite (MXene/Pd(OH)2/C) for the identification of nicotine levels in human sweat. Firstly, the MXene was doped with Pd(OH)2/C (PHC) by mechanical grinding followed by an ultrasonication process to obtain the MXene/PHC composite. Secondly, XRD, Raman, FE-SEM, EDS and E-mapping analysis were utilized to confirm the successful formation of MXene/PHC composite. Using MXene/PHC composite dispersion, an MXene/PHC composite-modified glassy carbon electrode (MXene/PHC/GCE) was prepared, which showed high sensitivity as well as selectivity towards nicotine (300 µM NIC) oxidation in 0.1 M phosphate buffer (pH = 7.4) by cyclic voltammetry (CV) and amperometry. The MXene/PHC/GCE had reduced the over potential of nicotine oxidation (about 200 mV) and also enhanced the oxidation peak current (8.9 µA) compared to bare/GCE (2.1 µA) and MXene/GCE (5.5 µA). Moreover, the optimized experimental condition was used for the quantification of NIC from 0.25 µM to 37.5 µM. The limit of detection (LOD) and sensitivity were 27 nM and 0.286 µA µM-1 cm2, respectively. The MXene/PHC/GCE was also tested in the presence of Na+, Mg2+, Ca2+, hydrogen peroxide, acetic acid, ascorbic acid, dopamine and glucose. These molecules were not interfered during NIC analysis, which indicated the good selectivity of the MXene/PHC/GCE sensor. In addition, electrochemical determination of NIC was successfully carried out in the human sweat samples collected from a tobacco smoker. The recovery percentage of NIC in the sweat sample was 97%. Finally, we concluded that the MXene/PHC composite-based sensor can be prepared for the accurate determination of NIC with high sensitivity, selectivity and stability in human sweat samples.
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Affiliation(s)
- Vasanth Magesh
- Centre for Nano-Biosensors, Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Poonamallee High Road, Velappanchavadi, Chennai 600077, Tamil Nadu, India
| | - Ashok K. Sundramoorthy
- Centre for Nano-Biosensors, Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Poonamallee High Road, Velappanchavadi, Chennai 600077, Tamil Nadu, India
| | - Dhanraj Ganapathy
- Centre for Nano-Biosensors, Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Poonamallee High Road, Velappanchavadi, Chennai 600077, Tamil Nadu, India
| | - Raji Atchudan
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Sandeep Arya
- Department of Physics, University of Jammu, Jammu 180006, Jammu and Kashmir, India
| | - Razan A. Alshgari
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmed Muteb Aljuwayid
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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CÜCE M. Antioxidant and antimicrobial activities of methanol extracts from Adonis paryadrica (Asteraceae) – a critically endangered endemic species growing in the Turkish flora. INTERNATIONAL JOURNAL OF SECONDARY METABOLITE 2022. [DOI: 10.21448/ijsm.1071234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
This study was conducted to determine the antioxidant and antimicrobial activities of methanol extract obtained from flower, leaf and root sections of endemic Adonis paryadrica (Boiss.) Kandemir & Aytaç stat. nova. naturally growing in the Turkish flora. The most efficient total phenolic compounds and flavonoid contents were obtained from leaf extract at 21.24 mg GAEs (gallic acid equivalent)/g dw and 54.97 mg REs (rutin equivalent)/g dw, respectively. Among the three different sections of this plant, leaf extracts showed the highest Cupric Reducing Antioxidant Power (CUPRAC) effect with 80.28 µmol TEs (trolox equivalent)/g dw. From the three different sections, the methanol extract of the leaf parts demonstrated strong antibacterial activity against Bacillus subtilis with a 16.1 mm zone diameter. These valuable and current findings from these precious plants, which constitute natural resources in terms of biodiversity, contribute innovative information to the literature on endemic plant species.
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Zilberg RA, Vakulin IV, Teres JB, Galimov II, Maistrenko VN. Rational design of highly enantioselective composite voltammetric sensors using a computationally predicted chiral modifier. Chirality 2022; 34:1472-1488. [PMID: 36076310 DOI: 10.1002/chir.23502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/24/2022] [Accepted: 08/08/2022] [Indexed: 11/06/2022]
Abstract
The use of chiral modifiers is among the simplest and most popular strategies for synthesizing enantioselective voltammetric sensors that are applied for the analysis and discrimination of enantiomerical drugs in various media. The type and structure of the chiral modifier are the key factors for the creation of enantioselectivity to a specified analyte. We suggest a novel approach to the prediction of the quality of a chiral modifier for preparing highly enantioselective sensors. The suggested approach is based on the molecular mechanics modeling of the adsorption of analyte enantiomers on chiral modifiers and on the comparison of the corresponding adsorption energies (ΔEads ). The efficiency of our approach is demonstrated using the example of cyclodextrins and chiral single-wall carbon nanotubes as chiral modifiers, and a wide range of chiral analytes. We found that the experimental enantioselectivity (ϑexp ) measured using voltammetry linearly correlates with ΔEads . The suggested approach also showed good predictive power in application to enantioselective chromatography, which further validates its general applicability.
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Alizadeh M, Demir E, Aydogdu N, Zare N, Karimi F, Kandomal SM, Rokni H, Ghasemi Y. Recent advantages in electrochemical monitoring for the analysis of amaranth and carminic acid food colors. Food Chem Toxicol 2022; 163:112929. [PMID: 35307455 DOI: 10.1016/j.fct.2022.112929] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/09/2022] [Accepted: 03/15/2022] [Indexed: 12/19/2022]
Abstract
This study provides a comprehensive review of the latest developments in the electrochemical impressions of the important dyestuffs including amaranth and carminic acid. Food colors are organic substances that have important effects on human health and food safety. While these substances do not pose a problem when used in the daily intake (ADI) amounts, they harm human health when consumed excessively. Amaranth and carminic acid are synthetic and natural food colors ingredients, respectively. Analysis of these substances in food, pharmaceutical, cosmetic and textile samples is extremely important because of their genotoxicity, cytostatic and cytotoxic effects. Electroanalytical methods, which have great advantages over traditional analytical methods, shed light on the scientific world. Electrochemical monitoring modules, which are fast, simple, accurate, reliable, and highly selective, are promising for the determination of both substances. Until now, amaranth and carminic acid food determinations have been carried out successfully with electrochemical monitoring techniques in many numbers in the literature. Voltammetric techniques are the most widely used among these electroanalytical methods. In particular, square wave and differential pulse voltammetric techniques, which have extraordinary properties, have been heavily preferred. Limits of detection (LOD) comparable to the standard analytical method have been achieved using these methods, which have very quick analysis durations, high precision and accuracy, do not require long preprocessing, and have great selectivity. In addition, more sensitive and selective analyses of amaranth and carminic acid in natural samples were carried out with numerous indicator electrodes. The merits of powerful electrochemical monitoring studies for the determination of both food colors during the last decade are presented in this study. Moreover, parameters such as analytical applications, detection limits, electrochemical methods, selectivity, working electrodes, and working ranges are summarized in detail.
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Affiliation(s)
- Marzieh Alizadeh
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Laboratory of Basic Sciences, Mohammad Rasul Allah Research Tower, Shiraz University of Medical Sciences, Shiraz, 71348-14336, Iran
| | - Ersin Demir
- Afyonkarahisar Health Sciences University, Faculty of Pharmacy, Department of Analytical Chemistry, 03030, Afyonkarahisar, Turkey.
| | - Nida Aydogdu
- Afyonkarahisar Health Sciences University, Faculty of Pharmacy, Department of Analytical Chemistry, 03030, Afyonkarahisar, Turkey
| | - Najmeh Zare
- Department of Chemical Engineering, Quchan University of Technology, Quchan, 9477177870, Iran
| | - Fatemeh Karimi
- Department of Chemical Engineering, Quchan University of Technology, Quchan, 9477177870, Iran.
| | - S Masoud Kandomal
- Department of Chemical Engineering, Quchan University of Technology, Quchan, 9477177870, Iran
| | - Hassan Rokni
- Department of Chemical Engineering, Quchan University of Technology, Quchan, 9477177870, Iran
| | - Younes Ghasemi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Aral T, Önal G, Keskin E, Levent A. Firstly Electrochemical Examination of Myosmine at Glassy Carbon Electrode: Sensitive Determination in Tobacco Leaves by Differential Pulse Voltammetry. ELECTROANAL 2021. [DOI: 10.1002/elan.202100272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tarık Aral
- Department of Chemistry Faculty of Arts and Sciences Batman University Batman Turkey
| | - Günay Önal
- Department of Medical Services and Techniques Health Services Vocational School Batman University Batman Turkey
| | - Ertuğrul Keskin
- Adıyaman University Faculty of Pharmacy Department of Analytical Chemistry Adıyaman Turkey
| | - Abdulkadir Levent
- Department of Chemistry Faculty of Arts and Sciences Batman University Batman Turkey
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Aral T, Önal G, Keskin E, Levent A. Firstly Electrochemical Examination of Myosmine at Glassy Carbon Electrode: Sensitive Determination in Tobacco Leaves by Differential Pulse Voltammetry. ELECTROANAL 2021; 33:2392-2399. [DOI: https:/doi.org/10.1002/elan.202100272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 08/12/2021] [Indexed: 07/01/2024]
Abstract
AbstractIn this study, the electrochemical properties of myosmine, one of the tobacco alkaloids, were investigated for the first time using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques on glassy carbon electrode (GCE). Using GCE with CV technique, it gave an irreversible reduction peak with diffusion control at about −1.38 V in Britton‐Robinson (BR, pH 12.0) medium. A good linear relationship between concentration and current in the range of 0.5 μM–3.5 μM in BR (pH 12.0) medium on GCE with DPV technique [Ip(μA)=0.847 C(μM)+0.114, r=0.995, n=7] has been observed. The proposed method has been successfully applied to tobacco leaves.
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Affiliation(s)
- Tarık Aral
- Department of Chemistry Faculty of Arts and Sciences Batman University Batman Turkey
| | - Günay Önal
- Department of Medical Services and Techniques Health Services Vocational School Batman University Batman Turkey
| | - Ertuğrul Keskin
- Adıyaman University Faculty of Pharmacy Department of Analytical Chemistry Adıyaman Turkey
| | - Abdulkadir Levent
- Department of Chemistry Faculty of Arts and Sciences Batman University Batman Turkey
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Demir E, Göktug Ö, İnam R, Doyduk D. Development and characterization of iron (III) phthalocyanine modified carbon nanotube paste electrodes and application for determination of fluometuron herbicide as an electrochemical sensor. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115389] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Demir E, İnam O, Silah H, Karimi-Maleh H. Studies of mechanism, kinetic model and determination of bupivacaine and its application pharmaceutical forms. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Abstract
Phthalocyanines are aromatic or macrocyclic organic compounds and attract great attention due to their numerous properties. They have many high-tech applications in different areas of the industry such as dyestuffs, thermal printing screens, photovoltaic solar cells, membrane catalytic reactors, semiconductor materials and gas sensors. In the last decade, electrochemical sensor studies have accelerated with the catalytic lighting. It plays a dominant role in the development and implementation of new generation sensors. The aim of this study is to review the electrochemical methods based on electrode modification with phthalocyanines and to shed light on new application areas of phthalocyanines. The focal point was based on the sensor applications of phthalocyanines in the determination of drugs, pesticides, organic materials and metals etc. by electrochemical methods. Experimental conditions and some validation parameters of the sensor applications such as metal phthalocyanine types, indicator electrodes, selectivity, working ranges, detection limits, and analytical applications were discussed. Consequently, this is the first review dealing with the applications of phthalocyanines in electrochemical sensors for the sensitive determination of analytes in a variety of matrices.
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Affiliation(s)
- Ersin Demir
- Department of Analytical Chemistry, Faculty of Pharmacy, Afyonkarahisar Health Sciences University, Afyonkarahisar, Turkey
| | - Hulya Silah
- Department of Chemistry, Faculty of Art & Science, Bilecik Şeyh Edebali University, Bilecik, Turkey
| | - Bengi Uslu
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey
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Square wave stripping voltammetric determination of cyprodinil fungicide in food samples by nanostructured multi walled carbon nanotube paste electrode. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2020. [DOI: 10.1007/s11694-020-00381-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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