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Chemical contaminants

Mon, 07/01/2019 - 00:00
Abstract Heavy metals, being toxic in nature, are one of the most persistent problems in wastewater. Unabated discharge of large amount of heavy metals into water bodies are known to cause several environmental and health impacts. Biological remediation processes like microbial remediation and phytoremediation are proved to be very effective in the reduction of heavy metal...
Mon, 06/17/2019 - 11:00
Methylmercury (MeHg) is a potent bioaccumulative neurotoxin that is produced by certain anaerobic bacteria and archaea. Mercury (Hg) methylation has been linked to the gene pair hgcAB, which encodes a membrane-associated corrinoid protein and a ferredoxin. Although microbial Hg methylation has been characterized in vivo, the cellular biochemistry and the specific roles of the gene products HgcA...
Mon, 06/17/2019 - 11:00
Mercury (Hg) methylation in the Florida Everglades is of great environmental concern because of its adverse effects on human and wildlife health through biomagnification in aquatic food webs. Periphyton and flocculant materials (floc) overlaying peat soil are important ecological compartments producing methylmercury (MeHg) in this ecosystem. These compartments retain higher concentrations of MeHg...
Fri, 06/14/2019 - 01:12
Available online 13 June 2019 Author(s): Sylwia Mildner-Szkudlarz, Maria Różańska, Paulina Piechowska, Agnieszka Waśkiewicz, Renata Zawirska-WojtasiakAbstractThe formation of toxic and potentially carcinogenic acrylamide, alongside volatile aroma compounds, was studied after polyphenols ((+)-catechin, quercetin, gallic, ferulic, caffeic acids) were added to model bread. The addition of as little...
Fri, 06/14/2019 - 01:12
Publication date: Available online 13 June 2019 Food and Chemical ToxicologyAuthor(s): Giacomo Russo, Francesco Barbato, Damiano Gustavo Mita, Lucia GrumettoAbstractBisphenol A and its analogues belong to the class of endocrine disrupting chemicals, massively employed by industries to produce polycarbonate and epoxy resins, designed to be in direct contact with foodstuffs. Their leaching from the...
Wed, 06/12/2019 - 07:43
Bacteria use ECF sigma factors to maintain metal homeostasis. They regulate the expression of genes either to import metals under conditions of metal depletion or to reduce toxicity when metal concentrations are excessive. These adaptive mechanisms can be complex, consisting of several proteins with different cell locations, or very simple, consisting of only the sigma factor capable of sensing...
Wed, 06/12/2019 - 01:13
Available online 10 June 2019 Author(s): Moon-Jung Hwang, Se-Jin Kang, Hoe-Seong Kim, Kwang-Won LeeAbstractPolycyclic aromatic hydrocarbons (PAHs) are primarily produced during the incomplete combustion of organic matter. PAHs are suspected endocrine disruptors and possible carcinogenic materials. The major sources of human exposure to PAHs are inhaled fumes and food. The aim of this study was to...
Wed, 06/12/2019 - 01:13
Publication date: Available online 11 June 2019 Environmental ResearchAuthor(s): Yan Li, Xianyu Wang, Leisa-Maree L. Toms, Chang He, Peter Hobson, Peter D. Sly, Lesa L. Aylward, Jochen F. MuellerAbstractThis study aimed to assess pesticide concentration and composition trends associated with age and sex in Australian infants and toddlers. Individual urine samples (n = 400) were collected in 2014/...
Mon, 06/10/2019 - 01:13
Available online 8 June 2019 Author(s): Diana Angélica Varela-Martínez, Miguel Ángel González-Curbelo, Javier González-Sálamo, Javier Hernández-BorgesAbstractIn this work, three versions of the QuEChERS method (original, AOAC 2007.01 and CEN 15662) were evaluated for the extraction of 38 multiclass pesticides from a mixture of five dried fruits: (strawberry, blackberry, passion fruit, pineapple...
Mon, 06/10/2019 - 01:12
Publication date: Available online 8 June 2019 Food and Chemical ToxicologyAuthor(s): A.M. Api, D. Belsito, D. Botelho, M. Bruze, G.A. Burton, J. Buschmann, M.L. Dagli, M. Date, W. Dekant, C. Deodhar, M. Francis, A.D. Fryer, L. Jones, K. Joshi, S. La Cava, A. Lapczynski, D.C. Liebler, D. O'Brien, A. Patel, T.M. Penning
Sun, 06/09/2019 - 01:14
Available online 7 June 2019 Author(s): Chong Teng, Shimin Wu, Guangyi GongAbstractIn this study, we have investigated the effect of laccase from Aspergillus niger on the oxidation indices and polycyclic aromatic hydrocarbon (PAH) and oxygenated PAH (OPAH) content in waste cooking oil after frying nugget, pumpkin pie and youtiao. The acid value remained almost same while the peroxide value saw...
Sun, 06/09/2019 - 01:14
Available online 8 June 2019 Author(s): Camilo Rivera-Vera, Guillermo Lasarte-Aragonés, Manuel A. Bravo, Daniela Muñoz-Lira, Ricardo Salazar, Carla Toledo-NeiraAbstractA rapid, and sensitive analytical method based on the use of Dispersive Liquid-Liquid Microextraction, ionic liquids and High-performance liquid chromatography equipped with a fluorescence detector for determination of six...
Sat, 06/08/2019 - 01:13
Available online 7 June 2019 Author(s): Daniel B. Alcântara, Tatiana S. M. Fernandes, Hélio O. Nascimento, Amanda F. Lopes, Marília G. G. Menezes, Ari C. A. Lima, Tecia V. Carvalho, Patricia Grinberg, Maria Aparecida L. Milhome, André H. B. Oliveira, Helena Becker, Guilherme J. Zocolo, Ronaldo F. NascimentoAbstractThis manuscript is a bibliographic review about analyses of different classes of...
Thu, 06/06/2019 - 01:11
Publication date: 30 October 2019 , Volume 296Author(s): Li Zhao, Ting Zhou, Fangfang Yan, Xiaoling Zhu, Qun Lu, Rui LiuAbstractThe potential synergistic effects of Flavan-3-ols to inhibit the formation of acrylamide have attracted wide attention. This study aims to investigate the synergistic inhibitory effects of the B-type procyanidin and flavan-3-ols monomer on acrylamide production in food...
Wed, 06/05/2019 - 17:00
Carolin Fechner, Matthias Greiner, Helmut Heseker, Oliver Lindtner Cocoa contains aluminium and cadmium as environmental contaminants while concentrations are supposed to be country of origin-related. Integrating origin in dietary exposure assessment could refine calculations. Averages or higher percentiles of concentrations in cocoa powder from German Food Monitoring (GFM) and cocoa consumption...
Wed, 06/05/2019 - 01:12
Available online 3 June 2019 Author(s): Renata De O. Silva, Marília G.G. Menezes, Rubens C. Castro, Crisiana De A. Nobre, Maria A.L. Milhome, Ronaldo F. Do NascimentoAbstractThe intensive use of pesticides has led to the need to optimize analytical methodologies for the control of residues in food. The present study aims to compare the efficiency of different ion sources (Eletrospray Ionization-...
Tue, 06/04/2019 - 11:04
In this paper, comparative study on fresh and frozen tomatoes of organic and conventionally cultivated crops was performed. Fruits of tomato cv. Rio Grande© were used and stored at 18°C for 12 months. Quality parameters of ascorbic acid, lycopene, β‐carotene, glucose, fructose and proteins, pH, color, acidity, water‐soluble solids, and elements and azoxystrobine were measured. The results showed...
Tue, 06/04/2019 - 05:32
Abstract Fresh fruits and vegetables are a rich source of micronutrients. However, many foodborne illnesses have been linked to the consumption of fresh fruits and vegetables as they are reported to harbor contaminants such as microorganisms and pesticides. Recently reported foodborne outbreaks have been linked to a diverse group of fruits and vegetables due to the presence of various pathogens...
Sat, 06/01/2019 - 01:14
Available online 31 May 2019 Author(s): Elisane O. dos Santos, Julia O. Gonzales, Joana C. Ores, Liziane C. Marube, Sergiane S. Caldas, Eliana B. Furlong, Ednei G. PrimelAbstractSand was studied as a solid support in ultrasound-assisted matrix solid-phase dispersion (UA–MSPD) for the extraction of different pesticide classes, including organophosphates, carbamates, triazoles and pyrethroids from...
Sat, 06/01/2019 - 01:14
Available online 31 May 2019 Author(s): Fateme Samiee, Mostafa Leili, Javad Faradmal, Zahra Torkshavand, Gholamreza AsadiAbstractHeavy metal toxicity is related with a number of diseases, but the problem increases many-fold when toxic metals are found in breast milk, the basic food item in a vulnerable age group. Twenty milk samples from lactating women were collected from rural areas of arsenic-...
Sat, 06/01/2019 - 01:14
Publication date: Available online 30 May 2019 Environmental ResearchAuthor(s): Irene van Woerden, Meg Bruening, Jessica Montresor-López, Devon C. Payne-SturgesAbstractBackgroundEmerging adulthood (ages 18–25 years) is a key turning point in the life course characterized by particularly poor eating behaviors (e.g., low in fruits and vegetables, and high in fast food) and weight gain. Emerging...
Fri, 05/31/2019 - 01:12
Publication date: 15 October 2019 , Volume 295Author(s): Kangni Chen, Xiaoxue Yang, Zhan Huang, Shiliang Jia, Yuqi Zhang, Jing Shi, Hui Hong, Ligeng Feng, Yongkang LuoAbstractFish scales are usually discarded or used to produce fish meal, etc. In order to enhance their utility, we produced the gelatin hydrolysates from fish scales (FSGH) and they were heated with glucose, xylose, and ribose to...
Sat, 05/25/2019 - 01:11
Publication date: Available online 24 May 2019 Environmental ResearchAuthor(s): Christian Sonne, Katrin Vorkamp, Anders Galatius, Line Kyhn, Jonas Teilmann, Rossana Bossi, Jens Søndergaard, Igor Eulaers, Jean-Pierre Desforges, Ursula Siebert, Rune DietzAbstractThe overall aim of the present study was to assess human exposure to environmental contaminants from consumption of harbour seal (Phoca...
Fri, 05/24/2019 - 01:11
Publication date: Available online 23 May 2019 Food and Chemical ToxicologyAuthor(s): Haroon Khan, Muhammad Zafar, Seema Patel, SM Mukarrum Shah, Anupam BishayeeAbstractα-glucosidase inhibition is a rational approach in the effective management of type 2 diabetes. Several inhibitors of this enzyme class are in clinical use, but are riddled with efficacy, potency and safety challenges. For this...
Fri, 05/24/2019 - 00:00
Toxins, Vol. 11, Pages 295: Fengycin Produced by Bacillus amyloliquefaciens FZB42 Inhibits Fusarium graminearum Growth and Mycotoxins Biosynthesis Toxins doi: 10.3390/toxins11050295 Authors: Alvina Hanif Feng Zhang Pingping Li Chuchu Li Yujiao Xu Muhammad Zubair Mengxuan Zhang Dandan Jia Xiaozhen Zhao Jingang Liang Taha Majid Jingyuau Yan Ayaz Farzand Huijun Wu Qin...
Thu, 05/23/2019 - 01:12
Available online 21 May 2019 Author(s): Marta Mesías, Laura Sáez-Escudero, Francisco J. Morales, Cristina Delgado-AndradeAbstractBreakfast cereals are important contributors to acrylamide daily exposure in Western countries. Acrylamide was determined by LC-ESI-MS/MS in 60 commercial breakfast cereals marketed in Spain. The influence of the predominant cereal, protein, fibre and sugar content, as...
Thu, 05/23/2019 - 01:12
Available online 21 May 2019 Author(s): Thomas Stroheker, Yong Joo Chung, Gabriele Scholz, Paolo MazzatortaAbstractChemical contaminants can occur at trace levels in foods or food ingredients either as intrinsic toxins produced in plant/animal metabolism or by external contamination due to fungal growth, agricultural practice, environment or food manufacturing processes. Monitoring and managing...
Thu, 05/23/2019 - 01:11
Available online 21 May 2019 Author(s): Xinying Gong, Mi Tang, Zhengjun Gong, Zhongping Qiu, Dongmei Wang, Meikun FanAbstractIn this work, we report a simple and rapid surface-enhanced Raman scattering (SERS) method for the screening of pesticide residues on fruit peels using a portable Raman spectrometer. Adhesive tapes were used as the sampling media; the effectiveness of different tape brands...
Thu, 05/23/2019 - 01:11
Publication date: Available online 20 May 2019 Environmental ResearchAuthor(s): Yu-Hsuan Shih, Maria Argos, Mary E. TurykAbstractBackgroundInorganic arsenic (iAs) is ubiquitous in the environment and has been linked to lung cancer and a number of non-malignant lung disease in both adults and children. However, most studies were conducted in populations with higher arsenic exposure levels in...
Thu, 05/23/2019 - 01:11
Publication date: Available online 21 May 2019 Environmental ResearchAuthor(s): Gudrun Koppen, Eva Govarts, Guido Vanermen, Stefan Voorspoels, Malarvannan Govindan, Marie-Christine Dewolf, Elly Den Hond, Pierre Biot, Ludwine Casteleyn, Marike Kolossa-Gehring, Gerda Schwedler, Jürgen Angerer, Holger M. Koch, Birgit K. Schindler, Argelia Castaño, Marta Esteban López, Ovnair Sepai, Karen Exley,...
Thu, 05/23/2019 - 00:00
Toxins, Vol. 11, Pages 292: Rapid and Simple Detection of Ochratoxin A using Fluorescence Resonance Energy Transfer on Lateral Flow Immunoassay (FRET-LFI) Toxins doi: 10.3390/toxins11050292 Authors: Hyun-Kyung Oh Hyou-Arm Joung Minhyuk Jung Hohjai Lee Min-Gon Kim The detection of mycotoxins is crucial because of their toxicity in plants, animals, and humans. It is very important...
Wed, 05/22/2019 - 12:02
Abstract Although sensory appeal influences peanut consumption, peanut varieties are mostly selected based on agronomic traits. As a result, the sensory properties of peanut varieties, especially in southern Africa, are not known. Therefore, the primary objective of the study was to determine the sensory properties of the Malawi peanut varieties and the volatile compounds associated with roasted...
Mon, 05/20/2019 - 11:47
Abstract For addressing the issues of pesticide residue analysis characterized by the trace levels of target analytes and the complexity of sample matrices, a selective extracting material, carbon nanotubes (CNTs)/β‐cyclodextrin (β‐CD) nanocomposite reinforced hollow fiber (HF), was developed. CNTs were chemically modified with β‐CD and then the resultant nanocomposite was immobilized into the...
Mon, 05/20/2019 - 11:20
The Zur-regulon is central to zinc homeostasis in the zinc-resistant bacterium Cupriavidus metallidurans. It comprises the transcription regulator Zur, the zinc importer ZupT, and three members of the COG0523 family of metal-chaperoning G3E-type GTPases, annotated as CobW1, CobW2, and CobW3. The operon structures of the zur and cobW1 loci were determined. To analyze the interplay between the Zur...
Mon, 05/20/2019 - 06:49
Abstract The fumigant toxicity of eight individual essential oils (EOs; basil, cinnamon, eucalyptus, mandarin, oregano, peppermint, tea tree, and thyme) and one binary combination (thyme and oregano) for control of the rice weevil, Sitophilus oryzae, were investigated. In bioassays, all individual and combined EOs were toxic to the rice weevil. Eucalyptus EO exhibited the highest toxicity among...
Mon, 05/20/2019 - 01:11
Publication date: 1 October 2019 , Volume 294Author(s): Chong Wang, Yunting Xie, Huiyuan Wang, Yun Bai, Chen Dai, Chunbao Li, Xinglian Xu, Guanghong ZhouAbstractThe effect of various beer marinades on formation of polycyclic aromatic hydrocarbons (PAHs) in charcoal-grilled chicken wings (CWs) and the active ingredients in beer contributing to inhibition of PAH formation were studied. The 1,1-...
Mon, 05/20/2019 - 01:11
Available online 16 May 2019 Author(s): Anibal Concha-meyer, Stephanie Grandon, Gloria Sepúlveda, Ricardo Diaz, José Antonio Yuri, Carolina TorresAbstractPesticide residues on foods are a global concern due to the impact on human health. Many countries have adopted regulations to establish Maximum Residue Levels (MRLs) to control use of pesticides. This study aimed to determine pesticide residues...
Mon, 05/20/2019 - 01:11
Available online 16 May 2019 Author(s): Saeed S. AlbaseerAbstractControl of residual levels of synthetic pyrethroids in fresh fruits and vegetables as well as in foodstuff made of fresh agricultural produces is of utmost importance. Apart from the need to more control on application of pesticides by farmers, simple and effective postharvest practices by consumers and/or manufacturers usually...

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