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de Souza PG, Pallone JAL, Orlando EA, Costa-Santos AC, Ayres EMM, Rosenthal A, Teodoro AJ. Evaluation of oxalic acid extraction and quantification methods in the different purslane ( Portulaca oleracea L.) matrices and spinach ( Spinacea oleracea). MethodsX 2024; 13:102863. [PMID: 39157815 PMCID: PMC11326941 DOI: 10.1016/j.mex.2024.102863] [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: 04/12/2024] [Accepted: 07/12/2024] [Indexed: 08/20/2024] Open
Abstract
Purslane (Portulaca oleracea) and spinach (Spinacea oleracea) are species with elevated levels of oxalic acid, an antinutrient that interferes in the bioaccessibility of minerals such as calcium and iron. Evaluating methods to determine oxalic acid content with reduced matrix interference, such as employing Flame Atomic Absorption Spectrometry (FAAS), can enhance the specificity of determinations. The different matrices of purslane (whole plant, leaves, and juice) and spinach (whole plant) were tested using three extraction methods (M1, M2, and M3). The oxalic acid content was evaluated by UV-vis spectrophotometry and FAAS (Flame Atomic Absorption Spectrometry). The absence of the precipitation step in M1 resulted in high levels of oxalic acid in the investigated matrices. The quantification of oxalic acid by FAAS for M2 (6M HCl for 1 hour at 100°C) and M3 (0.25N HCl for 15 minutes at 100°C) in the samples of purslane leaves and spinach whole plants yielded statistically similar results. However, the analysis by UV-vis spectrophotometry for M2 and M3 showed significant discrepancies in all evaluated samples, suggesting interference from colored compounds in the food matrix.•Comparison of methods of extraction•Comparison of UV-vis spectrophotometer and FAAS in the quantification of oxalic acid•Analysis of antinutrients in plant matrices.
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Affiliation(s)
- Pâmela Gomes de Souza
- Laboratory of Food Analysis, Graduate Program in Food Nutrition, Fluminense Federal University, Rua Mário Santana Braga, 30 - Niteroi, RJ, Brazil
| | - Juliana Azevedo Lima Pallone
- Laboratory of Food Analysis by Spectroscopy, Faculty of Food Engineering, State University of Campinas, Rua Monteiro Lobato, 80 Barão Geraldo, Campinas, SP, Brasil
| | - Eduardo Adilson Orlando
- Laboratory of Food Analysis by Spectroscopy, Faculty of Food Engineering, State University of Campinas, Rua Monteiro Lobato, 80 Barão Geraldo, Campinas, SP, Brasil
| | - Augusto César Costa-Santos
- Laboratory of Food Analysis by Spectroscopy, Faculty of Food Engineering, State University of Campinas, Rua Monteiro Lobato, 80 Barão Geraldo, Campinas, SP, Brasil
| | - Ellen Mayra Menezes Ayres
- Sensory and Consumer Science Laboratory, Postgraduate Program in Food and Nutrition, Federal University of the State of Rio de Janeiro Laboratorio, Av. Pasteur -Urca, 29, Rio de Janeiro, Brazil
| | - Amauri Rosenthal
- Embrapa Food Technology, Av. das América, 29501, Guaratiba, Rio de Janeiro, RJ, Brazil
| | - Anderson Junger Teodoro
- Laboratory of Food Analysis, Graduate Program in Food Nutrition, Fluminense Federal University, Rua Mário Santana Braga, 30 - Niteroi, RJ, Brazil
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García-Almodóvar V, Ardiles PDR, Prashar S, Páez PL, Gómez-Ruiz S. Unleashing the antibacterial and antibiofilm potential of silica-based nanomaterials functionalized with an organotin(IV) compound. J Mater Chem B 2024; 12:9056-9073. [PMID: 39158729 DOI: 10.1039/d4tb01106f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
Abstract
Bacterial diseases caused by superbugs are expected to be the main cause of death worldwide within a decade as a consequence of the resistance they are acquiring to the antibiotics currently in use, therefore, the field of new antibacterial treatments is currently being thoroughly studied. The present work focuses on the synthesis, functionalization, characterization and antibacterial behaviour of different systems based on three different silica-based nanostructured materials (MSN, mesoporous silica nanoparticles, SBA-15 Santa Barbara amorphous-15 and FSP fibrous slica nanoparticles) which serve as scaffolds for the support of different platforms to target and treat bacterial diseases and biofilm formation. Thus, (3-carboxypropyl)triphenylphosphonium bromide (PPh3+) and a cytotoxic organotin(IV) fragment (Sn) have been incorporated in the silica-based materials to study their potential activity in different antibacterial applications. After a complete characterization of the synthesized systems, which confirmed the incorporation of both the targeting and the therapeutic fragments within the nanostructured materials, the antibacterial study of the materials demonstrated bactericidal capacity against Escherichia coli and perturbation of the bacteria metabolism via oxidative stress through an enhanced ROS (reactive oxygen species) production. In addition, biofilm inhibition and eradication tests of bacterial strains were carried out, showing that the activity of the materials in both biofilm inhibition and eradication is dependent on the concentration of the material. Furthemore, the material MSN-AP(1:1)-PPh3+-Sn containing the targeting triphenylphosphonium and a "SnPh3" fragment is capable of inhibiting and eradicating up to 50% of the formation of biofilms, which is outstanding for metallodrug-functionalized silica-based systems compared with other materials based on metal nanoparticles supported on silica. Finally, a hemolysis study was carried out with the nanostructured systems proving to be non-toxic, making them adequate for their subsequent use in preclinical trials through in vivo models.
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Affiliation(s)
- Victoria García-Almodóvar
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, ESCET, Universidad Rey Juan Carlos, Calle Tulipán s/n, E-28933 Móstoles, Madrid, Spain.
- Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Haya de la Torre y Medina Allende, X5000HUA Córdoba, Argentina.
| | - Perla Del Rosario Ardiles
- Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Haya de la Torre y Medina Allende, X5000HUA Córdoba, Argentina.
| | - Sanjiv Prashar
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, ESCET, Universidad Rey Juan Carlos, Calle Tulipán s/n, E-28933 Móstoles, Madrid, Spain.
| | - Paulina Laura Páez
- Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Haya de la Torre y Medina Allende, X5000HUA Córdoba, Argentina.
| | - Santiago Gómez-Ruiz
- COMET-NANO Group, Departamento de Biología y Geología, Física y Química Inorgánica, ESCET, Universidad Rey Juan Carlos, Calle Tulipán s/n, E-28933 Móstoles, Madrid, Spain.
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Karimi Afshar S, Rostamzadeh F, Bigdeli MR, Mortazavi Moghadam F. Myrtenol-Loaded Fatty Acid Nanocarriers Protect Rat Brains Against Ischemia-Reperfusion Injury: Antioxidant and Anti-Inflammatory Effects. Chem Biol Drug Des 2024; 104:e14633. [PMID: 39317688 DOI: 10.1111/cbdd.14633] [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: 06/26/2024] [Revised: 08/28/2024] [Accepted: 09/09/2024] [Indexed: 09/26/2024]
Abstract
This research investigated the preventive effects of myrtenol (MYR), fatty acid nanocarriers (FANC), and myrtenol-loaded FANC (MYR + FANC) on neurological disturbance, stroke volume, the levels of malondialdehyde (MDA), superoxide dismutase (SOD), and tumor necrosis factor-alpha (TNF-α) in the brain with ischemia-reperfusion injuries induced by middle cerebral artery occlusion (MCAO) in rats. Seventy two Wistar male rats were divided into six main groups. The groups were sham, ischemia-reperfusion group (MACO), MACO-MYR (50 mg/kg), MACO-FANC (50 and 100 mg/kg), and MACO-MYR + FANC (50 mg/kg). Stroke volume, neurological deficit scores, and the brain levels of MDA, SOD, and TNF-α were examined with TTC staining, observation, and ELISA, respectively. Pretreatment with MYR, FANC (100 mg/kg), and MYR + FANC reduced the neurological deficit score and cerebral infarction volume. MYR, FANC (100 mg/kg), and MYR + FANC pretreatment increased and decreased brain SOD and MDA levels compared to MACO group, respectively. The TNF-α level decreased in the MYR + FANC group compared to MCAO and MCAO-MYR groups in the brain. The use of FANC (100 mg/kg), MYR, and MYR + FANC has protective effects against oxidative stress and ischemia-reperfusion injury. FANC probably improve the bioavailability of MYR, as MYR+ FANC had more therapeutic effects on the reduction of ischemia-reperfusion injuries, inflammation, and oxidative stress.
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Affiliation(s)
- Shima Karimi Afshar
- Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Farzaneh Rostamzadeh
- Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Reza Bigdeli
- Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
- Institute for Cognitive and Brain Science, Shahid Beheshti University, Tehran, Iran
| | - Fatemeh Mortazavi Moghadam
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Tang T, Gao Y, He Y, Liang X, Li J, Xu J, Li C, Luo L, Yao J, Bai H. Precise measurement of chiral spectrum in the ultraviolet band using weak measurement and a deep neural network model. OPTICS LETTERS 2024; 49:4302-4305. [PMID: 39090919 DOI: 10.1364/ol.527631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Accepted: 06/28/2024] [Indexed: 08/04/2024]
Abstract
Circular dichroism (CD) spectrum and optical rotation (OR) spectrum, crucial for understanding molecular properties and configurations, present challenges due to limited testing methods and equipment accuracy in the ultraviolet (UV) region. This study proposes a weak measurement system for chiral signals in varying concentrations in the ultraviolet range, optimized using a deep neural network (DNN) model. Introducing different post-selections to detect the circular dichroism spectrum and optical rotation spectrum separately, with contrast as a probe, it achieves a detection resolution of up to 10-6 rad. Moreover, the fitted value of the training data can reach 0.9989, enhancing the prediction accuracy of chiral molecule concentrations. This method exhibits considerable promise for applications in chiral measurement and sensor technologies.
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Almarashi JQM, Gadallah AS, Shaban M, Ellabban MA, Hbaieb K, Kordy MGM, Zayed M, Mohamed AAH. Quick methylene blue dye elimination via SDS-Ag nanoparticles catalysts. Sci Rep 2024; 14:15227. [PMID: 38956146 PMCID: PMC11220135 DOI: 10.1038/s41598-024-65491-6] [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: 01/06/2024] [Accepted: 06/20/2024] [Indexed: 07/04/2024] Open
Abstract
Methylene blue dye, being toxic, carcinogenic and non-biodegradable, poses a serious threat for human health and environmental safety. The effective and time-saving removal of such industrial dye necessitates the use of innovative technologies such as silver nanoparticle-based catalysis. Utilizing a pulsed Nd:YAG laser operating at the second harmonic generation of 532 nm with 2.6 J energy per pulse and 10 ns pulse duration, Ag nanoparticles were synthesized via an eco-friendly method with sodium dodecyl sulphate (SDS) as a capping agent. Different exposure times (15, 30, and 45 min) resulted in varying nanoparticle sizes. Characterization was achieved through UV-Vis absorption spectroscopy, scanning electron microscopy (SEM) imaging, and energy dispersive X-ray (EDX). Lorentzian fitting was used to model nanoparticle size, aligning well with SEM results. Mie's theory was applied to evaluate the absorption, scattering, and extinction cross-sectional area spectra. EDX revealed increasing Ag and carbon content with exposure time. The SDS-caped AgNPs nanoparticles were tested as catalyst for methylene blue degradation, achieving up to 92.5% removal in just 12 min with a rate constant of 0.2626 min-1, suggesting efficient and time-saving catalyst compared to previously reported Ag-based nanocatalysts.
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Affiliation(s)
- Jamal Q M Almarashi
- Physics department, College of Science, Taibah University, 30001, Madina, Saudi Arabia
| | - A-S Gadallah
- Physics department, College of Science, Taibah University, 30001, Madina, Saudi Arabia
- Department of Laser Sciences and Interactions, National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt
| | - Mohamed Shaban
- Department of Physics, Faculty of Science, Islamic University of Madinah, 42351, Madinah, Saudi Arabia
| | - M A Ellabban
- Physics department, College of Science, Taibah University, 30001, Madina, Saudi Arabia
- Physics Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Kais Hbaieb
- Mechanical department, College of Engineering, Taibah University, P.O. Box 344, Al-Madinah Al-Munawwara, Kingdom of Saudi Arabia.
| | - Mohamed G M Kordy
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62514, Egypt
- Biochemistry Department, Faculty of Science, Beni-Suef University, P.O. Box 62521, Beni-Suef, Egypt
| | - Mohamed Zayed
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62514, Egypt
| | - Abdel-Aleam H Mohamed
- Physics department, College of Science, Taibah University, 30001, Madina, Saudi Arabia.
- Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62511, Egypt.
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6
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Zeng Q, Cheng Z, Li L, Yang Y, Peng Y, Zhou X, Zhang D, Hu X, Liu C, Chen X. Quantitative analysis of the quality constituents of Lonicera japonica Thunberg based on Raman spectroscopy. Food Chem 2024; 443:138513. [PMID: 38277933 DOI: 10.1016/j.foodchem.2024.138513] [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: 10/16/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024]
Abstract
Quantitative analysis of the quality constituents of Lonicera japonica (Jinyinhua [JYH]) using a feasible method provides important information on its evaluation and applications. Limitations of sample pretreatment, experimental site, and analysis time should be considered when identifying new methods. In response to these considerations, Raman spectroscopy combined with deep learning was used to establish a quantitative analysis model to determine the quality of JYH. Chlorogenic acid and total flavonoids were identified as analysis targets via network pharmacology. High performance liquid chromatograph and ultraviolet spectroscopy were used to construct standard curves for quantitative analysis. Raman spectra of JYH extracts (1200) were collected. Subsequently, models were built using partial least squares regression, Support Vector Machine, Back Propagation Neural Network, and One-dimensional Convolutional Neural Network (1D-CNN). Among these, the 1D-CNN model showed superior prediction capability and had higher accuracy (R2 = 0.971), and lower root mean square error, indicating its suitability for rapid quantitative analysis.
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Affiliation(s)
- Qi Zeng
- Center for Biomedical-photonics and Molecular Imaging, Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China; Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xidian University, Xi'an, Shaanxi 710126, China; Innovation Center for Advanced Medical Imaging and Intelligent Medicine, Guangzhou Institute of Technology, Xidian University, Guangzhou, Guangdong 510555, China
| | - Zhaoyang Cheng
- Center for Biomedical-photonics and Molecular Imaging, Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China; Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xidian University, Xi'an, Shaanxi 710126, China
| | - Li Li
- Center for Biomedical-photonics and Molecular Imaging, Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China; Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xidian University, Xi'an, Shaanxi 710126, China
| | - Yuhang Yang
- Center for Biomedical-photonics and Molecular Imaging, Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China; Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xidian University, Xi'an, Shaanxi 710126, China
| | - Yangyao Peng
- Center for Biomedical-photonics and Molecular Imaging, Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China; Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xidian University, Xi'an, Shaanxi 710126, China
| | - Xianzhen Zhou
- Center for Biomedical-photonics and Molecular Imaging, Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China; Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xidian University, Xi'an, Shaanxi 710126, China
| | - Dongjie Zhang
- Center for Biomedical-photonics and Molecular Imaging, Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China; Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xidian University, Xi'an, Shaanxi 710126, China; Innovation Center for Advanced Medical Imaging and Intelligent Medicine, Guangzhou Institute of Technology, Xidian University, Guangzhou, Guangdong 510555, China
| | - Xiaojia Hu
- Shanghai Nature's Sunshine Health Products Co. Ltd, Shanghai 200040, China
| | - Chunyu Liu
- Zests Biotechnology Co. Ltd, Suzhou City 215143, China
| | - Xueli Chen
- Center for Biomedical-photonics and Molecular Imaging, Xi'an Key Laboratory of Intelligent Sensing and Regulation of trans-Scale Life Information, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710126, China; Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, Xidian University, Xi'an, Shaanxi 710126, China; Innovation Center for Advanced Medical Imaging and Intelligent Medicine, Guangzhou Institute of Technology, Xidian University, Guangzhou, Guangdong 510555, China.
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Yang X, Wang Y, Qu C, Tan B, Wang M, Li S, Huang J, Li J, Fang M, Cheng Z, Zhou N. Real time monitoring peripheral nerve function with ICG and BDA-ICG by NIR-II fluorescence imaging. Mater Today Bio 2024; 26:101084. [PMID: 38757055 PMCID: PMC11097087 DOI: 10.1016/j.mtbio.2024.101084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 04/18/2024] [Accepted: 05/03/2024] [Indexed: 05/18/2024] Open
Abstract
Neuroanatomical tract tracers are important for studying axoplasmic transport and the complex interconnections of the nervous system. Though traditional fluorescent tracers are widely used, they have several prominent drawbacks when imaging, including low resolutions and low tissue penetrations and inability to be supervised dynamically within a long peripheral nerve during the long term. Here, we explored the potential of ICG as a neural tracer for axoplasmic transport and for the first time demonstrated that ICG could be used to detect transport function within peripheral nerve by near-infrared region II (NIR-II) imaging. On basis of this finding, a novel bi-directional neural tracer biotinylated dextran amine-indocyanine green (BDA-ICG) was prepared and characterized with better long-term stability and higher nerve-to-background ratio than ICG in vivo, and successfully imaged the injured peripheral nerve from the healthy one within 24 h. Our results show that BDA-ICG are promising neural tracers and clinically available dyes with NIR-II emission tail characteristics as ICG.
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Affiliation(s)
- Xiaoqi Yang
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, 450052, Henan, China
- State Key Laboratory of Drug Research, Molecular Imaging Center, Shanghai Institute of Materia Medica Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Yuanyi Wang
- Department of Spinal Surgery, The First Hospital of Jilin University, Orthopedics Center, Jilin University, Changchun, 130021, China
| | - Chunrong Qu
- State Key Laboratory of Drug Research, Molecular Imaging Center, Shanghai Institute of Materia Medica Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Boyu Tan
- State Key Laboratory of Drug Research, Molecular Imaging Center, Shanghai Institute of Materia Medica Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Minjin Wang
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Senrui Li
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Jinsheng Huang
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Jiangnan Li
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, 450052, Henan, China
| | - Mengyuan Fang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, China
| | - Zhen Cheng
- State Key Laboratory of Drug Research, Molecular Imaging Center, Shanghai Institute of Materia Medica Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Nan Zhou
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, 450052, Henan, China
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de Miranda DB, Quintal S, Ferreira GB. Electronic analysis of n-propyl xanthate complexes with group 12 metals: a theoretical-experimental study. J Mol Model 2024; 30:163. [PMID: 38730058 DOI: 10.1007/s00894-024-05950-z] [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: 02/28/2024] [Accepted: 04/18/2024] [Indexed: 05/12/2024]
Abstract
CONTEXT Xanthates are organic compounds of great interest in coordination chemistry due to their different basic sites, which allow them to form complexes with different coordination modes and geometries. These compounds are relevant in the environment and act as heavy metal collectors in aqueous environments. In this theoretical-experimental work, electronic spectroscopy studies of n-propyl xanthate complexes with group 12 metals were performed. This study verified structural differences in these systems, depending on the environment in which they are inserted. In addition, structural differences were observed when the solid was changed to an n-hexane solution. Thus, it was observed that the complexes assume a mononuclear structure in solution, while they present a polymeric form in the solid phase. The electronic spectra obtained through TD-DFT calculations were compared to those of the previously synthesized complexes. In the final theoretical analysis, the main orbitals involved in these transitions were assigned using population analysis calculations. The synthesis of the complexes was confirmed through infrared (MID and FAR), UV‒Vis, Raman, and NMR-1H spectroscopic analyses. METHODS The structures of the mononuclear and polymeric complexes were optimized in vacuum and n-hexane. Under vacuum, DFT levels M06L/6-311 + + G** + LANL2TZ and M06L/def2-TZVP were used for the mononuclear complexes, and M06L/LANL2DZ + LANL2 were used for the polymer complexes. For the calculations of the mononuclear complexes in n-hexane, the same level of theory was used for the solid state. TD-DFT calculations for 300 excited states were performed with the same levels of theory and used the optimized structures of the complexes. Furthermore, population analysis was carried out on all the systems studied. Gaussian 09 software was used for the structure optimization, TD-DFT, and population analysis calculations. GaussSum software was used to evaluate the molecular orbitals and electronic spectra.
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Affiliation(s)
- Daniella B de Miranda
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal Fluminense, Outeiro de S. João Batista s/n., Centro, Niterói, RJ, 24210-130, Brazil
| | - Susana Quintal
- Departamento de Química Inorgânica, Instituto de Química, Universidade Federal Fluminense, Outeiro de S. João Batista s/n., Centro, Niterói, RJ, 24210-130, Brazil
| | - Glaucio B Ferreira
- Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal Fluminense, Outeiro de S. João Batista s/n., Centro, Niterói, RJ, 24210-130, Brazil.
- Departamento de Química Inorgânica, Instituto de Química, Universidade Federal Fluminense, Outeiro de S. João Batista s/n., Centro, Niterói, RJ, 24210-130, Brazil.
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Sandhu ZA, Raza MA, Alqurashi A, Sajid S, Ashraf S, Imtiaz K, Aman F, Alessa AH, Shamsi MB, Latif M. Advances in the Optimization of Fe Nanoparticles: Unlocking Antifungal Properties for Biomedical Applications. Pharmaceutics 2024; 16:645. [PMID: 38794307 PMCID: PMC11124843 DOI: 10.3390/pharmaceutics16050645] [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: 03/12/2024] [Revised: 04/25/2024] [Accepted: 05/02/2024] [Indexed: 05/26/2024] Open
Abstract
In recent years, nanotechnology has achieved a remarkable status in shaping the future of biological applications, especially in combating fungal diseases. Owing to excellence in nanotechnology, iron nanoparticles (Fe NPs) have gained enormous attention in recent years. In this review, we have provided a comprehensive overview of Fe NPs covering key synthesis approaches and underlying working principles, the factors that influence their properties, essential characterization techniques, and the optimization of their antifungal potential. In addition, the diverse kinds of Fe NP delivery platforms that command highly effective release, with fewer toxic effects on patients, are of great significance in the medical field. The issues of biocompatibility, toxicity profiles, and applications of optimized Fe NPs in the field of biomedicine have also been described because these are the most significant factors determining their inclusion in clinical use. Besides this, the difficulties and regulations that exist in the transition from laboratory to experimental clinical studies (toxicity, specific standards, and safety concerns) of Fe NPs-based antifungal agents have been also summarized.
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Affiliation(s)
- Zeshan Ali Sandhu
- Department of Chemistry, Faculty of Science, Hafiz Hayat Campus, University of Gujrat, Gujrat 50700, Pakistan; (Z.A.S.); (S.A.); (K.I.)
| | - Muhammad Asam Raza
- Department of Chemistry, Faculty of Science, Hafiz Hayat Campus, University of Gujrat, Gujrat 50700, Pakistan; (Z.A.S.); (S.A.); (K.I.)
| | - Abdulmajeed Alqurashi
- Department of Biology, College of Science, Taibah University, Madinah 42353, Saudi Arabia;
| | - Samavia Sajid
- Department of Chemistry, Faculty of Science, University of Engineering and Technology, Lahore 54890, Pakistan;
| | - Sufyan Ashraf
- Department of Chemistry, Faculty of Science, Hafiz Hayat Campus, University of Gujrat, Gujrat 50700, Pakistan; (Z.A.S.); (S.A.); (K.I.)
| | - Kainat Imtiaz
- Department of Chemistry, Faculty of Science, Hafiz Hayat Campus, University of Gujrat, Gujrat 50700, Pakistan; (Z.A.S.); (S.A.); (K.I.)
| | - Farhana Aman
- Department of Chemistry, The University of Lahore, Sargodha Campus, Sargodha 40100, Pakistan;
| | - Abdulrahman H. Alessa
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia;
| | - Monis Bilal Shamsi
- Centre for Genetics and Inherited Diseases (CGID), Taibah University, Madinah 42353, Saudi Arabia;
- Department Basic Medical Sciences, College of Medicine, Taibah University, Madinah 42353, Saudi Arabia
| | - Muhammad Latif
- Centre for Genetics and Inherited Diseases (CGID), Taibah University, Madinah 42353, Saudi Arabia;
- Department Basic Medical Sciences, College of Medicine, Taibah University, Madinah 42353, Saudi Arabia
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10
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Nayak M, Patel CB, Mishra A, Singh R, Singh RK. Unveiling the Influence of Glutathione in Suppressing the Conversion of Aspirin to Salicylic Acid: A Fluorescence and DFT Study. J Fluoresc 2024; 34:1441-1451. [PMID: 38530561 DOI: 10.1007/s10895-024-03665-1] [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: 01/10/2024] [Accepted: 03/11/2024] [Indexed: 03/28/2024]
Abstract
Aspirin is a commonly used nonsteroidal anti-inflammatory drug, associated with many adverse effects. The adverse effects of aspirin such as tinnitus, Reye's syndrome and gastrointestinal bleeding are caused due to conversion of aspirin into its active metabolite salicylic acid after oral intake. Glutathione is a naturally occurring antioxidant produced by the liver and nerve cells in the central nervous system. It helps to metabolize toxins, break down free radicles, and support immune function. This study aims to investigate and explore the possibility of inhibiting aspirin to salicylic acid conversion in presence of glutathione at a molecular level using spectroscopic techniques such as UV-Visible absorption, time-Resolved and time-dependent fluorescence and theoretical DFT/ TD-DFT calculations. The results of steady state fluorescence spectroscopy and time-dependent fluorescence indicated that the aspirin to salicylic acid conversion is considerably inhibited in presence of glutathione. Further, the results presented here might have significant clinical implications for individuals with variations in glutathione level.
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Affiliation(s)
- Monalisha Nayak
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Chandan Bhai Patel
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Anurag Mishra
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Ranjana Singh
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
- Government Polytecnic Rajgrah, Mirzapur, Bathua, 231001, India.
| | - Ranjan K Singh
- Department of Physics, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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11
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Li Z, Al-Wraikat M, Hao C, Liu Y. Comparison of Non-Covalent and Covalent Interactions between Lactoferrin and Chlorogenic Acid. Foods 2024; 13:1245. [PMID: 38672917 PMCID: PMC11048835 DOI: 10.3390/foods13081245] [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: 03/26/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Adding polyphenols to improve the absorption of functional proteins has become a hot topic. Chlorogenic acid is a natural plant polyphenol with anti-inflammatory, antioxidant, and anticancer properties. Bovine lactoferrin is known for its immunomodulatory, anticancer, antibacterial, and iron-chelating properties. Therefore, the non-covalent binding of chlorogenic acid (CA) and bovine lactoferrin (BLF) with different concentrations under neutral conditions was studied. CA was grafted onto lactoferrin molecules by laccase catalysis, free radical grafting, and alkali treatment. The formation mechanism of non-covalent and covalent complexes of CA-BLF was analyzed by experimental test and theoretical prediction. Compared with the control BLF, the secondary structure of BLF in the non-covalent complex was rearranged and unfolded to provide more active sites, the tertiary structure of the covalent conjugate was changed, and the amino group of the protein participated in the covalent reaction. After adding CA, the covalent conjugates have better functional activity. These lactoferrin-polyphenol couplings can carry various bioactive compounds to create milk-based delivery systems for encapsulation.
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Affiliation(s)
- Zekun Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an 710119, China; (Z.L.); (M.A.-W.)
| | - Majida Al-Wraikat
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an 710119, China; (Z.L.); (M.A.-W.)
| | - Changchun Hao
- College of Physics and Information Technology, Shaanxi Normal University, Xi’an 710119, China
| | - Yongfeng Liu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an 710119, China; (Z.L.); (M.A.-W.)
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12
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Ali ZSN, Okla MK, Kokilavani S, Abdel-Maksoud MA, Alatar AA, Sivaranjani PR, Al-Amri SS, Alaraidh IA, Khan SS. Unravelling the enhanced rifampicin photocatalytic degradation over green-synthesized SrO 2@SnIn 4S 8 p-n heterojunction: Pathway, toxicity evaluation and mechanistic insights. CHEMOSPHERE 2024; 352:141464. [PMID: 38364922 DOI: 10.1016/j.chemosphere.2024.141464] [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: 11/01/2023] [Revised: 01/23/2024] [Accepted: 02/13/2024] [Indexed: 02/18/2024]
Abstract
In recent years, the discharge of pharmaceutical drugs into aquatic ecosystems has become a growing concern, posing a significant threat to aquatic life. In response to this environmental challenge, advanced oxidation processes have gained prominence in wastewater treatment due to their efficacy in eliminating pharmaceutical pollutants and their potential for reusability. In this study, we have fabricated SnIn4S8 coupled SrO2 nano-heterojunction (NH) using a greener co-precipitation approach using leaf extract derived from Acaphyla wilkesiana. The resulting NH exhibited exceptional photocatalytic activity against rifampicin (RIF), achieving a remarkable 97.4% degradation under visible light, surpassing the performance of its individual components. The morphological characteristics of the NH were thoroughly analyzed through SEM, TEM, XRD, and XPS techniques, while EIS, DRS, and BET techniques provided valuable insights into its photocatalytic and optical properties. Furthermore, radical scavenging assays and ESR analysis identified hydroxyl radicals (•OH) and superoxide radicals (O2•-) were the species contributing to the visible light-driven photocatalytic degradation. The study also elucidated the potential degradation pathways and intermediates of RIF through GC-MS analysis. Additionally, the toxicity of the produced intermediates was assessed using the ECOSAR model. The findings have significant implications for the treatment of pharmaceutical pollutants and underscore the importance of eco-friendly synthesis methods in addressing environmental challenges.
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Affiliation(s)
- Zareen Suhara Nazeer Ali
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - Mohammad K Okla
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - S Kokilavani
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - Mostafa A Abdel-Maksoud
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Abdulrahman A Alatar
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - P R Sivaranjani
- School of Engineering, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Saud S Al-Amri
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Ibrahim A Alaraidh
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - S Sudheer Khan
- Department of Oral Medicine and Radiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, 600077, Tamil Nadu, India.
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13
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Chen GY, Lin YH, Fu CH, Lin CH, Muthiah B, Espulgar WV, Santos GN, Yu DE, Kasai T. Quantification of peracetic acid (PAA) in the H 2O 2 + acetic acid reaction by the wavelength shift analysis in near-UV/visible absorption region. ANAL SCI 2024; 40:489-499. [PMID: 38165524 DOI: 10.1007/s44211-023-00481-8] [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: 09/09/2023] [Accepted: 11/26/2023] [Indexed: 01/03/2024]
Abstract
In our study, we present an innovative method for the analysis and real-time monitoring of peracetic acid (PAA) formation within the near-UV/Vis (visible) wavelength region. PAA's absorption spectrum, influenced by its presence in a complex quaternary equilibrium mixture with hydrogen peroxide (H2O2), acetic acid, and water, lacks discernible peaks. This inherent complexity challenges conventional analytical techniques like Beer's law, which rely on absorption intensity as a foundation. To address this challenge, we introduce a novel approach that centers on the analysis of blue shifts in absorption wavelengths, particularly at an absorbance of 0.8 a.u. This method significantly enhances the precision of calibration curves for both diluted PAA and H2O2, unveiling an exponential correlation between wavelength and the logarithm of concentration for both components. Significantly, our approach allows for real-time and accurate measurements, especially during the dynamic PAA formation reaction. Our results exhibit excellent agreement with data obtained from Fourier-transform infrared (FT-IR) spectroscopy, validating the reliability of our method. It's noteworthy that under stable PAA concentration conditions (after 12 h of solution interaction), both traditional absorption method and our approach closely align with the FT-IR method. However, in dynamic scenarios (0-12 h), the absorption method exhibits higher error rates compared to our approach. Additionally, the increased concentration of a catalyst, sulfuric acid (H2SO4), significantly reduces the errors in both methods, a finding that warrants further exploration. In summary, our study not only advances our understanding of PAA and its spectral behavior but also introduces innovative and precise methods for determining PAA concentration in complex solutions. These advancements hold the potential to revolutionize the field of chemical analysis and spectroscopy.
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Affiliation(s)
- Guan-Yu Chen
- Department of Chemistry, National Taiwan Normal University, Taipei, 10617, Taiwan
| | - Yueh-Hsin Lin
- Department of Chemistry, National Taiwan Normal University, Taipei, 10617, Taiwan
| | - Cheng-Hsin Fu
- Department of Chemistry, National Taiwan Normal University, Taipei, 10617, Taiwan
| | - Cheng-Huang Lin
- Department of Chemistry, National Taiwan Normal University, Taipei, 10617, Taiwan.
| | - Balaganesh Muthiah
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Wilfred V Espulgar
- Department of Physics, De La Salle University, 2401 Taft Avenue, Manila, Philippines.
| | - Gil Nonato Santos
- Department of Physics, De La Salle University, 2401 Taft Avenue, Manila, Philippines
| | - Derrick Ethelbhert Yu
- Department of Chemistry, De La Salle University, 2401 Taft Avenue, Manila, Philippines
| | - Toshio Kasai
- Department of Chemistry, Aerosol Science Research Center, National Sun Yat-Sen University, 70 Lien-Hai Rd, Kaohsiung, 80424, Taiwan.
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan.
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14
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Li Z, Li Z, Ma H, Fu S, Liu G, Hao C, Liu Y. Molecular insight into binding behavior of caffeine with lactoferrin: Spectroscopic, molecular docking, and simulation study. J Dairy Sci 2023; 106:8249-8261. [PMID: 37641325 DOI: 10.3168/jds.2023-23631] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/29/2023] [Indexed: 08/31/2023]
Abstract
The majority of bioactive substances in the human diet come from polyphenols. Here, we use spectroscopy, molecular docking, molecular dynamics simulations, and in vitro digestion to look at the relationship between caffeine (CAF) and bovine lactoferrin (BLF). The correlation analysis of the CAF-BLF fluorescence quenching process revealed that the reaction was spontaneous and that the CAF-BLF fluorescence quenching process may have been static. The predominant intrinsic binding forces were hydrogen bonds and van der Waals forces, which were also supported by molecular docking and molecular dynamics simulations. Through Fourier infrared and circular dichroism spectroscopy experiments, it was found that CAF changed the secondary structure of BLF and might bind to the hydrophobic amino acids of BLF. Compared with BLF, CAF-BLF showed inhibitory effects on digestion in simulated in vitro digestion. It will be helpful to better understand the interaction between CAF and BLF and provide the basis for the development of innovative dairy products.
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Affiliation(s)
- Zekun Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, Shaanxi, China
| | - Zhixi Li
- College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, Shaanxi, China
| | - Haorui Ma
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, Shaanxi, China
| | - Shangchen Fu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, Shaanxi, China
| | - Guanxu Liu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, Shaanxi, China
| | - Changchun Hao
- College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, Shaanxi, China.
| | - Yongfeng Liu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, Shaanxi, China.
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15
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Altıntaş Ö, Saylan Y. Exploring the Versatility of Exosomes: A Review on Isolation, Characterization, Detection Methods, and Diverse Applications. Anal Chem 2023; 95:16029-16048. [PMID: 37874907 DOI: 10.1021/acs.analchem.3c02224] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Extracellular vesicles (EVs) are crucial mediators of intercellular communication and can be classified based on their physical properties, biomolecular structure, and origin. Among EVs, exosomes have garnered significant attention due to their potential as therapeutic and diagnostic tools. Exosomes are released via fusion of multivesicular bodies on plasma membranes and can be isolated from various biofluids using methods such as differential ultracentrifugation, immune affinity capture, ultrafiltration, and size exclusion chromatography. Herein, an overview of different techniques for exosome characterization and isolation, as well as the diverse applications of exosome detection, including their potential use in drug delivery and disease diagnosis, is provided. Additionally, we discuss the emerging field of exosome detection by sensors, which offers an up-and-coming avenue for point-of-care diagnostic tools development. Overall, this review aims to provide a exhaustive and up-to-date summary of the current state of exosome research.
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Affiliation(s)
- Özge Altıntaş
- Hacettepe University, Department of Chemistry, 06800 Ankara, Turkey
| | - Yeşeren Saylan
- Hacettepe University, Department of Chemistry, 06800 Ankara, Turkey
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16
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Mashood Ahamed FM, Shakya B, Shakya S. Synthesis and characterization of a novel Mannich base benzimidazole derivative to explore interaction with human serum albumin and antimicrobial property: experimental and theoretical approach. J Biomol Struct Dyn 2023; 41:8701-8714. [PMID: 36284457 DOI: 10.1080/07391102.2022.2136757] [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: 07/29/2022] [Accepted: 10/09/2022] [Indexed: 10/31/2022]
Abstract
The novel Mannich base benzimidazole derivative (CB-1), 1-((1H-benzo[d]imidazol-1-yl)(3-chlorophenyl)methyl)-3-phenylurea) has been designed and synthesized by reacting benzimidazole, 3-chloro benzaldehyde, and N-Phenyl urea. CB-1 has been characterized by UV- Visible, FTIR, and 1H NMR. CB-1 was explored to study the interaction with the most abundant blood protein which involved in the role of transport of molecules (drugs), human serum albumin (HSA). Fluorescence results are evident for the presence of both dynamic and static quenching mechanisms in the binding of CB-1 to HSA. Antimicrobial screening were carried out against three bacteria and three fungi pathogens employing disc diffusion method. Molecular docking using AutoDock Vina tool further confirms the experimental binding interactions obtained from fluorescence. Density functional theory (DFT) with B3LYP/6-311G++ basis set was used for correlating theoretical data and obtaining optimized structures of CB-1 along with reactants with molecular electrostatic potential (MEP) map and HOMO→LUMO energy gap calculation. HIGHLIGHTSThe novel Mannich base benzimidazole derivative (CB-1) has been designed and synthesized by Mannich reaction.CB-1 has been characterized by UV- Visible, FTIR, and 1H NMR.Fluorescence quenching reveals that HSA binds to CB-1 via aromatic residues, which is corroborated by molecular docking.Antifungal and antibacterial activity was evaluated in comparison to Nystatin and Gentamicin standard drugs, respectively.DFT calculations support experimental data and provide HOMO-LUMO energy gap.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- F M Mashood Ahamed
- PG and Research Department of Chemistry, Jamal Mohamed College (Autonomous), Affiliated to Bharathidasan University, Tiruchirappalli, India
| | - Barkha Shakya
- Department of Zoology, Aligarh Muslim University, Aligarh, India
| | - Sonam Shakya
- Department of Chemistry, Aligarh Muslim University, Aligarh, India
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17
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Carmichael-Martins A, Gast TJ, King BJ, Walker BR, Sobczak M, Burns SA. Imaging fine structures of the human trabecular meshwork in vivo using a custom design goniolens and OCT gonioscopy. BIOMEDICAL OPTICS EXPRESS 2023; 14:5267-5281. [PMID: 37854570 PMCID: PMC10581814 DOI: 10.1364/boe.500623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 10/20/2023]
Abstract
The trabecular meshwork (TM), located within the iridocorneal angle, is a target for many glaucoma treatments aimed at controlling intraocular pressure. However, structural variations between individuals are poorly understood. We propose a newly designed gonioscopic lens optimized for high-resolution imaging to image fine structures of the human TM in vivo. The body of the new lens is index-matched to the human cornea and includes a choice of two gonioscopic mirrors (59° and 63°) and matching air-spaced doublets placed on the anterior surface of the goniolens. The new design allows a diffraction-limited image plane at the iridocorneal angle structures. The goniolens design was built and then placed on the subjectś eyes coupled to the cornea with goniogel and a 3D adjustable mount. Images were obtained using a commercially available OCT device (Heidelberg Spectralis). The optical resolution was measured in a model eye as 40.32 and 45.25 cy/mm respectively for each mirror angle. In humans, dense OCT scans with minimum spacing oriented tangential to the iris and ICA were performed on 7 healthy subjects (23-73 yrs). The TM was successfully imaged in all subjects. The custom goniolens improved the contrast of the uveoscleral meshwork structures and corneoscleral meshwork revealing limbus parallel striations, not visible with previous goniolens designs. Transverse OCT images were constructed along the segmentation line, providing an enface image of the TM structures including corneoscleral beams, previously only imaged in vivo using custom adaptive optics systems.
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Affiliation(s)
| | - Thomas J. Gast
- School of Optometry, Indiana University, Bloomington, Indiana 47401, USA
| | - Brett J. King
- School of Optometry, Indiana University, Bloomington, Indiana 47401, USA
| | - Brittany R. Walker
- School of Optometry, Indiana University, Bloomington, Indiana 47401, USA
| | - Marcelina Sobczak
- School of Optometry, Indiana University, Bloomington, Indiana 47401, USA
| | - Stephen A. Burns
- School of Optometry, Indiana University, Bloomington, Indiana 47401, USA
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18
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Obeidat Y, Abu Mousa E, Mushaljy R. Contactless Optical Liquid Identifier. ACS OMEGA 2023; 8:34787-34794. [PMID: 37779995 PMCID: PMC10536836 DOI: 10.1021/acsomega.3c03856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 08/30/2023] [Indexed: 10/03/2023]
Abstract
This paper presents the development of a portable device that can be used for liquid identification using the concept of Beer-Lambert law. The final device can recognize up to 30 different materials in their liquid state and provides some other useful features that can enhance its operation. The user can set a group of 30 liquids according to specific needs and applications. The device can provide the user with some specific settings to start the measurements. The volume of a fluid is identified by a 4 mL sample inserted in the cuvette, then the user can start measuring the concentration of some common solvents like methanol, ethanol, etc. by passing a light of different wavelengths through the sample. The amount of the transferred light is measured using photodetectors and the readings depend on the amount of absorption. The amount of absorption depends on the sample types, colors, contents, and concentrations, so it is used as the main indicator to identify a specific sample.
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Affiliation(s)
- Yusra Obeidat
- Electronics Engineering Department, Yarmouk University, 21163 Irbid, Jordan
| | - Eyas Abu Mousa
- Electronics Engineering Department, Yarmouk University, 21163 Irbid, Jordan
| | - Razan Mushaljy
- Electronics Engineering Department, Yarmouk University, 21163 Irbid, Jordan
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19
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Riaz M, Khalid R, Afzal M, Anjum F, Fatima H, Zia S, Rasool G, Egbuna C, Mtewa AG, Uche CZ, Aslam MA. Phytobioactive compounds as therapeutic agents for human diseases: A review. Food Sci Nutr 2023; 11:2500-2529. [PMID: 37324906 PMCID: PMC10261751 DOI: 10.1002/fsn3.3308] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 06/17/2023] Open
Abstract
Phytobioactive compounds are plant secondary metabolites and bioactive compounds abundantly present in medicinal plants and have remarkable therapeutic potential. Oxidative stress and antibiotic resistance are major causes of present-day ailments such as diabetes, atherosclerosis, cardiovascular disorders, cancer, and inflammation. The data for this review were collected from Google Scholar, PubMed, Directory of Open Access Journals (DOAJ), and Science Direct by using keywords: "Medicinal plants, Phytobioactive compounds, Polyphenols, Alkaloids, Carotenoids etc." Several studies have reported the pharmacological and therapeutic potential of the phytobioactives. Polyphenols, alkaloids, terpenes, and polysaccharides isolated from medicinal plants showed remarkable antioxidant, anticancer, cytotoxic, anti-inflammatory, cardioprotective, hepatoprotective, immunomodulatory, neuroprotective, and antidiabetic activities. This literature review was planned to provide comprehensive insight into the biopharmacological and therapeutic potential of phytobioactive compounds. The techniques used for the extraction and isolation of phytobioactive compounds, and bioassays required for their biological activities such as antioxidant, antimicrobial, anti-inflammatory, and cytotoxic activities, have been discussed. Characterization techniques for the structural elucidation of phytobioactive compounds such as HPLC, TLC, FTIR, GC-MS/MS, and NMR have also been discussed. This review concludes that phytobioactive compounds may be used as potential alternative to synthetic compounds as therapeutic agents for the treatment of various diseases.
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Affiliation(s)
- Muhammad Riaz
- Department of Allied Health SciencesUniversity of SargodhaSargodhaPakistan
| | - Ramsha Khalid
- Department of BiochemistryUniversity of AgricultureFaisalabadPakistan
| | | | - Fozia Anjum
- Department of ChemistryGovernment College UniversityFaisalabadPakistan
| | - Hina Fatima
- Department of BiochemistryUniversity of AgricultureFaisalabadPakistan
- Department of Basic and Applied Chemistry, Faculty of Science and TechnologyUniversity of Central PunjabLahorePakistan
| | - Saadiya Zia
- Department of BiochemistryUniversity of AgricultureFaisalabadPakistan
| | - Ghulam Rasool
- Department of Allied Health SciencesUniversity of SargodhaSargodhaPakistan
| | - Chukwuebuka Egbuna
- Africa Centre of Excellence in Public Health and Toxicological Research (ACE‐PUTOR), Nutritional Biochemistry and Toxicology UnitUniversity of Port‐HarcourtPort HarcourtNigeria
| | - Andrew G. Mtewa
- Chemistry Section, Malawi Institute of TechnologyMalawi University of Science and TechnologyLimbeMalawi
| | - Chukwuemelie Zedech Uche
- Department of Medical Biochemistry and Molecular Biology, Faculty of Basic Medical SciencesUniversity of NigeriaEnuguNigeria
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20
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Wang H, Jiang J, Wan T, Luo Y, Liu G, Li J. A COF-coated ordered porous framework as multifunctional polysulfide barrier towards high-performance lithium-sulfur batteries. J Colloid Interface Sci 2023; 638:542-551. [PMID: 36764247 DOI: 10.1016/j.jcis.2023.01.135] [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: 12/12/2022] [Revised: 01/20/2023] [Accepted: 01/28/2023] [Indexed: 02/04/2023]
Abstract
The practical application of lithium-sulfur batteries (LSBs) is still hindered by the shuttle effect of lithium polysulfides (LiPS) and slow sulfur conversion kinetics. Herein, a LiPS inhibited covalent organic framework (COF)-coated conductive porous metal oxide design strategy is proposed towards the development of efficient and durable sulfur cathode in LSBs. This strategy is demonstrated by coating a TpPa-1 COF layer on cobalt-decorated titanium oxynirtide (TiOxNy) with a three-dimensional ordered microporous framework (3DOM) structure. In this strategy, the oxygen-deficient TiOxNy framework ensures a good conductivity and structural stability of the cathode during the charge/discharge process. The 3DOM macrospores provide a high capacity for sulfur accommodation and exposes active interfaces, whereas the coated TpPa-1 COF featured with ultrafine microspore offer an effective confinement of LiPS within the 3DOM framework, mitigating its shuttling effect. At the same time, the Co embedded in 3DOM TiOxNy servers as efficient catalyst promoting the sulfur electrochemical reaction. Attributed to these structural superiorities, the 3DOM TpPa-1@Co/TiOxNy/S cathode exhibits excellent performance even under high sulfur loading and low electrolyte condition. This work of using microporous COF coating with conductive macroporous metal oxides offers an effective alternative strategy for the design of practical sulfur battery.
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Affiliation(s)
- Hongyu Wang
- Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Jing Jiang
- Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Tongtao Wan
- Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Yuhong Luo
- Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Guihua Liu
- Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Jingde Li
- Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China.
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21
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Singh N, Kumar A, Ghatak A. Studying kinetics of a surface reaction using elastocapillary effect. J Colloid Interface Sci 2023; 645:266-275. [PMID: 37150000 DOI: 10.1016/j.jcis.2023.04.103] [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: 01/14/2023] [Revised: 04/18/2023] [Accepted: 04/21/2023] [Indexed: 05/09/2023]
Abstract
HYPOTHESIS When a liquid is inserted inside a microfluidic channel, embedded within a soft elastomeric layer, e.g. poly(dimethylsiloxane) (PDMS), the thin wall of the channel deforms, due to change in solid-liquid interfacial energy. This phenomenon is known as Elastocapillary effect. The evolution of a new species at this interface too alters the interfacial energy and consequently the extent of deformation. Hence, it should be possible to monitor dynamics of physical and chemical events occurring near to the solid-liquid interface by measuring this deformation by a suitable method, e.g., optical profilometer. EXPERIMENTS Aqueous solution of a metal salt inserted into these channels reacts with Silicon-hydride present in PDMS, yielding metallic nanoparticles at the channel surface. The kinetics of this reaction was captured in real time, by measuring the wall deformation. Similarly, physical adsorption of a protein: Bovine Serum Albumin, on PDMS surface too was monitored. FINDING The rate of change in deformation can be related to rate of these processes to extract the respective reaction rate constant. These results show that Elastocapillary effect can be a viable analytical tool for in-situ monitoring of many physical and chemical processes for which, the reaction site is inaccessible to conventional analytical methods.
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Affiliation(s)
- Nitish Singh
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, 208016, India
| | - Ajeet Kumar
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, 208016, India
| | - Animangsu Ghatak
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, 208016, India; Center for Environmental Science and Engineering, Indian Institute of Technology Kanpur, 208016, India.
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22
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Altammar KA. A review on nanoparticles: characteristics, synthesis, applications, and challenges. Front Microbiol 2023; 14:1155622. [PMID: 37180257 PMCID: PMC10168541 DOI: 10.3389/fmicb.2023.1155622] [Citation(s) in RCA: 47] [Impact Index Per Article: 47.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/21/2023] [Indexed: 05/16/2023] Open
Abstract
The significance of nanoparticles (NPs) in technological advancements is due to their adaptable characteristics and enhanced performance over their parent material. They are frequently synthesized by reducing metal ions into uncharged nanoparticles using hazardous reducing agents. However, there have been several initiatives in recent years to create green technology that uses natural resources instead of dangerous chemicals to produce nanoparticles. In green synthesis, biological methods are used for the synthesis of NPs because biological methods are eco-friendly, clean, safe, cost-effective, uncomplicated, and highly productive. Numerous biological organisms, such as bacteria, actinomycetes, fungi, algae, yeast, and plants, are used for the green synthesis of NPs. Additionally, this paper will discuss nanoparticles, including their types, traits, synthesis methods, applications, and prospects.
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Affiliation(s)
- Khadijah A. Altammar
- Department of Biology, College of Science, University of Hafr Al Batin, Hafr Al-Batin, Saudi Arabia
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23
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Zhang B, Cui Y, Liao B, Tang C, Shu Y. Experimental checking and modeling of the influence of operation conditions on the first order kinetic constants in free water surface wetlands. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 331:117348. [PMID: 36706603 DOI: 10.1016/j.jenvman.2023.117348] [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: 11/18/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
The most commonly used model in constructed wetlands is the first-order removal model, and first order kinetic constants (k) are the key parameters. The presumption is often made that k are constants. However, it is possible that k are functions of operating conditions, but the influence of operation conditions on k is unclear. In this study, response surface methodology was used to explore the variation patterns of ka (area rate constants) and kV (volume rate constants) for the removal of total nitrogen (TN) and total phosphorus (TP) in free water surface (FWS) wetlands. The experimental variables included hydraulic loading rate (HLR), water depth, and inlet concentration (Cin). The results showed that kV was more variable than ka, and the area-based first-order model is more suitable for simulating TN and TP in FWS wetlands. Inlet concentration (Cin) was significant for ka; Cin and water depth were significant for kV; HLR and the interaction between factors were insignificant. The effects of Cin on ka and kV can be described by an upward convex quadratic curve, while the effect of water depth on kV demonstrates a downward convex quadratic curve. The first-order area rate constant for TN removal was given by k = -47.66 + 22.01 Cin - 1.154 Cin2; the first-order area rate constant for TP removal was given by k = -27.75 + 95.88 Cin - 30.73 Cin2. Based on the variation patterns, the traditional k-C model was modified to the kψ-C model. The kψ-C model produced the best results at simulating the outlet concentration and removal efficiency (RE).
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Affiliation(s)
- Bochao Zhang
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China
| | - Yuanlai Cui
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China.
| | - Bin Liao
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China
| | - Chi Tang
- Zhanghe Engineering Management Bureau, Jingmen, 448156, Hubei, China
| | - Yonghong Shu
- State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China
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24
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Szostak R, de Souza Gonçalves A, de Freitas JN, Marchezi PE, de Araújo FL, Tolentino HCN, Toney MF, das Chagas Marques F, Nogueira AF. In Situ and Operando Characterizations of Metal Halide Perovskite and Solar Cells: Insights from Lab-Sized Devices to Upscaling Processes. Chem Rev 2023; 123:3160-3236. [PMID: 36877871 DOI: 10.1021/acs.chemrev.2c00382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
The performance and stability of metal halide perovskite solar cells strongly depend on precursor materials and deposition methods adopted during the perovskite layer preparation. There are often a number of different formation pathways available when preparing perovskite films. Since the precise pathway and intermediary mechanisms affect the resulting properties of the cells, in situ studies have been conducted to unravel the mechanisms involved in the formation and evolution of perovskite phases. These studies contributed to the development of procedures to improve the structural, morphological, and optoelectronic properties of the films and to move beyond spin-coating, with the use of scalable techniques. To explore the performance and degradation of devices, operando studies have been conducted on solar cells subjected to normal operating conditions, or stressed with humidity, high temperatures, and light radiation. This review presents an update of studies conducted in situ using a wide range of structural, imaging, and spectroscopic techniques, involving the formation/degradation of halide perovskites. Operando studies are also addressed, emphasizing the latest degradation results for perovskite solar cells. These works demonstrate the importance of in situ and operando studies to achieve the level of stability required for scale-up and consequent commercial deployment of these cells.
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Affiliation(s)
- Rodrigo Szostak
- Laboratório de Nanotecnologia e Energia Solar (LNES), University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-100 Campinas, SP, Brazil
| | - Agnaldo de Souza Gonçalves
- Laboratório de Nanotecnologia e Energia Solar (LNES), University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
- Gleb Wataghin Institute of Physics, University of Campinas (UNICAMP), 13083-859 Campinas, SP, Brazil
| | - Jilian Nei de Freitas
- Center for Information Technology Renato Archer (CTI), 13069-901 Campinas, SP, Brazil
| | - Paulo E Marchezi
- Laboratório de Nanotecnologia e Energia Solar (LNES), University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
- Department of Engineering and Physics, Karlstad University, 651 88 Karlstad, Sweden
| | - Francineide Lopes de Araújo
- Laboratório de Nanotecnologia e Energia Solar (LNES), University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Hélio Cesar Nogueira Tolentino
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-100 Campinas, SP, Brazil
| | - Michael F Toney
- Department of Chemical & Biological Engineering, and Renewable and Sustainable Energy Institute, University of Colorado, Boulder, Colorado 80309, United States
| | | | - Ana Flavia Nogueira
- Laboratório de Nanotecnologia e Energia Solar (LNES), University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
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25
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Bikku T, Fritz RA, Colón YJ, Herrera F. Machine Learning Identification of Organic Compounds Using Visible Light. J Phys Chem A 2023; 127:2407-2414. [PMID: 36876889 DOI: 10.1021/acs.jpca.2c07955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Identifying chemical compounds is essential in several areas of science and engineering. Laser-based techniques are promising for autonomous compound detection because the optical response of materials encodes enough electronic and vibrational information for remote chemical identification. This has been exploited using the fingerprint region of infrared absorption spectra, which involves a dense set of absorption peaks that are unique to individual molecules, thus facilitating chemical identification. However, optical identification using visible light has not been realized. Using decades of experimental refractive index data in the scientific literature of pure organic compounds and polymers over a broad range of frequencies from the ultraviolet to the far-infrared, we develop a machine learning classifier that can accurately identify organic species based on a single-wavelength dispersive measurement in the visible spectral region, away from absorption resonances. The optical classifier proposed here could be applied to autonomous material identification protocols and applications.
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Affiliation(s)
- Thulasi Bikku
- Department of Physics, Universidad de Santiago de Chile, Av. Victor Jara 3493, Santiago, Chile.,Computer Science and Engineering, Vignan's Nirula Institute of Technology and Science for Women, Guntur, Andhra Pradesh 522009, India
| | - Rubén A Fritz
- Department of Physics, Universidad de Santiago de Chile, Av. Victor Jara 3493, Santiago, Chile
| | - Yamil J Colón
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Felipe Herrera
- Department of Physics, Universidad de Santiago de Chile, Av. Victor Jara 3493, Santiago, Chile.,Millennium Institute for Research in Optics, Esteban Iturra s/n 4070386, Concepción , Chile
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26
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Rodrigues ML, Gomes ADJ, Funez MI, Marques MADS, Lunardi CN. Euphorbia tirucalli latex loaded polymer nanoparticles: Synthesis, characterization, in vitro release and in vivo antinociceptive action. PLoS One 2022; 17:e0274432. [PMID: 36445864 PMCID: PMC9707765 DOI: 10.1371/journal.pone.0274432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 08/28/2022] [Indexed: 12/03/2022] Open
Abstract
The encapsulation of drugs in micro and nanocarriers has helped to resolve mechanisms of cellular resistance and decrease drug side effects as well. In this study, poly(D,L-lactide-co-glycolide) (PLGA) was used to encapsulate the Euphol active substance-containing latex from Euphorbia tirucalli (E-latex). The nanoparticles (NP) were prepared using the solvent evaporation method and the physical and chemical properties were evaluated using spectrophotometric techniques. FTIR was used to prove the formation of the ester bond between the E-latex and PLGA-NP. The UV-Vis spectroscopic technique was used to show that more than 75% of the latex was encapsulated; the same technique was used to determine the release profile of the compound at different pH values, as well as determining the speed with which the process occurs through kinetic models, and it was observed that the best adjustments occurred for the Korsmeyer-Peppas model and the Higuchi model. The DLS technique was used to determine the diameter of the particles produced as well as their zeta potential (ZP). The sizes of the particles varied from 497 to 764 nm, and it was observed that the increase in E-latex concentration causes a reduction in the diameter of the NP and an increase in the ZP (-1.44 to -22.7 mV), due to more functional groups from latex film being adsorbed to the NPs surfaces. The thermogravimetric experiments exhibit the glass transition temperatures (Tg) that is appropriate for the use of formulated NPs as a stable drug delivery device before use. The in vivo activity of E-NPs (30 and 100 mg/Kg/p.o.) was tested against carrageenan-induced mechanical hypernociception. The data demonstrated a significantly antinociceptive effect for E-NPs, suggesting that E-latex nanoencapsulation preserved its desired properties.
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Affiliation(s)
- Marina Lima Rodrigues
- Laboratory of Photochemistry and Nanobiotechnology, University of Brasilia, Campus Ceilandia, Brasília, Federal District, Brazil
- Program in Nanoscience and Nanobiotechnology, University of Brasilia, Brasília, Federal District, Brazil
| | - Anderson de Jesus Gomes
- Laboratory of Photochemistry and Nanobiotechnology, University of Brasilia, Campus Ceilandia, Brasília, Federal District, Brazil
- Program in Nanoscience and Nanobiotechnology, University of Brasilia, Brasília, Federal District, Brazil
- Sciences and Technologies in Health Program, University of Brasilia, Campus Ceilandia, Brasilia, Federal District, Brazil
| | - Mani Indiana Funez
- Sciences and Technologies in Health Program, University of Brasilia, Campus Ceilandia, Brasilia, Federal District, Brazil
| | | | - Claure Nain Lunardi
- Laboratory of Photochemistry and Nanobiotechnology, University of Brasilia, Campus Ceilandia, Brasília, Federal District, Brazil
- Program in Nanoscience and Nanobiotechnology, University of Brasilia, Brasília, Federal District, Brazil
- Sciences and Technologies in Health Program, University of Brasilia, Campus Ceilandia, Brasilia, Federal District, Brazil
- * E-mail:
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27
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Gómez S, Giovannini T, Cappelli C. Multiple Facets of Modeling Electronic Absorption Spectra of Systems in Solution. ACS PHYSICAL CHEMISTRY AU 2022; 3:1-16. [PMID: 36718266 PMCID: PMC9881242 DOI: 10.1021/acsphyschemau.2c00050] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/08/2022] [Accepted: 11/08/2022] [Indexed: 11/24/2022]
Abstract
In this Perspective, we outline the essential physicochemical aspects that need to be considered when building a reliable approach to describe absorption properties of solvated systems. In particular, we focus on how to properly model the complexity of the solvation phenomenon, arising from dynamical aspects and specific, strong solute-solvent interactions. To this end, conformational and configurational sampling techniques, such as Molecular Dynamics, have to be coupled to accurate fully atomistic Quantum Mechanical/Molecular Mechanics (QM/MM) methodologies. By exploiting different illustrative applications, we show that an effective reproduction of experimental spectral signals can be achieved by delicately balancing exhaustive sampling, hydrogen bonding, mutual polarization, and nonelectrostatic effects.
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28
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Sun Y, Li Q, Du X, Thipe V, Vardhanabhuti B, Sengupta S, Katti K, Wan C. Lignin-containing Nanocellulose for in situ Chemical-Free Synthesis of AgAu-based Nanoparticles with Potent Antibacterial Activities. ACS OMEGA 2022; 7:41548-41558. [PMID: 36406527 PMCID: PMC9670259 DOI: 10.1021/acsomega.2c05400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Lignin-containing nanocelluloses (LNCs) have the properties of both lignin and nanocellulose and could overcome the limits of both individual components in metallic nanoparticle synthesis. However, studies on LNCs are still limited, and the potential of such nanomaterials for metallic nanoparticle synthesis has not been fully unraveled. In this study, monometallic silver, gold nanoparticles, and Ag-Au-AgCl nanohybrids were synthesized in situ utilizing LNCs in a chemical-free approach. The parameters, including Ag+ and Au3+ concentrations as well as [Au3+]/[Ag+] ratios, were investigated for their effects on the nanoparticle synthesis. The characterizations, including UV-vis spectrophotometry, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR), confirmed the coexistence of Ag, Au, and AgCl while indicating the key role of lignin and oxygen-containing functional groups in the nanoparticle synthesis. The as-synthesized AgNPs-, AuNPs-, and nanohybrids-LNC samples were tested for their antibacterial activities. In comparison to the monometallic AgNPs-LNC sample, nanohybrids-LNC synthesized with 0.063 mM Au3+ loading showed superior antibacterial activities with minimum inhibitory concentrations (MICs) at 5 μg/mL against Gram-positive Staphylococcus aureus and 10 μg/mL against Gram-negative Salmonella typhimurium with controlled Ag+ release. The results indicated that LNCs can be used to synthesize metallic nanoparticles, and the resultant Ag-Au-AgCl nanohybrids were a potent antibacterial agent with reduced environmental impacts.
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Affiliation(s)
- Yisheng Sun
- Department
of Biomedical, Biological, and Chemical Engineering, University of Missouri, Columbia, Missouri 65211, United States
| | - Qianwei Li
- Department
of Biomedical, Biological, and Chemical Engineering, University of Missouri, Columbia, Missouri 65211, United States
| | - Xiangwei Du
- Veterinary
Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, Missouri 65211, United States
| | - Velaphi Thipe
- Department
of Radiology, University of Missouri, Columbia, Missouri 65211, United States
| | - Bongkosh Vardhanabhuti
- Division
of Food, Nutrition, and Excises Sciences, Columbia, Missouri 65211, United States
| | - Shramik Sengupta
- Department
of Biomedical, Biological, and Chemical Engineering, University of Missouri, Columbia, Missouri 65211, United States
| | - Kattesh Katti
- Department
of Radiology, University of Missouri, Columbia, Missouri 65211, United States
| | - Caixia Wan
- Department
of Biomedical, Biological, and Chemical Engineering, University of Missouri, Columbia, Missouri 65211, United States
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29
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Anthocyanins of Açaí Applied as a Colorimetric Indicator of Milk Spoilage: A Study Using Agar-Agar and Cellulose Acetate as Solid Support to Be Applied in Packaging. POLYSACCHARIDES 2022. [DOI: 10.3390/polysaccharides3040041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Food that is still fit for consumption is wasted in the domestic environment every day, so food packaging technologies are being developed that will monitor the quality of the products in real time. Highly perishable milk is currently one of the products that suffers most from this waste, due to its short shelf life. Active use-by date (AUBD) indicators have been shown to discriminate between fresh and spoiled milk. Colorimetric indicators undergo characteristic changes in their chemical structure, causing abrupt color changes. Among the polymeric materials studied that may function as solid support are cellulose acetate (CA) and agar-agar (AA). The AA colorimetric indicator proved to be more suitable as a solid support due to its ability to maintain the color change properties of the anthocyanin and its high colorimetric performance. The technique was shown to be capable of indicating, in real time, changes in milk quality.
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30
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Oxidation of Styrene to Benzaldehyde Catalyzed by Schiff Base Functionalized Triazolylidene Ni(II) Complexes. Molecules 2022; 27:molecules27154941. [PMID: 35956889 PMCID: PMC9370366 DOI: 10.3390/molecules27154941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/25/2022] [Accepted: 07/01/2022] [Indexed: 11/17/2022] Open
Abstract
Four new Schiff base functionalized 1,2,3-triazolylidene nickel complexes, [Ni-(L1NHC)2](PF6)2; 3, [Ni-(L2NHC)2](PF6)2; 4, [Ni-(L3NHC)](PF6)2; 7 and [Ni-(L4NHC)](PF6)2; 8, (where L1NHC = (E)-3-methyl-1-propyl-4-(2-(((2-(pyridin-2-yl)ethyl)imino)methyl)phenyl)-1H-1,2,3-triazol-3-ium hexafluorophosphate(V), 1, L2NHC = (E)-3-methyl-4-(2-((phenethylimino)methyl)phenyl)-1-propyl-1H-1,2,3-triazol-3-ium hexafluorophosphate(V), 2, L3NHC = 4,4′-(((1E)-(ethane-1,2-diylbis(azanylylidene))bis(methanylylidene))bis(2,1-phenylene))bis(3-methyl-1-propyl-1H-1,2,3-triazol-3-ium) hexafluorophosphate(V), 5, and L4NHC = 4,4′-(((1E)-(butane-1,4-diylbis(azanylylidene))bis(methanylylidene))bis(2,1-phenylene))bis(3-methyl-1-propyl-1H-1,2,3-triazol-3-ium) hexafluorophosphate(V), 6), were synthesised and characterised by a variety of spectroscopic methods. Square planar geometry was proposed for all the nickel complexes. The catalytic potential of the complexes was explored in the oxidation of styrene to benzaldehyde, using hydrogen peroxide as a green oxidant in the presence of acetonitrile at 80 °C. All complexes showed good catalytic activity with high selectivity to benzaldehyde. Complex 3 gave a conversion of 88% and a selectivity of 70% to benzaldehyde in 6 h. However, complexes 4 and 7–8 gave lower conversions of 48–74% but with higher (up to 90%) selectivity to benzaldehyde. Results from kinetics studies determined the activation energy for the catalytic oxidation reaction as 65 ± 3 kJ/mol, first order in catalyst and fractional order in the oxidant. Results from UV-visible and CV studies of the catalytic activity of the Ni-triazolylidene complexes on styrene oxidation did not indicate any clear possibility of generation of a Ni(II) to Ni(III) catalytic cycle.
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31
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Microbial Mediated Synthesis of Zinc Oxide Nanoparticles, Characterization and Multifaceted Applications. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02406-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractNanoparticles have gained considerable importance compared to bulk counterparts due to their unique properties. Due to their high surface to volume ratio and high reactivity, metallic and metal-oxide nanostructures have shown great potential applications. Among them, zinc oxide nanoparticles (ZnONPs) have gained tremendous attention attributed to their unique properties such as low toxicity, biocompatibility, simplicity, easy fabrication, and environmental friendly. Remarkably, ZnONPs exhibit optical, physical, antimicrobial, anticancer, anti-inflammatory and wound healing properties. These nanoparticles have been applied in various fields such as in biomedicine, biosensors, electronics, food, cosmetic industries, textile, agriculture and environment. The synthesis of ZnONPs can be performed by chemical, physical and biological methods. Although the chemical and physical methods suffer from some disadvantages such as the involvement of high temperature and pressure conditions, high cost and not environmentally friendly, the green synthesis of ZnONPs offers a promising substitute to these conventional methods. On that account, the microbial mediated synthesis of ZnONPs is clean, eco-friendly, nontoxic and biocompatible method. This paper reviews the microbial synthesis of ZnONPs, parameters used for the optimization process and their physicochemical properties. The potential applications of ZnONPs in biomedical, agricultural and environmental fields as well as their toxic aspects on human beings and animals have been reviewed.
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32
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Zhang G, Cao Y, Mei S, Guo Y, Gong S, Chu Q, Chen P. Another perspective to explain green tea cream: utilizing engineered catechin-caffeine complex. Food Res Int 2022; 158:111542. [DOI: 10.1016/j.foodres.2022.111542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/03/2022] [Accepted: 06/18/2022] [Indexed: 11/24/2022]
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33
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Gómez S, Rojas-Valencia N, Giovannini T, Restrepo A, Cappelli C. Ring Vibrations to Sense Anionic Ibuprofen in Aqueous Solution as Revealed by Resonance Raman. Molecules 2022; 27:molecules27020442. [PMID: 35056755 PMCID: PMC8780161 DOI: 10.3390/molecules27020442] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/31/2021] [Accepted: 01/04/2022] [Indexed: 12/07/2022] Open
Abstract
We unravel the potentialities of resonance Raman spectroscopy to detect ibuprofen in diluted aqueous solutions. In particular, we exploit a fully polarizable quantum mechanics/molecular mechanics (QM/MM) methodology based on fluctuating charges coupled to molecular dynamics (MD) in order to take into account the dynamical aspects of the solvation phenomenon. Our findings, which are discussed in light of a natural bond orbital (NBO) analysis, reveal that a selective enhancement of the Raman signal due to the normal mode associated with the C-C stretching in the ring, νC=C, can be achieved by properly tuning the incident wavelength, thus facilitating the recognition of ibuprofen in water samples.
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Affiliation(s)
- Sara Gómez
- Classe di Scienze, Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy;
- Correspondence: (S.G.); (C.C.)
| | - Natalia Rojas-Valencia
- Instituto de Química, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellin 050010, Colombia; (N.R.-V.); (A.R.)
| | - Tommaso Giovannini
- Classe di Scienze, Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy;
| | - Albeiro Restrepo
- Instituto de Química, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellin 050010, Colombia; (N.R.-V.); (A.R.)
| | - Chiara Cappelli
- Classe di Scienze, Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy;
- Correspondence: (S.G.); (C.C.)
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34
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Iglesias‐Juez A, Chiarello GL, Patience GS, Guerrero‐Pérez MO. Experimental methods in chemical engineering:
X
‐ray absorption spectroscopy—
XAS
,
XANES
,
EXAFS. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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35
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Abdolkarimi-Mahabadi M, Bayat A, Mohammadi A. Use of UV-Vis Spectrophotometry for Characterization of Carbon Nanostructures: a Review. THEOR EXP CHEM+ 2021. [DOI: 10.1007/s11237-021-09687-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Cheung PC, Williams DR, Barrett J, Barker J, Kirk DW. On the Origins of Some Spectroscopic Properties of "Purple Iron" (the Tetraoxoferrate(VI) Ion) and Its Pourbaix Safe-Space. Molecules 2021; 26:molecules26175266. [PMID: 34500697 PMCID: PMC8434183 DOI: 10.3390/molecules26175266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 07/13/2021] [Accepted: 08/16/2021] [Indexed: 11/24/2022] Open
Abstract
In this work, the authors attempt to interpret the visible, infrared and Raman spectra of ferrate(VI) by means of theoretical physical-inorganic chemistry and historical highlights in this field of interest. In addition, the sacrificial decomposition of ferrate(VI) during water treatment will also be discussed together with a brief mention of how Rayleigh scattering caused by the decomposition of FeVIO42− may render absorbance readings erroneous. This work is not a compendium of all the instrumental methods of analysis which have been deployed to identify ferrate(VI) or to study its plethora of reactions, but mention will be made of the relevant techniques (e.g., Mössbauer Spectroscopy amongst others) which support and advance this overall discourse at appropriate junctures, without undue elaboration on the foundational physics of these techniques.
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Affiliation(s)
- Philip C.W. Cheung
- Department of Chemical Engineering, Imperial College, London SW7 2AZ, UK;
- Correspondence:
| | - Daryl R. Williams
- Department of Chemical Engineering, Imperial College, London SW7 2AZ, UK;
| | - Jack Barrett
- Department of Chemistry, King’s College, University of London, London WC2R 2LS, UK;
| | - James Barker
- School of Life Sciences, Pharmacy and Chemistry, Kingston University, Kingston-upon-Thames KT1 2EE, UK;
| | - Donald W. Kirk
- Department of Chemical Engineering & Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada;
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Malik M, Chan KH, Azimi G. Quantification of nickel, cobalt, and manganese concentration using ultraviolet-visible spectroscopy. RSC Adv 2021; 11:28014-28028. [PMID: 35480763 PMCID: PMC9038011 DOI: 10.1039/d1ra03962h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 08/10/2021] [Indexed: 11/21/2022] Open
Abstract
Ultraviolet-visible spectroscopy is one of the most effective, inexpensive, flexible, and simplest analytical techniques to measure species concentration in the liquid phase. It has a wide range of applications such as wastewater treatment, dye degradation, colloidal nanoparticle characterization. It is used in almost every spectroscopy laboratory for routine analysis or research. In the present study, a feasibility study was carried out to find the application of UV-Vis spectroscopy for onsite measurement of nickel, cobalt, manganese, and lithium as a replacement for the conventional method to measure the concentrations of these elements in battery and other applicable industries. Samples with different concentrations of individual elements and composites were prepared and analyzed using an ultraviolet-visible spectrometer. Based on the obtained results, mathematical relationships between concentration and absorbance were defined. The calculated concentration of different elements using the developed relationships was compared with the measured concentration using ICP-OES to find any deviation between the two. The effect of various parameters such as concentration, path length, number of elements in the solution, density, and pH was analyzed to verify the feasibility. The obtained results show that this technique can be effectively used to measure the concentration of nickel and cobalt with high accuracy.
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Affiliation(s)
- Monu Malik
- Department of Chemical Engineering and Applied Chemistry, University of Toronto 200 College Street Toronto Ontario M5S 3E5 Canada
| | - Ka Ho Chan
- Department of Chemical Engineering and Applied Chemistry, University of Toronto 200 College Street Toronto Ontario M5S 3E5 Canada
| | - Gisele Azimi
- Department of Chemical Engineering and Applied Chemistry, University of Toronto 200 College Street Toronto Ontario M5S 3E5 Canada .,Department of Materials Science and Engineering, University of Toronto 184 College Street Toronto Ontario M5S 3E4 Canada
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Schieppati D, Patience NA, Campisi S, Patience GS. Experimental methods in chemical engineering: High performance liquid chromatography—HPLC. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Dalma Schieppati
- Chemical Engineering, Polytechnique Montréal Montréal Québec Canada
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A dense graphene monolith with poloxamer prefunctionalization enabling aqueous redispersion to obtain solubilized graphene sheets. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.01.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Cheng F, Yang C, Zhou C, Lan L, Zhu H, Li Y. Simultaneous Determination of Metal Ions in Zinc Sulfate Solution Using UV-Vis Spectrometry and SPSE-XGBoost Method. SENSORS 2020; 20:s20174936. [PMID: 32878223 PMCID: PMC7506957 DOI: 10.3390/s20174936] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/22/2020] [Accepted: 08/25/2020] [Indexed: 11/16/2022]
Abstract
Excessive discharge of heavy metal ions will aggravate environment pollution and threaten human health. Thus, it is of significance to real-time detect metal ions and control discharge in the metallurgical wastewater. We developed an accurate and rapid approach based on the singular perturbation spectrum estimator and extreme gradient boosting (SPSE-XGBoost) algorithms to simultaneously determine multi-metal ion concentrations by UV–vis spectrometry. In the approach, the spectral data is expanded by multi-order derivative preprocessing, and then, the sensitive feature bands in each spectrum are extracted by feature importance (VI score) ranking. Subsequently, the SPSE-XGBoost model are trained to combine multi-derivative features and to predict ion concentrations. The experimental results indicate that the developed “Expand-Extract-Combine” strategy can not only overcome problems of background noise and spectral overlapping but also mine the deeper spectrum information by integrating important features. Moreover, the SPSE-XGBoost strategy utilizes the selected feature subset instead of the full-spectrum for calculation, which effectively improves the computing speed. The comparisons of different data processing methods are conducted. It outcomes that the proposed strategy outperforms other routine methods and can profoundly determine the concentrations of zinc, copper, cobalt, and nickel with the lowest RMSEP. Therefore, our developed approach can be implemented as a promising mean for real-time and on-line determination of multi-metal ion concentrations in zinc hydrometallurgy.
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Affiliation(s)
- Fei Cheng
- School of Automation, Central South University, Changsha 410083, China; (F.C.); (C.Y.); (L.L.); (H.Z.); (Y.L.)
| | - Chunhua Yang
- School of Automation, Central South University, Changsha 410083, China; (F.C.); (C.Y.); (L.L.); (H.Z.); (Y.L.)
| | - Can Zhou
- School of Automation, Central South University, Changsha 410083, China; (F.C.); (C.Y.); (L.L.); (H.Z.); (Y.L.)
- State Key Laboratory of High Performance Complex Manufacturing, Changsha 410083, China
- Correspondence: ; Tel.: +86-731-8883-0700
| | - Lijuan Lan
- School of Automation, Central South University, Changsha 410083, China; (F.C.); (C.Y.); (L.L.); (H.Z.); (Y.L.)
| | - Hongqiu Zhu
- School of Automation, Central South University, Changsha 410083, China; (F.C.); (C.Y.); (L.L.); (H.Z.); (Y.L.)
| | - Yonggang Li
- School of Automation, Central South University, Changsha 410083, China; (F.C.); (C.Y.); (L.L.); (H.Z.); (Y.L.)
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Guerrero‐Pérez MO, Patience GS. Experimental methods in chemical engineering: Fourier transform infrared spectroscopy—FTIR. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23664] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Synthesis of Fe3O4@SiO2-PHEMA via redox of H2O2 and Fe2+ for efficient removal of Cu2+ from aqueous solution. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Gomes AJ, Lunardi CN, Rocha FS, Patience GS. Experimental methods in chemical engineering: Fluorescence emission spectroscopy. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23506] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Anderson J. Gomes
- Laboratory of Photochemistry and NanobiotechnologyUniversity of BrasíliaBrasília Brazil
| | - Claure N. Lunardi
- Laboratory of Photochemistry and NanobiotechnologyUniversity of BrasíliaBrasília Brazil
| | - Fellipy S. Rocha
- Laboratory of Photochemistry and NanobiotechnologyUniversity of BrasíliaBrasília Brazil
- Department of Chemical EngineeringPolytechnique MontréalQC Canada
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Issue Highlights. CAN J CHEM ENG 2018. [DOI: 10.1002/cjce.22993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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