Chemical contaminants

Wed, 06/03/2020 - 03:49
Author(s): Jin Liu, Lingfeng Zeng, Siqi Zhuang, Chenyun Zhang, Yuchen Li, Jianlin Zhu, Wenchang Zhang Exposure to the heavy metal cadmium (Cd) in the environment is linked to adverse health. To fully understand the adverse effects of this important endocrine-disrupting compound (EDC) requires studies that address multigenerational effects and epigenetic mechanisms. The present study orally dosed...
Wed, 06/03/2020 - 03:41
BACKGROUND Pesticides are widely utilized worldwide to control undesirable life forms during the planting procedure in agriculture. But they can pollute the nature and jeopardize human wellbeing. Additionally, on account of high resistance and biological activity; pesticides are able to accumulate in living organs and lead to acute and long‐term negative effects along with toxicity. Milk and...
Wed, 06/03/2020 - 03:41
European hazelnut (Corylus avellana L.) is the major species of interest for nutritional uses within the Betulaceae family and its nuts are widely used throughout the world in the chocolate, confectionery and bakery industries. Recently his cultivation has been expanded in traditional producer countries as well as established in new places in the Southern Hemisphere, including Chile, South Africa...
Wed, 06/03/2020 - 03:40
Biochar was for the first time produced from Suaeda glauca. The immobilization of Pb and Cd by this biochar and pig manure biochar was examined in two types of soils by diethylene triamine pentaacetic acid (DTPA) extraction. Addition of biochars decreased DTPA extractable Pb and Cd in Fluvo-aquic soil with reduction rates being 11.3%–48.4% and 0.74%–64.9% compared with the control treatment. The...
Wed, 06/03/2020 - 03:40
Fourteen pesticides were screened and determined through quick, easy, cheap, effective, rugged, and safe (QuEChERS) extraction process combined with GC-MS/MS in arid agriculture soil. The aims of the current investigation were to account the occurrence of organochlorine (OCP) and organophosphates (OPP) pesticide residues as well as other groups of pyrethroids (PYRs), carbamates, and biopesticides...
Wed, 06/03/2020 - 03:39
Cadmium (Cd) is a widespread pollutant that is toxic to living organisms. Previous studies have identified certain WRKY transcription factors, which confer Cd tolerance in different plant species. In the present study, we have identified 29 Cd-responsive WRKY genes in Soybean [Glycine max (L.) Merr.], and confirmed that 26 of those GmWRKY genes were up-regulated, while 3 were down-regulated. We...
Wed, 06/03/2020 - 03:39
A number of metal hyperaccumulator plants, including nickel (Ni) hyperaccumulators, have been identified in the genus Noccaea. The ability to accumulate Ni in shoots varies widely among species and ecotypes in this genus; however, little is known about the molecular mechanisms underlying this intra- and inter-specific variation. Here, in hydroponic culture, we compared Ni accumulation patterns...
Wed, 06/03/2020 - 03:39
Rhizosphere microbiome significantly influences plant growth and productivity. Legume crops such as pea have often been used as a rotation crop along with rice cultivation in long-term conservation agriculture experiments in the acidic soils of the northeast region of India. It is essential to understand how the pea plant influences the soil communities and shapes its rhizosphere microbiome. It...
Wed, 06/03/2020 - 03:39
Cadmium, although not redox active is highly toxic. Yet, the underlying mechanisms driving toxicity are still to be characterized. In this study, we took advantage of the purple bacterium Rubrivivax gelatinosus strain with defective Cd2 +-efflux system to identify targets of this metal. Exposure of the ΔcadA strain to Cd2 + causes a decrease in the photosystem amount and in the activity of...
Wed, 06/03/2020 - 03:39
Antibiotic resistance and viral diseases are rising around the world and are becoming major threats to global health, food security, and development. One measure that has been suggested to mitigate this crisis is the development of new antibiotics. Here, we provide a comprehensive evaluation of the phylogenetic and biogeographic patterns...
Tue, 06/02/2020 - 03:42
Lead (Pb), a well‐known toxic metal, has a potential of adverse effects on human health. Selenium (Se) can reduce the toxicity caused by heavy metals. In this study, we investigated the protection mechanism of the purified Se‐enriched rice protein hydrolysates (SPHs‐2) on the Pb2+‐induced cytotoxicity. A Caco‐2 cell model was established to characterize the effect of SPHs‐2 on Pb2+ absorption in...
Mon, 06/01/2020 - 03:47
Author(s): Lingfei Ma, Yanfei Wang, Haipu Li, Fangyuan Peng, Bo Qiu, Zhaoguang Yang Monitoring neonicotinoid residues in grains is of significant interest for the proper assessment of pesticide exposure to human. The quick, easy, cheap, effective, rugged, and safe extraction method combined with dispersive liquid-liquid micro-extraction (QuEChERS-DLLME) was developed for extracting, purifying,...
Mon, 06/01/2020 - 03:39
BACKGROUND The use of pesticides during tea plant cultivation support agricultural production and prevents and controls pests, diseases, and weeds. It is of the utmost importance to balance pesticide application with tea quality, safety, and consumer health. The uptake of pesticides into plants may lead to the presence of residues that are hazardous to human health, especially for some foliar‐...
Mon, 06/01/2020 - 03:38
A soft coral-derived fungus Penicillium sp. among other isolates e high antibacterial, anti-yeast and cytotoxic activities. The fungus, Penicillium sp. MMA, isolated from Sarcphyton glaucoma, afforded nine diverse compounds (1–9). Their structures were identified by 1D and 2 D NMR and ESI–MS spectroscopic data as two alkaloids: veridicatol (1), aurantiomide C (2); one sesquiterpene, aspterric...
Sun, 05/31/2020 - 03:48
Author(s): Yuchen Zhu, Yinghua Luo, Guoyu Sun, Pengpu Wang, Xiaosong Hu, Fang Chen The inhibition effects of glutathione (GSH) on acrylamide (AA) in the asparagine/glucose model systems and cookies were investigated. The formation of AA was significantly inhibited by GSH addition in the model systems. The decreasing levels of AA were in the range of 38-86%, 57-82%, and 3-41% at 120, 140, and 160...
Sat, 05/30/2020 - 03:53
Author(s): Maria Alessia Schouten, Jessica Genovese, Silvia Tappi, Alessandra Di Francesco, Elena Baraldi, Manuela Cortese, Giovanni Caprioli, Simone Angeloni, Sauro Vittori, Pietro Rocculi, Santina Romani The aim of this research was to evaluate the reduction of acrylamide (AA) formation in potato chips applying innovative pre-treatments. Raw potato slices were subjected for 5 and 15 min to:...
Sat, 05/30/2020 - 03:51
Author(s): Long Wu, Weimin Zhang, Chen Liu, Mohamed F. Foda, Yongheng Zhu In this work, based on the strawberry-like SiO2/Ag nanocomposites (SANC) immersed filter paper, a newly surface-enhanced Raman scattering (SERS) substrate was constructed for the detection of acrylamide (AAm) in food products. To construct filter paper-based SANC (F-SANC) SERS substrates, SiO2 nanoparticles (SNP) were...
Sat, 05/30/2020 - 03:45
Sediment samples were taken from sediment adjacent to an urban river in Sheffield in Northern England that had suffered heavy metal pollution due to previous activity of the steel industry (between the 17th and 19th centuries). The most abundant heavy metals found in the samples were lead, chromium, nickel, arsenic and cobalt, with maximum concentrations of 412.80 mg kg‐1 25.232 mg kg‐1, 25.196...
Fri, 05/29/2020 - 03:51
by Kelsey Brown, Maina Mugoh, Douglas R. Call, Sylvia Omulo The use of veterinary antibiotics is largely unregulated in low-income countries. Consequently, food producers rarely observe drug withdrawal periods, contributing to drug residues in food products. Drug residues in milk can cause immunogenic reactions in people, and selectively favor antibiotic-resistant bacteria in unpasteurized...
Fri, 05/29/2020 - 03:42
Lake and adjoining river ecosystems are ecologically and economically valuable and are heavily threatened by anthropogenic activities. Determining the inherent capacity of ecosystems for polycyclic aromatic hydrocarbon (PAH) biodegradation can help quantify environmental impacts on the functioning of ecosystems, especially on that of the microbial community. Here, PAH biodegradation potential was...
Fri, 05/29/2020 - 03:41
Melanoidins, formed at the final stages of Maillard reaction (MR) present important physiological activities, but their structure and reaction pathways are largely unknown in real food systems. In the present work, these bioactive compounds derived from Brewers’ spent grain (BSG) with different roasting degrees were analyzed. Results showed that BSG could be considered a more important source of...
Fri, 05/29/2020 - 03:40
A dozen or so chemicals modify both cholesterol and copper metabolism. Ascorbic acid and cadmium, etc., inhibit copper metabolism and raise cholesterol. Calcium and clofibrate, etc., enhance copper and lower cholesterol. Perhaps the doses of dietary cholesterol and fructose in this experiment were too severe to permit fenofibrate to lower cholesterol in a manner similar to clofibrate. © 2020...
Fri, 05/29/2020 - 03:39
The effect of pulsed light (PL) on numerous important quality characteristics of pineapple juice was studied and compared with untreated and thermally pasteurised samples. The laboratory scale PL batch system used was operated with each three different voltages (1.8, 2.1, and 2.4 kV) and numbers of pulses (47, 94, and 187). Treatments with 2.4 kV and either 94 or 187 pulses (757/1479 J·cm−2)...
Fri, 05/29/2020 - 03:39
ABSTRACT Our understanding of environmental factors controlling prokaryotic community is largely hampered by the large environmental variability across spatial scales (e.g. trace metal contamination, nutrient enrichment and physicochemical variations) and the broad diversity of bacterial pre-exposure to environmental factors. In this article, we investigated the specific influence of copper (Cu...
Fri, 05/29/2020 - 03:38
This work examines polycyclic aromatic hydrocarbon (PAH) concentrations in yard trash at various stages of the yard trash management cycle of collection, stockpiling, grinding and screening into mulch, and composting. Total extractable PAH concentrations were measured in yard trash at various management stages from 10 locations in Florida. The concentrations of 16 PAH compounds in processed yard...
Fri, 05/29/2020 - 03:38
Multidrug resistance (MDR) transporters of the major facilitator superfamily (MFS) were previously believed to drive the extrusion of multiple antimicrobial drugs through the coupling to proton translocation. Here, we present the identification of the first Na+-coupled MFS-MDR transporter, MdrP, which also can achieve H+-coupled drug efflux independently of Na+. Importantly, we propose that MdrP...
Thu, 05/28/2020 - 03:52
Author(s): Sihui Liang, Ningge Jian, Jiankun Cao, Huayin Zhang, Jian Li, Qian Xu, Chunmin Wang In this study, polyaniline modified polyacrylonitrile nanofibers mat (PANI NFsM) was prepared as a novel adsorbent for the solid-phase extraction (SPE) of non-steroidal anti-inflammatory drug residues in meat or egg samples. The solvent extracts of samples were simply diluted with water to perform the...
Thu, 05/28/2020 - 03:51
Author(s): Mi Li, Hang Yu, Yuliang Cheng, Yahui Guo, Weirong Yao, Yunfei Xie A green synthesis method for nanoscale silver using β-cyclodextrin as both reducing agent and stabilizer was developed. β-cyclodextrin was used not only as a reducing agent but also a stabilizing agent for nano-silver, and is also an excellent detection substrate due to its special structure (inner hydrophobic and outer...
Thu, 05/28/2020 - 03:51
Author(s): Elena Bartkiene, Modestas Ruzauskas, Vadims Bartkevics, Iveta Pugajeva, Paulina Zavistanaviciute, Vytaute Starkute, Egle Zokaityte, Vita Lele, Agila Dauksiene, Michael Grashorn, Ludwig E. Hoelzle, Anara Mendybayeva, Raushan Ryshyanova, Romas Gruzauskas In this study, the presence of antibiotics (ANB) residues was evaluated in poultry meat purchased from German and Lithuanian markets....
Thu, 05/28/2020 - 03:51
LWT
Author(s): Daniel Martín-Vertedor, Nuno Rodrigues, Ítala M.G. Marx, Luís G. Dias, Ana C.A. Veloso, José Alberto Pereira, António M. Peres The study aimed to evaluate the effects of olive cultivar (cvs. Manzanilla Cacereña and Hojiblanca) and the sterilization intensity/time-period (F0 of 10–25 min at 121 ± 3 °C) on the formation of acrylamide in table olives and brine. Olive cultivar and thermal...
Thu, 05/28/2020 - 03:44
Background Iprodione has better control effect, but it is considered an endocrine disturbing chemical and it could inflict some serious damage to consumers. The garlic crop has three edible portions based on its growth stage, including the garlic, green garlic and garlic shoot. In this study, iprodione residue dissipation and distribution on these three edible portions were investigated, and...
Thu, 05/28/2020 - 03:43
Bacteriophage-derived endolysin enzymes play a critical role in disintegration of the host bacterial cell wall and hence have gained considerable attention as possible therapeutics for the treatment of drug-resistant infections. Endolysins can target both dividing and non-dividing cells and given the vital role peptidoglycan plays in bacterial survival, bacteria are less likely to modify it even...
Thu, 05/28/2020 - 03:42
Antimicrobial peptides (AMPs) have attracted more attention for their potential candidates for new antibiotic drugs. As a novel identified cathelicidin AMP from duck, dCATH owns broad-spectrum antimicrobial activities but with a noticeable toxicity. To explore dCATH-derived AMPs with reduced cell toxicity and improved cell selectivity, a series of truncated and tryptophan-replaced peptides of...
Wed, 05/27/2020 - 03:48
by Roberta M. O’Connor, Felix J. Nepveux V, Jaypee Abenoja, Gregory Bowden, Patricia Reis, Josiah Beaushaw, Rachel M. Bone Relat, Iwona Driskell, Fernanda Gimenez, Michael W. Riggs, Deborah A. Schaefer, Eric W. Schmidt, Zhenjian Lin, Daniel L. Distel, Jon Clardy, Timothy R. Ramadhar, David R. Allred, Heather M. Fritz, Pradipsinh Rathod, Laura Chery, John White Apicomplexan parasites cause severe...
Wed, 05/27/2020 - 03:46
Author(s): Taehoon Lee, Hyesung Park, Pradeep Puligundla, Gwi-Hee Koh, Jungro Yoon, Chulkyoon Mok This study was aimed to reduce the concentrations of benzopyrene (BaP) and acrylamide (ACR) in roasted coffee beans by corona discharge plasma jet (CDPJ). The initial concentrations of BaP and ACR in the beans were decreased by 53.6% and 32.0%, respectively, following CDPJ (20 kV DC/1.5 A) treatment...
Wed, 05/27/2020 - 03:46
Author(s): Ali Ranjbar Jafarabadi, Sakineh Mashjoor, Alireza Riyahi Bakhtiari, Catherine Jadot The present study investigated accumulation of petrogenic polycyclic aromatic hydrocarbons (∑39PAHs) in the livers and muscles of three coral-reef fish (50 specimens) from the Persian Gulf, Kharg Island (Iran), specifically Lethrinus microdon (n=18), Lutjanus argentimaculatus (n=17), and Scomberomorus...
Wed, 05/27/2020 - 03:45
Author(s): Kiran Yasmin Khan, Barkat Ali, Peter Joseph Stoffella, Xiaoqiang Cui, Xiaoe Yang, Ya Guo Cadmium (Cd) is an inauspicious abiotic traction that not only influences crop productivity and its growth parameters, but also has adverse effects on human health if these crops are consumed. Among crops, leafy vegetables which are the good source of mineral and vitamins accumulate more Cd than...
Wed, 05/27/2020 - 03:45
Author(s): Dipa Lalwani, Yuefei Ruan, Sachi Taniyasu, Eriko Yamazaki, Nirmal J.I. Kumar, Paul K.S. Lam, Xinhong Wang, Nobuyoshi Yamashita Bisphenol A (BPA) has been frequently found in surface waters worldwide, and its estrogenic effects in humans are well documented. Nevertheless, less is known about other bisphenol analogues (BPs), such as bisphenol S (BPS) and bisphenol F (BPF) which are...
Wed, 05/27/2020 - 03:37
In this study, the concentrations of 14 types of organochlorine pesticides (OCPs) and 7 types of polychlorinated biphenyls (PCBs) in four freshwater fish species (Ctenopharyngodon idella, Cyprinus carpio, Hypophthalmichthys molitrix and Hypophthalmichthys nobilis) collected from nine lakes in Anhui Province were determined. Among these contaminants, only hexachlorobenzene (HCB), heptachlor,...
Wed, 05/27/2020 - 03:37
This study assessed if the concentrations of methylmercury (MeHg) in predatory and non-predatory fish caught in the Upper Solimões River are safe for human consumption, according to the reference values established by the Joint FAO/WHO Expert Committee on Food Additives (JECFA). MeHg concentrations were evaluated in muscle of 5 predatory and 4 non-predatory fish species by gas chromatography with...
Wed, 05/27/2020 - 03:37
Abstract Aims This study aims to understand the mechanism by which grafting tomato (Solanum lycopersicum) onto Torubamu (Solanum melongena) reduces cadmium (Cd) accumulation in tomato. Methods Tomato plants were grafted onto Torubamu rootstocks, and both the un-grafted and grafted tomato plants were grown in the control soil and soil that contained 2.0 or 5.0 mg•kg−1 Cd for 30 d. Results...
Wed, 05/27/2020 - 03:36
Introduction:The aim of this study was to assess the relationship between polymorphisms of genes encoding enzymes involved in arsenic metabolism and urinary arsenic concentration in people occupationally exposed to arsenic.Materials and Methods:The data from 113 employers directly exposed to lead, cadmium, and arsenic in copper smelter in Legnica and Glogow were collected. Urinary arsenic...
Wed, 05/27/2020 - 03:36
Vacuolar processing enzymes (VPEs) play an important role in stress resistance and development of plants. Despite their diverse roles, little information is available in apple (Malus × domestic). This study firstly presents the genome-wide identification of VPE family genes in apple, resulting in 20 family members those are unevenly distributed across six out of the 17 chromosomes. Phylogenetic...
Wed, 05/27/2020 - 03:36
An antifungal lipodepsipeptide was obtained from cultures of the fungus Foliophoma fallens CF-236885. Its structure, elucidated by HRMS and NMR spectroscopy, contained Gly, Thr, Asn, β-Ala, Orn, Ala, two Ser residues, and 3-hydroxy-4-methylhexadecanoic acid. The absolute configuration of its amino acid residues was determined using Marfey’s analysis and J-based configuration...
Tue, 05/26/2020 - 03:52
Extracellular enzymes produced from Streptomyces have the potential to replace toxic chemicals that are being used in various industries. The endorsement of this replacement has not received a better platform in developing countries. In this review, we have discussed the impact of chemicals and conventional practices on environmental health, and the role of extracellular enzymes to replace these...
Tue, 05/26/2020 - 03:51
Cadmium (Cd) is highly toxic to the environment and humans. Plants are capable of absorbing Cd from the soil and of transporting part of this Cd to their shoot tissues. In Arabidopsis, the plasma membrane Heavy Metal ATPase 4 (HMA4) transporter mediates Cd xylem loading for export to shoots, in addition to zinc (Zn). A recent study showed that di-Cys motifs present in the HMA4 C-terminal...
Mon, 05/25/2020 - 03:47
Author(s): Yuming Hu, Yunpeng Shen, Jianlong Wang Antibiotic fermentation residues has been classified as “Hazardous Waste” in China since 2008, but its effective disposal and resource recovery remains a problem. Due to its high content of bioavailable organic matters, antibiotic fermentation residues can be utilized as a potential candidate for biohydrogen production. However, the complex matrix...
Mon, 05/25/2020 - 03:45
Author(s): Eloy Navarro-León, Francisco Javier López-Moreno, Juan José Rios, Begoña Blasco, Juan Manuel Ruiz An optimal uptake of mineral elements is crucial to ensure both crop yield and quality. The use of biostimulants is taking relevance to improve the nutrition of crops. Sulphur (S) is one of the elements with great potential within biostimulants. Furthermore, soil contamination by heavy...
Sun, 05/24/2020 - 03:44
Author(s): Houjun Liu, Lei Yang, Na Li, Chongjun Zhou, Huan Feng, Jinfeng Yang, Xiaori Han Cadmium (Cd) pollution is a worldwide concern due to its biotoxicity. Because Cd and Fe are closely associated during plant photosynthesis, this study aims at investigating the mechanism governing Cd toxicity during photosynthetic primary reaction in rice by adjusting Fe concentration. The results show that...
Sun, 05/24/2020 - 03:44
Author(s): Aixue Zhu, Pengyan Liu, Yichao Gong, Muyuan Li, Jianbing Su, Guisui Liu Tetrabromobisphenol A (TBBPA) in water from Xiongan New Area was determined by gas chromatography-mass spectrometry (GC-MS), simultaneous with its risk assessment. The optimal extraction conditions, derivatization factors (such as derivation reagent amount, derivatization time and temperature), and dissolution...

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