Article
Chemistry, Multidisciplinary
Subhankar Sahu, Lokesh Kumar, Sumita Das, Dipti Gupta, Ruchi Anand
Summary: This study proposes a strategy that combines organic electronics with biosensor scaffolds to create a compact device for monitoring environmental aromatic pollution. By coupling biosensing protein MopR with an organic electrochemical transistor (OECT), a sensor module capable of efficient detection of phenol was designed. Exclusive phenol detection with minimal loss of sensitivity could be achieved in complex pollutant mixtures and real environmental samples.
Article
Chemistry, Multidisciplinary
Yan Zhang, Yue Wang, Yan Dong, Zhiqiang Zhang, Yasushi Hasebe, Jianmin Zhu, Zhaobin Liu, Enjun Gao
Summary: A highly sensitive and selective electrochemical biosensor for catechol detection was developed by immobilizing tyrosinase on a glassy carbon electrode modified with sulfide minerals in the co-adsorption of acridine orange. This new sensor showed excellent electrochemical activity and good reproducibility, stability, repeatability, and anti-interference ability.
Article
Chemistry, Multidisciplinary
P. Ramu, S. P. Vimal, P. Suresh, Anandhavelu Sanmugam, U. Saravanakumar, Raju Suresh Kumar, Abdulrahman I. Almansour, Natarajan Arumugam, Dhanasekaran Vikraman
Summary: The PEDOT-GO-PPO sensor was fabricated for dopamine detection, with the morphology and oxidation-reduction characteristics studied for optimization. Analysis of the detection limit and linear range data showcased the performance advantages of the modified electrode.
Article
Chemistry, Analytical
Ademar Wong, Anderson M. Santos, Orlando Fatibello-Filho, Maria D. P. T. Sotomayor
Summary: A renewable tyrosinase-based biosensor for catechol detection was developed in this work, showing high accuracy and sensitivity in experiments, with successful application in river water samples. The biosensor is advantageous for its direct detection without the use of a mediator and its potential for immobilizing other enzymes and biomolecules with low-cost materials.
Article
Biochemistry & Molecular Biology
Sevinc Kurbanoglu, Sevki Can Cevher, Levent Toppare, Ali Cirpan, Saniye Soylemez
Summary: In this study, an electrochemical Tyrosinase enzyme inhibition biosensor based on a conjugated polymer and fullerene architecture has been developed for the detection of indomethacin drug active compound. The biosensor exhibited high sensitivity and fast response for catechol detection. The inhibition of Tyrosinase by indomethacin was investigated, revealing mixed type enzyme kinetics.
BIOELECTROCHEMISTRY
(2022)
Article
Chemistry, Analytical
Shuai Zhao, Tuoyu Zhou, Aman Khan, Zhengjun Chen, Pu Liu, Xiangkai Li
Summary: An electrochemical biosensor for bisphenol A detection was developed by displaying tyrosinase on the surface of Escherichia coli cells and adsorbing it onto a glassy-carbon electrode. The biosensor showed a linear relationship within a concentration range and high detection limit, with respectable accuracy for detecting bisphenol A in tea and juice samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Apichart Saenchoopa, Supannika Klangphukhiew, Rachata Somsub, Chanon Talodthaisong, Rina Patramanon, Jureerut Daduang, Sakda Daduang, Sirinan Kulchat
Summary: The study introduces a disposable electrochemical biosensor for detecting Hg(II) in water by modifying a screen-printed carbon electrode (SPCE) with a composite layer of silver nanowires, hydroxymethyl propyl cellulose, chitosan, and urease. The biosensor showed excellent performance with an incubation time of 10 min and a linear sensitivity range of 5-25 mu M. The device exhibited good recoveries for Hg(II) detection in real water samples and proved to be a reliable method compared to inductively coupled plasma optical emission spectrometry (ICP-OES).
Article
Biochemistry & Molecular Biology
Beste Kapan, Sevinc Kurbanoglu, Emren Nalbant Esenturk, Saniye Soylemez, Levent Toppare
Summary: The study proposed and demonstrated a design for a gold nanoparticle surface used in a nanosensor based on tyrosinase. Through optimization studies, successful immobilization of tyrosinase on a modified electrode was achieved, with catechol as the drug inhibition platform. The sensor showed excellent performance and sensitivity, and was able to detect tyrosinase inhibition and ibuprofen inhibition.
PROCESS BIOCHEMISTRY
(2021)
Article
Polymer Science
Jonathan M. Millican, Eva Bittrich, Anja Caspari, Kathrin Poschel, Astrid Drechsler, Uwe Freudenberg, Timothy G. Ryan, Richard L. Thompson, Doris Pospiech, Lian R. Hutchings
Summary: A novel terpolymer containing dopamine methacrylamide (DMA) was synthesized and characterized for potential use as a biosensor coating. The presence of DMA was found to impact the properties of the copolymer, with the catechol group playing a significant role in adhesion. DMA was crucial for preventing significant desorption of the copolymer.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Chemistry, Analytical
Dongwei Wang, Jiasheng Wang
Summary: The study demonstrated the potential of functionalized polypyrrole nanowires as a platform for label-free miRNA detection using EIS, and constructed a sensitive and selective miRNA biosensor based on PPyNWs/PAMAM hybrid. The biosensor showed excellent sensing performances in monitoring DNA/miRNA hybridization, indicating the microstructure of the PPy nanowires array greatly improved its performance.
Article
Chemistry, Analytical
Sarvajith Malali Sudhakara, Mruthyunjayachari Chattanahalli Devendrachari, Harish Makri Nimbegondi Kotresh, Fasiulla Khan
Summary: In this study, a new electrocatalyst was synthesized by decorating silver nanoparticles on the surface of a supramolecular electrocatalyst tetra amino cobalt phthalocyanine/polyaniline composite. The modified electrode exhibited excellent activity and stability for simultaneous detection of hydroquinone and catechol.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Biophysics
Yannig Nedellec, Chantal Gondran, Karine Gorgy, Stefan Mc Murtry, Pierre Agostini, Omar Elmazria, Serge Cosnier
Summary: A biosensor based on the release of enzyme substrate was developed for inhibitive detection of benzoic acid. The sensor demonstrated the ability to detect benzoic acid and confirm its inhibiting action through measuring cathodic current.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Biophysics
Yongli Ye, Xinyu Sun, Yinzhi Zhang, Xiaomin Han, Xiulan Sun
Summary: In this study, a three-dimensional cell culture system-based electrochemical biosensor was developed to evaluate the antioxidant activity of active components. The biosensor exhibited good linear correlation, high sensitivity, and was successfully used for the assessment of antioxidant activity in various natural products.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Wenjin Wu, Yuping Yang, Lan Wang, Tingting Xu, Rui Wang
Summary: The mussel-inspired material EPD, designed and fabricated with a Schiff base structure, showed excellent detection limit and linear range as well as on-demand antibacterial activity for the simultaneous detection and elimination of S. aureus in food or drinks matrices. The immunosensor exhibited good accuracy in real milk samples, with values closely matching standard results obtained from the plate count method, and demonstrated good selectivity, reproducibility, and stability, highlighting its potential significant applications in drinks safety monitoring.
Article
Biochemical Research Methods
Veronika Svitkova, Katarina Nemcekova, Vlastimil Vyskocil
Summary: In this study, a mercury meniscus-modified silver solid amalgam electrode was used for the detection of UV-induced DNA damage. The integrity of the double-stranded DNA layer was indirectly detected using methylene blue reduction, and different wavelengths of UV irradiation resulted in different electrochemical signals.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Maria Angeles Castro-Sastre, Cristina Garcia-Cabezon, Ana Isabel Fernandez-Abia, Fernando Martin-Pedrosa, Joaquin Barreiro
Summary: This investigation focused on evaluating the corrosion behavior of an as-cast Al-Si alloy obtained by traditional sand casting and binder jetting mold casting methods. The sample processed by binder jetting mold showed higher corrosion resistance, nobler potentials, lower corrosion densities, higher polarization resistance, and more stable passive layers compared to the sample processed by sand casting.
Article
Materials Science, Multidisciplinary
C. Garcia-Cabezon, M. A. Castro-Sastre, A. Fernandez-Abia, M. L. Rodriguez-Mendez, F. Martin-Pedrosa
Summary: This study aimed to analyze the corrosion behavior, hardness, and microstructure of 17-4 PH SS manufactured by SLM in comparison to the commercial counterparts. The results confirmed that the SLM 17-4 PH SS demonstrated superior corrosion resistance and desirable microstructure characteristics.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Chemistry, Analytical
Coral Salvo-Comino, Patricia Martin-Bartolome, Jose Luis Pura, Clara Perez-Gonzalez, Fernando Martin-Pedrosa, Cristina Garcia-Cabezon, Maria Luz Rodriguez-Mendez
Summary: Recent advances in the field of electronic tongues have led to the development of a voltammetric bioelectronic tongue specifically designed for analyzing milk. The performance of the multisensor system has been improved by incorporating biosensors with silver nanomaterials. It has been shown that silver nanowires provide a more effective platform for immobilizing biomolecules than silver nanoparticles, resulting in enhanced sensitivity and detection limits. Two multi-sensor systems have been developed, with the AgNW/bioET system outperforming the AgNP/bioET system in terms of discrimination capabilities.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Guilherme G. Teixeira, Antonio M. Peres, Leticia Estevinho, Pedro Geraldes, Cristina Garcia-Cabezon, Fernando Martin-Pedrosa, Maria Luz Rodriguez-Mendez, Luis G. Dias
Summary: A lab-made electronic nose with vacuum sampling and a sensor array was used for the quantitative analysis of vapor-liquid equilibrium in aqueous solutions of organic compounds. The results showed that the electronic nose could accurately predict the total mass of organic compounds and could be a useful tool for analyzing volatile compounds in aqueous solutions following Henry's law.
Article
Nanoscience & Nanotechnology
Ana Isabel Quilez-Molina, Suset Barroso-Solares, Violeta Hurtado-Garcia, Jose Alejandro Heredia-Guerrero, Maria Luz Rodriguez-Mendez, Miguel Angel Rodriguez-Perez, Javier Pinto
Summary: The immobilization of CuNPs into a PCL matrix via electrospinning effectively prevents oxidation and ensures long-term catalytic activity. The PCL-2.5Cu composite shows high reusability, retaining the high elimination capability for at least five cycles.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Food Science & Technology
Clara Perez-Gonzalez, Coral Salvo-Comino, Fernando Martin-Pedrosa, Cristina Garcia-Cabezon, Maria Luz Rodriguez-Mendez
Summary: An innovative bioelectronic tongue (bioET) for milk analysis has been developed, utilizing potentiometric biosensors based on specific enzymes and nanomaterials. By immobilizing enzymes on carboxylated polyvinyl chloride membranes combined with gold nanoparticles, the biosensors exhibit excellent sensitivity and reproducibility. The bioET can efficiently discriminate different classes of milk and simultaneously assess multiple physicochemical parameters, demonstrating its potential in the dairy industry.
Article
Materials Science, Multidisciplinary
C. Garcia-Cabezon, C. Garcia Hernandez, M. A. Castro-Sastre, A. I. Fernandez-Abia, M. L. Rodriguez-Mendez, F. Martin-Pedrosa
Summary: This research investigates the impact of heat treatment on the microstructure, hardness, and corrosion resistance of 17-4 PH SS processed by Selective Laser Manufacturing. The study found that post-process heat treatment resulted in a uniform microstructure, improved corrosion resistance, and remarkable hardening. Furthermore, the heat-treated samples showed no relevant release of metallic elements, indicating potential use as a biomaterial.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Chemistry, Analytical
Batoul Hosseinzadeh, Maria Luz Rodriguez-Mendez
Summary: Feeding the increasing world population requires high-quality food, and it is necessary to control food quality parameters throughout the fresh produce supply chain. Electrochemical sensors (ECSs) based on metal-organic frameworks (MOFs) have emerged as a powerful and reliable method for food evaluation, overcoming the limitations of traditional analytical techniques. MOF-based ECSs offer fast and effective detection of food contaminants or nutrients, with the potential for diverse applications in monitoring food quality.
Article
Nanoscience & Nanotechnology
Ana Isabel Quilez-Molina, Suset Barroso-Solares, Violeta Hurtado-Garcia, Jose Alejandro Heredia-Guerrero, Maria Luz Rodriguez-Mendez, Miguel Angel Rodriguez-Perez, Javier Pinto
Summary: The immobilization of copper nano-particles (CuNPs) into a polycaprolactone (PCL) matrix via electrospinning is an effective method to enhance stability and catalytic activity for the degradation of chlorpyrifos pesticide.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Food Science & Technology
C. Perez-Gonzalez, C. Salvo-Comino, F. Martin-Pedrosa, M. L. Rodriguez-Mendez, C. Garcia-Cabezon
Summary: This study aimed to develop an impedimetric electronic tongue (ET) for the dairy industry, with enhanced sensitivity and selectivity using silver nanoparticles and enzymes. Principal Component Analysis (PCA) of the signals allowed discrimination of milks with different characteristics, and the ET signals were correlated with physicochemical parameters. The study confirmed the high cross-selectivity of the system, enabling the development of classification models and correlations between the ET and physicochemical parameters.