Review
Food Science & Technology
Luana Schmidt, Osmar Damian Prestes, Paula Rossini Augusti, Jose Claudio Fonseca Moreira
Summary: Olive oil and olive pomace, as main components of the Mediterranean diet, contain phenolic compounds that contribute to various health benefits. These compounds, such as oleuropein, tyrosol, and hydroxytyrosol, are believed to prevent and control diseases like cardiovascular diseases and cancer. However, olives and their products can be contaminated by mycotoxins, pesticide residues, and polycyclic aromatic hydrocarbons. Phenolic compounds in olive oil and pomace can reduce the toxicity of these contaminants, but the pollutants may also affect the beneficial properties of these products. Further studies are needed to understand the interactions between bioactive and toxic compounds in olive oil and pomace for a better understanding of their health benefits.
Article
Biochemical Research Methods
N. Manousi, E. A. Deliyanni, E. Rosenberg, G. A. Zachariadis
Summary: A novel magnetic Fe3O4@GO-PANI nanocomposite was synthesized and applied for the magnetic solid-phase extraction of PAHs and N-PAHs with high accuracy, low limits of detection, and good stability. The method was successfully applied to water samples from various sources, and the sorbent could be reused multiple times, demonstrating practical value.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Environmental Sciences
Hao Wu, Tingjie Zhan, Shixuan Cui, Jiayan Chen, Qinyang Jin, Weiping Liu, Chunlong Zhang, Shulin Zhuang
Summary: The study revealed that anthracene and its derivatives can disrupt vascular endothelial barrier function in human umbilical vein endothelial cells, leading to paracellular gap formation, downregulation of cell junction protein expression, thus providing essential in vitro evidence for their association with adverse cardiovascular outcomes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Food Science & Technology
Alejandro Mandelli, Maria Guinez, Soledad Cerutti
Summary: A novel analytical methodology for the extraction and determination of polycyclic aromatic hydrocarbon derivatives in bee honey samples was developed. The method was found to be straightforward, sustainable, and low-cost. The results showed higher levels of nitro- and oxy-PAHs in honey samples compared to unsubstituted PAHs, highlighting the need for routine control and concern regarding the transfer of contaminants in the food chain.
Article
Engineering, Chemical
Yu-Hui Wang, Li-Tao Wang, Zhi-Zhen Yao, Jun-Jian Yin, Zi-Bin Huang, Pei-Qing Yuan, Wei-Kang Yuan
Summary: This study investigated the formation of aromatic carbon radicals during heavy oil thermal processing, finding that increasing reaction temperature or radical concentration promotes the reaction. The main contribution to aromatic carbon radicals comes from (CH3)• in PAHs, and the activation entropy of H-abstraction affects the difference in reaction rate constants. The uniqueness of H-abstraction in hetero-PAHs leads to distinct reaction behaviors.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Environmental Sciences
Dongsheng Di, Ruyi Zhang, Haolong Zhou, Muhong Wei, Yuan Cui, Jianli Zhang, Tingting Yuan, Qian Liu, Tingting Zhou, Junan Liu, Qi Wang
Summary: This study aimed to prospectively evaluate the association between combined exposure to phenols, chlorophenol pesticides, phthalates, and PAHs and mortality risk in a representative US population. The study found that high levels of these chemicals were significantly associated with increased risk of all cause, cardiovascular disease, and cancer mortality.
Article
Environmental Sciences
Xiangtao Jiang, Niki Conner, Kaijun Lu, Jace W. Tunnell, Zhanfei Liu
Summary: Nurdles, also known as plastic resin pellets, are a major source of plastic pollution on beaches globally. This study collected nurdles from 24 sites in the coastal bend region of south Texas and investigated their morphologies and associated pollutants. The results showed variations in color, shape, polymer composition, and oxidation degree of the nurdles. PAHs and mercury were detected on nurdles at some sampling sites, indicating potential risks of pollutant exposure to marine organisms in ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Yusuke Nakakuki, Takashi Hirose, Hikaru Sotome, Min Gao, Daiki Shimizu, Ruiji Li, Jun-Ya Hasegawa, Hiroshi Miyasaka, Kenji Matsuda
Summary: Helically twisted conductive nanocarbon materials are suitable for optoelectronic and electromagnetic molecular devices on the nanometer scale, showing a large effective conjugation length and ultrafast decay dynamics. The extended π-helicenes achieved a large effective conjugation length through helical fusion, leading to an absorption edge in the near-infrared region.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Xiushang Xu, Amy L. Vonder Haar, Rengo Yoshioka, Qizheng Zhang, Serhii Vasylevskyi, Andrew J. Musser, Akimitsu Narita
Summary: A benzo[rst]pentaphene derivative, BPP-MeOPA, was synthesized and characterized by NMR and single-crystal X-ray analysis. Investigation of its photophysical properties, including transient absorption spectroscopy, revealed improved absorption and emission features from an S-1 state with excitonic and charge-transfer character by introducing MeOPA groups.
CHEMICAL COMMUNICATIONS
(2023)
Article
Environmental Sciences
Abigail Gaylord, Kurunthachalam Kannan, Mathusa Lakuleswaran, Hongkai Zhu, Akhgar Ghassabian, Melanie H. Jacobson, Sara Long, Hongxiu Liu, Yelena Afanasyeva, Linda G. Kahn, Bo Gu, Mengling Liu, Shilpi S. Mehta-Lee, Sara G. Brubaker, Leonardo Trasande
Summary: The study investigated the exposure of pregnant women in New York City to various chemicals, finding higher levels of certain organophosphate pesticides and other chemicals compared to other pregnancy cohorts. The concentrations and changes of chemical metabolites during pregnancy varied, indicating the need for further research.
ENVIRONMENTAL POLLUTION
(2022)
Review
Environmental Sciences
Meng Qiao, Weixiao Qi, Huijuan Liu, Jiuhui Qu
Summary: Oxygenated polycyclic aromatic hydrocarbons (OPAHs) have higher concentrations and toxicity in water environments, posing significant ecological risks to surface water ecosystems.
ENVIRONMENT INTERNATIONAL
(2022)
Review
Food Science & Technology
Adriana Nowak, Ireneusz Nowak
Summary: Honey is a natural food with pro-health properties but can also be contaminated with environmental pollutants. Research focuses on heavy metals and pesticides in honey, with urban and industrial areas showing higher contamination levels than ecological and rural locations. Propolis and bee pollen contain more pollutants compared to honey. Most toxic pollutants in honey/bee products are not a threat to consumer health, although pesticides and heavy metals are of concern due to exceedance of maximum limits in some studies.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Article
Environmental Sciences
Judy L. Crane, Alexandra L. Bijak, Michelle A. Maier, Mari A. Nord
Summary: Background threshold values have been developed for sediment quality parameters from 969 lakes in the conterminous United States for the first time, providing a statistical basis for estimating current ambient background.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Tao Ma, Jijie Kong, Weidi Li, Xinying Cheng, Yueqing Zhang, Deyang Kong, Shaogui Yang, Shiyin Li, Limin Zhang, Huan He
Summary: This study conducted a systematic monitoring of NPAHs and PAHs in agricultural soils of the Taige Canal basin. The results showed that four-ring NPAHs and PAHs were predominant and mainly originated from vehicle exhaust emissions, coal combustion, and biomass combustion. The health risk posed by PAHs in soils was lower than that of NPAHs in the Taige Canal basin.
Article
Chemistry, Organic
Yushi Ohno, Shogo Ando, Daisuke Furusho, Ryoyu Hifumi, Yuuya Nagata, Ikuyoshi Tomita, Shinsuke Inagi
Summary: Here, a facile and selective synthesis of cationic azatriphenylene derivatives was achieved through electrochemical intramolecular cyclization, where the key step involves atom-economical C-H pyridination without a transition-metal catalyst or an oxidant. This proposed strategy provides a practical approach for introducing cationic nitrogen (N (+)) into pi-electron systems, thus expanding the molecular design of N (+)-doped polycyclic aromatic hydrocarbons.
Review
Chemistry, Analytical
Ekaterina Khristunova, Elena Dorozhko, Elena Korotkova, Bohumil Kratochvil, Vlastimil Vyskocil, Jiri Barek
Article
Chemistry, Analytical
Julius Gajdar, Kristina Stafurova, Jiri Barek, Jan Fischer
Summary: A novel retractable-pen-based renewable silver amalgam film electrode (RAE) was introduced for electrochemical sensing of electrochemically reducible compounds, offering good repeatability and low limit of quantification for environmental pollutant detection. This electrode utilizes mechanisms found in a common retractable ballpoint pen for mechanical renewal of the amalgam film.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Chemistry, Analytical
Jiri Barek
Summary: Critical evaluation of modern voltammetric/amperometric methods reveals that electrode passivation/fouling is a major obstacle in their practical applications for real sample analysis. Different strategies to minimize these issues are explored and compared for their potential and feasibility in laboratory settings.
Article
Biochemistry & Molecular Biology
Muhammad Saqib, Elena V. Dorozhko, Jiri Barek, Vlastimil Vyskocil, Elena I. Korotkova, Anastasiia V. Shabalina
Summary: In this study, a laser-reduced graphene oxide (LRGO) grid electrode was prepared in one step to achieve sensitive carbaryl determination, with enhanced electroactivity and sensitivity. The LRGO grid electrode can detect carbaryl concentration in fruit juices, showing potential for widespread applications.
Article
Chemistry, Analytical
Elena Dorozhko, Anna S. Gashevskay, Elena Korotkova, Jiri Barek, Vlastimil Vyskocil, Sergei A. Eremin, Evgeny Galunin, Muhammad Saqib
Summary: This study synthesized a hapten-protein conjugate with copper nanoparticles (Hap-Car-BSA@CuNPs) for the determination of carbaryl, and successfully developed a novel method for monitoring carbaryl residues in flour samples using an electrochemical immunosensor. The detection range was 0.8-32.3 μg/kg with a limit of detection of 0.08 μg/kg.
Article
Chemistry, Analytical
Sirajuddin, Zulfiqar Ali Tagar, Muhammad Anwar Ul Haq, Muhammad Raza Shah, Mujeeb-ur-Rehman, Syed Tufail Hussain Sherazi, Jiri Barek, Muhammad Siddique Kalhoro
Summary: Highly stable, small-sized, and evenly distributed solid mercury nanoparticles capped with ibuprofen were successfully used as the sensing element for voltammetric determination of low concentrations of acrylamide in aqueous solutions. The sensor exhibited good repeatability and a low limit of detection, making it suitable for practical applications.
Article
Chemistry, Analytical
Sofiia Tvorynska, Jiri Barek, Bohdan Josypcuk
Summary: This study presents a novel strategy for uric acid determination using highly stable flow biosensors and a four-electron reduction of consumed oxygen. The design of the biosensors allows for spatial separation of detection and biorecognition parts, resulting in accurate measurements of uric acid concentration. The immobilization strategy of enzymes significantly affects the performance of the biosensors, with physical adsorption of uricase to glassy carbon showing good sensitivity, stability, and repeatability.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Chemistry, Analytical
Alina V. Geraskevich, Anna N. Solomonenko, Elena V. Dorozhko, Elena I. Korotkova, Jiri Barek
Summary: This review presents the application of modern electrochemical sensors for detecting ROS in biological objects over the past decade. It discusses the sensors materials, modifiers, as well as the comparative characteristics, advantages, disadvantages, possibilities, and limitations of the sensors.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Georgios Bountas, Vlastimil Vyskocil, Bohumil Kratochvil, Alena Michalcova, Anastasios Economou, Jiri Barek
Summary: Nitrophenols are important environmental pollutants due to their genotoxic and ecotoxic properties. A novel silver porous electrode was successfully used for the determination of micromolar concentrations of 2-nitrophenol, 2,4-dinitrophenol, and 2,4,6-trinitrophenol.
Article
Chemistry, Analytical
E. Dorozhko, E. Kazachinskaia, Y. Kononova, A. Zaikovskaya, J. Barek, E. Korotkova, E. Kolobova, P. Sheveleva, M. Saqib
Summary: In this study, silver nanoparticles (AgNPs) were conjugated with immunoglobulins G (IgG) through a passive adsorption method. The composition and properties of freshly prepared (Ab@AgNPs) and aged (Ab@AgNP/Ag2SNPs) conjugates were investigated using various methods. The state of the AgNPs in the conjugates changed during storage, with the newly prepared Ab@AgNPs containing metallic silver and the aged Ab@AgNP/Ag2SNPs having a metallic core coated with Ag2S. The conjugates were successfully tested in an electrochemical immunoassay, offering potential for prolonged use in commercial test systems for immunological studies.
Article
Chemistry, Analytical
Aqsa Aijaz, Daim Asif Raja, Farooq-Ahmad Khan, Jiri Barek, Muhammad Imran Malik
Summary: A colorimetric assay based on branched polyethyleneimine-conjugated silver nanoparticles (PEI-AgNPs) has been developed for the on-spot detection of ciprofloxacin (CIP) in the environment. The method exhibits high sensitivity, selectivity, and efficiency for the quantification of CIP in a linear dynamic range of 0.1-200 μM, with a limit of detection (LOD) of 0.038 μM and limit of quantification (LOQ) of 0.12 μM. The proposed method is capable of detecting CIP in complex samples and outperforms UV-Vis spectroscopy and UPLC in terms of performance.
Review
Chemistry, Analytical
Muhammad Saqib, Anna N. Solomonenko, Jirf Barek, Elena V. Dorozhko, Elena I. Korotkova, Shojaa A. Aljasar
Summary: Graphene composites have great potential for the determination of carbamates pesticides by electrochemical methods, offering advantages such as high sensitivity, selectivity, rapid detection, and low limit of detection.
ANALYTICA CHIMICA ACTA
(2023)
Review
Electrochemistry
Jiri Barek, Petr Smejkal
Summary: The aim of this article is to show that modern voltammetric methods can still be useful in practical laboratories and to express ideas on what researchers and university teachers should do to initiate a renaissance of voltammetric methods in analytical laboratories.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Jiri Barek, Fabio Marques
Summary: This article provides an overview of the use of various types of amalgam electrodes for monitoring organic compounds. Amalgam electrodes, made by forming an amalgam between metal and liquid mercury, offer advantages such as a wide range of potential windows and high sensitivity. Different types of amalgam electrodes and their applications in determining organic compounds in various matrices are discussed. Metal solid amalgam electrodes are found to be promising alternatives to hanging mercury drop electrodes for electrochemical measurements.
MONATSHEFTE FUR CHEMIE
(2023)
Article
Chemistry, Analytical
Alba Civera, Sofiia Tvorynska, Maria Gamella, Rebeca M. Torrente-Rodriguez, Maria Pedrero, Patricia Galan-Malo, Luis Mata, Lourdes Sanchez, Jiri Barek, Jose M. Pingaron, Susana Campuzano, Maria D. Perez
Summary: A novel electrochemical bioplatform was developed for the determination of Pru du 6, one of the most abundant and allergenic almond proteins, in processed foods. The bioplatform combines the use of a sandwich immunoassay on magnetic beads with specific antibodies either unmodified or conjugated to horseradish peroxidase. The developed bioplatform showed good selectivity and sensitivity, with a detection limit of 0.12 ng mL-1 of Pru du 6. It could accurately determine Pru du 6 in raw dough and baked cookies with a protein concentration of 0.2 μg g-1, providing comparable results to ELISA technique.
MICROCHEMICAL JOURNAL
(2023)
