Article
Environmental Sciences
Yixin Huang, Jinbin Lin, Jing Zou, Jiaxin Xu, Mengyun Wang, Huahua Cai, Baoling Yuan, Jun Ma
Summary: Introduction of ABTS as an electron shuttle in the HRP/H2O2 system enhanced the degradation efficiency of diclofenac under neutral pH conditions. The green-colored ABTS radical was identified as the main reactive species in the HRP/H2O2/ABTS system, showing no destruction and serving as an ideal electron shuttle. The reaction conditions including solution pH, HRP concentration, and H2O2 concentration impacted the formation of ABTS radical and the degradation of diclofenac in the system.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Analytical
Yue He, Jing Zhou, Ruijie Fu, Yanlin Liu, Yiwen Wang, Haoran Liu, Jing Zhao, Yongliang Cui, Bining Jiao
Summary: An ultrasensitive colorimetric method for detecting genomic DNA of Alternaria from citrus fruit samples was described in this work, utilizing a system of five groups of reporter probes that form a DNA-heptamer sandwich structure on magnetic beads. The method has a low detection limit and is suitable for Alternaria genetic detection with its high sensitivity.
Article
Environmental Sciences
Jing-Jing Liu, Jong-Gook Kim, Hye-Bin Kim, Shakya Abeysinghe, Ying-Wu Lin, Kitae Baek
Summary: Enzyme-based biocatalytic treatment is an effective method for degrading organic pollutants. In this study, horseradish peroxidase (HRP) was immobilized on functionalized rice straw biochar using glutaraldehyde as a crosslinker. The biochar was pretreated by electrochemical and acid treatments to enhance its immobilizing ability.
Article
Environmental Sciences
Luis Angel Zambrano-Intriago, Celia G. Amorim, Alberto N. Araujo, Dmitrij Gritsok, Joan Manuel Rodriguez-Diaz, Maria C. B. S. M. Montenegro
Summary: This work describes the development of an affordable, simple, and accurate electrochemical biosensor for the determination of glyphosate (GLY) in river and drinking water samples. The biosensor showed high reproducibility, excellent analytical performance, repeatability, and accuracy. It proves to be selective against other pesticides, organic acids, and inorganic salts.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Xinghua Chen, Lufang Zhao, Kaiqing Wu, Hong Yang, Qing Zhou, Yuan Xu, Yongjun Zheng, Yanfei Shen, Songqin Liu, Yuanjian Zhang
Summary: Advances in nanoscience have led to the exploration of nanozymes as enzyme alternatives. This study found that the substrate selectivity of the peroxidase-mimic M-N-C can be significantly altered by forming bound intermediates with different metals, leading to superior selectivity compared to commonly used horseradish peroxidase.
Article
Chemistry, Multidisciplinary
Sundas Jamil, Muhammad Nasir, Yaqeen Ali, Sohail Nadeem, Sidra Rashid, Muhammad Yaqoob Javed, Akhtar Hayat
Summary: A portable and biomimetic nanosensor modified with Cr2O3-TiO2 was designed for robust and colorimetric sensing of hydrogen peroxide. Utilizing a paper-based colorimetric platform, the sensor showed linear detection of H2O2 with excellent anti-interference potential.
Article
Spectroscopy
Fatemeh Behrouzifar, Seyed-Ahmad Shahidi, Fereshteh Chekin, Shabnam Hosseini, Azade Ghorbani-HasanSaraei
Summary: A simple and sensitive colorimetric assay for hydrogen peroxide detection based on ABTS oxidation by UV-Vis spectroscopy was developed in this study. The HRP-rGO hybrid biosensor, with excellent detection limit and wide linear ranges, showed great potential for monitoring H2O2 in different beverages. The formation of green product with absorption peaks at 421, 655 and 737 nm was catalyzed by the HRP-rGO hybrid, which was confirmed by various characterization techniques.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Engineering, Environmental
Diego Alberto Morales Urrea, Analia Veronica Fernandez Gimenez, Yamila Eliana Rodriguez, Edgardo Martin Contreras
Summary: Immobilized HRP in calcium alginate beads showed efficient removal of azo-dye Orange II, especially in alkaline conditions and in the presence of hydrogen peroxide. A mathematical model was developed to predict and simulate experimental results under different conditions, with satisfactory validation against new data indicating high agreement between simulations and experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Materials Science, Multidisciplinary
Giorgio Giuseppe Carbone, Daniela Manno, Antonio Serra, Alessandro Buccolieri
Summary: This study developed an innovative wet synthesis method to produce a stable and non-oxidized colloidal solution of copper nanoparticles, which showed potential for detecting hydrogen peroxide.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Wei Lu, Shuhan Chen, Haifeng Zhang, Jiajun Qiu, Xuanyong Liu
Summary: In this study, Fe-N-C single atom nanozymes (SANs) with peroxidase and oxidase-like activities were prepared, and a colorimetric biosensor was developed for efficient detection of H2O2 and GSH.
JOURNAL OF MATERIOMICS
(2022)
Article
Biochemistry & Molecular Biology
Xiaoqing Li, Lisi Wang, Baoli Wang, Siyue Zhang, Meng Jiang, Wanting Fu, Wei Sun
Summary: In this study, a new electrochemical horseradish peroxidase biosensor was designed using black phosphorene and single-walled carbon nanotubes nanocomposites as modifiers. The experimental results showed that the biosensor exhibited excellent electrocatalytic activity and analytical performance, with good detection efficiency for different target substances.
Article
Materials Science, Multidisciplinary
Jacopo Emilio Giaretta, Farshad Oveissi, Fariba Dehghani, Sina Naficy
Summary: The article presents a 3D printable paper-based sensor for detecting H2O2, which simplifies the fabrication process and detects H2O2 concentration by observing the change in resistance. The integration of enzyme enhances the detection performance of the sensor.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Chemistry, Multidisciplinary
Luiza Izabela Jinga, Gianina Popescu-Pelin, Gabriel Socol, Sorin Mocanu, Madalina Tudose, Daniela C. Culita, Andrei Kuncser, Petre Ionita
Summary: In this study, gold nanoparticles were deposited on titanium dioxide nanoparticles and the material was found to effectively degrade methylene blue dye in the presence of hydrogen peroxide. Longer exposure time and higher oxidant content led to up to 90% degradation of the dye. The material showed promising reusability without loss of activity.
Article
Chemistry, Analytical
Silvina V. Kergaravat, Silvia N. Fabiano, Adriana R. Soutullo, Silvia R. Hernandez
Summary: Glyphosate is the most widely used herbicide in Argentina, and there is controversy surrounding its safety. Two electrochemical screening methods based on horseradish peroxidase (HRP) inhibition have been developed for glyphosate detection.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Physical
Shivanand Chettri, Liang-Ting Wu, Sagarmani Rasaily, Debesh Sharma, Bikram Gurung, Rajani Dewan, Sudarsan Tamang, Jyh-Chiang Jiang, Anand Pariyar
Summary: Replicating the enzymatic surface microenvironment in vitro is challenging, but constructing an analogous model could facilitate our understanding of surface effects and aid in developing an efficient bioinspired catalytic system. In this study, five unique Cu2O morphologies were generated, and the surface morphology variations were found to be a consequence of differences in the exposure of low-index facets. The reactivity of Cu2O was found to be influenced by the proportion of {110} planes, with r-Cu2O exhibiting the highest reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)