Chemical contaminants

Sat, 09/21/2019 - 03:32
Author(s): Krešimir Mastanjević, Brankica Kartalović, Jelena Petrović, Nikolina Novakov, Leona Puljić, Dragan Kovačević, Marko Jukić, Jasmina Lukinac, Kristina MastanjevićAbstractThe aim of this study was to determine the content of 16 polycyclic aromatic hydrocarbons (PAHs) in the traditional dry fermented sausage Slavonska kobasica. Smoking was conducted in a traditional smokehouse (two and...
Sat, 09/21/2019 - 03:32
Author(s): Jiehong Zhou, Zhiying Yang, Kai Li, Xiaohua YuAbstractIn recent years, labor-intensive agricultural products from developing countries have exhibited inferior performance in international trade due to quality and safety incidents, among which pesticide residue is a major issue. Aiming to improve food quality and safety in the context of cooperatives, we introduced three categories of...
Sat, 09/21/2019 - 03:32
Author(s): Melyssa Kmecick, Mariliza Cristine Vieira da Costa, Ciro Alberto de Oliveira Ribeiro, Claudia Feijó Ortolani-MachadoAbstractPerfluorooctanoic acid (PFOA) and cadmium (Cd) are persistent environmental pollutants, bioaccumulative, and capable of crossing the placental barrier. There is evidence of developmental toxicity induced by PFOA and Cd, but their effects on early development are...
Sat, 09/21/2019 - 03:32
Author(s): Fereshteh Satarian, Taher Nejadsattari, Farzam Vaziri, Seyed Davar SiadatAbstractBackgroundPseudomonas aeruginosa (P. aeruginosa) is an opportunistic mucosal human pathogen that naturally releases outer membrane vesicles (OMVs) in different environments, as do other Gram-negative bacteria. The intestinal tract infections caused by P. aeruginosa increase the risk of respiratory...
Sat, 09/21/2019 - 03:32
Author(s): Gamal A Elmowalid, Marwa I Abd El-Hamid, Ashraf M Abd El-Wahab, Mohammad Atta, Gamal Abd El-Naser, Adel M AttiaAbstractAdministration of antibiotics as feed additives in broilers resulted in prompting of some undesirable effects such as the rising emergence of multi-drug resistant (MDR) bacteria, so scrutinizing for new alternatives like herbs is the up to date task for global health....
Sat, 09/21/2019 - 03:32
Author(s): Wei-Jie Xue, Chang-Bo Zhang, Pei-Pei Wang, Chang-Rong Wang, Yong-Chun Huang, Xin Zhang, Zhong-Qi LiuAbstractAltering Cd chemical form is one of the mechanisms to alleviate Cd toxicity in rice plant. Field experiments were carried out in this study to investigate the potential of rice vegetative organs in altering Cd into insoluble chemical forms in the natural environment. Experimental...
Sat, 09/21/2019 - 03:32
Author(s): Shuang Song, Xin Zhou, Chenqi Guo, Haiyan Zhang, Tao Zeng, Yidong Xie, Jinsong Liu, Chaofei Zhu, Xingrong SunAbstractTypical thermal processes are common sources of polychlorinated, polybrominated and mixed polybrominated/chlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs, PBDD/Fs, and PBCDD/Fs); however, very few reports have investigated their coemission. To clarify the...
Sat, 09/21/2019 - 03:32
Author(s): Huijuan Song, Liang Peng, Zhiyi Li, Xiaozhou Deng, Jihai Shao, Ji-dong GuAbstractThe paddy-crusts (PCs) play an important pole in the transformation and transfer of heavy metal in paddy. Different PCs were collected from paddy fields whose soils contained cadmium (Cd) at four concentration levels (0.61, 0.71, 1.53, and 7.08 mg/kg) in Hunan Province, China P.R. at Sep 2017. This metal's...
Sat, 09/21/2019 - 03:32
Author(s): Congcong Zhang, Xiaoxiu Li, Zhiguang ZhouAbstractThe mass concentrations, toxic equivalent quantity (TEQ) concentrations and congener profiles of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in the stack flue gas and ambient air of municipal solid waste incinerator (MSWI) were monitored in this study to evaluate the levels, emission characteristics, seasonal variation...
Sat, 09/21/2019 - 03:31
Author(s): Hafida Baoune, Juan Daniel Aparicio, Adrian Acuña, Aminata Ould El Hadj-khelil, Leandro Sanchez, Marta Alejandra Polti, Analia AlvarezAbstractRestoring polluted sites by petroleum hydrocarbons is a challenge because of their complexity and persistence in the environment. The main objective of the present study was to investigate the performance of plant-actinobacteria system for the...
Sat, 09/21/2019 - 03:31
Author(s): Jiajun Wen, Zhongwu Li, Ninglin Luo, Mei Huang, Xiang Ding, Xianrong Bu, Ming ChenAbstract:Soil organic matter (SOM) could immobilize most of metals, but it could promote the migration of a small part of metals in special environments. Heavy rainfall and drought makes wetlands affected by the alternation of drought and flood, altering the mobility of metals. Few studies have been...
Sat, 09/21/2019 - 03:31
Author(s): Lixian Yao, Manus P. Carey, Jiawen Zhong, Cuihua Bai, Changmin Zhou, Andrew A. MehargAbstractRoxarsone (ROX), an organoarsenic feed additive, and its metabolites, can be present in animal manure used to fertilize rice. Rice is prone to absorb arsenic, and is subject to straighthead disorder, which reduces rice yield and is linked with organic arsenic compounds. This study aims to...
Sat, 09/21/2019 - 03:31
Author(s): Feng Li, Yang Zheng, Jiang Tian, Fei Ge, Xingwang Liu, Yixin Tang, Chuang FengAbstractThis study investigated the effects of Cupriavidus sp. strain Cd02-mediated increase on biosorption and bioprecipitation of Cd2+ during the 144-h cultivation time as well as evaluated effectivenesses of changing soil pH and bioavailability of cadmium after bioaugmentation of strain Cd02 into Cd-...
Sat, 09/21/2019 - 03:31
Author(s): Nassim Zeinali, Ibukun Oluwoye, Mohammednoor Altarawneh, Bogdan Z. DlugogorskiAbstractPolychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) remain of particular concern owing to their extensive toxicity towards health and accumulation in the environment. Atmospheric oxidation (by ambient oxygen molecules) of this class of persistent environmental pollutants has little to...
Sat, 09/21/2019 - 03:31
Author(s): HuaWei Fang, WuShuang Li, ShuXin Tu, YongZhen Ding, RuiGang Wang, Christopher Rensing, YuanPing Li, RenWei FengAbstractLeaf vegetables have strong capabilities to take up cadmium (Cd) compared to other vegetable varieties. Until now, the differences in Cd uptake and accumulation by leaf vegetables from different families and genera and the related health risks were unknown. To remedy...
Sat, 09/21/2019 - 03:31
Author(s): B.F. Yan, C. Nguyen, O.S. Pokrovsky, F. Candaudap, C. Coriou, S. Bussière, T. Robert, J.Y. CornuAbstractThis study aims to characterize the response of durum wheat to different concentrations of Cd found in agricultural soils. One French durum wheat cultivar (i.e. Sculptur) was exposed to low concentrations of Cd (5 nM or 100 nM) in hydroponics. After anthesis, the plants were fed with...
Sat, 09/21/2019 - 03:31
Author(s): Han Zheng, Meng Wang, Shibao Chen, Shanshan Li, Xiaoqin LeiAbstractThe objective of this study was to investigate the responses of cadmium (Cd) availability and transfer in the soil-rice system to added sulfur (S) under unstable pe + pH conditions. Different water management conditions (flooding and aerobic treatments) cause changes in the soil pe + pH. We conducted a pot experiment to...
Sat, 09/21/2019 - 03:31
Author(s): Lulu Kong, Jingze Liu, Qian Han, Qixing Zhou, Junliang HeAbstractEffects of sewage sludge biochars (SSBCs) on the growth of wheat and the specific toxicological mechanisms were investigated from a metabolic perspective for better ecological risk assessment. We observed that conversion of sludge to biochar remarkably changed the properties, and also caused a significant (p < 0.05)...
Sat, 09/21/2019 - 03:31
Author(s): Yue Shen, Tingyan Liu, Yuanyuan Shi, Feng Zhuang, Jianxin Lu, Qiuyu Zhu, Feng DingAbstractBisphenol A (BPA) accumulates in patients with chronic kidney disease (CKD), and hemodialysis filters may contribute to bisphenol burden in patients on hemodialysis (HD). The serum levels of BPA and three BPA analogs, namely, bisphenol B (BPB), bisphenol S (BPS), and bisphenol F (BPF), in 58...
Sat, 09/21/2019 - 03:31
Author(s): Gangshun Rao, Suihua Huang, Umair Ashraf, Zhaowen Mo, Meiyang Duan, Shenggang Pan, Xiangru TangAbstractCadmium (Cd) affects crop growth and productivity by disrupting normal plant metabolism. To determinate whether ultrasonic (US) seed treatment can alleviate Cd stress in rape (Brassica napus L.), the seeds of two oilseed rape cultivars i.e., ‘Youyanzao18’ and ‘Zaoshu104’ were exposed...
Sat, 09/21/2019 - 03:31
Author(s): Mahesh Agarwal, Tanmay Mondal, Biplab BoseAbstractMembrane-anchored heparin-binding EGF-like growth factor (HB-EGF) is the receptor for diphtheria toxin (DT). Mutated or truncated, non-toxic DT has been used earlier for HB-EGF-targeted drug delivery and to modulate HB-EGF signaling. In the present work, we have synthesized a peptide corresponding to a 26 amino acid long stretch of the...
Sat, 09/21/2019 - 03:30
In a recent article in this journal, Luby, Polasky, and Swackhamer come to the provocative conclusion that urban water prices in the United States are “cheaper when drier.” They also argue that utilities fail to provide affordable water and that they charge less for “additional” use compared to “essential” use. We challenge these claims. While the authors correctly point out the many challenges...
Sat, 09/21/2019 - 03:30
We propose a time series modeling approach based on nonlinear dynamical systems to recover the underlying dynamics and predictability of streamflow and to produce projections with identifiable skill. First, a wavelet spectral analysis is performed on the time series to identify the dominant quasiperiodic bands. The time series is then reconstructed across these bands and summed to obtain a signal...
Sat, 09/21/2019 - 03:30
Phase five of the Coupled Model Intercomparison Project enabled a range of decadal modeling experiments where climate models were initialized with observations and allowed to evolve freely for 10–30 years. However, climate models struggle to realistically simulate rainfall and the skill of rainfall prediction in decadal experiments is poor. Here, we examine how predictions of sea surface...
Sat, 09/21/2019 - 03:29
We describe a new effort to enhance climate forecast relevance and usability through the development of a system for evaluating and displaying real‐time subseasonal to seasonal (S2S) climate forecasts on a watershed scale. Water managers may not use climate forecasts to their full potential due to perceived low skill, mismatched spatial and temporal resolutions, or lack of knowledge or tools to...
Sat, 09/21/2019 - 03:29
Listeria monocytogenes is an intracellular pathogen that causes life‐threatening disease called listeriosis. However, in South Africa (SA), there is a dearth of information concerning the potential role of meat and meat products as potential sources for human listeriosis. The aim of the study was to determine the occurrence and level of L. monocytogenes found in meat and meat products in SA and...
Sat, 09/21/2019 - 03:28
Ellagic acid reversibly and effectively inhibited tyrosinase in a mixed manner. Ellagic acid inhibited cell proliferation and induced apoptosis in B16 cells. Hydrogen bond and electrostatic force existed between ellagic acid and tyrosinase. Abstract The activities of ellagic acid in inhibiting mushroom tyrosinase and cell proliferation were evaluated in this research. The results of enzyme...
Sat, 09/21/2019 - 03:28
Sour rot, caused by Geotrichum citriaurantii (G. citri-aurantii.), is one of the most serious grapevine secondary infection diseases in China. We have determined that pterostilbene, the most important phytoalexin, effectively inhibits the activity of G. citri‐aurantii. To study the synthesis mechanism of pterostilbene against G. citri‐aurantii in grape, we initially detected the content of...
Sat, 09/21/2019 - 03:28
The oligosaccharide Hep‐2 from cultured mycelium of Hericium erinaceus was isolated by the method of water extraction, alcohol precipitation, and column chromatography. Hep‐2 consists of galactose, and glucose with 1,080 Da molecular weight and it is an oligosaccharide mixture of 2–7 sugars by LC‐MSn and includes three types of sugar residues with no branches by methylation methods. Hep‐2 possess...
Sat, 09/21/2019 - 03:28
A total of 40, male Wistar Albino, 2–3‐months‐old rats were used and divided into four groups. Control group received the vehicle alone, diosmin group received 100 mg/kg.bw diosmin, the cadmium group received 200 ppm cadmium, cadmium plus diosmin group received 200 ppm cadmium, and 100 mg/kg.bw diosmin for 30 days. Some biochemical parameters (aspartate aminotransferase, alanine aminotransferase...
Sat, 09/21/2019 - 03:28
A novel and porous solid phase microextraction fiber was prepared by quick and simple galvanic displacement reaction and applied to the determination of some polycyclic aromatic hydrocarbons in sunflower oil. The parameters affecting the porosity and thickness of the fiber, and parameters affecting the extraction efficiency including the extraction time, temperature and ionic strength were...
Sat, 09/21/2019 - 03:28
Ion chromatography coupled with mass spectrometry is an established technique for determination of ionic analytes, however, sophisticated buffer removal equipment is required to eliminate inorganic compounds from the eluate before introduction into the ion source of mass spectrometer. A standard high‐performance liquid chromatography coupled with tandem mass spectrometry setup using an ion...
Sat, 09/21/2019 - 03:28
The biomonitoring of hydroxy polycyclic aromatic hydrocarbons in urine, as a direct way to access multiple exposures to polycyclic aromatic hydrocarbons, has raised great concerns due to their increasing hazardous health effects on humans. Solid‐phase extraction is an effective and useful technique to preconcentrate trace analytes from biological samples. Here, we report a novel solid‐phase...
Sat, 09/21/2019 - 03:28
We herein presented a mesoporous cellular foam solid‐phase microextraction coating that showed highly sensitive recognition for weakly polarity polychlorinated biphenyls in water samples. The mesoporous cellular foam coater fiber was for the first time prepared by a simple sol‐gel method. The main experimental parameters including extraction temperature, extraction time, desorption time, stirring...

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