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Bátora D, Dienes-Nagy Á, Zeng L, Gerber CE, Fischer JP, Lochner M, Gertsch J. Hypersensitive quantification of major astringency markers in food and wine by substoichiometric quenching of silicon-rhodamine conjugates. Food Chem X 2024; 23:101592. [PMID: 39040149 PMCID: PMC11261284 DOI: 10.1016/j.fochx.2024.101592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/17/2024] [Accepted: 06/22/2024] [Indexed: 07/24/2024] Open
Abstract
Tannins are chemically diverse polyphenols in plant-derived products that not only show diverse biological activities but also play a crucial role in determining the sensory attributes of food and beverages. Therefore, their accurate and cost-effective quantification is essential. Here, we identified a novel fluorescence quenching mechanism of different synthetic rhodamine fluorophores, with a high selectivity towards tannic acid (TA) and catechin-3-gallate (C3G) compared to a structurally diverse panel of tannins and polyphenols. Specific chemical conjugates of silicon-rhodamine with alkyl linkers attached to bulky apolar moieties had a limit of detection near 500 pM and a linear range spanning 5-100 nM for TA. We validated the assay on 18 distinct red wine samples, which showed high linearity (R2 = 0.92) with methylcellulose precipitation with no interference from anthocyanins. In conclusion, a novel assay was developed and validated that allows the sensitive and selective quantification of major astringency markers abundant in food and beverages.
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Affiliation(s)
- Daniel Bátora
- Institute of Biochemistry and Molecular Medicine, University of Bern, 3012 Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, 3012 Bern, Switzerland
| | | | - Liming Zeng
- University of Applied Sciences and Arts of Western Switzerland (HES-SO), Changins Viticulture and Enology College, 1260 Nyon, Switzerland
| | - Christian E. Gerber
- Institute of Biochemistry and Molecular Medicine, University of Bern, 3012 Bern, Switzerland
| | - Jérôme P. Fischer
- Institute of Biochemistry and Molecular Medicine, University of Bern, 3012 Bern, Switzerland
| | - Martin Lochner
- Institute of Biochemistry and Molecular Medicine, University of Bern, 3012 Bern, Switzerland
| | - Jürg Gertsch
- Institute of Biochemistry and Molecular Medicine, University of Bern, 3012 Bern, Switzerland
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2
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Jiang XJ, Ma Y, Zhou Y, Xiao RD, Meng YJ, Ye-Hou, Xie BT, Wu LH, Zhao DH. Green one-step synthesis of N-doped carbon quantum dots for fluorescent detection of lemon yellow in soft drinks. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 316:124305. [PMID: 38657331 DOI: 10.1016/j.saa.2024.124305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/30/2024] [Accepted: 04/15/2024] [Indexed: 04/26/2024]
Abstract
A new fluorescent sensor for the determination of lemon yellow was developed based on nitrogen-doped carbon quantum dots (N-CQDs), which were prepared via a hydrothermal method with dried pomelo peel and L-tyrosine. The N-CQDs exhibited the blue fluorescence with a quantum yield of 28 %. The sensing principle of N-CQDs was quenched by lemon yellow via static quenching. The potential interfering substances showed no influence on the detection of lemon yellow. The limit of detection was 0.023 mg/L and lower than that of national standard. Furthermore, the synthesized N-CQDs have been successfully applied to the measurement of lemon yellow in real samples. Hence, the N-CQDs would be a promising sensor in food analysis.
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Affiliation(s)
- Xiu-Juan Jiang
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China; Jia Sixie College of Agriculture, Weifang University of Science and Technology, Shouguang, PR China.
| | - Yuan Ma
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China.
| | - You Zhou
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China
| | - Rong-Dan Xiao
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China
| | - Yi-Jie Meng
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China
| | - Ye-Hou
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China
| | - Ben-Ting Xie
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China
| | - Lin-Hong Wu
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China
| | - De-Hong Zhao
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, PR China
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3
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Liu B, Yin Y, Li Q, Li W, Xiao F, Liu J, Tan Y, Yang S. Dual-signal detection of tannic acid in red wines based on the peroxidase activity of carbon dots. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:2948-2958. [PMID: 38669009 DOI: 10.1039/d4ay00526k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
Herein, a novel type of phosphorus and iron-doped carbon dot (P,Fe-CD) with outstanding peroxidase activity and excellent fluorescence performance was hydrothermally synthesized to colorimetrically and fluorimetrically detect tannic acid (TA). In the presence of 3,3',5,5'-tetramethylbenzidine (TMB) and H2O2, the P,Fe-CDs could oxidize colorless TMB to a blue oxidation product (oxTMB) resulting in an increased value of absorbance. Simultaneously, the fluorescence intensity of P,Fe-CDs at 430 nm could be quenched owing to the fluorescence resonance energy transfer (FRET) between P,Fe-CDs and the generated oxTMB. Meanwhile, after adding the TA to the system containing TMB, H2O2 and P,Fe-CDs, the value of absorbance could be decreased and the fluorescence could be recovered because of the reduction reaction between TA and oxTMB. Therefore, fluorescence intensity and value of absorbance could be applied to quantitatively detect TA with good linearities between the concentration of TA and the fluorescence intensity/value of absorbance (0.997 and 0.997 for the colorimetric signal and fluorimetric one, respectively) and low limits of detection (0.093 μmol L-1 and 0.053 μmol L-1 for the colorimetry and the fluorimetry, respectively), which was successfully applied to the detection of TA in red wines. Moreover, we applied a smartphone-assisted method to the point-of-care detection of TA with accurate results, providing a new technique for TA detection and food quality monitoring.
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Affiliation(s)
- Bin Liu
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Yu Yin
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Qianwen Li
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Wanwan Li
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Fubing Xiao
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Jinquan Liu
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Yan Tan
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
| | - Shengyuan Yang
- Department of Public Health Laboratory Sciences, School of Public Health, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
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4
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Bordbar MM, Hosseini MS, Sheini A, Safaei E, Halabian R, Daryanavard SM, Samadinia H, Bagheri H. Monitoring saliva compositions for non-invasive detection of diabetes using a colorimetric-based multiple sensor. Sci Rep 2023; 13:16174. [PMID: 37758789 PMCID: PMC10533566 DOI: 10.1038/s41598-023-43262-z] [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: 08/11/2023] [Accepted: 09/21/2023] [Indexed: 09/29/2023] Open
Abstract
The increasing population of diabetic patients, especially in developing countries, has posed a serious risk to the health sector, so that the lack of timely diagnosis and treatment process of diabetes can lead to threatening complications for the human lifestyle. Here, a multiple sensor was fabricated on a paper substrate for rapid detection and controlling the progress of the diabetes disease. The proposed sensor utilized the sensing ability of porphyrazines, pH-sensitive dyes and silver nanoparticles in order to detect the differences in saliva composition of diabetic and non-diabetic patients. A unique color map (sensor response) was obtained for each studied group, which can be monitored by a scanner. Moreover, a good correlation was observed between the colorimetric response resulting from the analysis of salivary composition and the fasting blood glucose (FBG) value measured by standard laboratory instruments. It was also possible to classify participants into two groups, including patients caused by diabetes and those were non-diabetic persons with a total accuracy of 88.9%. Statistical evaluations show that the multiple sensor can be employed as an effective and non-invasive device for continuous monitoring of diabetes, substantially in the elderly.
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Affiliation(s)
- Mohammad Mahdi Bordbar
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mahboobeh Sadat Hosseini
- Health Research Center, Lifestyle Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Azarmidokht Sheini
- Department of Mechanical Engineering, Shohadaye Hoveizeh Campus of Technology, Shahid Chamran University of Ahvaz, Dashte Azadegan, Khuzestan, Iran
| | - Elham Safaei
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz, Iran
| | - Raheleh Halabian
- Applied Microbiology Research Center, Systems Biology and Poising Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | | | - Hosein Samadinia
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Hasan Bagheri
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
- Research Center for Health Management in Mass Gathering, Red Crescent Society of the Islamic Republic of Iran, Tehran, Iran.
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Prieto-Blanco MC, Pardo-Puñal M, Moliner-Martínez Y, Campíns-Falcó P. Determination of antioxidant activity by in situ synthesis of AgNPs using in-tube SPME coupled on-line to capillary liquid chromatography. Mikrochim Acta 2023; 190:299. [PMID: 37462815 PMCID: PMC10353952 DOI: 10.1007/s00604-023-05886-w] [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: 04/19/2023] [Accepted: 06/28/2023] [Indexed: 07/21/2023]
Abstract
A chromatographic system based on in-tube SPME coupled to capillary LC-DAD has been used to study the synthesis of silver nanoparticles using polyphenols in different scenarios: excess of the reducing agent or of the silver salt, addition of the cationic surfactants, and thermal synthesis. The optimized synthesis conditions allowed to quantify the polyphenols used as reducing agents, such as Trolox and chlorogenic acid. Two chromatographic peaks with different absorption spectrum were monitored during the syntheses. Depending on the molar relationship, a linear relation between the area of the chromatographic peaks and the concentration of the silver or polyphenol was established. For stabilization of silver nanoparticles, different cationic surfactants were used allowing to evaluate the role of anion (chloride and bromide) and of the alkyl chain. The proposed methodology can be used to determine chlorogenic acid up to 3 mM with a detection limit of 34 μM at λ= 400 nm. Chlorogenic acid was determined in dietary products with successful results. Precision (RSD=10%) and recovery (97-100%) were also satisfactory.
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Affiliation(s)
- María Carmen Prieto-Blanco
- Grupo QANAP, Departamento de Química, Facultade de Ciencias, Instituto Universitario de Medio Ambiente (IUMA), Universidade da Coruña, Campus da Zapateira, 15071, A Coruña, Spain.
| | - María Pardo-Puñal
- Grupo MINTOTA, Departament de Química Analítica, Facultat de Química, Universitat de Valencia C/ Dr. Moliner 50, E46100, Burjassot, Valencia, Spain
| | - Yolanda Moliner-Martínez
- Grupo MINTOTA, Departament de Química Analítica, Facultat de Química, Universitat de Valencia C/ Dr. Moliner 50, E46100, Burjassot, Valencia, Spain
| | - Pilar Campíns-Falcó
- Grupo MINTOTA, Departament de Química Analítica, Facultat de Química, Universitat de Valencia C/ Dr. Moliner 50, E46100, Burjassot, Valencia, Spain
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Liu Y, Hao P, Wang L, Li G, Fan G, Wu T, Zhu X, Liu Q. N,N-dicarboxymethyl Perylene-diimide-modified CdV2O6 Nanorods for Colorimetric Sensing of H 2O 2 and Pyrogallol. Mikrochim Acta 2023; 190:270. [PMID: 37341810 DOI: 10.1007/s00604-023-05846-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 05/20/2023] [Indexed: 06/22/2023]
Abstract
The peroxidase-like activity of CdV2O6 nanorods has been considerably improved by modification with N, N-dicarboxymethyl perylene-diimide (PDI) as a photosensitizer. The peroxidase-like behaviors are evaluated by virtue of the colorless chromogenic substrate 3,3',5,5'-tetramethylbenzidine (TMB), which is fast changed into blue oxTMB in the presence of H2O2 in only 90 s. PDI-CdV2O6 exhibits high stability at elevated temperatures and PDI-CdV2O6 retains more than 70% of its catalytic activity over a wide range of 15 to 60 °C. The catalytic mechanism of PDI-CdV2O6 is ascribed to the synergistic interaction between PDI and CdV2O6 and the generation of •O2- radicals. Based on the enhanced peroxidase-like activity of PDI-CdV2O6, a selective colorimetric sensor has been constructed for H2O2 and pyrogallol (PG) with detection limits of 36.5 μM and 0.179 μM, respectively. The feasibility of the proposed sensing platform has been validated by detecting H2O2 in milk and pyrogallol in tap water.
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Affiliation(s)
- Yaru Liu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Pingping Hao
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Liming Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Guijiang Li
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
- Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, People's Republic of China
| | - Gaochao Fan
- Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, People's Republic of China
| | - Tao Wu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China.
| | - Xixi Zhu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China.
| | - Qingyun Liu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China.
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7
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Nghia NN, Huy BT, Khanh DNN, Van Cuong N, Li H, Lee YI. Straightforward smartphone assay for quantifying tannic acid in beverages based on colour change of Eu 3+/polyethyleneimine complex. Food Chem 2023; 410:135466. [PMID: 36646032 DOI: 10.1016/j.foodchem.2023.135466] [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: 05/12/2022] [Revised: 01/08/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
Tannic acid (TA)-a natural product-is a polyphenol derivative that occurs in certain kinds of beverages. A large amount of TA could give rise to an unpleasant flavour and could negatively affect the human body by causing stomach irritation, abdominal pain, nausea, vomiting, and even death. Thus, the need exists for a simple TA detection procedure that meets specific criteria such as on-site analysis, portability, and affordability. Herein, we present a new TA assay, which is based on the fluorescent quenching effect of an efficient fluorophore, and which comprises a smartphone-integrated homemade reader system. The fluorescent polyethyleneimine-derivatised polymer (FP), a strong emitter at 510 nm, was synthesised with the aid of a facile sonication method. In the presence of Eu3+ ions, TA quenches the fluorescence of the FP via electrostatic interaction. A smartphone was used to capture an image of the FP undergoing fluorescence for conversion to RGB values. The blue channel was chosen for further analysis because it offered the highest R2-value compared to the red and green channels. We verified these results using a commercial spectrofluorometer and calculated the limit of detection of this assay as 87 nM and 20 nM for the homemade reader and spectrofluorometer, respectively. The detection range for TA with the proposed assay is 0.16-66.66 μM. The application of the proposed method to real beverage samples for TA detection demonstrates its analytical applicability.
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Affiliation(s)
- Nguyen Ngoc Nghia
- Department of Chemistry, Changwon National University, Changwon 51140, Republic of Korea
| | - Bui The Huy
- Department of Chemistry, Changwon National University, Changwon 51140, Republic of Korea; Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Viet Nam
| | - Dang Nguyen Nha Khanh
- National Institute of Applied Mechanics and Informatics, Vietnam Academy of Science and Technology, Ho Chi Minh City, Viet Nam
| | - Nguyen Van Cuong
- Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Viet Nam
| | - Hongchang Li
- Department of Chemistry, Changwon National University, Changwon 51140, Republic of Korea
| | - Yong-Ill Lee
- Department of Chemistry, Changwon National University, Changwon 51140, Republic of Korea; Department of Pharmacy, Pharmaceutical Technical University, Tashkent 100084, Uzbekistan.
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Kurt AH, Olutas EB, Avcioglu F, Karakuş H, Sungur MA, Kara Oztabag C, Yıldırım M. Quercetin- and caffeic acid-functionalized chitosan-capped colloidal silver nanoparticles: one-pot synthesis, characterization, and anticancer and antibacterial activities. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2023; 14:362-376. [PMID: 36998241 PMCID: PMC10043739 DOI: 10.3762/bjnano.14.31] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 03/06/2023] [Indexed: 06/19/2023]
Abstract
The presented study comprises the one-pot synthesis and the characterization of quercetin- and caffeic acid-functionalized chitosan-capped colloidal silver nanoparticles (Ch/Q- and Ch/CA-Ag NPs), and their antibacterial and anticancer activities. The formation of Ch/Q- and Ch/CA-Ag NPs has been confirmed by ultraviolet-visible (UV-vis) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, and transmission electron microscopy (TEM). The characteristic surface plasmon resonance (SPR) absorption band has been found at 417 and 424 nm for Ch/Q- and Ch/CA-Ag NPs, respectively. The formation of a chitosan shell comprising quercetin and caffeic acid, which surround the colloidal core Ag NPs, was confirmed by UV-vis, and FTIR analyses, and monitored by TEM microscopy. The size of nanoparticles has been determined as 11.2 and 10.3 nm for Ch/Q- and Ch/CA-Ag, respectively. The anticancer activity of Ch/Q- and Ch/CA-Ag NPs has been evaluated against U-118 MG (human glioblastoma) and ARPE-19 (human retinal pigment epithelium) cells. Both NPs showed anticancer activity, but Ch/Q-Ag NPs seemed to be more effective on cancer cell lines (U-118 MG) in comparison to healthy ones (ARPE-19). Furthermore, the antibacterial activity of Ch/Q- and Ch/CA-Ag NPs against Gram-negative (P. aeruginosa and E. coli) and Gram-positive (S. aureus and S. epidermidis) bacteria was determined, and dose-dependent antibacterial effects were found.
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Affiliation(s)
- Akif Hakan Kurt
- Department of Medicinal Pharmacology, Faculty of Medicine, Bolu Abant Izzet Baysal University, 14030 Bolu, Türkiye
| | - Elif Berna Olutas
- Department of Chemistry, Faculty of Arts and Sciences, Bolu Abant Izzet Baysal University, 14030 Bolu, Türkiye
| | - Fatma Avcioglu
- Department of Medical Microbiology, Faculty of Medicine, Bolu Abant Izzet Baysal University, 14030 Bolu, Türkiye
| | - Hamza Karakuş
- Technology Transfer Application and Research Center, Bolu Abant Izzet Baysal University, 14030 Bolu, Türkiye
| | - Mehmet Ali Sungur
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Duzce University, 81620 Duzce, Türkiye
| | - Cansu Kara Oztabag
- Department of Interdisciplinary Neuroscience, Graduate Education Institute, Bolu Abant Izzet Baysal University, 14030 Bolu, Türkiye
| | - Muhammet Yıldırım
- Department of Chemistry, Faculty of Arts and Sciences, Bolu Abant Izzet Baysal University, 14030 Bolu, Türkiye
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9
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Khan Z, Al-Thabaiti SA. Fabrication of chitosan-MnO 2‑iridium/nanoceria supported nanoparticles: Catalytic and anti-radical activities. Int J Biol Macromol 2023; 228:411-425. [PMID: 36566810 DOI: 10.1016/j.ijbiomac.2022.12.220] [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: 09/14/2022] [Revised: 12/02/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
Chitosan capped MnO2‑iridium nanoparticles supported on nanoceria (Ch-MnO2-Ir/CeO2) were fabricated by using combination of colloidal solution and metal displacement galvanic methods. The oxidative degradation of acid orange 7 in aqueous solution by activated persulfate with the as-prepared nanoparticles was studied. The resulting Ch-MnO2-Ir/CeO2 with S2O82-, 80 % degraded 70.06 mg/L of acid orange 7 within 100 min, while at the same time, Ch-Ir, Ch-MnO2, and Ch-Ir-MnO2 remained inactive. CeO2 increased the surface of the catalyst, and also improved the reactive oxygen species site of Ch-Ir-MnO2 through the activation of S2O82- with CeO2. The reversible redox cycle reaction, Ce (III) ↔ Ce (IV) and strong synergistic effect of MnO2-Ir are responsible for the remarkable catalytic performance of Ch-MnO2-Ir/CeO2/S2O82- system. The degradation of acid orange 7 could be significantly retarded with inorganic (NO3- < Cl- < SO42- < H2PO4- < HCO3-) and organic scavengers (ethanol < tertiary butanol < benzoquinone < phenol). Ch-MnO2-Ir/CeO2 exhibited excellent stability and reusability. Anti-radical activity of chitosan and Ch-MnO2-Ir/CeO2 was evaluated with 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical. The free radical properties increase with concentration of chitosan and Ch-MnO2-Ir/CeO2.
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Affiliation(s)
- Zaheer Khan
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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10
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Silver Nanoparticle Synthesis via Photochemical Reduction with Sodium Citrate. Int J Mol Sci 2022; 24:ijms24010255. [PMID: 36613702 PMCID: PMC9820713 DOI: 10.3390/ijms24010255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
The aim of this paper is to provide a simple and efficient photoassisted approach to synthesize silver nanoparticles, and to elucidate the role of the key factors (synthesis parameters, such as the concentration of TSC, irradiation time, and UV intensity) that play a major role in the photochemical synthesis of silver nanoparticles using TSC, both as a reducing and stabilizing agent. Concomitantly, we aim to provide an easy way to evaluate the particle size based on Mie theory. One of the key advantages of this method is that the synthesis can be "activated" whenever or wherever silver nanoparticles are needed, by premixing the reactants and irradiating the final solution with UV radiation. UV irradiance was determined by using Keitz's theory. This argument has been verified by premixing the reagents and deposited them in an enclosed space (away from sunlight) at 25 °C, then checking them for three days. Nothing happened, unless the sample was directly irradiated by UV light. Further, obtained materials were monitored for 390 days and characterized using scanning electron microscopy, UV-VIS, and transmission electron microscopy.
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11
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Faisal M, Alam MM, Ahmed J, Asiri AM, Alsaiari M, Alruwais RS, Madkhali O, Rahman MM, Harraz FA. Efficient Detection of 2,6-Dinitrophenol with Silver Nanoparticle-Decorated Chitosan/SrSnO 3 Nanocomposites by Differential Pulse Voltammetry. BIOSENSORS 2022; 12:bios12110976. [PMID: 36354485 PMCID: PMC9688669 DOI: 10.3390/bios12110976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 05/03/2023]
Abstract
Herein, an ultra-sonication technique followed by a photoreduction technique was implemented to prepare silver nanoparticle-decorated Chitosan/SrSnO3 nanocomposites (Ag-decorated Chitosan/SrSnO3 NCs), and they were successively used as electron-sensing substrates coated on a glassy carbon electrode (GCE) for the development of a 2,6-dinitrophenol (2,6-DNP) efficient electrochemical sensor. The synthesized NCs were characterized in terms of morphology, surface composition, and optical properties using FESEM, TEM, HRTEM, BET, XRD, XPS, FTIR, and UV-vis analysis. Ag-decorated Chitosan/SrSnO3 NC/GCE fabricated with the conducting binder (PEDOT:PSS) was found to analyze 2,6-DNP in a wide detection range (LDR) of 1.5~13.5 µM by applying the differential pulse voltammetry (DPV) approach. The 2,6-DNP sensor parameters, such as sensitivity (54.032 µA µM-1 cm-2), limit of detection (LOD; 0.18 ± 0.01 µM), limit of quantification (LOQ; 0.545 µM) reproducibility, and response time, were found excellent and good results. Additionally, various environmental samples were analyzed and obtained reliable analytical results. Thus, it is the simplest way to develop a sensor probe with newly developed nanocomposite materials for analyzing the carcinogenic contaminants from the environmental effluents by electrochemical approach for the safety of environmental and healthcare fields in a broad scale.
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Affiliation(s)
- M. Faisal
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia
- Department of Chemistry, Faculty of Science and Arts, Najran University, Najran 11001, Saudi Arabia
| | - M. M. Alam
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdelaziz University, Jeddah 21589, Saudi Arabia
| | - Jahir Ahmed
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia
| | - Abdullah M. Asiri
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdelaziz University, Jeddah 21589, Saudi Arabia
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mabkhoot Alsaiari
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia
- Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Najran 11001, Saudi Arabia
| | - Raja Saad Alruwais
- Chemistry Department, Faculty of Science and Humanities, Shaqra University, Dawadmi 17472, Saudi Arabia
| | - O. Madkhali
- Department of Physics, College of Science, Jazan University, Jazan 45142, Saudi Arabia
| | - Mohammed M. Rahman
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdelaziz University, Jeddah 21589, Saudi Arabia
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Correspondence: (M.M.R.); (F.A.H.)
| | - Farid A. Harraz
- Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, Najran 11001, Saudi Arabia
- Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Najran 11001, Saudi Arabia
- Correspondence: (M.M.R.); (F.A.H.)
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12
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Mabrouk M, Hammad SF, Mansour FR, Abdella AA. A Critical Review of Analytical Applications of Chitosan as a Sustainable Chemical with Functions Galore. Crit Rev Anal Chem 2022; 54:840-856. [PMID: 35903052 DOI: 10.1080/10408347.2022.2099220] [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] [Indexed: 10/16/2022]
Abstract
Biomass and biowastes stand as sustainable and cost-effective environmentally benign alternative feedstock. Chitosan is a biocompatible, bioactive, and biodegradable biopolymer derived from chitin to achieve eight aspects out of the 12 green chemistry principles. Chitosan got significant attention in several fields including chemical analysis, in addition to chemical functionally, which enabled its use as adsorbent and its structural crosslinking using various crosslinkers. The physicochemical, technological, and optical properties of chitosan have been extensively exploited in analysis. Mainly, deacetylation degree and molecular weight are controlling its properties and hence controlling its functions. This review presents a structure, properties, and functions relationships of chitosan. It also aims to provide an overview of the different functions that chitosan can serve in each analytical technique such as supporting matrix, catalyst…etc. The contribution of chitosan in improving the ecological performance is discussed in each technique.
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Affiliation(s)
- Mokhtar Mabrouk
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
- Pharmaceutical Services Center, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Sherin F Hammad
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Fotouh R Mansour
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
- Pharmaceutical Services Center, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Aya A Abdella
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
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13
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Hejazi SA, Zaheer Z, Kosa SA. Chitosan and cetyltrimethylammonium bromide capped Iridium-silver bimetallic nanoparticles: A comparative study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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14
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Santiago-Castillo K, Torres-Huerta AM, del Ángel-López D, Domínguez-Crespo MA, Dorantes-Rosales H, Palma-Ramírez D, Willcock H. In Situ Growth of Silver Nanoparticles on Chitosan Matrix for the Synthesis of Hybrid Electrospun Fibers: Analysis of Microstructural and Mechanical Properties. Polymers (Basel) 2022; 14:674. [PMID: 35215587 PMCID: PMC8880230 DOI: 10.3390/polym14040674] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/04/2022] [Accepted: 02/05/2022] [Indexed: 02/07/2023] Open
Abstract
A viable alternative for the next generation of wound dressings is the preparation of electrospun fibers from biodegradable polymers in combination with inorganic nanoparticles. A poly(vinyl alcohol)-chitosan-silver nanoparticles (PVA-CTS-Ag NPs) system has been developed for antimicrobial and wound healing applications. Here, the preparation of PVA-CTS-Ag electrospun fibers using a two-step process is reported in order to analyze changes in the microstructural, mechanical, and antibacterial properties and confirm their potential application in the biomedical field. The Ag nanoparticles were well-dispersed into the chitosan matrix and their cubic structure after the electrospinning process was also retained. The Ag NPs displayed an average diameter of ~33 nm into the CTS matrix, while the size increased up to 213 nm in the PVA-CTS-Ag(NPs) fibers. It was observed that strong chemical interactions exist between organic (CTS) and inorganic phases through nitrogenous groups and the oxygen of the glycosidic bonds. A defect-free morphology was obtained in the PVA-CTS-Ag NPs final fibers with an important enhancement of the mechanical properties as well as of the antibacterial activity compared with pure PVA-CTS electrospun fibers. The results of antibacterial activity against E. coli and S. aureus confirmed that PVA-CTS-Ag(NPs) fibers can be potentially used as a material for biomedical applications.
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Affiliation(s)
- Karina Santiago-Castillo
- CIAMS, CICATA-Altamira, Instituto Politécnico Nacional, Km. 14.5 Carretera Tampico-Puerto Industrial Altamira, Altamira 89600, Mexico;
| | - Aidé Minerva Torres-Huerta
- Departamento de Materiales Nanoestructurados, Unidad Profesional Interdisciplinaria de Ingeniería campus Hidalgo (UPIIH), Instituto Politécnico Nacional, Km. 1 + 500, Carretera Pachuca-Actopan, San Agustín Tlaxiaca 42162, Mexico
| | - Deyanira del Ángel-López
- Escuela de Ingeniería y Ciencias, Instituto Tecnológico y de Estudios Superiores de Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey 64849, Mexico;
- Área de ciencias químicas, exactas y tecnológicas, Universidad del Noreste, Prolongación Av. Hidalgo 6315 Col Nuevo Aeropuerto, Tampico 89337, Mexico
| | - Miguel Antonio Domínguez-Crespo
- Departamento de Materiales Nanoestructurados, Unidad Profesional Interdisciplinaria de Ingeniería campus Hidalgo (UPIIH), Instituto Politécnico Nacional, Km. 1 + 500, Carretera Pachuca-Actopan, San Agustín Tlaxiaca 42162, Mexico
| | - Héctor Dorantes-Rosales
- Departamento de Metalurgia, ESIQIE, Instituto Politécnico Nacional, Ciudad de México 07300, Mexico;
| | - Diana Palma-Ramírez
- Centro Mexicano para la Producción más Limpia (CMPL), Instituto Politécnico Nacional, Av. Acueducto s/n, La Laguna Ticomán, México City 07340, Mexico;
| | - Helen Willcock
- Department of Materials, Loughborough University, Loughborough LE11 3TU, UK;
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15
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Pandiyaraj V, Murmu A, Pandy SK, Sevanan M, Arjunan S. Metal nanoparticles and its application on phenolic and heavy metal pollutants. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2021-0058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Abstract
The perpetual exposure of several manmade materials and their activities such as urbanization, industrialization, transportation, mining, construction, petroleum refining, manufacturing, preservatives, disinfectants etc., release various pollutants like organic, inorganic, and heavy metals which pollute the air, water, and soil. This poses various environmental issues which are relevant to the ecosystem and human wellbeing that intensify the implementation of new expedient treatment technologies. Likewise, phenolic and heavy metal pollutants find their way into the environment. These phenolic and heavy metals are toxic to the liver, heart and carcinogenic. Therefore, the removal of these kinds of pollutants from the environment is a highly challenging issue. As conventional treatment technologies have consequent drawbacks, new interests have been developed to remediate and remove pollutants from the ecosystem using metal nanoparticles (MPNs). To date, many researchers all over the world have been investigating novel approaches to enhance various remediation application technologies. One such approach that the researchers are constantly showing interest in is the use of nanomaterials with potential applications towards the environment. In this regard, MPNs like Copper (Cu), Nickel (Ni), Palladium (Pd), Gold (Au), Silver (Ag), Platinum (Pt), Titanium (Ti), and other nano metals are serving as a suitable agent to eliminate emerging contaminants in various fields, particularly in the removal of phenolic and heavy metal pollutants. This chapter discusses the mechanism and application of various MPNs in eliminating various phenolic and heavy metal pollutants from the environment.
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Affiliation(s)
- Vaanmathy Pandiyaraj
- Department of Biotechnology , Karunya Institute of Technology and Sciences , Coimbatore , India
| | - Ankita Murmu
- Department of Biotechnology , Karunya Institute of Technology and Sciences , Coimbatore , India
| | - Saravana Kumari Pandy
- Department of Microbiology , Rathnavel Subramaniam College of Arts and Science , Coimbatore , India
| | - Murugan Sevanan
- Department of Biotechnology , Karunya Institute of Technology and Sciences , Coimbatore , India
| | - Shanamitha Arjunan
- Department of Biotechnology , Karunya Institute of Technology and Sciences , Coimbatore , India
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16
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Sistani S, Shekarchizadeh H. Fabrication of fluorescence sensor based on molecularly imprinted polymer on amine-modified carbon quantum dots for fast and highly sensitive and selective detection of tannic acid in food samples. Anal Chim Acta 2021; 1186:339122. [PMID: 34756273 DOI: 10.1016/j.aca.2021.339122] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/28/2021] [Accepted: 09/25/2021] [Indexed: 12/28/2022]
Abstract
Developing a rapid and accurate method for tannic acid (TA) detection and measurement is necessary due to its extensive applications in the food industry. In this work, a fluorescence sensor with a low limit of detection was synthesized for TA for the first time. First, amine-modified carbon quantum dots (a-CQDs) with high-quantum yield were synthesized by the hydrothermal method. A layer of molecularly imprinted polymer (MIP) was then placed on a-CQDs by the surface printing method to increase the sensor selectivity. The mechanism of TA detection by the prepared a-CQDs/MIPs was quenching the fluorescence intensity of a-CQDs in the presence of TA due to the transfer of electrons from the TA to the a-CQDs. The linear range of the sensor response was at the TA concentration of 1-200 nmol L-1 and its detection limit was 0.6 nmol L-1 under optimal conditions. Finally, the sensor was used to measure TA in grape juice, green tea, and black tea samples using the recovery method. Recovery values between 97.4 and 103.6% and RSDs less than 3.8% indicated the high potential of the prepared sensor for TA analysis in complex food samples.
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Affiliation(s)
- Shabnam Sistani
- Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Hajar Shekarchizadeh
- Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
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17
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Enhanced anticancer activities of curcumin-loaded green gum acacia-based silver nanoparticles against melanoma and breast cancer cells. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-02176-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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18
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Chitosan-capped silver nanoparticles: fabrication, oxidative dissolution, sensing properties, and antimicrobial activity. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02673-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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19
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Silver nanopentagons-based colorimetric sensor for high-selective chromium(III) detection in aqueous solution with polyvinylpyrrolidone and citrate. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01729-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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20
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Desalination membranes with ultralow biofouling via synergistic chemical and topological strategies. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119212] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Karthik CS, Chethana MH, Manukumar HM, Ananda AP, Sandeep S, Nagashree S, Mallesha L, Mallu P, Jayanth HS, Dayananda BP. Synthesis and characterization of chitosan silver nanoparticle decorated with benzodioxane coupled piperazine as an effective anti-biofilm agent against MRSA: A validation of molecular docking and dynamics. Int J Biol Macromol 2021; 181:540-551. [PMID: 33766592 DOI: 10.1016/j.ijbiomac.2021.03.119] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/19/2021] [Accepted: 03/21/2021] [Indexed: 12/11/2022]
Abstract
Biomaterial research has improved the delivery and efficacy of drugs over a wide range of pharmaceutical applications. The objective of this study was to synthesize benzodioxane coupled piperazine decorated chitosan silver nanoparticle (Bcp*C@AgNPs) against methicillin-resistant Staphylococcus aureus (MRSA) and to assess the nanoparticle as an effective candidate for antibacterial and anti-biofilm care. Antibacterial activity of the compound was examined and minimum inhibitory concentration (MIC) was observed at (10.21 ± 0.03 ZOI) a concentration of 200 μg/mL. The Bcp*C@AgNPs interferes with surface adherence of MRSA, suggesting an anti-biofilm distinctive property that is verified for the first time by confocal laser microscopic studies. By ADMET studies the absorption, distribution, metabolism, excretion and toxicity of the compound was examined. The interaction solidity and the stability of the compound when surrounded by water molecules were analyzed by docking and dynamic simulation analysis. The myoblast cell line (L6) was considered for toxicity study and was observed that the compound exhibited less toxic effect. This current research highlights the biocidal efficiency of Bcp*C@AgNPs with their bactericidal and anti-biofilm properties over potential interesting clinical trial targets in future.
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Affiliation(s)
- C S Karthik
- Department of Chemistry, SJCE, JSS Science and Technology University, Mysuru 570 006, Karnataka, India
| | - M H Chethana
- Department of Chemistry, SJCE, JSS Science and Technology University, Mysuru 570 006, Karnataka, India
| | - H M Manukumar
- Department of Chemistry, SJCE, JSS Science and Technology University, Mysuru 570 006, Karnataka, India
| | - A P Ananda
- Ganesh Consultancy and Analytical Services, Hebbal Industrial Area, Mysuru 570016, Karnataka, India
| | - S Sandeep
- Department of Chemistry, SJCE, JSS Science and Technology University, Mysuru 570 006, Karnataka, India
| | - S Nagashree
- Department of Chemistry, SJCE, JSS Science and Technology University, Mysuru 570 006, Karnataka, India
| | - L Mallesha
- PG Department of Chemistry, JSS College of Arts, Commerce and Science, Mysuru 570 025, Karnataka, India
| | - P Mallu
- Department of Chemistry, SJCE, JSS Science and Technology University, Mysuru 570 006, Karnataka, India.
| | - H S Jayanth
- Department of Microbiology, Yuvaraja's College, University of Mysore, Mysuru 570005, Karnataka, India
| | - B P Dayananda
- PG Department of Chemistry, Maharani's College, University of Mysore, Mysuru 570005, Karnataka, India
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22
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Yalçın O, Tekgündüz C, Öztürk M, Tekgündüz E. Investigation of the traditional organic vinegars by UV-VIS spectroscopy and rheology techniques. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:118987. [PMID: 33032119 DOI: 10.1016/j.saa.2020.118987] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 09/13/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
Optical, rheological and metabolic properties of the apple, hawthorn, artichoke, grape, rosehip and blackberry organic vinegar produced by deep culture method (handmade traditional method) were analysed using UV-Vis spectroscopy and rheology techniques. Flow behaviours for all samples were analysed in the shear rate range of 10-3 to 103 1/s and in frequency range of 10-3 to 103rad/s, respectively. Absorption spectra for six organic vinegars was observed two peaks around 215 and 285nm due to the presence of phenolic compounds and organic acids such as acetic. The effects of optical transitions of organic molecules on the absorption coefficient values for vinegars were determined. Optical energy band gaps of all samples were found to be consistent with Planck's radiation approach known as Rayleigh-Jeans law and Tauc law. The rheological/flow properties of the all vinegars were found to be relevant with non-Newtonian flow behaviour and Ostwald-de Waele model. From the results of optical and rheological analysis, which determines the quantity and quality characteristics of all organic vinegars, it was concluded that these vinegars are in a level that people can drink easily.
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Affiliation(s)
- O Yalçın
- Department of Physics, Niğde Ömer Halisdemir University, 51240 Niğde, Turkey.
| | - C Tekgündüz
- İçmeli Natural Products/Nahita Company, 51240 Niğde, Turkey
| | - M Öztürk
- Program of Opticianry, Niğde Ömer Halisdemir University, 51240 Niğde, Turkey
| | - E Tekgündüz
- İçmeli Natural Products/Nahita Company, 51240 Niğde, Turkey
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23
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Ling Y, Cao T, Liu L, Xu J, Zheng J, Li J, Zhang M. Fabrication of noble metal nanoparticles decorated on one dimensional hierarchical polypyrrole@MoS2 microtubes. J Mater Chem B 2020; 8:7801-7811. [DOI: 10.1039/d0tb01387k] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Herein, we present a facile strategy to fabricate noble metal (Ag, Au, Pd) decorated on PPy@MoS2 microtubes. As a proof of application, the ternary PPy@MoS2@Au hybrids reveal excellent enzyme-like catalytic performance.
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Affiliation(s)
- Yang Ling
- College of Chemistry and Chemical Enginerring
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
- Institute for Sustainable Energy/College of Sciences
| | - Tiantian Cao
- College of Chemistry and Chemical Enginerring
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Libin Liu
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan 250353
- China
| | - Jingli Xu
- College of Chemistry and Chemical Enginerring
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Jing Zheng
- College of Chemistry and Chemical Enginerring
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
| | - Jiaxing Li
- Institute of Plasma Physics
- Chinese Academy of Sciences
- 230031 Hefei
- P. R. China
| | - Min Zhang
- College of Chemistry and Chemical Enginerring
- Shanghai University of Engineering Science
- Shanghai 201620
- P. R. China
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24
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El-Maghrabey M, El-Shaheny R, Belal F, Kishikawa N, Kuroda N. Green Sensors for Environmental Contaminants. NANOTECHNOLOGY IN THE LIFE SCIENCES 2020. [DOI: 10.1007/978-3-030-45116-5_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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25
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Shin M, Song KH, Burrell JC, Cullen DK, Burdick JA. Injectable and Conductive Granular Hydrogels for 3D Printing and Electroactive Tissue Support. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1901229. [PMID: 31637164 PMCID: PMC6794627 DOI: 10.1002/advs.201901229] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/27/2019] [Indexed: 05/17/2023]
Abstract
Conductive hydrogels are attractive to mimic electrophysiological environments of biological tissues and toward therapeutic applications. Injectable and conductive hydrogels are of particular interest for applications in 3D printing or for direct injection into tissues; however, current approaches to add conductivity to hydrogels are insufficient, leading to poor gelation, brittle properties, or insufficient conductivity. Here, an approach is developed using the jamming of microgels to form injectable granular hydrogels, where i) hydrogel microparticles (i.e., microgels) are formed with water-in-oil emulsions on microfluidics, ii) microgels are modified via an in situ metal reduction process, and iii) the microgels are jammed into a solid, permitting easy extrusion from a syringe. Due to the presence of metal nanoparticles at the jammed interface with high surface area in this unique design, the granular hydrogels have greater conductivity than non-particle (i.e., bulk) hydrogels treated similarly or granular hydrogels either without metal nanoparticles or containing encapsulated nanoparticles. The conductivity of the granular hydrogels is easily modified through mixing conductive and non-conductive microgels during fabrication and they can be applied to the 3D printing of lattices and to bridge muscle defects. The versatility of this conductive granular hydrogel will permit numerous applications where conductive materials are needed.
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Affiliation(s)
- Mikyung Shin
- Department of BioengineeringUniversity of PennsylvaniaPhiladelphiaPA19104USA
| | - Kwang Hoon Song
- Department of BioengineeringUniversity of PennsylvaniaPhiladelphiaPA19104USA
| | - Justin C. Burrell
- Department of BioengineeringUniversity of PennsylvaniaPhiladelphiaPA19104USA
- Department of NeurosurgeryPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA19104USA
- Center for NeurotraumaNeurodegeneration and RestorationCorporal Michael J. Crescenz Veterans Affairs Medical CenterPhiladelphiaPA19104USA
| | - D. Kacy Cullen
- Department of BioengineeringUniversity of PennsylvaniaPhiladelphiaPA19104USA
- Department of NeurosurgeryPerelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA19104USA
- Center for NeurotraumaNeurodegeneration and RestorationCorporal Michael J. Crescenz Veterans Affairs Medical CenterPhiladelphiaPA19104USA
| | - Jason A. Burdick
- Department of BioengineeringUniversity of PennsylvaniaPhiladelphiaPA19104USA
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26
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Gasbarri C, Ruggieri F, Foschi M, Aceto A, Scotti L, Angelini G. Simple Determination of Silver Nanoparticles Concentration as Ag
+
by Using ISE as Potential Alternative to ICP Optical Emission Spectrometry. ChemistrySelect 2019. [DOI: 10.1002/slct.201902336] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Carla Gasbarri
- Department of PharmacyUniversity “G. d'Annunzio” of Chieti-Pescara Via dei Vestini 66100 Chieti Italy
| | - Fabrizio Ruggieri
- Department of Chemical and Physical SciencesUniversity of L'Aquila Via Vetoio 67010 Coppito, L'Aquila Italy
| | - Martina Foschi
- Department of Chemical and Physical SciencesUniversity of L'Aquila Via Vetoio 67010 Coppito, L'Aquila Italy
| | - Antonio Aceto
- Department of MedicalOral and Biotechnological SciencesUniversity “G. d'Annunzio” of Chieti-Pescara Via dei Vestini 66100 Chieti Italy
| | - Luca Scotti
- Department of MedicalOral and Biotechnological SciencesUniversity “G. d'Annunzio” of Chieti-Pescara Via dei Vestini 66100 Chieti Italy
| | - Guido Angelini
- Department of PharmacyUniversity “G. d'Annunzio” of Chieti-Pescara Via dei Vestini 66100 Chieti Italy
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27
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Synthesis of silver nanoparticles assisted by chitosan and its application to catalyze the reduction of 4-nitroaniline. Int J Biol Macromol 2019; 135:752-759. [DOI: 10.1016/j.ijbiomac.2019.05.209] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 05/25/2019] [Accepted: 05/28/2019] [Indexed: 12/15/2022]
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28
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Environmentally Benign Carbon Nanodots Prepared from Lemon for the Sensitive and Selective Fluorescence Detection of Fe(III) and Tannic Acid. J Fluoresc 2019; 29:631-643. [PMID: 30993505 DOI: 10.1007/s10895-019-02360-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 02/20/2019] [Indexed: 10/27/2022]
Abstract
Photoluminescent carbon nanodots (CNDs) were prepared using a biocarbon source of lemon extract. The obtained CNDs are of spherical shape and are enriched with the carboxylic acid fucntionalities. CNDs exhibited a fluorescence emission at 445 nm and unveiled blue luminescence in ultraviolet excitation. The influences of pH and ionic strength toward the stability of CNDs were investigated in detail and the obtained stability authenticates their applicability in different environmental conditions. The competitive binding of Fe3+ with CNDs quenches the fluorescence behavior of CNDs and was further quenched with the selective complex formation of Fe3+ with tannic acid (TA). The interference experiments specified that CNDs-Fe3+ assembly selectively detected TA and the co-existing molecules have not influenced the quenching effect of TA with CNDs-Fe3+. The analytical reliability of constructed sensor was validated from the recovery obtained in the range of 91.66-107.02% in real samples. Thus the low cost and environmentally benign CNDs prepared from natural biomass provide new avenues in the fluorescence detection of biologically significant metal ions and biomolecules, facilitating their competency in on-site applications of real environmental samples.
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29
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Yang P, Zhu Z, Chen M, Zhou X, Chen W. Microwave-assisted synthesis of polyamine-functionalized carbon dots from xylan and their use for the detection of tannic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 213:301-308. [PMID: 30708287 DOI: 10.1016/j.saa.2019.01.043] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 12/28/2018] [Accepted: 01/15/2019] [Indexed: 05/25/2023]
Abstract
A facile and straightforward microwave-assisted method was used to prepare polyamine-functionalized carbon dots (CDs) from a precursor comprising renewable xylan and branched polyethyleneimine (BPEI). The as-prepared BPEI-CDs were monodispersed sphere particles with an average diameter of about 8.62 nm, and exhibited excellent fluorescent property and high stability, as well as excitation-independent emission behavior. Furthermore, it is attractive that the BPEI-CDs can be used as novel fluorescent probes for detecting tannic acid (TA) sensitively and selectively. At the optimum condition, the TA detection system was established in water solution and ethanol solution with a dynamic range from 0.1 to 5 μM, and their detection limit of 36.8 nM and 44.9 nM were also determined, respectively. Most importantly, the BPEI-CDs-based sensors can be successfully applied to detect TA in real lake water and white wine samples, suggesting the low-cost and excellent BPEI-CDs are potential suitable for TA detection in practical application.
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Affiliation(s)
- Pei Yang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Ziqi Zhu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Minzhi Chen
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xiaoyan Zhou
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Weimin Chen
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
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Rapid and selective fluorometric determination of tannic acid using MoO3-x quantum dots. Mikrochim Acta 2019; 186:247. [DOI: 10.1007/s00604-019-3311-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 02/11/2019] [Indexed: 01/25/2023]
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Yang H, He L, Pan S, Liu H, Hu X. Nitrogen-doped fluorescent carbon dots for highly sensitive and selective detection of tannic acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 210:111-119. [PMID: 30453186 DOI: 10.1016/j.saa.2018.11.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/08/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
Herein, a facile approach for highly sensitive and selective detection of tannic acid (TA) was proposed with the nitrogen-doped fluorescent carbon dots (NCDs) as a novel fluorescent probe, using sodium citrate and aminopyrazine as precursors. The as-synthesized NCDs exhibited multiple advantages including high quantum yield (11.8%), good water solubility and satisfactory stability. In addition, the NCDs displayed excitation-independent emission behavior with fluorescence emission peak remaining at 389 nm under excitation of 270-350 nm. Significantly, the fluorescence quenching of as-fabricated NCDs was observed with the increasing TA concentration, and the calibration curve displayed a wide linear region ranging from 0.40 to 9.0 μmol L-1 with a detection limit of 0.12 μmol L-1. This fluorescent probe also performed well in determining TA in beer samples with average recoveries of TA ranging from 96.1% to 104.4% and the relative standard deviation less than 5%, which provided a reliable, rapid and simple method to determine TA in real samples. Thus, this method offered a valuable insight for its practical applications.
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Affiliation(s)
- Huan Yang
- Key Laboratory of Luminescent and Real-Time analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Li He
- Key Laboratory of Luminescent and Real-Time analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Shuang Pan
- Key Laboratory of Luminescent and Real-Time analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Hui Liu
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Xiaoli Hu
- Key Laboratory of Luminescent and Real-Time analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
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Shavandi A, Saeedi P, Ali MA, Jalalvandi E. Green synthesis of polysaccharide-based inorganic nanoparticles and biomedical aspects. FUNCTIONAL POLYSACCHARIDES FOR BIOMEDICAL APPLICATIONS 2019. [PMCID: PMC7151831 DOI: 10.1016/b978-0-08-102555-0.00008-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Biologically mediated inorganic nanoparticles (NPs) are considered as a green, cheap, and environmental-friendly materials, which connect the nanotechnology and biomedical sciences. Metallic NPs such as gold and silver NPs, synthesized using natural materials are an important branch of inorganic NPs with catalytic functionalities and a diverse range of biomedical applications such as antimicrobial application. Polysaccharides are excellent candidates to stabilize and control the size of NPs during the synthesis process. These polymers possess multiple binding sites, which facilitate attachment to the metal surface. As a result, polysaccharides can effectively create an organic-inorganic network of the metal NPs and confer a significant protection against aggregation and chemical modifications. This chapter discusses the methods of the preparation of polysaccharide-mediated NPs and reviews various types and diverse applications for these novel materials.
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Fan M, Gong L, Sun J, Wang D, Bi F, Gong Z. Killing Two Birds with One Stone: Coating Ag NPs Embedded Filter Paper with Chitosan for Better and Durable Point-of-Use Water Disinfection. ACS APPLIED MATERIALS & INTERFACES 2018; 10:38239-38245. [PMID: 30360092 DOI: 10.1021/acsami.8b13985] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, porous chitosan (CS) coated Ag NPs embedded filter paper (CAEFP) was fabricated for point-of-use water disinfection application. Thanks for the presence of CS coating, the tensile strength of the CAEFP in wet condition was found to be 1.8 MPa, 700% increase compared with where there was no CS coating, making it much more durable. In addition, the coating with CS could greatly boost the Ag NPs loading without worrying about the excessive release of Ag into the treated water, thereby significantly improving the bactericidal efficiency but still be safe to drink in terms of Ag release. Furthermore, by controlling the amount of CS used, the flow rate and bactericidal efficiency of the CAEFP could be manipulated (customized). When the CS content increased from 0.5 to 2.0 wt %, the flow rate of CAEFP would drop from 9.3 to 0.53 L/min/m2, and the bactericidal efficiency against Escherichia coli and Bacillus subtilis could improve from 4 and 3.6 to 4.9 and 4.8 log reduction, respectively. At optimum condition, the total Ag in treated water by CAEFP was below 45 μg/L, only 1/10 of that from Ag NPs loaded filter paper without CS coating, half of the WHO drinking water requirement (<100 μg/L). Natural surface water samples were used for the demonstration of the bactericidal performance of the CAEFP. Both the total bacterial and E. coli counts met the WHO standard.
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Affiliation(s)
- Meikun Fan
- Faculty of Geosciences and Environmental Engineering , Southwest Jiaotong University , Chengdu 610031 , China
- State-province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety , Chengdu 610031 , China
| | - Lin Gong
- Faculty of Geosciences and Environmental Engineering , Southwest Jiaotong University , Chengdu 610031 , China
| | - Ji Sun
- Faculty of Geosciences and Environmental Engineering , Southwest Jiaotong University , Chengdu 610031 , China
| | - Dongmei Wang
- Faculty of Geosciences and Environmental Engineering , Southwest Jiaotong University , Chengdu 610031 , China
| | - Feng Bi
- Faculty of Geosciences and Environmental Engineering , Southwest Jiaotong University , Chengdu 610031 , China
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental Engineering , Southwest Jiaotong University , Chengdu 610031 , China
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Photoelectrochemical sensing of tannic acid based on the use of TiO2 sensitized with 5-methylphenazinium methosulfate and carboxy-functionalized CdTe quantum dots. Mikrochim Acta 2018; 185:521. [DOI: 10.1007/s00604-018-3047-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/06/2018] [Indexed: 01/16/2023]
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Ghasemi A, Rabiee N, Ahmadi S, Hashemzadeh S, Lolasi F, Bozorgomid M, Kalbasi A, Nasseri B, Shiralizadeh Dezfuli A, Aref AR, Karimi M, Hamblin MR. Optical assays based on colloidal inorganic nanoparticles. Analyst 2018; 143:3249-3283. [PMID: 29924108 PMCID: PMC6042520 DOI: 10.1039/c8an00731d] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Colloidal inorganic nanoparticles have wide applications in the detection of analytes and in biological assays. A large number of these assays rely on the ability of gold nanoparticles (AuNPs, in the 20 nm diameter size range) to undergo a color change from red to blue upon aggregation. AuNP assays can be based on cross-linking, non-cross linking or unmodified charge-based aggregation. Nucleic acid-based probes, monoclonal antibodies, and molecular-affinity agents can be attached by covalent or non-covalent means. Surface plasmon resonance and SERS techniques can be utilized. Silver NPs also have attractive optical properties (higher extinction coefficient). Combinations of AuNPs and AgNPs in nanocomposites can have additional advantages. Magnetic NPs and ZnO, TiO2 and ZnS as well as insulator NPs including SiO2 can be employed in colorimetric assays, and some can act as peroxidase mimics in catalytic applications. This review covers the synthesis and stabilization of inorganic NPs and their diverse applications in colorimetric and optical assays for analytes related to environmental contamination (metal ions and pesticides), and for early diagnosis and monitoring of diseases, using medically important biomarkers.
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Affiliation(s)
- Amir Ghasemi
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran and Advances Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
| | - Navid Rabiee
- Department of Chemistry, Shahid Beheshti University, Tehran, Iran
| | - Sepideh Ahmadi
- Advances Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran and Department of Biology, Faculty of Basic Sciences, University of Zabol, Zabol, Iran
| | - Shabnam Hashemzadeh
- Department of Medical Physics and Biomedical Engineering, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran and Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Science, Tabriz, Iran
| | - Farshad Lolasi
- Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, 81746-73441, Iran and Department of Agronomy and Plant Breeding, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
| | - Mahnaz Bozorgomid
- Department of Pharmaceutical Chemistry, Islamic Azad University of Pharmaceutical Sciences Branch, Tehran, Iran
| | - Alireza Kalbasi
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Behzad Nasseri
- Departments of Microbiology and Microbial Biotechnology and Nanobiotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran and Chemical Engineering Deptartment and Bioengineeing Division, Hacettepe University, 06800, Beytepe, Ankara, Turkey
| | - Amin Shiralizadeh Dezfuli
- Advances Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran and Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Amir Reza Aref
- Belfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Mahdi Karimi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran. and Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran and Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA. and Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA and Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA
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Pirdadeh-Beiranvand M, Afkhami A, Madrakian T. Ag nanoparticles for determination of bisphenol A by resonance light-scattering technique. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1350-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Simple and rapid silver nanoparticles based antioxidant capacity assays: Reactivity study for phenolic compounds. Food Chem 2018; 256:342-349. [PMID: 29606458 DOI: 10.1016/j.foodchem.2018.02.141] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 02/16/2018] [Accepted: 02/25/2018] [Indexed: 12/27/2022]
Abstract
A single-step, rapid (10 min), sensitive silver nanoparticles (AgNPs) based spectrophotometric method for antioxidant capacity (AOC) assay has been developed. The assay is based on the ability of natural polyphenols to reduce Ag(I) and stabilize the produced AgNPs(0) at room temperature. Localized surface plasmon resonance (LSPR) of AgNPs at ≈420 nm is then measured. Using different conditions of pH (8.4) and temperature (45 °C) a further assay based on the production of AgNPs with selectivity for flavonols was also developed. The reactivity of the two AgNPs based assays vs. 15 polyphenols belonging to different chemical classes and 9 different samples has been studied and compared with ABTS, Folin and AuNPs based methods for AOC. The proposed assays had good reproducibility (RSD ≤ 13) and are simple, sensitive and cost effective. Moreover, used in conjunction with the classical AOC assays, can improve the information on the polyphenolic pool of food samples.
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38
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Fan M, Gong L, Huang Y, Wang D, Gong Z. Facile preparation of silver nanoparticle decorated chitosan cryogels for point-of-use water disinfection. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 613-614:1317-1323. [PMID: 28968934 DOI: 10.1016/j.scitotenv.2017.09.256] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/23/2017] [Accepted: 09/24/2017] [Indexed: 05/10/2023]
Abstract
In this study, silver nanoparticle decorated chitosan (CS/Ag NP) cryogels were fabricated through a simple freeze-drying process for point-of-use (POU) water disinfection. The CS/Ag NP cryogels showed high porosity, good mechanical properties, an excellent water absorption capability, and most importantly, an efficient bactericidal feature. The absorption capacity for water was found to be 47g/g, approximately 90% of which was recovered by simple squeezing. Three different sizes of Ag NPs were compared regarding their bactericidal capability against both Escherichia coli (E. coli) and Bacillus subtilis (B. subtilis). Under optimum conditions, a 3 log reduction of bacteria was observed by holding the bacteria suspension (108 colony forming units (cfu)/mL) in the cryogels for 5min. Reduction was further increased to a 4 log when the contact time was doubled. The silver content in the cryogels was found to only be 7.5mg/g. Furthermore, the total Ag in processed water was found to only be 22μg/L, half of the safety limit set by China (<50μg/L). The bactericidal effectiveness of the material for real surface water samples was also demonstrated by treating water samples with different water quality matrices, including lake water and sewage water samples. In all three treated lake water samples, both the total bacteria and E. coli met the regulations for drinking water in China (<100cfu/mL for total bacteria and negative for E. coli). CS/Ag NP cryogels can be used for drinking water disinfection during disaster relief and in contingency water supply applications.
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Affiliation(s)
- Meikun Fan
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China; State-province Joint Engineering Laboratory of Spatial Information Technology of High-Speed Rail Safety, Chengdu 610031, China.
| | - Lin Gong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yuting Huang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Dongmei Wang
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Zhengjun Gong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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39
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Wang C, Gao X, Chen Z, Chen Y, Chen H. Preparation, Characterization and Application of Polysaccharide-Based Metallic Nanoparticles: A Review. Polymers (Basel) 2017; 9:E689. [PMID: 30965987 PMCID: PMC6418682 DOI: 10.3390/polym9120689] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 12/03/2017] [Accepted: 12/05/2017] [Indexed: 12/25/2022] Open
Abstract
Polysaccharides are natural biopolymers that have been recognized to be the most promising hosts for the synthesis of metallic nanoparticles (MNPs) because of their outstanding biocompatible and biodegradable properties. Polysaccharides are diverse in size and molecular chains, making them suitable for the reduction and stabilization of MNPs. Considerable research has been directed toward investigating polysaccharide-based metallic nanoparticles (PMNPs) through host⁻guest strategy. In this review, approaches of preparation, including top-down and bottom-up approaches, are presented and compared. Different characterization techniques such as scanning electron microscopy, transmission electron microscopy, dynamic light scattering, UV-visible spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction and small-angle X-ray scattering are discussed in detail. Besides, the applications of PMNPs in the field of wound healing, targeted delivery, biosensing, catalysis and agents with antimicrobial, antiviral and anticancer capabilities are specifically highlighted. The controversial toxicological effects of PMNPs are also discussed. This review can provide significant insights into the utilization of polysaccharides as the hosts to synthesize MPNs and facilitate their further development in synthesis approaches, characterization techniques as well as potential applications.
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Affiliation(s)
- Cong Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Xudong Gao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Zhongqin Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Yue Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Haixia Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
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40
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Li Z, Yang Y, Zeng Y, Wang J, Liu H, Guo L, Li L. Novel imidazole fluorescent poly(ionic liquid) nanoparticles for selective and sensitive determination of pyrogallol. Talanta 2017; 174:198-205. [PMID: 28738568 DOI: 10.1016/j.talanta.2017.06.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/21/2017] [Accepted: 06/02/2017] [Indexed: 02/07/2023]
Abstract
This paper reports novel imidazole fluorescent poly(ionic liquid) nanoparticles (FPILNs) of poly(1-[(4-methyphenyl)methyl]-3-vinyl-imidazolium bromide (poly([MVI]Br) for selective and sensitive determination of pyrogallol. An imidazole ionic liquid of 1-[(4-methyphenyl)methyl]-3-vinyl-imidazolium bromide ([MVI]Br) was synthesized and used as the only monomer to obtain poly([MVI]Br) possessing phenyl fluorophores using a radical polymerization technique. The obtained poly([MVI]Br) can form nanoparticles in water. Scanning electron microscopy and dynamic light scattering results revealed majority of poly([MVI]Br) FPILNs with diameters ranging from 40 to 400nm. Although [MVI]Br showed weak fluorescence intensity, poly([MVI]Br) FPILNs exhibited strong fluorescence intensity with a quantum yield of 0.192, which is attributed to the presence of significant number of phenyl fluorophores and rigid construction. The selective and sensitive determination of pyrogallol was achieved through fluorescence quenching of poly([MVI]Br) FPILNs, and the quenching was attributed to the oxidation of poly([MVI]Br) FPILNs by O2˙¯ produced by pyrogallol autoxidation. The poly([MVI]Br) FPILNs-based sensor demonstrated a good linear relationship between the extent of fluorescence quenching and the concentration of pyrogallol in a range of 0.05 - 10.0μM, achieving a detection limit of 0.01μM. Furthermore, the poly([MVI]Br) FPILNs-based assay detected pyrogallol in environmental water samples, suggesting its potential to be applied for practical purposes.
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Affiliation(s)
- Zhouyang Li
- School of Petrochemical Engineering, Changzhou University, Changzhou 213016, PR China; College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, PR China
| | - Yiwen Yang
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, PR China
| | - Yanbo Zeng
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, PR China.
| | - Jianbo Wang
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, PR China
| | - Haiqing Liu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, PR China
| | - Longhua Guo
- Institute of Nanomedicine and Nanobiosensing, Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou 350108, PR China
| | - Lei Li
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, PR China.
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Jafari M, Tashkhourian J, Absalan G. Chiral recognition of tryptophan enantiomers using chitosan-capped silver nanoparticles: Scanometry and spectrophotometry approaches. Talanta 2017; 178:870-878. [PMID: 29136908 DOI: 10.1016/j.talanta.2017.10.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 10/03/2017] [Accepted: 10/04/2017] [Indexed: 01/02/2023]
Abstract
A new, fast and inexpensive colorimetric sensor was developed for chiral recognition of tryptophan enantiomers using chitosan-capped silver nanoparticles. The function of the sensor was based on scanometry and spectrophotometry of the colored product of a reaction solution containing a mixture of chitosan-capped silver nanoparticles, phosphate buffer and tryptophan enantiomers. The image of the colored solution was taken using the scanometer and the corresponding color values were obtained using Photoshop software which subsequently were used for optimization of the experimental parameters as the analytical signal. Two types of color values system were investigated: RGB (red, green and blue values) and CMYK (cyan, magenta, yellow and black values). The color values indicated that L-tryptophan had better interaction than D-tryptophan with chitosan-capped silver nanoparticles. A linear relationship between the analytical signal and the concentration of L-tryptophan was obtained in the concentration range of 1.3 × 10-5-4.6 × 10-4molL-1. Detection limits, were obtained to be 2.1 × 10-6, 2.4 × 10-6 and 3.8 × 10-6molL-1 for L-tryptophan based on R (red), G (green) and B (blue) values, respectively.
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Affiliation(s)
- Marzieh Jafari
- Professor Massoumi Laboratory, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran
| | - Javad Tashkhourian
- Professor Massoumi Laboratory, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran.
| | - Ghodratollah Absalan
- Professor Massoumi Laboratory, Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran.
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Mohammadi S, Khayatian G. Colorimetric detection of biothiols based on aggregation of chitosan-stabilized silver nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 185:27-34. [PMID: 28531847 DOI: 10.1016/j.saa.2017.05.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/11/2017] [Accepted: 05/16/2017] [Indexed: 06/07/2023]
Abstract
We have described a simple and reliable colorimetric method for the sensing of biothiols such as cysteine, homocysteine, and glutathione in biological samples. The selective binding of chitosan capped silver nanoparticles to biothiols induced aggregation of the chitosan-Ag NPs. But the other amino acids that do not have thiol group cannot aggregate the chitosan-Ag NPs. Aggregation of chitosan-Ag NPs has been confirmed with UV-vis absorption spectra, zeta potential and transmission electron microscopy images. Under optimum conditions, good linear relationships existed between the absorption ratios (at A500/A415) and the concentrations of cysteine, homocysteine, and glutathione in the range of 0.1-10.0μM with detection limits of 15.0, 84.6 and 40.0nM, respectively. This probe was successfully applied to detect these biothiols in biological samples (urine and plasma).
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Affiliation(s)
- Somayeh Mohammadi
- Department of Chemistry, Faculty of Science, University of Kurdistan, P.O. Box 416, 66177-15175 Sanandaj, Iran.
| | - Gholamreza Khayatian
- Department of Chemistry, Faculty of Science, University of Kurdistan, P.O. Box 416, 66177-15175 Sanandaj, Iran
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Choudhury R, Purkayastha A, Debnath D, Misra TK. Synthesis and study of aggregation kinetics of fluorescence active N -(1-Naphthyl)ethylenediammonium cations functionalized silver nanoparticles for a chemo-sensor probe. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.04.121] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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44
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Ul-Islam M, Ullah MW, Khan S, Manan S, Khattak WA, Ahmad W, Shah N, Park JK. Current advancements of magnetic nanoparticles in adsorption and degradation of organic pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:12713-12722. [PMID: 28378308 DOI: 10.1007/s11356-017-8765-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 03/07/2017] [Indexed: 05/12/2023]
Abstract
Nanotechnology is a fast-emerging field and has received applications in almost every field of life. Exploration of new synthetic technologies for size and shape control of nanomaterials is getting immense consideration owing to their exceptional properties and applications. Magnetic nanoparticles (MNPs) are among the most important group of nanoparticles thanks to their diverse applications in medical, electronic, environmental, and industrial sectors. There have been numerous synthetic routes of MNPs including thermal decomposition, co-precipitation, microemulsion, microwave assisted, chemical vapor deposition, combustion synthesis, and laser pyrolysis synthesis. The synthesized MNPs have been successfully applied in medical fields for therapy, bioimaging, drug delivery, and so on. Among environmental aspects, there has been great intimidation of organic pollutants in air and water. Utilization of various wastes as adsorbents has removed 80 to 99.9% of pollutants from contaminated water. MNPs as adsorbents compared to coarse-grained counterparts have seven times higher capacity in removing water pollutants and degrading organic contaminants. This study is focused to introduce and compile various routes of MNP synthesis together with their significant role in water purifications and degradation of organic compounds. The review has compiled recent investigation, and we hope it will find the interest of researchers dealing with nanoparticles and environmental research. Graphical abstract Synthesis and applications of magnetic nanoparticles.
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Affiliation(s)
- Mazhar Ul-Islam
- Department of Chemical Engineering, Dhofar University, Şalālah, Oman
| | - Muhammad Wajid Ullah
- Department of Chemical Engineering, Kyungpook National University, Daegu, 702-701, South Korea
- Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, People's Republic of China
| | - Shaukat Khan
- Department of Chemical Engineering, Kyungpook National University, Daegu, 702-701, South Korea
| | - Shehrish Manan
- National Key Laboratory of Crop Genetic Improvement, College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Waleed Ahmad Khattak
- Department of Chemical Engineering, Kyungpook National University, Daegu, 702-701, South Korea
- Liquid Fill Department, Tetrosyl Ltd., Landshire, Bridge Hall Lane, Bury, UK
| | - Wasi Ahmad
- Department of Chemical Engineering, Dhofar University, Şalālah, Oman
| | - Nasrullah Shah
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan, Pakistan.
| | - Joong Kon Park
- Department of Chemical Engineering, Kyungpook National University, Daegu, 702-701, South Korea.
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Khalililaghab S, Momeni S, Farrokhnia M, Nabipour I, Karimi S. Development of a new colorimetric assay for detection of bisphenol-A in aqueous media using green synthesized silver chloride nanoparticles: experimental and theoretical study. Anal Bioanal Chem 2017; 409:2847-2858. [PMID: 28180989 DOI: 10.1007/s00216-017-0230-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 01/13/2017] [Accepted: 01/26/2017] [Indexed: 10/20/2022]
Abstract
In the present study, a cost-effective, green and simple synthesis method was applied for preparation of stable silver chloride nanoparticles (AgCl-NPs). The method was done by forming AgCl-NPs from Ag+ ions using aqueous extract of brown algae (Sargassum boveanum) obtained from the Persian Gulf Sea. This extract served as capping agent during the formation of AgCl-NPs. Creation of AgCl-NPs was confirmed by UV-visible spectroscopy, powder X-ray diffraction, energy-dispersive X-ray spectroscopy, and high-resolution transmission electron microscopy, while the morphology and size analyses were characterized using high-resolution transmission electron microscopy and dynamic light scattering. After optimization of some experimental conditions, particularly pH, a simple and facile system was developed for the naked-eye detection of bisphenol-A. Moreover, a theoretical study of AgCl interaction with bisphenol-A was performed at the density functional level of theory in both gas and solvent phases. Theoretical results showed that electrostatic and van der Waal interactions play important roles in complexation of bisphenol-A with AgCl-NPs, which can lead to aggregation of the as-prepared AgCl-NPs and results in color change from specific yellow to dark purple, where a new aggregation band induced at 542 nm appears. The absorbance at 542 nm was found to be linearly dependent on the bisphenol-A concentration in the range of 1 × 10-6-1 × 10-4 M, with limit of detection of 45 nM. In conclusion, obtained results from the present study can open up an innovative application of the green synthesis of AgCl-NPs using brown algae extract as colorimetric sensors.
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Affiliation(s)
- Shiva Khalililaghab
- Department of Chemistry, College of Science, Persian Gulf University, Bushehr, Iran
| | - Safieh Momeni
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, 7514763448, Iran
| | - Maryam Farrokhnia
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, 7514763448, Iran
| | - Iraj Nabipour
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, 7514763448, Iran
| | - Sadegh Karimi
- Department of Chemistry, College of Science, Persian Gulf University, Bushehr, Iran.
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Shi Y, Yang L, Zhu J, Yang J, Liu S, Qiao M, Duan R, Hu X. Resonance Rayleigh scattering technique for simple and sensitive analysis of tannic acid with carbon dots. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 173:817-821. [PMID: 27810773 DOI: 10.1016/j.saa.2016.10.054] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 10/19/2016] [Accepted: 10/26/2016] [Indexed: 06/06/2023]
Abstract
Carbon dots (CDs) are raising a substantial amount of attention owing to their many unique and novel physicochemical properties. Herein one-pot synthesized CDs, to the best of our knowledge, were first served as the robust nanoprobe for detection tannic acid (TA) based on resonance Rayleigh scattering technique. The as-prepared CDs can combine with TA via hydrogen bond, resulting in remarkable enhancement of scattering signal with no changes in the fluorescence of CDs. Therefore, a novel protocol for TA determination was established and this strategy allowed quantitative detection of TA in the linear range of 0.2-10.0μmolL-1 with an excellent detection limit of 9.0nmolL-1. Moreover, the CDs based nanoprobe can be applied to the determination of TA in water sample with satisfactory results. Our study can potentially influence our current views on CDs and particularly impressive and offers new insights into application of CDs beyond the traditional understanding of CDs.
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Affiliation(s)
- Ying Shi
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Liu Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Jinghui Zhu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Jidong Yang
- College of Chemical and Environmental Engineering, Chongqing Three Gorges University, Wanzhou, Chongqing 404100, China
| | - Shaopu Liu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Man Qiao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Ruilin Duan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Xiaoli Hu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
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47
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Selective and Sensitive Colorimetric Detection of Hg2+ at Wide pH Range Using Green Synthesized Silver Nanoparticles as Probe. J CLUST SCI 2016. [DOI: 10.1007/s10876-016-1109-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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48
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Salem JK, El-Nahhal IM, Najri BA, Hammad TM. Utilization of surface Plasmon resonance band of silver nanoparticles for determination of critical micelle concentration of cationic surfactants. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.10.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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49
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Choudhury R, Purkayastha A, Debnath D, Misra TK. Recognition of silver nanoparticles surface-adsorbed citrate anions by macrocyclic polyammonium cations: a spectrophotometric approach to study aggregation kinetics and evaluation of association constant. J Mol Recognit 2016; 29:452-61. [DOI: 10.1002/jmr.2544] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 02/08/2016] [Accepted: 03/16/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Rupasree Choudhury
- Department of Chemistry; National Institute of Technology; Agartala Tripura 799046 India
| | - Atanu Purkayastha
- Department of Chemistry; National Institute of Technology; Agartala Tripura 799046 India
| | - Diptanu Debnath
- Department of Chemistry; National Institute of Technology; Agartala Tripura 799046 India
| | - Tarun Kumar Misra
- Department of Chemistry; National Institute of Technology; Agartala Tripura 799046 India
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