Review
Chemistry, Applied
Xiaoyong Chen, Dongxiao Sun-Waterhouse, Wanzi Yao, Xiong Li, Mouming Zhao, Lijun You
Summary: Increasing studies focus on the degradation of polysaccharides by free radicals, particularly those generated from hydrogen peroxide (H2O2). Free radicals mainly break glycosidic bonds through hydrogen abstraction, affecting degradation efficiency. Various factors such as polysaccharide and H2O2 concentration, temperature, and pH impact degradation. Additionally, free radical degradation alters physicochemical and structural properties, enhancing bioactivities like antioxidant, antitumor, and anticoagulant activities.
Article
Engineering, Environmental
Tao Fu, Xiaobo Gong, Jinrui Guo, Zhao Yang, Yong Liu
Summary: The study successfully demonstrated the efficient degradation of high concentration 4-chlorophenol using a novel catalytic peroxide oxidation system, providing a new method and strategy for the treatment of refractory chlorophenols wastewater.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Analytical
Sopita Rattanopas, Albert Schulte, Somjai Teanphonkrang
Summary: In this study, effective amperometric sensors for cathodic hydrogen peroxide (H2O2) detection were produced and characterized, demonstrating good linearity and high sensitivity. The combination of PB/CNT layer and gelatin/zein layer in a sandwich-type sensor proved to be successful, providing accurate detection of H2O2 concentrations in model and real samples. The sensors are cost-effective, easy to make, and can be used for electrochemical H2O2 analyses in various applications.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xin Wang, Qi Ding, Ying Tian, Wei Wu, Feida Che, Ping Li, Wen Zhang, Wei Zhang, Bo Tang
Summary: This study developed two fluorescent probes to monitor H2O2 in mitochondria and lysosomes. The findings from fluorescence imaging demonstrated that mitochondrial H2O2 is involved in reduced GCase activity in lysosomes in depressed mice, providing a valuable tool for understanding the pathogenesis of depression.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Chenglin Zhang, Qiuchen He, Su Zhan, Feng Zhou
Summary: This study established a ballast water treatment system that can efficiently inactivate marine microorganisms without the need for additional sacrificial agents. The introduction of AgQDs improved the photocatalytic sterilization efficiency, and it was found that AgQDs play multiple roles in facilitating charge transportation and generating robust oxygen species for bacterial inactivation.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Engineering, Environmental
Yang Li, Christopher J. Miller, Lei Wu, T. David Waite
Summary: This study demonstrates an electrochemical advanced oxidation process (EAOP) that can simultaneously catalyze the hydrogen evolution reaction (HER) and the oxygen reduction reaction (ORR) to generate atomic hydrogen (H*) and hydrogen peroxide (H2O2) in situ. By using a palladium-coated carbon-PTFE gas diffusion electrode (Pd/C GDE) as a catalytic cathode, hydroxyl radicals ((OH)-O-center dot) can be formed by the reaction of electrogenerated H* with H2O2. The H*/GDE process is more effective in degrading organic contaminants compared to the conventional H*/H2O2 process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
You Zhang, Wenhong Fan, Xiaomin Li, Wen-Xiong Wang, Shu Liu
Summary: In this study, nanobubble technology and hydrogen water were combined for the first time to remove reactive oxygen species caused by environmental stress. Hydrogen nanobubbles showed remarkable capability in removing H2O2 and O(2)(center dot- ), and increasing the activity and expression of antioxidant enzymes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Applied
Liying Chen, Xinan Xie, Yan Li, Housheng Xiong, Lu Li
Summary: This study investigated the grafting mechanism of whey protein isolate (WPI) with (-)-Epigallocatechin-3-gallate (EGCG) through experimental techniques and molecular docking. The results showed that the ascorbic acid radical anion (Asc(center dot-)) generated in the Asc/H2O2 system removed hydrogen atoms from sensitive amino acids, leading to the formation of WPI-EGCG graft. Moreover, Asc(center dot-) changed the secondary structure of WPI and induced oxidative deamination of amino acids.
Article
Agricultural Engineering
Hanyue Sun, Ruizhi Xing, Xiaoyu Ye, Keke Yin, Yilan Zhang, Zhi Chen, Shungui Zhou
Summary: The production of hydroxyl radicals ((OH)-O-center dot) during composting and its effect on composting efficiency were investigated in this study. Iron mineral supplemented thermophilic composting (imTC) was proposed as a method to enhance (OH)-O-center dot production and accelerate the maturation of composting. The results showed that imTC had a 1.39-fold increase in (OH)-O-center dot production compared to ordinary thermophilic composting (oTC). The increase in (OH)-O-center dot significantly improved organic matter degradation and humic substances formation, resulting in a 25% reduction in maturity time.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Lei Wang, Yi Chen, Baiyang Chen, Jie Yang
Summary: This study showed that reduced oxygen mainly generates center dot OH, and photolysis products can trigger the formation of H2O2 under 254 nm UV. Additionally, evidence of direct photolysis-induced indirect photolysis phenomenon was presented, along with a comprehensive methodology to identify the presence and sources of radicals.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Jiaying Yan, Marcello Brigante, Gilles Mailhot, Wenbo Dong, Yanlin Wu
Summary: The study compared the performance, mechanism, degradation pathways, and product toxicity of Fe(III) activated persulfate (PS) and H2O2 modified by catechin (CAT) systems in degrading atenolol (ATL) as a model contaminant. The H2O2 system showed higher degradation efficiency (91.0%) compared to the PS system (52.4%) under the same experimental condition. CAT concentration influenced ATL degradation in the H2O2 system, while the optimal CAT concentration in the PS system was 5 μM. Both systems reduced luminescent bacteria inhibition rates by approximately 25%.
Article
Chemistry, Inorganic & Nuclear
Manickam Selvaraj, Mohammed A. Assiri, Samuel Lalthazuala Rokhum, C. Manjunatha, Jimmy Nelson Appaturi, Sepperumal Murugesan, Asim Bhaumik, Ch Subrahmanyam
Summary: A sustainable method for producing aromatic ketones was developed using a new catalyst, demonstrating environmentally friendly solvent-free reactions. The catalyst's activity, stability, and recyclability were evaluated experimentally, and the mechanism of the catalytic reaction was studied in depth.
DALTON TRANSACTIONS
(2021)
Article
Engineering, Environmental
Taynara O. Silva, Jesus Fernandez-Cascan, Julia Isidro, Cristina Saez, Marcos R. V. Lanza, Manuel A. Rodrigo
Summary: This study demonstrates the efficient production of hydrogen peroxide using an optimized electrochemical cell and its successful application in treating leachate from an industrial dump. The results suggest that oxidation by molecular H2O2 is the most effective treatment for this type of waste, outperforming electrochemically assisted Fenton or photolysis methods.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Chemistry, Analytical
Raphael Kircher, Hans Hasse, Kerstin Muennemann
Summary: Analysis of fast-flowing liquids with NMR spectroscopy is challenging due to poor signal intensity caused by short residence times in the spectrometer's magnetic field. Different methods were experimentally studied to counteract this issue, with Overhauser dynamic nuclear polarization (ODNP) proving to be effective in enhancing signal intensity even at high flow rates.
ANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Environmental
Zijun Tan, Xin Qin, Peike Cao, Shuo Chen, Hongtao Yu, Yan Su, Xie Quan
Summary: By enhancing the adsorption of H2O2 on a nitrogen-doped porous carbon (NPC) catalyst, highly active &•OH is generated for the electrochemical-activation of H2O2. The study provides new insight into the fabrication of efficient carbonaceous catalysts for the degradation of refractory organic pollutants.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Correction
Optics
J. O. Grasdijk, X. F. Bai, I. Engin, K. Jungmann, H. J. Krause, B. Niederlaender, A. Offenhaeuser, M. Repetto, L. Willmann, S. Zimmer
APPLIED PHYSICS B-LASERS AND OPTICS
(2020)
Article
Food Science & Technology
Jan Pietschmann, Holger Spiegel, Hans-Joachim Krause, Stefan Schillberg, Florian Schroeper
Article
Multidisciplinary Sciences
Seung-Min Choi, Jae-Chan Jeong, Jinsun Kim, Eul-Gyoon Lim, Chang-beom Kim, Sang-Jin Park, Dae-Yong Song, Hans-Joachim Krause, Hyobong Hong, In So Kweon
SCIENTIFIC REPORTS
(2020)
Article
Engineering, Electrical & Electronic
Jie Xu, Christian Benden, Yi Zhang, Jie Li, Hans-Joachim Krause
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2020)
Article
Food Science & Technology
Jan Pietschmann, Dominik Dittmann, Holger Spiegel, Hans-Joachim Krause, Florian Schroeper
Article
Microbiology
Jan Pietschmann, Nadja Voepel, Leonie Voss, Stefan Rasche, Max Schubert, Michael Kleines, Hans-Joachim Krause, Tamlyn M. Shaw, Holger Spiegel, Florian Schroeper
Summary: The emergence of novel coronavirus in China in December 2019 led to a global pandemic, where vaccination is expected to provide containment of the virus. To better detect antibodies, a novel and rapid serological magnetic immunodetection (MID) point-of-care (PoC) assay was developed, giving qualitative and semiquantitative results of SARS-CoV-2-specific antibody levels in patient's sera within a short time.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ulrich M. Engelmann, Ahmed Shalaby, Carolyn Shasha, Kannan M. Krishnan, Hans-Joachim Krause
Summary: The dual-frequency magnetic excitation of magnetic nanoparticles enhances biosensing applications. The study found that over 90% of the frequency mixing magnetic response signal is generated by the largest 10% of nanoparticles, while small particles do not contribute to the signal.
Article
Chemistry, Analytical
Ali Mohammad Pourshahidi, Stefan Achtsnicht, Mrinal Murali Nambipareechee, Andreas Offenhaeusser, Hans-Joachim Krause
Summary: Magnetic immunoassays using Frequency Mixing Magnetic Detection (FMMD) are increasingly popular for quantitative detection of analytes. Different types of magnetic beads can be distinguished by their response to magnetic excitation at different magnetic offset fields. By analyzing binary mixtures of magnetic particles, accurate mixing ratios can be determined with greater than 14% accuracy, enabling multiplex detection of different analytes.
Article
Chemistry, Analytical
Yongqiang Li, Peixiang Ma, Quan Tao, Hans-Joachim Krause, Siwei Yang, Guqiao Ding, Hui Dong, Xiaoming Xie
Summary: The use of a magnetic GQDs-based probe coupled with ULF NMR enables rapid, safe, and sensitive detection of SARS-CoV-2, improving efficiency and reducing the risk of infection for testers.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Mengxiao Song, Hans-Joachim Krause, Danfeng Zhou, Jie Li
Summary: High-Tc radio-frequency (rf) superconducting quantum interference devices are widely used in low-field measurements due to their high sensitivity and resolution. Harmonic analysis is an efficient method for finding the optimal working point, and wavelet analysis shows over 50% improvement in mean square error.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2021)
Article
Cell Biology
F. Friedland, S. Babu, R. Springer, J. Konrad, Y. Herfs, S. Gerlach, J. Gehlen, H. -j. Krause, L. De Laporte, R. Merkel, E. Noetzel
Summary: In this study, a magnetic shear strain device was developed to analyze the response of human breast gland cells to shear strain. The results showed that breast spheroids have resistance to shear strain, which increases with the maturation of the basement membrane and basoapical polarization. Interestingly, poorly developed spheroids were more prone to the extrusion of apoptotic cells under cyclic strain. This new device provides a versatile tool to study the response of 3D cell culture models to cyclic shear stress.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Ulrich M. Engelmann, Ali Mohammad Pourshahidi, Ahmed Shalaby, Hans -Joachim Krause
Summary: This article discusses the application of biomedical magnetic nanoparticles, focusing on the impact of particle core size on signal generation. Through simulation experiments, it was found that particles of approximately 20 nanometers in size have the most significant contribution to signal generation in two different experimental systems. The research also reveals insights into the microstructure of MNP and suggests the use of FMMD for MNP characterization and fine-tuning in biosensing.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Ali Mohammad Pourshahidi, Ulrich M. Engelmann, Andreas Offenhaeusser, Hans-Joachim Krause
Summary: Frequency mixing magnetic detection (FMMD) is a widely used measurement technique in magnetic immunoassays. This research overcomes the ambiguity in core size determination of magnetic nanoparticles (MNPs) by modeling the signal intensity and achieves precise sample characterization.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Analytical
Ali Mohammad Pourshahidi, Stefan Achtsnicht, Andreas Offenhaeusser, Hans-Joachim Krause
Summary: Frequency mixing magnetic detection (FMMD) has potential applications in magnetic biosensing, multiplex detection of magnetic nanoparticles (MNP), and determination of core size distribution of MNP samples. This study introduces a measurement head using ring-shaped permanent magnets and a steel cylinder to generate a static offset magnetic field. The setup offers advantages in terms of portability compared to traditional electromagnet setups, which require a current source and cooling strategies.
Article
Chemistry, Analytical
Yongqiang Li, Zhifeng Shi, Liuyang Shang, Quan Tao, Qisheng Tang, Hans-Joachim Krause, Siwei Yang, Guqiao Ding, Hui Dong
Summary: Magnetic relaxation switches (MRS) based on the state changes of magnetic nanoparticles are important for biomolecule detection in in vitro diagnosis. Magnetic graphene quantum dots have been used as magnetic probes and shown high sensitivity. This study developed a magnetic separation-assisted MRS to detect endoglin, using iron oxide as the magnetic carrier and magnetic graphene quantum dots as the magnetic probe. The assay demonstrated a broad linear range and a sensitive limit of detection, which is two orders of magnitude lower than that of MRS without magnetic separation.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
