Chemical contaminants

Fri, 03/19/2021 - 10:02
Quinoline antimalarials cause drug-induced electrocardiographic QT prolongation, a potential risk factor for torsade de pointes. The effects of currently used antimalarials on the electrocardiogram (ECG) were assessed in pregnant women with malaria. Pregnant women with microscopy-confirmed parasitemia of any malaria species were enrolled in an open-label randomized controlled trial on the...
Fri, 03/19/2021 - 02:02
Due to the inadequate removal rates of drug residues in wastewater treatment plants (WWTP), the transition of these compounds into the environment has become a serious environmental problem for ecosystems and public health. In this study, occurrence, fate, and removal of widely consumed two antibiotics, ciprofloxacin (CIP) and sulfamethoxazole (SMX), selected from fluoroquinolone and sulfonamide...
Fri, 03/19/2021 - 00:00
Cordyceps fumosorosea, an insect pathogenic fungus, produces different toxins/secondary metabolites which can act as pest control agents. This study reports the extraction and characterization of crude mycelial extracts of C. fumosorosea isolate SP502 along with their bio-efficacy against Bemisia tabaci and Aphis craccivora. Fourier transform infrared spectroscopy, liquid chromatography, mass...
Fri, 03/19/2021 - 00:00
Food can be contaminated by various types of contaminants such as mycotoxins and toxic heavy metals. Therefore, it is very likely that simultaneous intake of more than one type of food contaminant by consumers may take place, which provides a strong rationale for investigating the combined toxicities of these food contaminants. Patulin is one of the most common food-borne mycotoxins, whereas...
Thu, 03/18/2021 - 16:00
Thailand is an agricultural country. However, agricultural productivity relies on the heavy use of herbicides, especially paraquat. Paraquat accumulation is emerging as a problem in an ever-growing portion of agricultural land. Paraquat residues are toxic to plants, animals, and aquatic organisms in the environment. Biological remediation is a process that can mitigate agricultural chemical...
Thu, 03/18/2021 - 10:02
ABSTRACT Periphytic biofilms have the potential to greatly influence the microbial production of the neurotoxicant monomethylmercury in freshwaters although few studies have simultaneously assessed periphyton mercury methylation and demethylation rates and the microbial communities associated with these transformations. We performed a field study on periphyton from a river affected by run-of-...
Thu, 03/18/2021 - 08:03
The use of whole citrus fruits in the food industry means that the valuable peel is used, but this may raise palatability or health concerns among consumers. The content of sugars, dietary fibre, redox compounds, lead, and cadmium was compared in citrus fruits (orange; pomelo; mandarin; lemon; key lime; and red, yellow, and green grapefruit). The pulp of all fruits contained significantly less...
Thu, 03/18/2021 - 06:13
Author(s): Ljilja Torović, Gorica Vuković, Nina Dimitrov The occurrence of pesticide residues in food and the consequent health risks attract considerable attention. The current study comprised 139 samples of fruit juice present on the Serbian market. Out of 69 pesticide active substances analysed by liquid chromatography tandem mass spectrometry with electrospray ionisation, 19 were detected,...
Thu, 03/18/2021 - 06:13
Author(s): Yu-Ting Hung, Yu-Tsung Lee, Baskaran Stephen Inbaraj, Kandi Sridhar, Bing-Huei Chen This study aims to determine toxic compounds polycyclic aromatic hydrocarbons (PAHs) and cholesterol oxidation products (COPs) in thin slices of dried pork as affected by different flavorings and roasting temperature treatments through employing a QuEChERS method coupled with gas chromatograph–tandem...
Thu, 03/18/2021 - 06:12
Author(s): Kan Shao, Zheng Zhou, Pengcheng Xun, Samuel M. Cohen Abundant epidemiological evidence has shown that there is a strong causal relationship between long-term exposure to inorganic arsenic (iAs) through drinking water and a few types of cancer (e.g., lung and bladder cancer). Traditionally, a linear low-dose extrapolation assumption was applied in risk assessment for iAs which resulted...
Thu, 03/18/2021 - 02:02
Abstract Purpose This study aimed to explore the phytoremediation potential of Salvia tiliifolia for cadmium (Cd)-contaminated soils and to understand the interactions in soil-Cd-plant systems. Methods We assessed the Cd tolerance and accumulation characteristics of S. tiliifolia grown in soils with 0, 5, 25, and 50 mg kg− 1 Cd for 3 months. We also analysed the changes in physicochemical...
Thu, 03/18/2021 - 00:00
The primary focus of our research was to obtain global gene expression data in baker’s yeast exposed to sub-lethal doses of quantum dots (QDs), such as green-emitting CdSe/ZnS and InP/ZnS, to reveal novel insights on their unique mechanisms of toxicity. Despite their promising applications, their toxicity and long-lasting effects on the environment are not well understood. To assess toxicity, we...
Wed, 03/17/2021 - 22:08
Journal of Applied Microbiology, Accepted Article. Aims to evaluate the mycoremediation of polychlorinated biphenyls (PCBs) by either single cultures or binary consortia of Pleurotus pulmonarius LBM 105 and Trametes sanguinea LBM 023.
Wed, 03/17/2021 - 16:00
During plant-based drinks production a significant amount of valuable by-products (BPs) is obtained. The valorization of BPs is beneficial for both the environment and the food industry. The direct incorporation of the fermented and/or ultrasonicated almond, coconut, and oat drinks production BPs in other food products, such as wheat bread (WB) could lead to the better nutritional value as well...
Wed, 03/17/2021 - 16:00
Macrofungi, which are also known as mushrooms, can produce various bioactive constituents and have become promising resources as lead drugs and foods rich in nutritional value. However, the production of these bioactive constituents under standard laboratory conditions is inefficiency due to the silent expression of their relevant genes. Coculture, as an important activation strategy that...
Wed, 03/17/2021 - 06:09
Author(s): Ha Ngo-Thanh, Trang Dam Thuy, Kazutomo Suzue, Wataru Kamitani, Hideaki Yokoo, Koji Isoda, Chikako Shimokawa, Hajime Hisaeda, Takashi Imai The consumption of dietary acrylamide (ACR), a carcinogen, results in the dysfunction of various organs and the immune system. However, the impact of ACR exposure on the progression of infectious diseases is unknown. This study investigated the...
Wed, 03/17/2021 - 06:07
LWT
Author(s): Kübra Akkurt, Burçe Ataç Mogol, Vural Gökmen Consumers tend to reduced-fat products recently due to health concerns, which create a need to design reduced-fat products either changing the recipes or the processes. In the last decade, baking was introduced to reformulated potato chips production to low-fat chips; however it might lead to higher acrylamide formation due to increased...
Tue, 03/16/2021 - 22:08
Journal of Basic Microbiology, EarlyView. The study investigated the characteristics of aerobic degradation of tetrabromobisphenol A (TBBPA) by Irpex lacteus F17 (I. lacteus F17) under four different cometabolic substrates (phenol, glucose, sodium pyruvate, and sodium citrate). The biodegradation of TBBPA by I. lacteus F17 could be enhanced via cometabolism, and glucose (8 g/L) was confirmed to...
Tue, 03/16/2021 - 16:00
Different types of post-translational modifications are present in bacteria that play essential roles in bacterial metabolism modulation. Nevertheless, limited information is available on these types of modifications in actinobacteria, particularly on their effects on secondary metabolite biosynthesis. Recently, phosphorylation, acetylation, or phosphopantetheneylation of transcriptional factors...
Tue, 03/16/2021 - 14:04
Sample pre-treatment plays an important role in sample analysis, which directly affects the accuracy and reliability of the results. In this work we studied the influence of three common sample pre-treatment methods (direct injection, microwave digestion and wet digestion) on the determination of lead (Pb) content of Chinese health-care wines by graphite furnace atomic absorption spectrometry (...
Tue, 03/16/2021 - 06:13
Author(s): Tasnia Sharin, Helina Gyasi, Kim L. Williams, Doug Crump, Jason M. O’Brien Concerns about the estrogenic properties of Bisphenol A (BPA) have led to increased efforts to find BPA replacements. 1,7-bis(4-Hydroxyphenylthio)-3,5-dioxaheptane (DD-70) and 4,4′-(hexafluoroisopropylidene) diphenol (bisphenol AF, BPAF) are two potential chemical substitutes for BPA; however, toxicity data for...
Tue, 03/16/2021 - 02:02
The lower basin of Coatzacoalcos River is one of the most polluted regions of the southern Gulf of Mexico. Organochlorine compounds, polybrominated diphenyl ethers, polycyclic aromatic hydrocarbons, and heavy metals have been registered in this region. In the present study, genotoxicity was evaluated in the blood of giant toads (Rhinella marina) from Coatzacoalcos’ rural and industrial zones, and...
Mon, 03/15/2021 - 22:09
Journal of Separation Science, Accepted Article. In this study, a new floating dispersive solid phase extraction method based on deep eutectic solvents has been developed in a home–made extraction device for the extraction of four tetracycline antibiotics from milk samples. In this approach, the sorbent (activated carbon) was dispersed in whole parts of solution with the aid of air stream and...
Mon, 03/15/2021 - 02:02
In this study, a higher metal ions-resistant bacterium, Stenotrophomonas rhizophila JC1 was isolated from contaminated soil in Jinchang city, Gansu Province, China. The Pb2+ (120 mg/L) and Cu2+ (80 mg/L) removal rate of the strain reached at 76.9% and 83.4%, respectively. The genome comprises 4268161 bp in a circular chromosome with 67.52% G + C content and encodes 3719 proteins. The genome...
Sun, 03/14/2021 - 06:08
Author(s): Sondes Melliti Ben Garali, Inès Sahraoui, Hiba Ben Othman, Abdessalem Kouki, Pablo de la Iglesia, Jorge Diogène, Céline Lafabrie, Karl B. Andree, Margarita Fernández-Tejedor, Kaouther Mejri, Marouan Meddeb, Olivier Pringault, Asma Sakka Hlaili This study investigates the effects of polycyclic aromatic hydrocarbons (PAHs) on two potentially toxic Pseudo-nitzschia hasleana and P. mannii...
Sun, 03/14/2021 - 05:02
Oxathiapiprolin is a novel chiral piperidine thiazole isooxazoline fungicide that contains a pair of enantiomers. An effective analytical method was established for the enantioselective detection of oxathiapiprolin in fruit, vegetable, and soil samples using ultraperformance liquid chromatography-tandem triple quadrupole mass spectrometry. The optimal enantioseparation was achieved on a Chiralpak...
Sat, 03/13/2021 - 08:05
by Paula Priscila Correia Costa, Stefanie Bressan Waller, Gilvan Ribeiro dos Santos, Fladimir de Lima Gondim, Daniel Silveira Serra, Francisco Sales Ávila Cavalcante, Florêncio Sousa Gouveia Júnior, Valdir Ferreira de Paula Júnior, Eduardo Henrique Silva Sousa, Luiz Gonzaga de França Lopes, Wesley Lyeverton Correia Ribeiro, Helena Serra Azul Monteiro We aimed at evaluating the anti-asthmatic...
Sat, 03/13/2021 - 06:15
Author(s): Changjian Li, Huimin Zhu, Changyan Li, He Qian, Weirong Yao, Yahui Guo Pesticide residues are one of the most important issues affecting food safety. In this review, the general situation of pesticide residues in fruits and vegetables based on the background of the Chinese fruit and vegetable industry is first described. On the basis of primary processing of agricultural products, the...
Sat, 03/13/2021 - 06:14
Author(s): Marjan Koushkestani, Samira Abbasi-Moayed, Forough Ghasemi, Vahideh Mahdavi, M. Reza Hormozi-Nezhad In this work, a colorimetric sensor array has been designed for the identification and discrimination of thiometon (TM) and phosalone (PS) as organophosphate pesticides and prothioconazole (PC) as a triazole pesticide. For this purpose, two different plasmonic nanoparticles including...
Sat, 03/13/2021 - 02:02
As a novel detection method of CuSO4, terahertz (THz) spectroscopy detection has great application prospects, but the terahertz detection with the tablet method has low sensitivity, and with the metamaterials has complicated manufacture. This work has proposed a high-sensitivity pesticide THz spectroscopic detection method with a novel metal grating. The metal grating was composed of a circular...
Sat, 03/13/2021 - 02:02
A β-cyclodextrin functionalised graphene oxide-grafted silica (β-CD@GO/SiO2) sorbent was synthesised and used as a solid-phase extraction (SPE) sorbent for the extraction of trace polycyclic aromatic hydrocarbons (PAHs) from fried food extract. The prepared β-CD@GO/SiO2 was characterised using Fourier transform infrared spectrometry (FT-IR) and elemental analysis (EA). Compared with graphene...
Fri, 03/12/2021 - 16:00
Prokaryotic tolerance to inorganic arsenic is a widespread trait habitually determined by operons encoding an As (III)-responsive repressor (ArsR), an As (V)-reductase (ArsC), and an As (III)-export pump (ArsB), often accompanied by other complementary genes. Enigmatically, the genomes of many environmental bacteria typically contain two or more copies of this basic genetic device arsRBC. To shed...
Fri, 03/12/2021 - 10:02
Within the landscape of globally distributed pathogens, populations differentiate via both adaptive and nonadaptive forces. Individual populations are likely to show unique trends of genetic diversity, host-pathogen interaction, and ecological adaptation. In plant pathogens, allopatric divergence may occur particularly rapidly within simplified agricultural monoculture landscapes. As such, the...
Fri, 03/12/2021 - 08:04
by Iliana Julieta Cortese, María Lorena Castrillo, Andrea Liliana Onetto, Gustavo Ángel Bich, Pedro Darío Zapata, Margarita Ester Laczeski Plant growth-promoting bacteria (PGPB) are a heterogeneous group of bacteria that can exert beneficial effects on plant growth directly or indirectly by different mechanisms. PGPB-based inoculant formulation has been used to replace chemical fertilizers and...
Fri, 03/12/2021 - 06:09
Author(s): Zhe-Yu Yang, Wei-Liang Chen It is well-known that exposure to polycyclic aromatic hydrocarbons (PAH) may cause adverse health impacts. However, there are few investigations assessing the association between PAH exposure and the nutritional status of the general population. Thus, the purpose of this investigation was to assess the correlation between PAH metabolites and nutritional...
Fri, 03/12/2021 - 06:08
Author(s): Wenxuan Dong, Gang Liu, Kanglei Zhang, Yun Tan, Hui Zou, Yan Yuan, Jianhong Gu, Ruilong Song, Jiaqiao Zhu, Zongping Liu Nuclear factor erythroid 2-related factor 2 (Nrf2) is a nuclear transcription factor of great concern which is widely involved in physiological and pathological processes of the organism, but the role and regulatory mechanism of Nrf2 in kidney exposed to cadmium (Cd)...
Fri, 03/12/2021 - 06:08
Author(s): Fasih Ullah Haider, Jeffrey A. Coulter, Sardar Alam Cheema, Muhammad Farooq, Jun Wu, Renzhi Zhang, Guo Shuaijie, Cai Liqun Sole biochar addition or microbial inoculation as a soil amendment helps to reduce cadmium (Cd) toxicity in polluted agricultural soils. Yet the synergistic effects of microorganisms and biochar application on Cd absorption and plant productivity remain unclear....
Fri, 03/12/2021 - 02:02
This work aims at isolating a fungal source for l-asparaginase production to be applied in reducing acrylamide levels in coffee beans at non-cytotoxic levels. An l-asparaginase-producing fungus was isolated from an agricultural soil sample and identified as Penicillium crustosum NMKA 511. A maximum l-asparaginase activity of 19.10 U/mL was obtained by the above-mentioned fungus when grown under...
Fri, 03/12/2021 - 02:02
Used oyster shells are considered a waste product of the seafood industry. Herein, we hypothesize that oyster shells can be used as a raw ingredient to synthesize effective sorbents. This study investigated the lead sorption ability of modified oyster shells [phosphoric-acid treated oyster shell (POS) and oyster shells with phosphoric acid (OS + P)] from water. XRD confirmed the presence of...
Fri, 03/12/2021 - 02:02
The aquatic environment is constantly exposed to chemical pollutants from agriculture and the urban environment. In this study, the effects of Bisphenol A, Naphthalene, and Butachlor on metabolic and antioxidant enzymes of goldfish were investigated during subacute exposure. The samples (n = 144, 100.97 ± 31.47 g) were distributed randomly in 12 glass aquaria (70 L) with a stocking density of 12...
Thu, 03/11/2021 - 16:00
Contamination of agricultural soil by arsenic (As) is a serious menace to environmental safety and global food security. Symbiotic plant–microbe interaction, such as arbuscular mycorrhiza (AM), is a promising approach to minimize hazards of As contamination in agricultural soil. Even though the potential of AM fungi (AMF) in redeeming As tolerance and improving growth is well recognized, the...
Thu, 03/11/2021 - 16:00
Cadmium (Cd) pollution in soils is an increasing problem worldwide, and it affects crop production and safety. We identified Cd-tolerant and -sensitive cultivars by testing 258 accessions of Medicago truncatula at seedling stage, using the relative root growth (RRG) as an indicator of Cd tolerance. The factorial analysis (principal component analysis method) of the different growth parameters...
Thu, 03/11/2021 - 14:04
This study developed an in-field analytical technique for food samples by integrating filtration into a surface-enhanced Raman spectroscopy (SERS) microchip. This microchip embedded a filter membrane in the chip inlet to eliminate interfering particulates and enrich target analytes. The design and geometry of the channel were optimised by finite-elemental method (FEM) to tailor variations of flow...
Thu, 03/11/2021 - 00:00
Multiplex polymerase chain reaction (mPCR) is increasingly being used to diagnose infections caused by respiratory pathogens in pediatric inpatient facilities. mPCR assays detect a broader array of viruses, with higher specificity and sensitivity and faster turnaround than previous assays. We adapted the FilmArray Respiratory Panel (FA-RP) for diagnosing respiratory infections. FA-RP is an in...
Wed, 03/10/2021 - 06:10
Author(s): Zahra Sarlak, Kianoush Khosravi-Darani, Milad Rouhi, Farhad Garavand, Reza Mohammadi, Mohammad Reza Sobhiyeh Organophosphorus pesticides (OPPs) are widely used to control agricultural and domestic pests. Exposure to OPP residues poses serious health threats to human health through consumption of contaminated foods and water. Therefore, it is required to remove the OPP residues from...
Wed, 03/10/2021 - 06:10
Author(s): Mogos Girmatsion, Abdu Mahmud, Bereket Abraha, Yunfei Xie, Yuliang Cheng, Hang Yu, Weirong Yao, Yahui Guo, He Qian The use of antibiotics as veterinary drugs is a significant practice to maintain the well-being of farmed animals. Meanwhile, ethical violations committed during the application of the drugs by animal producers have become a major reason for contamination of animal...
Wed, 03/10/2021 - 06:09
Author(s): Guozheng Zhao, Binhua Zhou, Xiuwen Wang, Jian Shen, Bo Zhao Based on the successful synthesis of mercaptomethamidophos as a substrate, a novel nanogold/mercaptomethamidophos multi-residue electrochemical biosensor was designed and fabricated by combining nanoscale effect, strong Au−S bonds as well as interaction between acetylcholinesterase (AChE) and mercaptomethamidophos, which can...
Wed, 03/10/2021 - 02:02
Application of organics in soil can reduce uptake of arsenic (As) in food crops grown on soil spiked with As. However, the results may be different if the crop is grown with As-contaminated irrigation water. In this study, a modest initiative has been undertaken to assess the organo-arsenic equilibria using the fulvic and humic extracted from paddy husk (PH), vermicompost (VC), and soil. The...
Tue, 03/09/2021 - 16:00
Edwardsiella tarda is a facultative intracellular pathogen in humans and animals. There is no effective way except vaccine candidates to eradicate intracellular E. tarda. In this study, four derivatives of marine peptide-N6NH2 were designed by an introduction of unnatural residues or substitution of natural ones, and their intracellular activities against E. tarda were evaluated in macrophages...
Tue, 03/09/2021 - 10:04
In the metallophilic beta-proteobacterium Cupriavidus metallidurans, the plasmid-encoded Czc metal homeostasis system adjusts the periplasmic zinc, cobalt and cadmium concentration, which influences subsequent uptake of these metals into the cytoplasm. Behind this shield, the PIB2-type APTase ZntA is responsible for removal of surplus cytoplasmic zinc ions, thereby providing a second level of...

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