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Chemical contaminants

Tue, 10/23/2018 - 00:00
Journal of Agricultural and Food ChemistryDOI: 10.1021/acs.jafc.8b04908
Mon, 10/22/2018 - 12:48
The histidine ATP-binding cassette (ABC) transporter of Salmonella enterica serovar Typhimurium is among the best-studied type I ABC import systems. The transporter consists of two transmembrane subunits, HisQ and HisM, and a homodimer of the nucleotide-binding subunit, HisP. Substrates are delivered by two periplasmic solute binding proteins, HisJ and LAO, with preferences for histidine and...
Mon, 10/22/2018 - 01:10
Publication date: Available online 20 October 2018Source: LWTAuthor(s): Yu Shen, Sijia Zhao, Xiaoduo Zhao, Hongyang Sun, Meili Shao, Honghua XuAbstractAcrylamide (AA), a toxin that primarily exists in fried food, causes neurotoxicity, genetic toxicity, genetic mutations, and DNA damage. The present study aimed to elucidate the mechanisms by which lactic acid bacteria (LAB) adsorb AA. LAB cells...
Sun, 10/21/2018 - 01:06
Available online 13 October 2018 Author(s): Yamine Bouzembrak, Hans J.P. MarvinAbstractThe presence and development of many food safety risks are driven by factors within and outside the food supply chain, such as climate, economy and human behaviour. The interactions between these factors and the supply chain are complex and a system or holistic approach is needed to reveal cause-effect...
Wed, 10/17/2018 - 11:00
Bacteria play an important role in the removal of polycyclic aromatic hydrocarbons (PAHs) from polluted environments. In marine environments, Cycloclasticus is one of the most prevalent PAH-degrading bacterial genera. However, little is known regarding the degradation mechanisms for multiple PAHs by Cycloclasticus. Cycloclasticus sp. strain P1 was isolated from deep-sea sediments and is known to...
Wed, 10/17/2018 - 11:00
Reductive dehalogenation mediated by organohalide-respiring bacteria plays a critical role in the global cycling of organohalides. Nonetheless, information on the dehalogenation enantioselectivity of organohalide-respiring bacteria remains limited. In this study, we report the enantioselective dechlorination of chiral polychlorinated biphenyls (PCBs) by Dehalococcoides mccartyi CG1. CG1...
Fri, 10/12/2018 - 01:12
Available online 10 October 2018 Author(s): Bruce C. Koppen, Patrick P.G. Mulder, Leonie de Boer, Martijn Riool, Jan W. Drijfhout, Sebastian A.J. ZaatABSTRACTAntibiotic resistance and biofilm formation are the major reasons for failure in treatment of bacterial infections. We therefore aimed to identify synergistic combinations of conventional antibiotics and novel Synthetic Antimicrobial and...
Thu, 10/11/2018 - 01:11
Publication date: Available online 9 October 2018 Food and Chemical ToxicologyAuthor(s): Fu-Mei Huang, Yu-Chao Chang, Shiuan-Shinn Lee, Yung-Chyuan Ho, Ming-Ling Yang, Hui-Wen Lin, Yu-Hsiang KuanAbstractBisphenol A (BPA) is primarily used in production of polycarbonate plastics and epoxy resins including plastic containers. BPA is an endocrine disruptor and supposes to induce asthma and cancer....
Thu, 10/11/2018 - 01:08
Available online 8 October 2018 Author(s): Kanlaya Prapainop, Wid Mekseriwattana, Weena Siangproh, Orawon Chailapakul, Kriangsak SongsriroteAbstractAn approach for the determination of benzoic acid (BA) and total paraben content using mercaptosuccinic acid capped CdTe quantum dots (MSA-CdTe QDs) as an optical probe is presented. The levels of these preservatives in the samples of liquid foodstuff...
Mon, 10/08/2018 - 01:12
Publication date: Available online 6 October 2018 Food and Chemical ToxicologyAuthor(s): Walkiria Levy, Karl-Werner Schramm, Florian Mertes, Bernhard Henkelmann, Martina Maywald, Peter Uciechowski, Alexander Loa, Johannes Haedrich, Ines Thiem, Henner Hollert, Roland Goerlich, Thorsten Bernsmann, Lothar RinkAbstractRecent European regulations have indicated the need for new bioanalytical screening...
Fri, 10/05/2018 - 01:12
Publication date: Available online 3 October 2018 Food and Chemical ToxicologyAuthor(s): Matthew Dietrich
Mon, 10/01/2018 - 00:00
The identification of transformation products (TPs) of pesticides in food is a crucial task difficult to tackle, due to the lack of standards. In this work, we present a novel methodology to synthesize five main TP standards of the insecticide chlorpyrifos (CPF) and to investigate their occurrence in selected fruits and spices. TPs were electrochemically (EC) synthesized...
Mon, 10/01/2018 - 00:00
In this work, g-C3N4 was successfully fabricated by direct pyrolysis of the melamine, and then without any modification, was used to prepare g-C3N4/graphite pencil electrode. The maximum current at this working electrode was depended significantly by the pH value; thus, the g-C3N4/tartrazine interaction is pH-dependent and the best pH was obtained in an acidic medium at pH 2....
Mon, 10/01/2018 - 00:00
In this study, a simple and high-throughput multiresidue pesticide analysis method based on the quick, easy, cheap, effective, rugged, safe (QuEChERS) extraction combined with gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS) and ultra-high performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) is presented for the determination of...
Mon, 10/01/2018 - 00:00
Abstract β-propeller phytase-like sequences (BPP-like sequences) are widespread in the microbial world and have been found in the sequenced genomes of aquatic, soil, and plant bacteria. Exploring NCBI microbial genome database for putative genes encoding phytase, a BPP-like sequence from Sphingomonas wittichii RW-1 (Sequence ID: CP000699.1), known for its capacity of degrading...
Sun, 09/30/2018 - 01:12
Publication date: Available online 29 September 2018 Food and Chemical ToxicologyAuthor(s): Sébastien Cambier, Masatake Fujimura, Jean-Paul BourdineaudAbstractMethylmercury (MeHg) taken up through fish consumption can be transferred from the mother to the fetus during pregnancy. In the present study, pregnant rat mothers were contaminated with environmentally relevant doses of 36 and 76 ng MeHg/g...
Sun, 09/30/2018 - 01:11
Available online 28 September 2018 Author(s): Qixiao Zhai, Yue Guo, Xiaoshu Tang, Fengwei Tian, Jianxin Zhao, Hao Zhang, Wei ChenAbstractCadmium (Cd) contamination in rice has become a serious food safety concern in developing countries. Microbial fermentation has been demonstrated as a promising method for removing Cd from rice. The present study evaluated the effects of Lactobacillus plantarum...
Wed, 09/26/2018 - 17:00
Tania Pozzo, Shawn M. Higdon, Sivakumar Pattathil, Michael G. Hahn, Alan B. Bennett An indigenous maize landrace from the Sierra Mixe region of Oaxaca, Mexico exhibits extensive formation of aerial roots which exude large volumes of a polysaccharide-rich gel matrix or “mucilage” that harbors diazotrophic microbiota. We hypothesize that the mucilage associated microbial community carries out...
Wed, 09/26/2018 - 01:13
Publication date: Available online 24 September 2018Source: LWTAuthor(s): Maria Luisa Ruiz del Castillo, Mónica Rodríguez-Valenciano, Gema Flores, Gracia Patricia BlanchAbstractAlthough, the use of pesticides is necessary in agriculture to prevent crops destruction and to avoid the attack to leaves and stems of the plants, which cause quality defects of fruits and yield reduction, the control of...
Sun, 09/23/2018 - 01:12
Publication date: November 2018 Food and Chemical Toxicology, Volume 121Author(s): C. SiekeAbstractCumulative dietary risks for the German population owing to pesticide residues in foods were assessed using food monitoring and consumption data. Based on grouping principles for cumulative assessment groups (CAG) as defined by the European Food Safety Authority, probabilistic modelling gave...
Sat, 09/22/2018 - 01:11
Publication date: December 2018Source: LWT, Volume 98Author(s): Raquel Fernanda Milani, Esther Lima de Paiva, Leandro Iagê Peron, Marcelo Antonio Morgano, Solange CadoreAbstractA simple method for arsenic species As (III), As (V), monomethylarsonic acid (MMA) and dimethylarsonic acid (DMA) were investigated in 18 herbal tea leaves and their infusion by high performance liquid chromatography...
Thu, 09/20/2018 - 01:12
Publication date: Available online 18 September 2018 Food and Chemical ToxicologyAuthor(s): Bahareh Ghasemidehkordi, Ali Akbar Malekirad, Habibollah Nazem, Mohammad Fazilati, Hossein Salavati, Nabi Shariatifar, Mohammad Rezaei, Yadolah Fakhri, Amin Mousavi Khaneghah
Tue, 09/18/2018 - 03:00
Journal of Food Protection, Volume 81, Issue 10, Page 1696-1706, October 2018.
Sun, 09/16/2018 - 01:11
Publication date: November 2018 Food and Chemical Toxicology, Volume 121Author(s): Paula Moyano, José Manuel García, Margarita Lobo, María José Anadón, Emma Sola, Adela Pelayo, Jimena García, María Teresa Frejo, Javier del PinoAbstractCadmium, a neurotoxic environmental compound, produces cognitive disorders, although the mechanism remains unknown. Cadmium induces a more pronounced cell death on...
Sat, 09/15/2018 - 01:11
Publication date: November 2018 Food and Chemical Toxicology, Volume 121Author(s): Marta Oliveira, Filipa Gomes, Álvaro Torrinha, Maria João Ramalhosa, Cristina Delerue-Matos, Simone MoraisAbstractPolycyclic aromatic hydrocarbons (PAHs) are persistent pollutants that have been raising global concern due to their carcinogenic and mutagenic properties. A total of 18 PAHs (16 USEPA priority...
Mon, 09/10/2018 - 23:29
Journal of the Science of Food and Agriculture, Volume 0, Issue ja, -Not available-.
Sat, 09/01/2018 - 00:00
A simple analytical method combining solvent extraction and liquid chromatography-high-resolution mass spectrometry (LC-HRMS) was developed for the analysis of pesticide residues in rice bran protein powder. Owning to the high accuracy of HRMS in determination of mass to charge ratio (m/z), a suspect screen of pesticide residues was performed by LC-HRMS prior to...
Sat, 09/01/2018 - 00:00
In this work, surface-enhanced Raman spectroscopy (SERS) was used with silver colloid substrate for rapid detection of omethoate (an organophosphate pesticide) in standard solution and peach extract. The findings demonstrated that the characteristic wavenumber of the pesticide could be precisely identified using the SERS method. The calibration curve was plotted between...
Sat, 09/01/2018 - 00:00
A method was developed for the analysis of four polycyclic aromatic hydrocarbons regulated in the European Union, namely, benzo[a]anthracene, chrysene, benzo[b]fluoranthene, and benzo[a]pyrene in edible oils. Multi-walled carbon nanotubes were applied for dispersive solid-phase extraction of analytes from the oils after dilution with n-hexane followed by elution of analytes...
Sat, 09/01/2018 - 00:00
The detection of polycyclic aromatic hydrocarbons (PAHs) and their metabolites in food and in agricultural sources is an important research objective due to the PAHs’ known persistence, carcinogenicity, and toxicity. PAHs have been found in the milk of lactating cows and in the leaves and stems of plants grown in PAH-contaminated areas, thereby making their way into both cow...
Mon, 08/27/2018 - 01:02
Publication date: Available online 24 August 2018 Innovative Food Science & Emerging TechnologiesAuthor(s): A. Antunes-Rohling, S. Ciudad-Hidalgo, J. Mir-Bel, J. Raso, G. Cebrián, I. ÁlvarezAbstractAcrylamide is a compound that is potentially carcinogenic for human. This means that levels of acrylamide in foods should be reduced to a maximum. The acrylamide molecule is present in foods...
Sat, 08/25/2018 - 01:06
Available online 23 August 2018 Author(s): Qin Tu, Michael E. Hickey, Tianxi Yang, Siyue Gao, Qingmiao Zhang, Yanqi Qu, Xinyi Du, Jinyi Wang, Lili HeAbstractThe pesticide fipronil was recently involved in a “poisonous eggs” scandal which resulted in substantial economic losses and public health risks. We report a simple and rapid method which can be implemented to detect fipronil on egg shells...
Fri, 08/17/2018 - 01:13
Publication date: Available online 16 August 2018 Food and Chemical ToxicologyAuthor(s): Ozgur Golge, Fatma Hepsag, Bulent KabakAbstractThis report describes levels of 170 pesticide residues in green pepper and cucumber marketed in Turkey. The report also comprises the outcome of the consumer risk assessment of selected pesticides. In total, 725 samples of vegetables were analysed for residues of...
Fri, 08/17/2018 - 01:13
Publication date: Available online 16 August 2018 Food and Chemical ToxicologyAuthor(s): Asad Ullah, Madeeha Pirzada, Sarwat Jahan, Hizb Ullah, Naheed Turi, Waheed Ullah, Mariyam Fatima Siddiqui, Muhammad Zakria, Kinza Zafar Lodhi, Muhammad Munir KhanAbstractBisphenol A an estrogen-mimic endocrine disrupting chemical, used to manufacture polycarbonate plastics and epoxy resins with toxic effects...
Wed, 08/08/2018 - 04:02
, Volume 108, Issue 9, Page e1-e1, September 2018.
Sun, 08/05/2018 - 01:10
Publication date: Available online 4 August 2018 Food and Chemical ToxicologyAuthor(s): Heloisa Ghizoni, Marina Ventura, Dirleise Colle, Cinara Ludvig Gonçalves, Viviane de Souza, Juliana Montagna Hartwig, Danúbia Bonfanti Santos, Aline Aita Naime, Vanessa Cristina de Oliveira Souza, Mark William Lopes, Fernando Barbosa, Patricia S. Brocardo, Marcelo FarinaAbstractFish and shellfish, which...
Sat, 08/04/2018 - 01:12
Available online 3 August 2018 Author(s): Xinmiao Luo, Xianglong Xu, Hua Chen, Ruixue Bai, Yan Zhang, Xiaorong Hou, Fan Zhang, Yong Zhang, Manoj Sharma, Huan Zeng, Yong ZhaoAbstractThis study aims to examine the food safety knowledge, attitudes, and practices (KAP) among the students from nursing, education and medical colleges. A cross-sectional study was conducted among 3454 college students in...

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