Chemical contaminants

Tue, 06/08/2021 - 06:16
Author(s): Huijie Chen, Peng Li, Ziqiang Shen, Jinliang Wang, Lei Diao Cadmium (Cd) is a ubiquitous environmental pollutant of increasing worldwide concern to both humans and animals. Selenium yeast (Se-Y) is an organic selenium source that has been shown an advantage in antagonizing Cd-induced liver necroptosis in chicken. Herein, we described the discovery path of Se-Y antagonism in Cd-induced...
Tue, 06/08/2021 - 06:16
Author(s): Jintao Gao, Xinxin Ye, Xiaoyue Wang, Yuji Jiang, Dechen Li, Yibing Ma, Bo Sun Cadmium (Cd), chromium (Cr), lead (Pb), mercury (Hg) and arsenic (As) are potent toxicants to human health via dietary intake. It is imperative to establish accurate soil thresholds based on soil-plant transfer models and food safety standards for safe agricultural production. This study takes rice genotypes...
Tue, 06/08/2021 - 04:04
Sixteen metabolites, including seven C7-alkylated salicylaldehyde derivatives (1–7) and nine prenylated indole alkaloids (8–16), three of which are new, namely, asperglaucins A and B (1 and 2) and neoechinulin F (8), were separated from the endolichenic fungus Aspergillus chevalieri SQ-8. Asperglaucin A (1) represents an unusual phthalide-like derivative with a benzo[c]thiophen-1(3H)-one scaffold...
Tue, 06/08/2021 - 02:03
Polycyclic aromatic hydrocarbons (PAHs), originating from anthropogenic and natural sources, are highly concerned environmental pollutants. This study investigated the impact of two model PAHs (pyrene and phenanthrene) on bacterial community succession in the seagrass meadows sediment in a lab-scale microcosm. Halophila ovalis sediment slurry microcosms were established, one group was placed as a...
Tue, 06/08/2021 - 02:02
A rapid, simple, and sensitive method of detecting veterinary drug residues in animal food sources, including poultry and pork, was developed and validated. The method was optimized for over 155 veterinary drugs of 21 different classes. Sample pretreatment included a simple solid-liquid extraction step with 0.2% formic acid-acetonitrile-water and a purification step with a PRiME HLB (hydrophile-...
Mon, 06/07/2021 - 06:10
Author(s): Delia Castilla-Fernández, David Moreno-González, Marcos Bouza, Andrea Saez-Gómez, Evaristo Ballesteros, Juan F. García-Reyes, Antonio Molina-Díaz A novel sample treatment approach based on a modified QuEChERS method was evaluated for the simultaneous determination of veterinary drug and pesticide residues in salmon in this work. To improve the QuEChERS performance, Enhanced Matrix...
Sun, 06/06/2021 - 06:09
Author(s): Panyang He, Yaojun Zhang, Xiaomin Zhang, Hao Chen The transformation of geopolymers into zeolite materials for use as bulk-type adsorbents is an outstanding strategy for water pollution control. However, only sodium ion (Na+)-type zeolites can be typically obtained from geopolymers, which limits their variety. In this study, Li-ABW zeolite (Li-ABW), K–F zeolite (K–F), and phillipsite,...
Sun, 06/06/2021 - 06:09
Author(s): Daniel Martín-Vertedor, Antonio Fernández, Marta Mesías, Manuel Martínez, Elisabet Martín-Tornero Californian-style processes are widely applied to the elaboration of black ripe olives in the table olive industry. During this procedure, a carcinogenic contaminant known as acrylamide is generated in thermal oxidation. The content of this compound can be modified according to the stage...
Sun, 06/06/2021 - 06:08
Author(s): Katarina Baralić, Katarina Živančević, Dragica Jorgovanović, Dragana Javorac, Jelena Radovanović, Tamara Gojković, Aleksandra Buha Djordjevic, Marijana Ćurčić, Zoran Mandinić, Zorica Bulat, Biljana Antonijević, Danijela Đukić-Ćosić Linkage between bis(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), and bisphenol A (BPA) co-exposure and type 2 diabetes mellitus (T2DM), as well...
Sun, 06/06/2021 - 04:03
Here, we prepared a series of novel osthole-type ester derivatives modified in the lactone ring of osthole, which is isolated from Cnidium monnieri. The positions of H-3 and H-4 of the representative compound 4z were determined by a 1H–1H COSY spectrum. By opening the lactone ring of osthole, the double bonds at the C-3 and C-4 positions of diol 3 and esters 4a–4z, 4a′, and 4b′ were still...
Sun, 06/06/2021 - 02:02
A novel sensitive method for simultaneous determination of 19 antibiotics and 19 anthelmintics in edible fungi using QuEChERS-UHPLC-MS/MS method was established. For every 10.0 g sample, 20 mL of acetonitrile with 2% acetic acid and 1.2 g sodium acetate were used for extraction, followed by 6.0 g anhydrous MgSO4 for dehydration, and 50 mg anhydrous MgSO4+10 mg PSA for purification. The optimized...
Sat, 06/05/2021 - 22:10
Journal of Separation Science, Accepted Article. Endocrine disrupting chemicals are chemicals that interfere with any aspect of the endocrine system. Several natural and synthetic chemicals including pesticides have been identified as endocrine disruptors, which potentially inhibit the reproductive activity of the hormonal system. The pervasive occurrence with trace level concentrations and...
Sat, 06/05/2021 - 18:02
Exposure through arsenic-contaminated air and food caused by the burning of coal is a major environmental public health concern in Guizhou Province of China. Previous studies have shown that immunological dysfunction is involved in the pathogenesis and carcinogenesis of arsenic; however, knowledge regarding effective prevention measures have not been fully examined. The effect of Ginkgo biloba...
Sat, 06/05/2021 - 08:05
by Jiayou Liu, Jie Zhang, Sun Ha Kim, Hyun-Sook Lee, Enrico Marinoia, Won-Yong Song Brassica rapa is an important leafy vegetable that can potentially accumulate high concentrations of cadmium (Cd), posing a risk to human health. The aim of the present study was to identify cadmium detoxifying molecular mechanisms in B. rapa using a functional cloning strategy. A cDNA library constructed from...
Sat, 06/05/2021 - 06:15
Author(s): Tichaona Sagonda, Muhammad Faheem Adil, Shafaque Sehar, Adeela Rasheed, Heren Issaka Joan, Younan Ouyang, Imran Haider Shamsi Due to its immense capability to concentrate in rice grain and ultimately in food chain, cadmium (Cd) has become the cause of an elevated concern among agriculturists, scientists and the environmental activists. Symbiotic association of Piriformospora indica (P...
Sat, 06/05/2021 - 02:03
A multiresidue method was developed and validated for the simultaneous determination of eight synthetic pyrethroids and hexaconazole fungicide residues in curry leaves. The method involves extraction of leaf sample with ethyl acetate, purified by dispersive SPE with primary secondary amine and graphitized carbon black. The gas chromatography-electron capture detector (GC-ECD) used for residue...
Fri, 06/04/2021 - 06:09
Author(s): Yue Teng, An Yu, Yi-Miao Tang, Zi-Yang Jiang, Wen-Jie Guan, Zhi-Shuai Li, Hong-Yan Yu, Lu-Yi Zou Hyperaccumulators store metals in the vacuoles of leaf cells. To investigate the role of vacuolar compartmentalization in Cd accumulation, chelation and induced antioxidation, we quantified the amounts of total cadmium (Cd), Cd2+, glutathione (GSH) and reactive oxygen species (ROS) in leaf...
Fri, 06/04/2021 - 06:08
Author(s): Jorge Castro-Bedriñana, Doris Chirinos-Peinado, Elva Ríos-Ríos, María Machuca-Campuzano, Elvis Gómez-Ventura The mining-metallurgical industry in the central Andes of Peru is a source of lead (Pb) and cadmium (Cd) contamination in milk, and there are no studies on the impact of their ingestion. Using flame atomic absorption spectrometry, we quantified the concentration of these metals...
Fri, 06/04/2021 - 04:03
The worldwide expansion of chikungunya virus (CHIKV) into tropical and subtropical areas in the last 15 years has posed a currently unmet need for vaccines and therapeutics. The E2-E1 envelope glycoprotein complex binds receptors on the host cell and promotes membrane fusion during CHIKV entry, thus constituting an attractive target for the development of antiviral drugs. In order to identify...
Fri, 06/04/2021 - 02:03
Concentrations of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) were measured in 23 seafood species widely consumed by the Korean population in the periods of 2005–2007, 2010–2011, and 2015–2017. The Σ82PCB (sum of 82 PCB congeners) and Σ19PBDE (sum of 19 PBDE congeners) concentrations in the seafood samples of 2015–2017 were 0.06–6.69 ng/g wet weight and 0.01–1.60 ...
Fri, 06/04/2021 - 02:03
Methylmercury (MeHg) is a toxic and bioaccumulative organo-metallic compound that is naturally produced in many ecosystems. Organisms that occupy the lower trophic positions in food webs may be key factors in the assessment of MeHg biomagnification between ecosystems. Here we present a review of the peer-reviewed literature examining MeHg bioaccumulation in freshwater invertebrates, focused...
Fri, 06/04/2021 - 00:00
Nanoparticles with high reactivity can be applied as amendments to remediate soil metal contaminations by immobilizing toxic elements. Nano-oxides of Fe have been studied but Al and Ti nano-oxides have not been tested for their remediation capacity of toxic metals. The potential of synthesized iron (Fe-O), aluminum (Al-O), and titanium (Ti-O) nano-oxides for stabilizing Cd, Pb, and Zn in mine...
Thu, 06/03/2021 - 02:03
The growth of edible crops on land that is highly polluted with potentially toxic elements is prohibited in many developed countries, but the growth of fiber or energy crops may be permitted. Here, we have evaluated metal immobilization in a maize field polluted with cadmium (Cd) and lead (Pb) to determine the thresholds of soil CaCl2-extractable Cd and Pb and to assess management options...
Wed, 06/02/2021 - 14:06
The occurrence of pesticide residues in bananas imported from Ecuador and the Philippines into Saudi Arabia was investigated. Eighty-seven banana samples were purchased from various supermarkets around the country. The conventional QuEChERS method was used to extract 294 pesticides in whole bananas and the analysis was carried out using LC-MS/MS and GC-MS/MS. In total, nine pesticides were...
Wed, 06/02/2021 - 14:06
Probabilistic exposure and risk assessment of chemical hazards in the diet have increasingly gained ground in recent years as a pragmatic approach for the approximation of reality. This work presents the outcomes of a project which aimed at applying probabilistic techniques for basic modelling of chronic dietary exposure to food contaminants following EFSA guidance. These techniques, based on...
Wed, 06/02/2021 - 06:09
Author(s): Benyang Wu, Xiaoyan Chai, Aiming He, Zhen Huang, Sheng Chen, Pingfan Rao, Lijing Ke, Leiwen Xiang Acrylamide has a variety of toxicities, including carcinogenicity, and can be present in food via the Maillard reaction in processing of certain foods. Previous studies have demonstrated that co-existing Maillard reaction products (MRPs) ameliorated acrylamide-induced abnormal...
Wed, 06/02/2021 - 06:08
Author(s): Mei Zhou, Luyao Li, Biyun Chen, Shuya Pan, Wei Tu, Yaxuan Hou, Panpan Chen, Rodolfo Rochín Hernández, Xue Zhou Circular RNAs (circRNAs) have been demonstrated to play critical roles in the pathogenesis of human cancers and carcinogenesis of several environmental pollutants. Nevertheless, the function of circRNAs in cadmium carcinogenesis is unclear. circ-SHPRH is down-regulated in many...
Wed, 06/02/2021 - 06:08
LWT
Author(s): Antonio José Pérez-López, Luis Noguera-Artiaga, Santiago López-Miranda González, Pablo Gómez-San Miguel, Borja Ferrández, Ángel Antonio Carbonell-Barrachina Acrylamide is carcinogenic for humans. Foods rich in carbohydrates cooked at high temperatures have a high content of this substance. Potatoes are one of the most consumed foods in the world and French fries are one of their most...
Wed, 06/02/2021 - 02:02
A wide range solubility of water is the main cause of its contamination by variety of inorganic/organic pollutants and hence needs decontamination using various porous materials. It is needed and still is a challenging task of time to develop porous materials like metal organic frameworks for the said purpose. In this study, we report sorptive removal and photo-catalytic degradation of methylene...
Tue, 06/01/2021 - 12:01
Background Approximately one-third of cases of cardiovascular implantable electronic device (CIED) infection present as CIED lead infection. The precise transesophageal echocardiographic (TEE) definition and characterization of “vegetation” associated with CIED lead infection remain unclear. Methods We identified a sample of 25 consecutive cases of CIED lead infection managed at our institution...
Tue, 06/01/2021 - 12:01
Since the turn of the 21st century, during which White mortality has been rising, there has been a sharp increase in only 3 causes of death: drug use, alcohol use, and suicide. Because all 3 of these causes conjure notions of anguish and hopelessness, they have been conceptualized as a collective “deaths of despair” phenomenon. Simon and Masters (Am J Epidemiol. 2021;190(6)1169-1171) challenge...
Tue, 06/01/2021 - 06:25
Author(s): Guangyu Lu, Qi Chen, Yuping Li, Yuting Liu, Yuying Zhang, Yujia Huang, Lei Zhu Antibiotic residues (ARs) in food of animal origin are of worldwide concern, particularly in China, the world’s largest producer and consumer of antibiotics. Aiming to provide a reference for the use of antibiotics in dairy cows, for supervision and management departments in the detection of related...
Tue, 06/01/2021 - 06:21
Author(s): Melasinee Laosuwan, Choosak Poonsawat, Rodjana Burakham, Supalax Srijaranai, Siriboon Mukdasai A novel liquid colorimetric sensor based on deep eutectic solvent (DES) was developed for the preconcentration and detection of Pb2+ in fruit juice, milk and cereal samples. The colorimetric probe was simply fabricated by adding dithizone (DZ) into DES, prepared from choline chloride and...
Tue, 06/01/2021 - 02:04
Abstract In the past decades, the production of biopharmaceuticals has gained high interest due to its great sensitivity, specificity, and lower risk of negative effects to patients. Biopharmaceuticals are mostly therapeutic recombinant proteins produced through biotechnological processes. In this context, L-asparaginase (L-asparagine amidohydrolase, L-ASNase (E.C. 3.5.1.1)) is a therapeutic...
Tue, 06/01/2021 - 02:04
Heavy-metal pollution is a negative impact of municipal solid-waste landfills. The multiple pollution transport pathways (including leachate, runoff, and waste gas) and complex and co-existing potential pollution sources (such as agricultural activities) around landfills require a combination of different pollution assessment methods and source identification tools to address pollution...
Tue, 06/01/2021 - 02:02
Biochar-immobilized microorganism technology is an effective way to remove antibiotic contamination in aqueous solutions. In this study, the effect and mechanism of immobilization of Bacillus subtilis by honeysuckle residue–derived biochar for the removal of chlortetracycline (CTC) were investigated using corn straw biochar as a comparison. The biochar’s structural characteristics and properties...
Mon, 05/31/2021 - 22:10
Environmental Microbiology, Accepted Article. Polycyclic aromatic hydrocarbons (PAHs) and dioxin-like compounds, including sulfur, nitrogen and oxygen heterocycles, are widespread and toxic environmental pollutants. A wide variety of microorganisms capable of growing with aromatic polycyclic compounds are essential for bioremediation of the contaminated sites and the Earth's carbon cycle. Here,...
Mon, 05/31/2021 - 04:03
A dietary pesticide residue causes underestimated influences on body health. In this work, experimental mice were exposed to commonly used pesticides that cause insulin resistance, inflammation, and non-alcoholic fatty liver diseases. Alterations in intestinal flora were detected in the exposure groups. The abundance of the flora causing high endotoxin production was intensively increased and led...
Sun, 05/30/2021 - 06:10
Author(s): Dan Wu, Hezuo Liu, Yang Liu, Wei Wei, Qi Sun, Deliang Wen, Lihong Jia The adverse effects of bisphenol A (BPA) on learning and memory may be related with oxidative stress, but the mechanisms are unclear. This study aimed to investigate the mechanism of damaged learning and memory caused by BPA through inducing oxidative stress, as well as to explore whether alpha-lipoic acid (ALA) show...
Sun, 05/30/2021 - 00:00
Aflatoxin B1 (AFB1) is a potent carcinogenic mycotoxin that contaminates numerous crops pre- and post-harvest. To protect foods and feeds from such toxins without resorting to pesticides, the use of plant extracts has been increasingly studied. The most interesting candidate plants are those with strong antioxidative activity because oxidation reactions may interfere with AFB1 production. The...
Sun, 05/30/2021 - 00:00
Infection-controlled release of antibacterial agents is of great importance, particularly for the control of peri-implant infections in the postoperative phase. Polymers containing antibiotics bound via enzymatically cleavable linkers could provide access to drug release systems that could accomplish this. Dispersions of nanogels were prepared by ionotropic gelation of alginate with poly-L-lysine...
Sat, 05/29/2021 - 16:00
Plasmids carrying metal resistance genes (MRGs) have been suggested to be key ecological players in the adaptation of metal-impacted microbial communities, making them promising drivers of bio-remediation processes. However, the impact of metals on plasmid-mediated spread of MRGs through selection, plasmid loss, and transfer is far from being fully understood. In the present study, we used two-...
Sat, 05/29/2021 - 06:17
Author(s): Laëtitia Frat, Thomas Chertemps, Élise Pesce, Françoise Bozzolan, Matthieu Dacher, Rosario Planelló, Óscar Herrero, Lola Llorente, Didier Moers, David Siaussat Heavy metals, like many other chemical elements, are naturally present in the environment; however, the concentrations of these metals in various environmental matrices have increased through their intensive use in many human...
Fri, 05/28/2021 - 14:05
The unavoidable presence of acrylamide in foods has fuelled the search for a suitable food additive, one that can successfully mitigate dietary acrylamide levels without changing food quality or compromising the health of consumers. The purpose of this study was to investigate the effect of a sulphur-based additive and amino acid, methionine, on acrylamide reduction. Differential scanning...
Fri, 05/28/2021 - 14:05
A qualitative and quantitative liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed for the sensitive and exhaustive analysis of residues from triarylmethane dyes, triarylmethane-derivative dyes, phenothiazines, phenoxazines and xanthenes in aquaculture samples. For a wider and more robust detection of dye misuse on farms, other residue markers were also included the...
Fri, 05/28/2021 - 06:13
Author(s): Leilei Yu, Yaqi Yu, Yue Xiao, Fengwei Tian, Arjan Narbad, Qixiao Zhai, Wei Chen Recently, a bidirectional relationship between dietary lead (Pb) exposure and gut changes has been identified. Pb causes gut dysbacteriosis and destroys gut physiological homeostasis, causing a series of oxidative stress, immune-inflammatory reactions and increased permeability of the intestinal barrier. Pb...
Fri, 05/28/2021 - 06:09
Author(s): Yangyi Zhang, Shanqi Guo, Shuo Wang, Xiaojian Li, Dingkun Hou, Hongzheng Li, Lili Wang, Yong Xu, Baojie Ma, Haitao Wang, Xingkang Jiang Previous studies suggest that cadmium (Cd) is one of the causative factors of prostate cancer (PCa), but the effect of chronic Cd exposure on PCa progression remains unclear. Besides, whether long noncoding RNAs (lncRNAs) are involved in the regulation...
Fri, 05/28/2021 - 00:00
Description of a perpetrator’s eye colour can be an important investigative lead in a forensic case with no apparent suspects. Herein, we present 11 SNPs (Eye Colour 11-EC11) that are important for eye colour prediction and eye colour prediction models for a two-category reporting system (blue and brown) and a three-category system (blue, intermediate, and brown). The EC11 SNPs were carefully...
Thu, 05/27/2021 - 02:03
This study examined the antibacterial activity of the biological pesticide Liangguoan against Staphylococcus aureus and Escherichia coli as a potential replacement for chemical pesticide use in the fruit and vegetable industry. We measured the minimum inhibitory concentration and observed the changes in bacterial morphology, mortality, conductivity, nucleic acid content, and ATP content in...
Wed, 05/26/2021 - 22:12
Water Resources Research, Accepted Article. The use of hydro-meteorological forecasts in water resources management holds great promise as a soft pathway to improve system performance. Methods for generating synthetic forecasts of hydro-meteorological variables are crucial for robust validation of forecast use, as numerical weather prediction hindcasts are only available for a relatively short...

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