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Tanifuji Y, Suzuki H, Tong G, Hiruta Y, Citterio D. Basic evaluation of the CRISPR/Cas system stability for application to paper-based analytical devices. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:4143-4149. [PMID: 38864392 DOI: 10.1039/d4ay00848k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Despite the promising features of the CRISPR/Cas system for application to point-of-care nucleic acid tests, there are only a few reports on its integration into paper-based analytical devices (PADs) for the purpose of assay simplification. In most cases, paper platforms have only been used for the final signal readout in an assay otherwise performed in a test tube. Therefore, there is very limited information on the suitability of the CRISPR/Cas system for on-device reagent storage. To fill this gap, the current work primarily investigated the influence of various factors, including the type of paper, reagent drying method, effect of stabilizers, and storage condition on the storage stability of reagents necessary for CRISPR-based assays on paper substrates, by comparing the fluorescence signal emitted by the trans-cleavage of the dsDNA-activated Cas12a complex. The results obtained in the form of fluorescence signals emitted after trans-cleavage of a ssDNA probe through a dsDNA-activated Cas12a complex on paper substrates showed that CRISPR-related reagents spontaneously dried at room temperature on BSA blocked paper retained over 70% of their initial activity when stored at -20 °C for 28 days, independent of the type of paper substrates, which was improved by the addition of sucrose as a stabilizer. In addition, reagents dried on paper substrates under the optimized conditions exhibited stronger heat tolerance at temperatures above 65 °C compared to their corresponding solutions. This work is expected to contribute to the future development of fully integrated PADs relying on CRISPR/Cas systems for point-of-care applications requiring no additional reagent handling.
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Affiliation(s)
- Yohei Tanifuji
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.
| | - Hikaru Suzuki
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.
| | - Guodong Tong
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.
| | - Yuki Hiruta
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.
| | - Daniel Citterio
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.
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2
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Hussain CM, Hussain CG, Keçili R. White analytical chemistry approaches for analytical and bioanalytical techniques: Applications and challenges. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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3
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Song Y, Wang X, Jia R, Liu N, Zhao Q, Pan Z, Zhang T, Sun S. Determination of pesticides and their degradation products in sediment samples by accelerated solvent extraction and solid-phase extraction with high-performance liquid chromatography-high-resolution mass spectrometry. ANAL SCI 2022; 38:1339-1346. [PMID: 35882771 DOI: 10.1007/s44211-022-00165-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 07/07/2022] [Indexed: 11/01/2022]
Abstract
A new sensitive and selective methods was developed to quantify different types of pesticides and their degradation products in sediment. The method developed was optimized and modified based on the accelerated solvent extraction, followed by the solid-phase extraction clean-up technique. High-performance liquid chromatography coupled with mass spectrometry was used for analysis. The influence of various parameters on the extraction process was investigated, including the extraction temperature, extraction solvent, purification column and purification solvent, etc. Under the optimal conditions, the relative recoveries of the pesticides and their degradation products ranged from 80 to 106% for spiked blank sediment and environmental sediment samples with relative standard deviations of 1-9%. The method displayed low method detection limits for both sediment matrices and achieved good linearity over the tested range of concentrations. The physical and chemical properties of sediment showed that high content of sediment water content and humic acid would affect the extraction efficiency of sample pretreatment. The method was applied to environmental sediment to quantify pesticide residues in the samples. Based on the instrument and method performance validation results, the developed methods can be applied in environmental pesticide residue analysis, thus providing a scientific method for the detection of sediment samples.
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Affiliation(s)
- Yan Song
- Shandong Province City Water Supply and Drainage Water Quality Monitoring Center, Jinan, 250013, Shandong, People's Republic of China
| | - Xin Wang
- Shandong Province City Water Supply and Drainage Water Quality Monitoring Center, Jinan, 250013, Shandong, People's Republic of China.,School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, Shandong, People's Republic of China
| | - Ruibao Jia
- Shandong Province City Water Supply and Drainage Water Quality Monitoring Center, Jinan, 250013, Shandong, People's Republic of China.
| | - Na Liu
- Shandong Province City Water Supply and Drainage Water Quality Monitoring Center, Jinan, 250013, Shandong, People's Republic of China
| | - Qinghua Zhao
- Shandong Province City Water Supply and Drainage Water Quality Monitoring Center, Jinan, 250013, Shandong, People's Republic of China
| | - Zhangbin Pan
- Shandong Province City Water Supply and Drainage Water Quality Monitoring Center, Jinan, 250013, Shandong, People's Republic of China
| | - Tianxu Zhang
- Shandong Province City Water Supply and Drainage Water Quality Monitoring Center, Jinan, 250013, Shandong, People's Republic of China.,School of Water Conservancy and Environment, University of Jinan, Jinan, 250022, Shandong, People's Republic of China
| | - Shaohua Sun
- Shandong Province City Water Supply and Drainage Water Quality Monitoring Center, Jinan, 250013, Shandong, People's Republic of China.
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Yang K, Sun W, Li Q, Wang J, Yao J, Wang X. Ellman's method-based determination of acibenzolar-S-methyl in tobacco by transesterification with methanol and SABP2-catalyzed hydrolysis. ANAL SCI 2022; 38:749-757. [PMID: 35298794 DOI: 10.1007/s44211-022-00091-w] [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: 10/19/2021] [Accepted: 01/18/2022] [Indexed: 11/01/2022]
Abstract
Acibenzolar-S-methyl (ASM) is the most commercially successful biological antibacterial agent used for crop through systemic acquired resistance (SAR). In this study, a reproducible and accurate procedure, based on the spectrophotometric/microplate reader analysis, has been developed to detect ASM in tobacco leaves. This method involves oxidation of methyl mercaptan by the Ellman's reagent 5,5'-dithio-bis (2-nitrobenzoic acid) (DTNB) to form the yellow derivative 5'-thio-2-nitrobenzoic acid (TNB2-), measurable at 412 nm. Methyl mercaptan can be produced by either the ASM transesterification with methanol or the SA-binding protein 2 (SABP2)-catalyzed ASM hydrolysis. The proportions of methanol, reaction time, temperature, the concentrations of EDTA and DTNB were optimized in a 96-well plate. The calibration curve of ASM was linear over the range of 25.2-315 μg g-1. The results of the intra- and inter-day accuracy and precision data were within the FDA acceptance criteria. With ASM as substrate, the turnover number of SABP2 was determined, with the kcat value of 31.1 min-1 using the Michaelis-Menten equation. In tobacco plants treated with 100 μM ASM, it was decreased as time elapsed in treated tobacco, reaching negligible values 72 h after treatment. The optimized method was applied for the determination of ASM transesterification with methanol and the kinetic data determination of SABP2-catalyzed ASM hydrolysis.
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Affiliation(s)
- Kang Yang
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, People's Republic of China
| | - Wenyu Sun
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, People's Republic of China
| | - Qiang Li
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, People's Republic of China
| | - Jingfeng Wang
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, People's Republic of China
| | - Jianzhuang Yao
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, People's Republic of China.
| | - Xia Wang
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, People's Republic of China.
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Development of a one-step analysis method for several amino acids using a microfluidic paper-based analytical device. Sci Rep 2022; 12:3427. [PMID: 35236904 PMCID: PMC8891284 DOI: 10.1038/s41598-022-07408-9] [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: 11/29/2021] [Accepted: 02/18/2022] [Indexed: 11/08/2022] Open
Abstract
A one-step analysis method was developed for four types of amino acids using a microfluidic paper-based analytical device fabricated from chromatography filtration paper and laminate films. Aminoacyl-tRNA synthetase was used to detect each amino acid. The obtained laminated paper-based analytical device (LPAD) contained four enzymatic reaction areas. Colorimetric detection was performed based on the molybdenum blue reaction. A model method for the simple, easy, and simultaneous detection of several amino acid concentrations was suggested, in contrast to the conventional methods such as HPLC or LC-MS. The method provided a selective quantification at the ranges of 3.6-100 μM for tryptophan, 10.1-100 μM for glycine, 5.9-100 μM for histidine and 5.6-100 μM for lysine with a detection limit of 1.1 μM, 3.3 μM, 1.9 μM and 1.8 μM, respectively. LPAD fabrication was considerably simple, and the subsequent detection process was easy and required a short period of time (within 15 min).
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6
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Bhattu M, Verma M, Kathuria D. Recent advancements in the detection of organophosphate pesticides: a review. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4390-4428. [PMID: 34486591 DOI: 10.1039/d1ay01186c] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Organophosphorus pesticides (OPPs) are generally utilized for the protection of crops from pests. Because the use of OPPs in various agricultural operations has expanded dramatically, precise monitoring of their concentration levels has become the critical issue, which will help in the protection of ecological systems and food supply. However, the World Health Organization (WHO) has classified them as extremely dangerous chemical compounds. Taking their immense use and toxicity into consideration, the development of easy, rapid and highly sensitive techniques is necessary. Despite the fact that there are numerous conventional ways for detecting OPPs, the development of portable sensors is required to make routine analysis considerably more convenient. Some of these advanced techniques include colorimetric sensors, fluorescence sensors, molecular imprinted polymer-based sensors, and surface plasmon resonance-based sensors. This review article specifically focuses on the colorimetric, fluorescence and electrochemical sensors. In this article, the sensing strategies of these developed sensors, analytical conditions and their respective limit of detection are compiled.
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Affiliation(s)
- Monika Bhattu
- Department of Chemistry, University Centre for Research and Development, Chandigarh University, Gharuan, Punjab 140413, India.
| | - Meenakshi Verma
- Department of Chemistry, University Centre for Research and Development, Chandigarh University, Gharuan, Punjab 140413, India.
| | - Deepika Kathuria
- Department of Chemistry, University Centre for Research and Development, Chandigarh University, Gharuan, Punjab 140413, India.
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Yamaguchi A, Miyaguchi H, Ishida A, Tokeshi M. Paper-Based Analytical Device for the On-Site Detection of Nerve Agents. ACS APPLIED BIO MATERIALS 2021; 4:6512-6518. [PMID: 35006863 DOI: 10.1021/acsabm.1c00655] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a colorimetric paper-based microfluidic device based on an enzyme inhibition assay that allows the on-site detection of nerve agents by sampling and wicking. The sample and reagents are automatically transported through the channel where an enzyme inhibition reaction is conducted, followed by an enzyme-substrate reaction and a color reaction. This device can detect 0.1 μg/mL of the nerve agent VX in a 2.5 μL drop and is nerve agent selective and robust against temperature, pH, and several liquids. We confirmed that sampling procedures (dilution and wiping) are applicable to this device. Furthermore, the fabrication procedure is easy, and the cost is at most a few tens of cents. Thus, the present device provides a practical method for the urgent detection of nerve agents in suspected chemical terrorism incidents.
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Affiliation(s)
- Akinori Yamaguchi
- National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa 277-0882, Japan.,Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Hajime Miyaguchi
- National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa 277-0882, Japan
| | - Akihiko Ishida
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Manabu Tokeshi
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan.,Innovative Research Centre for Preventive Medical Engineering, Nagoya University, Furo-cho Chikusa-ku, Nagoya 464-8601, Japan.,Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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8
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Muhammed A, Hussen A, Redi M, Kaneta T. Remote Investigation of Total Chromium Determination in Environmental Samples of the Kombolcha Industrial Zone, Ethiopia, Using Microfluidic Paper-based Analytical Devices. ANAL SCI 2021; 37:585-592. [PMID: 33041309 DOI: 10.2116/analsci.20p325] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Microfluidic paper-based analytical devices (μ-PADs) fabricated in Japan were employed for the determination of total chromium (Cr) in water, soil, and lettuce irrigated with wastewater in Ethiopia. The μ-PADs, which were printed by wax printing in Japan, were transported to Ethiopia and prepared for the determination of total Cr by adding appropriate reagents to the pretreatment and detection zones. Soil and lettuce samples were determined by the μ-PADs and a UV-Vis spectrophotometer in Ethiopia. A paired t-test showed that the mean total Cr concentrations determined in the soil and lettuce samples were not significantly different between μ-PADs and UV-Vis spectrophotometric analysis at the 5% level of significance. This implies that the μ-PADs have good accuracy and reliability, and could be employed to monitor Cr in environmental samples. We found that the total Cr concentrations in all soil and lettuce samples were above the permissible limit. Moreover, evaluating Cr contamination level using the geo-accumulation index indicated that the soils were contaminated with Cr moderately to heavily. Thus, the present work successfully demonstrated the potential of remote investigations of pollution in a less-equipped laboratory by transporting the μ-PADs fabricated in another laboratory.
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Affiliation(s)
- Abdellah Muhammed
- Center for Environmental Science, College of Natural and Computational Sciences, Addis Ababa University
| | - Ahmed Hussen
- Center for Environmental Science, College of Natural and Computational Sciences, Addis Ababa University
| | - Mesfin Redi
- Department of Chemistry, College of Natural and Computational Sciences, Addis Ababa University
| | - Takashi Kaneta
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University
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9
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Nadar SS, Patil PD, Tiwari MS, Ahirrao DJ. Enzyme embedded microfluidic paper-based analytic device (μPAD): a comprehensive review. Crit Rev Biotechnol 2021; 41:1046-1080. [PMID: 33730940 DOI: 10.1080/07388551.2021.1898327] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Low-cost paper-based analytical devices are the latest generation of portable lab-on-chip designs that offers an innovative platform for the on/off-site analysis (biosensing) of target analytes, especially in rural and remote areas. Recently, microfluidic paper-based analytical devices (μPADs) have attained significant recognition owing to their exciting fundamental features such as: ease of fabrication, rapid operation, and precise interpretations. The incorporation of enzymes with paper-based analytical devices significantly improves analytical performance while exhibiting excellent chemical and storage stability. In addition to that, these devices are highly compact, portable, easy-to-use, and do not require any additional sophisticated equipment for the detection and quantification of target analytes. This review provides a holistic insight into design, fabrication, and enzyme immobilization strategies for the development of enzyme-μPADs, which enables them to be widely implemented for in-field analysis. It also highlights the recent application of enzyme-μPADs in the area of: biomedical, food safety, and environmental monitoring while exploring the mechanisms of detection involved. Further, in order to improve the accuracy of analysis, researchers have designed a smartphone-based scanning tool for multi-variant point-of-care devices, which is summarized in the latter part of the review. Finally, the future perspectives and outlook of major challenges associated with enzyme-μPADs are discussed with their possible solutions. The development of enzyme integrated μPADs will open a new avenue as an exceptional analytical tool to explore various applications.HIGHLIGHTSEnzyme embedded paper-based analytical devices are a revolution in the field of biosensing.The design, fabrication, and enzyme immobilization on μPADs have been comprehensively discussed.The application of enzyme-μPADs food safety, environmental monitoring, and clinical diagnostic have been reviewed.Smartphones can be used as an on-site, user-friendly, and compact next-gen scanning tool for biosensing.
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Affiliation(s)
- Shamraja S Nadar
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, India
| | - Pravin D Patil
- Department of Basic Science and Humanities, Mukesh Patel School of Technology Management and Engineering, SVKM's NMIMS University, Mumbai, India
| | - Manishkumar S Tiwari
- Department of Chemical Engineering, Mukesh Patel School of Technology Management and Engineering, SVKM's NMIMS University, Mumbai, India
| | - Dinesh J Ahirrao
- Department of Physics, Institute of Chemical Technology, Mumbai, India
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Pena-Pereira F, Bendicho C, Pavlović DM, Martín-Esteban A, Díaz-Álvarez M, Pan Y, Cooper J, Yang Z, Safarik I, Pospiskova K, Segundo MA, Psillakis E. Miniaturized analytical methods for determination of environmental contaminants of emerging concern - A review. Anal Chim Acta 2020; 1158:238108. [PMID: 33863416 DOI: 10.1016/j.aca.2020.11.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 01/09/2023]
Abstract
The determination of contaminants of emerging concern (CECs) in environmental samples has become a challenging and critical issue. The present work focuses on miniaturized analytical strategies reported in the literature for the determination of CECs. The first part of the review provides brief overview of CECs whose monitoring in environmental samples is of particular significance, namely personal care products, pharmaceuticals, endocrine disruptors, UV-filters, newly registered pesticides, illicit drugs, disinfection by-products, surfactants, high technology rare earth elements, and engineered nanomaterials. Besides, an overview of downsized sample preparation approaches reported in the literature for the determination of CECs in environmental samples is provided. Particularly, analytical methodologies involving microextraction approaches used for the enrichment of CECs are discussed. Both solid phase- and liquid phase-based microextraction techniques are highlighted devoting special attention to recently reported approaches. Special emphasis is placed on newly developed materials used for extraction purposes in microextraction techniques. In addition, recent contributions involving miniaturized analytical flow techniques for the determination of CECs are discussed. Besides, the strengths, weaknesses, opportunities and threats of point of need and portable devices have been identified and critically compared with chromatographic methods coupled to mass chromatography. Finally, challenging aspects regarding miniaturized analytical methods for determination of CECs are critically discussed.
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Affiliation(s)
- Francisco Pena-Pereira
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e Alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain.
| | - Carlos Bendicho
- Centro de Investigación Mariña, Universidade de Vigo, Departamento de Química Analítica e Alimentaria, Grupo QA2, Edificio CC Experimentais, Campus de Vigo, As Lagoas, Marcosende, 36310, Vigo, Spain.
| | - Dragana Mutavdžić Pavlović
- Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev Trg 19, Zagreb, 10000, Croatia
| | - Antonio Martín-Esteban
- Departamento de Medio Ambiente y Agronomía, INIA, Carretera de A Coruña Km 7.5, Madrid, E-28040, Spain
| | - Myriam Díaz-Álvarez
- Departamento de Medio Ambiente y Agronomía, INIA, Carretera de A Coruña Km 7.5, Madrid, E-28040, Spain
| | - Yuwei Pan
- Cranfield Water Science Institute, Cranfield University, Cranfield, MK43 0AL, United Kingdom; School of Engineering, University of Glasgow, G12 8LT, United Kingdom
| | - Jon Cooper
- School of Engineering, University of Glasgow, G12 8LT, United Kingdom
| | - Zhugen Yang
- Cranfield Water Science Institute, Cranfield University, Cranfield, MK43 0AL, United Kingdom
| | - Ivo Safarik
- Department of Nanobiotechnology, Biology Centre, ISB, CAS, Na Sadkach 7, 370 05, Ceske Budejovice, Czech Republic; Regional Centre of Advanced Technologies and Materials, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czech Republic; Department of Magnetism, Institute of Experimental Physics, SAS, Watsonova 47, 040 01, Kosice, Slovakia
| | - Kristyna Pospiskova
- Department of Nanobiotechnology, Biology Centre, ISB, CAS, Na Sadkach 7, 370 05, Ceske Budejovice, Czech Republic; Regional Centre of Advanced Technologies and Materials, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czech Republic
| | - Marcela A Segundo
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, R Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Elefteria Psillakis
- Laboratory of Aquatic Chemistry, School of Environmental Engineering, Polytechnioupolis, Technical University of Crete, GR-73100, Chania, Crete, Greece
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Microfluidic Paper-Based Analytical Device for Histidine Determination. Appl Biochem Biotechnol 2020; 192:812-821. [PMID: 32592084 DOI: 10.1007/s12010-020-03365-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 06/22/2020] [Indexed: 10/24/2022]
Abstract
A laminated paper-based analytical device (LPAD) for histidine detection was fabricated from a chromatography filtration paper and laminate films. Histidine recognition was effected by histidyl-tRNA synthetase (HisRS), and its detection was signaled colorimetrically based on the molybdenum blue reaction. The analytical conditions and detectable concentration range of histidine were examined. The method provided selective quantification from 1 to 100 μM histidine. LPAD fabrication is considerably simple, involving only the craft-cutting of the chromatography filtration paper and laminate film, and is cost-effective.
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12
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Affiliation(s)
- Tadaharu Ueda
- Department of Marine Resources Science, Faculty of Agriculture and Marine Science, Kochi University.,Center for Advanced Marine Core Research, Kochi University
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13
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Fernández-Ramos MD, Ogunneye AL, Babarinde NAA, Erenas MM, Capitán-Vallvey LF. Bioactive microfluidic paper device for pesticide determination in waters. Talanta 2020; 218:121108. [PMID: 32797872 DOI: 10.1016/j.talanta.2020.121108] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/27/2020] [Accepted: 04/30/2020] [Indexed: 12/31/2022]
Abstract
This work presents a new optical microfluidic paper biosensor for the detection of organophosphate pesticides and carbamate pesticides. The assay strip is composed of a paper support (1 × 17.6 mm) onto which acetylcholine esterase (AChE) and acetylcholine chloride (AChCl) are deposited, in such a way that there is a small hole between them that ensures that they only come into contact in the reaction zone when they are carried by a solution of the sample by lateral flow to the reaction zone containing bromocresol purple (BCP) as the pH indicator, immobilized by sol-gel. The sensor operates at room temperature and the rate of the inhibited reaction serves as an analytical signal, which is measured using a camera by quantifying the appropriate colour coordinate. Calibration curves were obtained for chlorpyrifos and carbaryl, with a useful concentration range from 0.24 to 20 μg L-1 for carbaryl and from 2.00 to 45 μg L-1 for chlorpyrifos. The detection limits were 0.24 and 2.00 μg L-1, respectively, and with reproducibility around 4.2-5.5%. The method was applied to the determination of pesticides in different water samples, with no sample preparation.
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Affiliation(s)
- M D Fernández-Ramos
- Department of Analytical Chemistry, Campus Fuentenueva, Faculty of Sciences, 18071, University of Granada, Spain; Unit of Excellence in Chemistry applied to Biomedicine and the Environment of the University of Granada, Spain.
| | - A L Ogunneye
- Department of Chemical Sciences, Olabisi Onabanjo University, Ago-Iwoye, Ogun State, Nigeria
| | - N A A Babarinde
- Department of Chemical Sciences, Olabisi Onabanjo University, Ago-Iwoye, Ogun State, Nigeria
| | - M M Erenas
- Department of Analytical Chemistry, Campus Fuentenueva, Faculty of Sciences, 18071, University of Granada, Spain; Unit of Excellence in Chemistry applied to Biomedicine and the Environment of the University of Granada, Spain
| | - L F Capitán-Vallvey
- Department of Analytical Chemistry, Campus Fuentenueva, Faculty of Sciences, 18071, University of Granada, Spain; Unit of Excellence in Chemistry applied to Biomedicine and the Environment of the University of Granada, Spain
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