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Chemical contaminants

Wed, 10/07/2015 - 14:00
Abstract The aim of this study was to investigate the dynamic of volatile compounds in the Zaopei during the fermentation and distillation process by headspace solid-phase microextraction-gas chromatography mass spectrometry (HS-SPME-GCMS). Physicochemical properties analysis of Zaopei (fermented grains [FG], fermented grains mixed with sorghum [FGS], streamed grains [SG], and streamed grains...
Tue, 10/06/2015 - 01:31
Abstract BackgroundPangasius is a fish produced on a large scale in Vietnam and exported to many countries. Since the rivers contamination from human activities can affect the safety of this food, fish consumption can be an exposure to potentially toxic elements for humans. Thereby, the aim of this study was to assess arsenic, cadmium, lead, copper and chromium contents by atomic absorption...
Fri, 10/02/2015 - 11:12
DNA-based stable-isotope probing (DNA-SIP) was used in this study to investigate the uncultivated bacteria with benzo[a]pyrene (BaP) metabolism capacities in two Chinese forest soils (Mt. Maoer in Heilongjiang Province and Mt. Baicaowa in Hubei Province). We characterized three different phylotypes with responsibility for BaP degradation, none of which were previously reported as BaP-degrading...
Fri, 10/02/2015 - 11:12
Recent studies of natural environments have revealed vast genetic reservoirs of antibiotic resistance (AR) genes. Soil bacteria and human pathogens share AR genes, and AR genes have been discovered in a variety of habitats. However, there is little knowledge about the presence and diversity of AR genes in marine environments and which organisms host AR genes. To address this, we identified the...
Wed, 09/30/2015 - 03:20
Mercury and marine mammals Northern elephant seals accumulate MeHg from their prey in the North Pacific. Image courtesy of James Harvey (Moss Landing Marine Laboratories, Moss Landing, CA). Methylmercury (MeHg) is a neurotoxin that accumulates in marine food chains, posing a threat to environmental and human health. High Hg concentrations...
Wed, 09/30/2015 - 03:20
Methylmercury (MeHg) is a potent neurotoxin that is biomagnified approximately 1–10 million-fold in aquatic carnivores such as the Northern elephant seal (Mirounga angustirostris), whose excreta and molted pelage, in turn, constitute a source of environmental MeHg contamination at the base of marine food chains. The potential for this top-down contamination...
Wed, 09/30/2015 - 01:21
An ultrasensitive fluorescence immunoassay was developed for detection of bisphenol A (BPA). Herein, thiol-modified single-strand DNA (SH-ssDNAs) and anti-BPA antibodies were simultaneously conjugated with gold nanoparticles (AuNPs), and the fluorescein isothiocyanate-labeled single-strand DNA was hybridized with SH-ssDNAs to form a dual-codified probe. In the presence of BPA...
Sat, 09/26/2015 - 01:20
Publication date: 1 April 2016 , Volume 196 Author(s): Wronkowska Małgorzata, Piskuła Mariusz Konrad, Henryk Zieliński Changes in the formation of Maillard reaction products and antioxidant capacity of buckwheat, induced by roasting at 160 °C for 30, 40 and 50 min, were evaluated in the study. Furozine, was detected after roasting, in all buckwheat samples. Increase of FIC, the presence...
Sat, 09/26/2015 - 01:20
Publication date: Available online 25 September 2015 Food and Chemical Toxicology Author(s): German Cano-Sancho, Gemma Perelló, Ana Luisa Maulvault, António Marques, Martí Nadal, José L. Domingo This study was aimed at characterizing the bioaccessibility of arsenic (As), mercury (Hg) and methylmercury (MeHg) in commercial fish and seafood species widely consumed by the population...
Fri, 09/25/2015 - 01:29
Wei Wang, Yan He, Guodong Yu, Baolong Li, Darren W. Sexton, Thomas Wileman, Alexandra A. Roberts, Chris J. Hamilton, Ruoxi Liu, Yimin Chao, Yujuan Shan, Yongping Bao The potential cytotoxicity of cadmium selenide (CdSe) quantum dots (QDs) presents a barrier to their use in biomedical imaging or as diagnostic and therapeutic agents. Sulforaphane (SFN) is a chemoprotective compound derived from...
Wed, 09/23/2015 - 03:20
Elevated levels of neurotoxic methylmercury in Arctic food-webs pose health risks for indigenous populations that consume large quantities of marine mammals and fish. Estuaries provide critical hunting and fishing territory for these populations, and, until recently, benthic sediment was thought to be the main methylmercury source for coastal fish. New...
Wed, 09/23/2015 - 01:23
The Aspergillus japonicus β-fructofuranosidase catalyzes the industrially important biotransformation of sucrose to fructooligosaccharides. Operating at high substrate loading and temperatures between 50 and 60°C, the enzyme activity is negatively influenced by glucose product inhibition and thermal instability. To address these limitations, the solvent-exposed loop regions of the...
Fri, 09/18/2015 - 09:19
Journal of Agricultural and Food ChemistryDOI: 10.1021/acs.jafc.5b03327
Fri, 09/18/2015 - 01:24
Mohd Rehan, Ejaz Ahmad, Ishfaq A. Sheikh, Adel M. Abuzenadah, Ghazi A. Damanhouri, Osama S. Bajouh, Samera F. AlBasri, Mansour M. Assiri, Mohd A. Beg Exposure to toxic industrial chemicals that have capacity to disrupt the endocrine system, also known as endocrine disrupting chemicals (EDCs), has been increasingly associated with reproductive problems in human population. Bisphenol A (BPA; 4,4...
Thu, 09/17/2015 - 01:23
Publication date: 1 April 2016 , Volume 196 Author(s): Aurea Juliana Bombo Trevisan, Daniele de Almeida Lima, Geni Rodrigues Sampaio, Rosana Aparecida Manólio Soares, Deborah Helena Markowicz Bastos The influence of home cooking methods on the generation of Maillard reaction products (MRP) in beef was investigated. Grilling and frying hamburgers to an internal temperature below 90 °...
Thu, 09/17/2015 - 01:23
Publication date: Available online 16 September 2015 Food and Chemical Toxicology Author(s): Ana Djuric, Aida Begic, Borko Gobeljic, Ivana Stevanovic, Ana Pantelic, Goran Zebic, Vera Prokic, Bratislav Dejanovic, Milica Ninkovic, Ivana Stojanovic, Marina Pavlica, Dusan Djukic, Luciano Saso, Dragan Djurdjevic, Milos Pavlovic, Aleksandra Topic, Dragana Vujanovic...
Wed, 09/16/2015 - 01:25
Publication date: 1 April 2016 , Volume 196 Author(s): Mararlene Ulberg Pereira, Bernardete Ferraz Spisso, Silvana do Couto Jacob, Mychelle Alves Monteiro, Rosana Gomes Ferreira, Betânia de Souza Carlos, Armi Wanderley da Nóbrega This study aimed to validate a method developed for the determination of six antibiotics from the polyether ionophore class (lasalocid, maduramicin,...
Tue, 09/15/2015 - 01:21
Publication date: 1 April 2016 , Volume 196 Author(s): Tiele M. Rizzetti, Magali Kemmerich, Manoel L. Martins, Osmar D. Prestes, Martha B. Adaime, Renato Zanella In this study, different extraction procedures based on the QuEChERS method were compared for the multiresidue determination of pesticides in orange juice by ultra high performance liquid chromatography coupled to tandem...
Tue, 09/15/2015 - 01:21
Publication date: 1 April 2016 , Volume 196 Author(s): Niladri S. Chatterjee, Sagar Utture, Kaushik Banerjee, T.P. Ahammed Shabeer, Narayan Kamble, Suseela Mathew, K. Ashok Kumar This paper reports a selective and sensitive method for multiresidue determination of 119 chemical residues including pesticides and polyaromatic hydrocarbons (PAH) in high fatty fish matrix. The novel...
Mon, 09/14/2015 - 06:20
Publication date: January 2016 Source:LWT - Food Science and Technology, Volume 65 Author(s): Marcello Iriti, Elena Maria Varoni The first detection of melatonin in grapes appeared in 2006 with the questioning title ‘Melatonin content in grape: myth or panacea?’. Then, in a Letter to the Editor of Journal of Pineal Research, the lead journal covering all aspects of physiology,...
Sat, 09/05/2015 - 01:23
Publication date: Available online 4 September 2015 Food and Chemical Toxicology Author(s): Richard M. Evans, Martin Scholze, Andreas Kortenkamp The way in which mixture risk assessment (MRA) should be included in chemical risk assessment is a current topic of debate. We used data from 67 recent pesticide evaluations to build a case study using Hazard Index calculations to form risk...
Wed, 09/02/2015 - 01:23
The validation of a method to identify and quantify methylmercury and ethylmercury by liquid-liquid extraction with hexane and determination by using gas chromatography coupled to mass spectrometry was evaluated. The method was validated according to EU Commission Decision 2002/657/EC. Certified reference materials NIST 2976 (mussel tissue) and NMIJ 7402-a (cod fish tissue)...
Wed, 09/02/2015 - 01:23
The aim of this study was to propose a method for analysis of lead (Pb), cadmium (Cd), mercury (Hg) and arsenic (As) in polypropylene packaging intended for contact with ice cream and migration of these elements using the food itself and 3 % acetic acid as food simulant. Ten commercial samples of ice cream marketed in Campinas-São Paulo (Brazil) were used for the analysis....
Tue, 09/01/2015 - 01:25
Publication date: January 2016 , Volume 111 Author(s): Shreya Wani, Jeremy Barnes, Ian Singleton Fresh leafy produce, such as lettuce and coriander, are subject to post-harvest microbial contamination and decay. Because of increasing pesticide resistance and consumer pressures, alternative residue-free treatments, such as ozone, are being actively explored and encouraged to reduce...
Tue, 08/25/2015 - 01:23
Publication date: February 2016 , Volume 60 Author(s): Rui Yu, Qiang Liu, Jingshuang Liu, Qicun Wang, Yang Wang This study was designed to investigate organophosphorus pesticides (OPs) concentrations in fresh vegetables and estimate potential health risks to inhabitants. A total of 214 samples of seven types of vegetables were collected from Changchun, the capital of Jilin province...
Tue, 08/25/2015 - 01:23
Publication date: 1 March 2016 , Volume 194 Author(s): Jing Zhan, Jindong Li, Donghui Liu, Chang Liu, Genggeng Yang, Zhiqiang Zhou, Peng Wang A simple, rapid and effective method was developed based on matrix solid-phase dispersion (MSPD) for the determination of organochlorine pollutants including sixteen organochlorine pesticides (OCPs) and seven polychlorinated biphenyls (...
Tue, 08/25/2015 - 01:23
Publication date: February 2016 , Volume 60 Author(s): Cristina Galimberti, Ivan Corti, Massimo Cressoni, Vittorio M. Moretti, Simonetta Menotta, Umberto Galli, Donatella Cambiaghi The levels of cadmium (Cd), mercury (Hg) and lead (Pb) were evaluated in 251 samples of fish and fishery products randomly collected between January 2010 and December 2013 from products imported...
Sun, 08/23/2015 - 06:20
Publication date: January 2016 Source:LWT - Food Science and Technology, Volume 65 Author(s): Kunnitee Bundeesomchok, Aurore Filly, Njara Rakotomanomana, Pharkphoom Panichayupakaranant, Farid Chemat This study evaluated the performance of alternative green solvents, i.e. d -limonene, dimethylcarbonate (DMC), ethanol, ethyl acetate, ethyl lactate and methyltetrahydrofuran (MeTHF)...
Sun, 08/23/2015 - 06:20
Publication date: January 2016 Source:LWT - Food Science and Technology, Volume 65 Author(s): Elena Bartkiene, Ida Jakobsone, Iveta Pugajeva, Vadims Bartkevics, Daiva Zadeike, Grazina Juodeikiene The use of pseudo-cereals for wheat products making is to fortify the deficiency of nutritional value in wheat flour. However rich in proteins plant additives could increase acrylamide...
Tue, 08/18/2015 - 01:33
Bo Cui, Lei Feng, Zhenzhong Pan, Manli Yu, Zhanghua Zeng, Changjiao Sun, Xiang Zhao, Yan Wang, Haixin Cui Pesticides are essential agrochemicals used to protect plants from diseases, pests and weeds. However, the formulation defects of conventional pesticides cause food toxicity and ecological environmental problems. In this study, a novel, efficient and environmentally friendly formulation of...
Sat, 08/15/2015 - 01:28
Shuzhen Liu, Ligang Jiang, Tao Zhong, Shuhui Kong, Rongbin Zheng, Fengyun Kong, Cong Zhang, Lei Zhang, Liguo An Acrylamide (ACR) is a chemical compound with severe neurotoxicity, genotoxicity, carcinogenicity and reproductive toxicity. Recent studies showed that ACR impairs the function of reproductive organs, e.g., epididymis and testes. In vitro maturation of mouse oocyte is a sensitive assay...
Sat, 08/15/2015 - 01:28
Publication date: September 2015 , Volume 98, Issue 9 Author(s): D.L. Grooms, B. Norby, K.E. Grooms, E.N. Jagodzinski, R.J. Erskine, L.W. Halbert, J.F. Coetzee, L. Wulf, J.A. Rice Development and use of on-farm assays to detect antimicrobial residues in milk is important to reduce the risk of violative residues in marketed milk. The objective of this study was to evaluate...
Tue, 08/11/2015 - 03:20
Publication date: Available online 10 August 2015 Food and Chemical Toxicology Author(s): Katarzyna Mokra, Magdalena Kocia, Jaromir Michałowicz There are only a few studies that have assessed the effect of bisphenol A (BPA) on human blood cells and no study has been conducted to analyze the impact of BPA analogs on human leucocytes. In this study, we have investigated the effect of BPA...
Sun, 08/09/2015 - 03:20
Publication date: Available online 8 August 2015 Food and Chemical Toxicology Author(s): Bruna Dias Bernado, Joyce Zalotti Brandt, Tony Fernando Grassi, Lívia Teresa R. Silveira, Wellerson Rodrigo Scarano, Luis Fernando Barbisan Bisphenol A (BPA) is one hormonally active chemical with potential deleterious effects on reproductive organs, including breast and prostate. In contrast...
Sun, 08/09/2015 - 01:26
Publication date: February 2016 , Volume 60 Author(s): Ana Eugenia Thea, Darío Ferreira, Luis Alberto Brumovsky, Miguel Eduardo Schmalko This study describes the occurrence of polycyclic aromatic hydrocarbons (PAHs) in traditional yerba maté hot and cold infusions ( mate and tereré ), by monitoring the content of benz[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene...
Sun, 08/09/2015 - 01:26
Publication date: February 2016 , Volume 60 Author(s): Adam Vavrouš, Lukáš Vápenka, Jitka Sosnovcová, Kristina Kejlová, Karel Vrbík, Dagmar Jírová Food contact materials (FCMs) have been reported as a source of various xenobiotics. This study investigates the possibility of simultaneous analysis of 68 potential contaminants in paper FCMs, specifically phthalates, polycyclic...
Fri, 08/07/2015 - 01:26
Publication date: 1 March 2016 , Volume 194 Author(s): Martin Fischnaller, Rania Bakry, Günther K. Bonn A simple solid-phase extraction method for the enrichment of 5 bisphenol derivatives using hexagonal boron nitride (BN) was developed. BN was applied to concentrate bisphenol derivatives in spiked water samples and the compounds were analyzed using HPLC coupled to fluorescence...
Fri, 08/07/2015 - 01:26
Publication date: 1 March 2016 , Volume 194 Author(s): Xuhui Li, Qixing Zhou, Xiaoyin Sun, Wenjie Ren The concentration of nutrient elements is an important quality characteristic of vegetables, and the variation in accumulation among cultivars can provide clues about the mechanism of low accumulation of heavy metals. Pot-culture experiments were arranged under four cadmium (Cd)...
Thu, 08/06/2015 - 01:22
A novel method for sample preparation using an ozone-based process was optimized for the determination of Cd and Pb using electrothermal atomic absorption spectrometry (ET-AAS). Advanced oxidation processes, which involve the in situ generation of highly potent chemical oxidants, are a promising technology to accelerate the oxidation at room temperature and the degradation of organic matter. A...
Tue, 08/04/2015 - 20:00
Abstract Like Southeast Asian countries fermented fish is a well known strategy of food preservation in the Northeast region of India. Shidals are mostly preferred salt-free fermented fish product amongst all. Chemical and microbial composition, antioxidative potential, fatty acid profile and proteins profile in gel electrophoresis of shidals were studied. pH and total...
Mon, 08/03/2015 - 03:20
Trivalent organoarsenic compounds are far more toxic than either pentavalent organoarsenicals or inorganic arsenite. Many microbes methylate inorganic arsenite (As(III)) to more toxic and carcinogenic methylarsenite (MAs(III)). Additionally, monosodium methylarsenate (MSMA or MAs(V)) has been used widely as an herbicide and is reduced by microbial communities to MAs(III). Roxarsone (3-nitro-4-...
Thu, 07/30/2015 - 01:30
Michinori Kakisaka, Yutaka Sasaki, Kazunori Yamada, Yasumitsu Kondoh, Hirokazu Hikono, Hiroyuki Osada, Kentaro Tomii, Takehiko Saito, Yoko Aida Developing antiviral therapies for influenza A virus (IAV) infection is an ongoing process because of the rapid rate of antigenic mutation and the emergence of drug-resistant viruses. The ideal strategy is to develop drugs that target well-conserved,...

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