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Zhu Z, Lv Z, Wang L, Tan H, Xu Y, Li S, Chen L. A pump-free paper/PDMS hybrid microfluidic chip for bacteria enrichment and fast detection. Talanta 2024; 275:126155. [PMID: 38678928 DOI: 10.1016/j.talanta.2024.126155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 04/21/2024] [Accepted: 04/24/2024] [Indexed: 05/01/2024]
Abstract
Developing portable and sensitive biosensors for bacteria detection is highly demanded due to their association with environmental and food safety. Paper-based microfluidic chip is the suitable candidate for constructing pump-free biosensor since paper is hydrophilic, low-cost and easy to use. However, the contradiction between sensitivity and small sample volume seriously affects the application of paper-based chip for bacteria detection. Here, a new microfluidic biosensor, combining large PDMS reservoir for sample storage, hydrophilic paper substrate for pump-free water transport, coated microspheres for bacteria capture and super absorbent resin for water absorption, is designed for the detection of bacteria in aqueous samples. Once the sample solution is introduced in the reservoir, water will automatically flow through the gaps between microspheres and the target bacteria will be captured by the aptamer coated on the surface. To facilitate PDMS reservoir bonding and ensure water transport, the upper side of paper substrate is coated with Polyethylenimine modified PDMS and the bottom side is kept unchanged. After all the solution is filtrated, fluorescent dye strained bacteria are enriched on the microspheres. The fluorescent intensity representing the number of bacteria captured is then measured using a portable instrument. Through the designed microfluidic biosensor, the bacteria detection can be achieved with 2 mL sample solution in less than 15 min for water or 20 min for diluted milk. A linear range from 10 CFU/mL to 1000 CFU/mL is obtained. The paper-based 3D biosensor has the merits of low-cost, simple operation, pump-free and high sensitivity and it can be applied to the simultaneous detection of multiple bacteria via integrating different aptamers.
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Affiliation(s)
- Zhengshan Zhu
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education & Key Disciplines Laboratory of Novel Micro-Nano Devices and System Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China; International R & D Center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing, 400044, China
| | - Zilan Lv
- Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030, China
| | - Li Wang
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education & Key Disciplines Laboratory of Novel Micro-Nano Devices and System Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China; International R & D Center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing, 400044, China
| | - Haolan Tan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 4001331, China
| | - Yi Xu
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education & Key Disciplines Laboratory of Novel Micro-Nano Devices and System Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China; International R & D Center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing, 400044, China
| | - Shunbo Li
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education & Key Disciplines Laboratory of Novel Micro-Nano Devices and System Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China; International R & D Center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing, 400044, China.
| | - Li Chen
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education & Key Disciplines Laboratory of Novel Micro-Nano Devices and System Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China; International R & D Center of Micro-nano Systems and New Materials Technology, Chongqing University, Chongqing, 400044, China.
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Zhou T, Chen D, Li H, Ge D, Chen X. Enhanced oxidase mimic activity of raspberry-like N-doped Mn 3O 4 with oxygen vacancies for efficient colorimetric detection of gallic acid coupled with smartphone. Food Chem 2024; 447:138919. [PMID: 38452538 DOI: 10.1016/j.foodchem.2024.138919] [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: 10/09/2023] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 03/09/2024]
Abstract
The content of gallic acid (GA) is positively correlated with the quality grade of tea. Here, we developed a colorimetric method based on raspberry-like N-doped Mn3O4 nanospheres (N-Mn3O4 NSs) with oxidase-like activity for GA assay. Modulating the electronic structure of Mn3O4 by N doping could promote the catalysis ability, and the produced oxygen vacancies (OVs) can provide high surface energy and abundant active sites. The N-Mn3O4 NSs presented low Michaelis-Menten constant (Km) of 0.142 mM and maximum initial velocity (Vmax) of 9.8 × 10-6 M s-1. The sensor exhibited excellent analytical performance towards GA detection, including low LOD (0.028 μM) and promising linear range (5 ∼ 30 μM). It is attributed that OVs and O2- participated in TMB oxidation. Based on the reaction color changes, a visualized semi-quantitative GA detection could be realized via a smartphone-based system. It could be applied for evaluating GA quality in market-purchased black tea and green tea.
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Affiliation(s)
- Tao Zhou
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Daqing Chen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Haoran Li
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Danhua Ge
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China.
| | - Xiaojun Chen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China.
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Mohammed Ameen SS, Omer KM. Recent Advances of Bimetallic-Metal Organic Frameworks: Preparation, Properties, and Fluorescence-Based Biochemical Sensing Applications. ACS APPLIED MATERIALS & INTERFACES 2024; 16:31895-31921. [PMID: 38869081 DOI: 10.1021/acsami.4c06931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Bimetallic-metal organic frameworks (BiM-MOFs) or bimetallic organic frameworks represent an innovative and promising class of porous materials, distinguished from traditional monometallic MOFs by their incorporation of two metal ions alongside organic linkers. BiM-MOFs, with their unique crystal structure, physicochemical properties, and composition, demonstrate distinct advantages in the realm of biochemical sensing applications, displaying improvements in optical properties, stability, selectivity, and sensitivity. This comprehensive review explores into recent advancements in leveraging BiM-MOFs for fluorescence-based biochemical sensing, providing insights into their design, synthesis, and practical applications in both chemical and biological sensing. Emphasizing fluorescence emission as a transduction mechanism, the review aims to guide researchers in maximizing the potential of BiM-MOFs across a broader spectrum of investigations. Furthermore, it explores prospective research directions and addresses challenges, offering valuable perspectives on the evolving landscape of fluorescence-based probes rooted in BiM-MOFs.
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Affiliation(s)
| | - Khalid M Omer
- Department of Chemistry, College of Science, University of Sulaimani, Qlisan Street, Sulaymaniyah, 46002 Kurdistan Region, Iraq
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4
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Frigoli M, Lowdon JW, Caldara M, Cleij TJ, Diliën H, Eersels K, van Grinsven B. Emerging Biomimetic Sensor Technologies for the Detection of Pathogenic Bacteria: A Commercial Viability Study. ACS OMEGA 2024; 9:23155-23171. [PMID: 38854523 PMCID: PMC11154936 DOI: 10.1021/acsomega.4c01478] [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: 02/19/2024] [Revised: 04/25/2024] [Accepted: 05/07/2024] [Indexed: 06/11/2024]
Abstract
Ensuring a rapid and accurate identification of harmful bacteria is crucial in various fields including environmental monitoring, food safety, and clinical diagnostics. Conventional detection methods often suffer from limitations such as long analysis time, complexity, and the need for qualified personnel. Therefore, a lot of research effort is devoted to developing technologies with the potential to revolutionize the detection of pathogenic bacteria by offering rapid, sensitive, and user-friendly platforms for point-of-care analysis. In this light, biosensors have gained significant commercial attention in recent years due to their simplicity, portability, and rapid analysis capabilities. The purpose of this review is to identify a trend by analyzing which biosensor technologies have become commercially successful in the field of bacteria detection. Moreover, we highlight the characteristics that a biosensor must possess to finally arrive in the market and therefore in the hands of the end-user, and we present critical examples of the market applications of various technologies. The aim is to investigate the reason why certain technologies have achieved commercial success and extrapolate these trends to the future economic viability of a new subfield in the world of biosensing: the development of biomimetic sensor platforms. Therefore, an overview of recent advances in the field of biomimetic bacteria detection will be presented, after which the challenges that need to be addressed in the coming years to improve market penetration will be critically evaluated. We will zoom into the current shortcomings of biomimetic sensors based on imprinting technology and aptamers and try to come up with a recommendation for further development based on the trends observed from previous commercial success stories in biosensing.
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Affiliation(s)
- Margaux Frigoli
- Sensor Engineering Department,
Faculty of Science and Engineering, Maastricht
University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Joseph W. Lowdon
- Sensor Engineering Department,
Faculty of Science and Engineering, Maastricht
University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Manlio Caldara
- Sensor Engineering Department,
Faculty of Science and Engineering, Maastricht
University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Thomas J. Cleij
- Sensor Engineering Department,
Faculty of Science and Engineering, Maastricht
University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Hanne Diliën
- Sensor Engineering Department,
Faculty of Science and Engineering, Maastricht
University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Kasper Eersels
- Sensor Engineering Department,
Faculty of Science and Engineering, Maastricht
University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Bart van Grinsven
- Sensor Engineering Department,
Faculty of Science and Engineering, Maastricht
University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
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Li WB, Liang G, Chen DJ, Ye JW, Liu JW, Li J, Shao HY, Mo ZW, Chen XM. Metal-Organic Framework Based Sensors for Benzene Vapor. Chemistry 2024; 30:e202304334. [PMID: 38388776 DOI: 10.1002/chem.202304334] [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: 12/27/2023] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 02/24/2024]
Abstract
Sensing of benzene vapor is a hot spot due to the volatile drastic carcinogen even at trace concentration. However, achieving convenient and rapid detection is still a challenge. As a sort of functional porous material, metal-organic frameworks (MOFs) have been developed as detection sensors by adsorbing benzene vapor and converting it into other signals (fluorescence intensity/wavelength, chemiresistive, weight or color, etc.). Supramolecular interaction between benzene molecules and the host framework, aperture size/shape and structural flexibility are influential factors in the performance of MOF-based sensors. Therefore, enhancing the host-guest interactions between the host framework and benzene molecules, or regulating the diffusion rate of benzene molecules by changing the aperture size/shape and flexibility of the host framework to enhance the detection signal are effective strategies for constructing MOF-based sensors. This concept highlights several types of MOF-based sensors for the detection of benzene vapor.
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Affiliation(s)
- Wen-Bin Li
- School of Environmental and Chemical Engineering, Wuyi University, Guangdong, 529020, China
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Gang Liang
- School of Environmental and Chemical Engineering, Wuyi University, Guangdong, 529020, China
| | - De-Jian Chen
- School of Environmental and Chemical Engineering, Wuyi University, Guangdong, 529020, China
| | - Jia-Wen Ye
- School of Environmental and Chemical Engineering, Wuyi University, Guangdong, 529020, China
| | - Jie-Wei Liu
- School of Environmental and Chemical Engineering, Wuyi University, Guangdong, 529020, China
| | - Jing Li
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering (IAPME), University of Macau, Macau SAR, China
| | - Huai-Yu Shao
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering (IAPME), University of Macau, Macau SAR, China
| | - Zong-Wen Mo
- School of Environmental and Chemical Engineering, Wuyi University, Guangdong, 529020, China
| | - Xiao-Ming Chen
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
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Pan B, El-Moghazy AY, Norwood M, Nitin N, Sun G. Rapid and Ultrasensitive Colorimetric Biosensors for Onsite Detection of Escherichia coli O157:H7 in Fluids. ACS Sens 2024; 9:912-922. [PMID: 38320289 PMCID: PMC10897931 DOI: 10.1021/acssensors.3c02339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 01/18/2024] [Accepted: 01/24/2024] [Indexed: 02/08/2024]
Abstract
This study presents a breakthrough in the field of onsite bacterial detection, offering an innovative, rapid, and ultrasensitive colorimetric biosensor for the detection of Escherichia coli (E. coli) O157:H7, using chemically modified melamine foam (MF). Different from conventional platforms, such as 96-well plates and fiber-based membranes, the modified MF features a macroporous reticulated three-dimensional (3D) framework structure, allowing fast and free movement of large biomolecules and bacteria cells through the MF structure in every direction and ensuring good accessibility of entire active binding sites of the framework structure with the target bacteria, which significantly increased sensitive and volume-responsive detection of whole-cell bacteria. The biosensing platform requires less than 1.5 h to complete the quantitative detection with a sensitivity of 10 cfu/mL, discernible by the naked eye, and an enhanced sensitivity of 5 cfu/mL with the help of a smartphone. Following a short enrichment period of 1 h, the sensitivity was further amplified to 2 cfu/mL. The biosensor material is volume responsive, making the biosensing platform sensitivity increase as the volume of the sample increases, and is highly suitable for testing large-volume fluid samples. This novel material paves the way for the development of volume-flexible biosensing platforms for the record-fast, onsite, selective, and ultrasensitive detection of various pathogenic bacteria in real-world applications.
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Affiliation(s)
- Bofeng Pan
- Biological
and Agricultural Engineering, University
of California, Davis, California 95616, United States
| | - Ahmed Y. El-Moghazy
- Department
of Food Science and Technology, University
of California, Davis, California 95616, United States
| | - Makela Norwood
- Biological
and Agricultural Engineering, University
of California, Davis, California 95616, United States
| | - Nitin Nitin
- Biological
and Agricultural Engineering, University
of California, Davis, California 95616, United States
- Department
of Food Science and Technology, University
of California, Davis, California 95616, United States
| | - Gang Sun
- Biological
and Agricultural Engineering, University
of California, Davis, California 95616, United States
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