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Chemical contaminants

Thu, 02/01/2018 - 00:00
A simple sensor ordered mesoporous carbon/glassy carbon electrode (OMC/GCE) is developed in this paper for melamine (Mel) detection, which is based on conversion of Mel from non-electroactive Mel to electroactive Cu-Mel complex under presence of copper ions in 0.1 M pH 9.0 borate buffer containing 20% methanol (v/v) as supporting electrolyte at the surface of OMC modified...
Thu, 02/01/2018 - 00:00
A rapid, simple, and efficient method was described for the simultaneous determination of three common antibiotic residues including erythromycin, tetracycline, and chloramphenicol in raw milk. A molecular imprinting technique combined with solid-phase extraction (SPE) was used to pretreat the test samples and then simultaneously detected with HPLC. The whole process, only...
Thu, 02/01/2018 - 00:00
A solid-phase extraction (SPE) combined with high-performance liquid chromatography–tandem mass spectrometry (HPLC-MS/MS) method was developed to determine five phenols in grease-rich food (i.e., hotpot seasoning). Sample added with isotope internal standards bisphenol A-d 4 (BPA-d 4) and 4-n-nonylphenol-d 4 (4...
Thu, 02/01/2018 - 00:00
The first aim of this study was to create, test, and apply a quick, easy, cheap, effective, rugged, and safe (QuEChERS) method, based on acetonitrile extraction, for simultaneous determination of pesticide residues in green chili pepper (fresh and dried forms). There is a group of 86 repeatedly detected pesticides in the agricultural food commodity in Al-Qassim region, Saudi...
Tue, 01/02/2018 - 15:01
Publication date: 30 May 2018 , Volume 249 Author(s): Barbara Feist, Rafal Sitko Among cereals, rice is the second most cultivated staple crop in the world. It may be contaminated by toxic heavy metals present in water or soil. Therefore, monitoring the presence of heavy metals in rice and its products is a matter of a great importance from the nutritional and toxicological view. In this...
Mon, 01/01/2018 - 00:00
The purpose of this study was to establish a new capillary zone electrophoresis method with indirect UV detection for determining the concentration of L-carnitine and acetyl-L-carnitine in liquid milk samples. Orthogonal experimental design was applied to arrange and optimize the experimental conditions. Under selected conditions (using melamine as the additive), both L-...
Sat, 12/30/2017 - 00:00
Abstract The baby foods industry is currently seeking technologies to pasteurize products without formation of processing contaminants such as furan. This work demonstrates the applicability of high hydrostatic pressure (HHP) as a non-thermal decontamination intervention for fruit purée based baby foods. HHP processing was evaluated at 200, 300, and 400 MPa pressures, for...
Wed, 12/27/2017 - 14:51
Publication date: 2 February 2018 , Volume 266 Author(s): Nguyen Thi Nhung, Nguyen Thi Bich Van, Nguyen Van Cuong, Truong Thi Quy Duong, Tran Thi Nhat, Tran Thi Thu Hang, Nguyen Thi Hong Nhi, Bach Tuan Kiet, Vo Be Hien, Pham Thi Ngoc, James Campbell, Guy Thwaites, Juan Carrique-Mas Excessive antimicrobial usage and deficiencies in hygiene in meat production systems...
Sat, 12/23/2017 - 14:01
Publication date: 15 May 2018 , Volume 248 Author(s): Lei Tian, Stéphane Bayen This study investigated the thermal degradation of a veterinary drug, chloramphenicol, in model solutions (water), as well as in spiked and incurred mussel tissues to understand its fate in the food supply chain. Thermal degradation kinetics followed a first-order model in water (e.g. degradation rate: 0.0018–0...
Sat, 12/23/2017 - 12:36
Publication date: March 2018 , Volume 137 Author(s): Jia Wei, Yan Chen, Atawula Tiemur, Jide Wang, Bin Wu The use of gaseous chlorine dioxide (ClO2) as a strong oxidant to degrade the pesticide residues on the table grapes was studied. ClO2 releasing process in the sealed box was investigated. The grapes were sprayed with three pesticides and fumigated by ClO2. After 27 d storage in...
Sat, 12/23/2017 - 04:15
Publication date: April 2018 , Volume 86 Author(s): João Rosa, Sara Leston, Maria Castro, Andreia Freitas, Jorge Barbosa, Miguel Ângelo Pardal, Paulo Rema, Jorge Dias, Fernando Ramos The use of antimicrobials in aquaculture is a well-known fact and merits the focus of the scientific community. In the present study, five drugs (oxytetracycline, sulfadiazine, trimethoprim,...
Fri, 12/22/2017 - 20:25
Publication date: April 2018 Source:LWT, Volume 90 Author(s): Yanping Zou, Yuanyuan Gao, Hui He, Tiankui Yang Wheat germ oil (WGO) is rich in highly concentrated nutrients, especially vitamin E and polyunsaturated fatty acids. In this study, changes in oxidative stability, bioactive components, volatile compounds, and antioxidant capacity of WGO extracted from wheat germ roasted at...
Fri, 12/22/2017 - 20:09
Publication date: January 2018 Food and Chemical Toxicology, Volume 111 Author(s): Hend M. Hussien, Aml Abd-Elmegied, Doaa A. Ghareeb, Hani S. Hafez, Hany E.A. Ahmed, Nehad Abd El-moneam Heavy metals are reported as neurodegenerative disorders progenitor. They play a role in the precipitation of abnormal β-amyloid protein and hyper-phosphorylated tau, the main hallmarks of...
Wed, 12/20/2017 - 17:00
Kristina Attoff, Anda Gliga, Jessica Lundqvist, Ulf Norinder, Anna Forsby Despite its high relevance, developmental neurotoxicity (DNT) is one of the least studied forms of toxicity. Current guidelines for DNT testing are based on in vivo testing and they require extensive resources. Transcriptomic approaches using relevant in vitro models have been suggested as a useful tool for identifying...
Wed, 12/20/2017 - 01:06
Bao Chen, Sha Luo, Yingjie Wu, Jiayuan Ye, Qiong Wang, Xiaomeng Xu, Fengshan Pan, Kiran Y. Khan, Ying Feng, Xiaoe Yang
Tue, 12/19/2017 - 19:00
AbstractNumerous studies have indicated that yellow semen syndrome (YSS) of turkey is associated with the production of low semen quality, resulting in reduced fertility and hatchability. It is unknown at present if the etiology of YSS also could be linked to low-molecular weight metabolites. The aim of this study was to examine the metabolome of white and yellow seminal plasma of turkeys. Two...
Tue, 12/19/2017 - 00:00
A porous β-cyclodextrin polymer (P-CDP) was used as a new sorbent for simultaneous solid-phase extraction (SPE) and determination of bisphenol A (BPA), bisphenol F (BPF), and bisphenol AF (BPAF). The P-CDP was obtained via the cross-linking of β-cyclodextrin with tetrafluoroterephthalonitrile, and then was characterized by FT-IR spectroscopy, scanning electron microscopy,...
Mon, 12/18/2017 - 13:26
Publication date: April 2018 Source:LWT - Food Science and Technology, Volume 90 Author(s): Lauana Pellanda de Souza, Lêda Rita D'Antonino Faroni, Fernanda Fernandes Heleno, Paulo Roberto Cecon, Thamiris Danielle Carvalho Gonçalves, Greicelene Jesus da Silva, Lucas Henrique Figueiredo Prates Ozone (O3) is a powerful oxidant and is used in water treatment, pest disinfection and...
Mon, 12/18/2017 - 12:57
Publication date: Available online 18 December 2017 Food and Chemical Toxicology Author(s): Faezeh Vahdati Hassani, Khalil Abnous, Soghra Mehri, Amirhossein Jafarian, Ruth Birner-Gruenberger, Rezvan Yazdian Robati, Hossein Hosseinzadeh Bisphenol A (BPA), discovered to be an artificial estrogen, has been shown to leach from some containers and mediate oxidative damage to cells...
Sun, 12/17/2017 - 12:57
Publication date: Available online 16 December 2017 Food and Chemical Toxicology Author(s): Ana M. Molina, Nieves Abril, Noelia Morales-Prieto, José G. Monterde, Antonio J. Lora, Nahúm Ayala, Rosario Moyano Given the importance of bisphenol A (BPA) as a xenoestrogen and its potential effects on human and animal health, we evaluated BPA exposure's short-term effects on follicular...
Sun, 12/17/2017 - 00:00
Volatiles are critical for real and perceived quality of mussels. In the present study, we determined, for the very first time, the characteristic volatiles of fresh Mediterranean mussels (Mytilus galloprovincialis) and their variation during 4 days of storage at 6.0 ± 0.5 °C. During this time, volatile organic compounds (VOCs) were monitored using SPME-GC-MS. Twenty-seven VOCs...
Mon, 12/11/2017 - 02:00
Abstract In this work, fungi present in the grapevine's phyllosphere collected from the main demarcated wine regions of Portugal were identified, and their phylogenetic relationships were analysed. A total of 46 vine samples (leaves and berries) were collected from different parts of the country, being isolated a total of 117 fungal colonies that were identified to the genus level and sequenced...
Sat, 12/09/2017 - 11:05
Abstract Nowadays, the use of pesticides is inevitable for pest-control in crops, especially the fruit and vegetables. After the harvest from raw agricultural commodities, the amount of pesticide residues in food is mainly influenced by the storage, handling and processing that follow. If good agricultural and good manufacturing practices are enforced effectively, the amount of pesticide residues...
Sat, 12/09/2017 - 03:11
Publication date: 25 April 2018 , Volume 246 Author(s): Tiele M. Rizzetti, Maiara P. de Souza, Osmar D. Prestes, Martha B. Adaime, Renato Zanella In this study a simple and fast multi-class method for the determination of veterinary drugs in bovine liver, kidney and muscle was developed. The method employed acetonitrile for extraction followed by clean-up with EMR-Lipid® sorbent and...
Thu, 12/07/2017 - 00:00
Acrylamide (ACR) is a potential carcinogen and is found in thermally processed foods such as potato chips, biscuits, baby foods, coffee, etc. In this paper, l-cysteine-capped Mn-doped ZnS quantum dots (QDs) as phosphorescent probes were used for the determination of ACR. This method based on quenching of the phosphorescence intensity of the QDs with the interaction of ACR. Room...
Tue, 12/05/2017 - 17:00
Christina Herland Fløtre, Kristin Varsi, Thea Helm, Bjørn Bolann, Anne-Lise Bjørke-Monsen Background The toxic trace elements mercury (Hg), lead (Pb), cadmium (Cd) and antimony (Sb) are transferred over the placenta to the fetus and secreted into the breastmilk. All four elements bioaccumulate in the body and as maternal age at delivery is increasing in industrialized countries, the burden of...
Fri, 12/01/2017 - 11:00
Microbial bioremediation is a promising approach for the removal of polycyclic aromatic hydrocarbon (PAH) contaminants. Many degraders of PAHs possess efflux pump genes in their genomes; however, their specific roles in the degradation of PAHs have not been clearly elucidated. In this study, two efflux pumps, TtgABC and SrpABC, were systematically investigated to determine their functions in a...
Fri, 12/01/2017 - 00:00
A voltammetric method for fast and high sensitive determination of Bisphenol A (BPA) using glassy carbon electrode (GC) modified with carbon black nanoparticles (CB) was developed. Cyclic voltammetry study in the 0.1 M phosphates of pH = 7.0 gave single anodic peak at 578 mV. Adsorption-controlled oxidation of BPA was found to be irreversible with the participation of two...
Fri, 12/01/2017 - 00:00
An acryloyl β-cyclodextrin (A-β-CD) monolithic column for solid-phase microextraction (SPME) and determination of carbofuran and carbaryl by high-performance liquid chromatography (HPLC) have been prepared through a “one-step” polymerization method. The synthesis conditions, including the volume of cross-linker, the ratio and volume of mixed porogenic solvent consisted of...
Fri, 12/01/2017 - 00:00
Modified QuEChERS method combined with gas chromatography tandem mass spectrometry (GC-MS/MS) was developed and validated to determine pesticide residues in dried cocoa beans. Extraction efficiency of matrix hydration effect on 19 pesticide residues was studied and optimized using 23 full factorial design with percentage recoveries as the response variable. The optimized...
Fri, 12/01/2017 - 00:00
In this study, a core–shell magnetic dummy molecularly imprinted polymer (MDMIP) was prepared with a novel and simple method. The imprinting layer was synthesized directly on the surface of Fe3O4 by only one step, which avoided further modification on the exterior of magnetic core. 4,4′-Dihydroxybiphenyl (DDBP) was used as dummy template instead of bisphenol A (BPA) to...
Mon, 11/27/2017 - 18:29
Publication date: April 2018 , Volume 86 Author(s): Jingjing An, Xiaolin Gu, Xiao Zhao, Cuicui Yang, Dina Tabys, Yan Xu, Ning Liu This study aimed to determine the degradation of acephate and its metabolite methamidophos during different kinds of grape processing, using a simple gas-chromatographic method with a flame photometry detector. During wine processing, there was no...
Fri, 11/24/2017 - 10:00
Abstract BACKGROUNDCadmium (Cd) is a common harmful substance that has many deleterious effects on the liver and kidney. Most reports about Cd toxic studies focused on its inorganic status, whereas the toxicity of Cd in organic materials is less studied. Here, we performed RNA-seq to explore the influences of Cd contaminated rice on function of the liver and kidney of finishing pigs. RESULTSThe...
Thu, 11/23/2017 - 13:10
Publication date: January 2018 Food and Chemical Toxicology, Volume 111 Author(s): Martin Olof Larsson, Vibe Sloth Nielsen, Niels Bjerre, Frank Laporte, Nina Cedergreen Relatively few studies are available on realistic cumulative risk assessments for dietary pesticide exposure. Despite available studies showing low risk, public concern remains. A method to estimate realistic residue...
Thu, 11/23/2017 - 02:40
Summary In this study, the antioxidant activities of blueberry anthocyanin extracts from ten blueberry varieties were evaluated based on the methods of scavenging activities for DPPH radicals, ABTS radicals, hydroxyl radicals and ferric reducing antioxidant power (FRAP) assay. Among the ten blueberry varieties, Polaris had the highest antioxidant abilities and the largest amounts of anthocyanins...
Tue, 11/21/2017 - 05:20
Flour premix of copra meal 15% with germinated foxtail millet 85% blended with amaranth in 60:40 proportions to get gluten free, calorie deficient composite mix for biscuits. Attempts were made for obese and diabetics as target population with maltodextrin and acesulfame-k to find the extent of possible partial replacement of bakery fat and table sugar, respectively. It was found that...
Tue, 11/21/2017 - 02:11
Summary Arsenic, a highly cytotoxic and cancerogenic metalloid, is brought into the biosphere through geochemical sources and anthropogenic activities. A global biogeochemical arsenic biotransformation cycle exists in which inorganic arsenic species are transformed into organoarsenicals, which are subsequently mineralized again into inorganic arsenic compounds. Microorganisms contribute to this...
Mon, 11/20/2017 - 03:00
Journal of Food Protection, Volume 80, Issue 12, Page 2083-2089, December 2017.
Mon, 11/20/2017 - 03:00
Journal of Food Protection, Volume 80, Issue 12, Page 2083-2089, December 2017.
Fri, 11/17/2017 - 00:00
AbstractDifferences in risk perceptions of public health and food safety hazards in various poultry husbandry systems by various stakeholder groups, may affect the acceptability of those husbandry systems. Therefore, the objective was to gain insight into risk perceptions of citizens, poultry farmers, and poultry veterinarians regarding food safety and public health hazards in poultry husbandry...
Thu, 11/16/2017 - 21:57
Publication date: April 2018 , Volume 86 Author(s): Anna Bauer, Jens Luetjohann, Sascha Rohn, Jürgen Kuballa, Eckard Jantzen A new sensitive, fast, and robust analytical method based on a QuPPe (Quick Polar Pesticides) extraction procedure coupled to ion chromatography-tandem mass spectrometry (IC-MS/MS) was developed. The study aimed at the determination of the highly polar...

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