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Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment

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https://www.readbyqxmd.com/read/28795907/synergy-of-a-combination-of-nisin-and-citric-acid-against-staphylococcus-aureus-and-listeria-monocytogenes
#1
Xingchen Zhao, Zhen Zhen, Xinyang Wang, Na Guo
Food-borne diseases caused by pathogens, such as Staphylococcus aureus and Listeria monocytogenes, have for a long time attracted intensive worldwide attention from scientific researchers, food industries, and food safety authorities. Nisin (NS) is the only bacteriocin used worldwide as a GRAS food preservative, while citric acid (CA) has an unrestricted use in foods since it has GRAS status. In this study, synergistic interactions of NS combined with CA against S. aureus and L. monocytogenes were studied by the checkerboard microdilution method, with fractional inhibitory concentration index values ranging from 0...
August 10, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28795866/dioxins-and-pcbs-in-ostrich-meat-and-eggs-levels-and-implications
#2
Jadwiga Piskorska-Pliszczynska, Paweł Struciński, Szczepan Mikołajczyk, Marek Pajurek, Sebastian Maszewski, Wojciech Jerzy Pietron
Although consumption of eggs is an essential part of our diet, limited information is available for table eggs other than those laid by hens. The aim of our study was to determine concentrations of PCDD/Fs, DL- and NDL-PCBs in ostrich eggs and meat available on the Polish market in order to obtain baseline information on the current status of these pollutants in comparison to poultry products. Obtained data were compared to the binding EU limits set for chicken eggs and meat. The levels of individual PCDD/Fs and PCBs congeners varied considerably...
August 10, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28795656/development-and-validation-of-multi-residue-analysis-for-tetracycline-antibiotics-in-feed-by-high-performance-liquid-chromatography-coupled-to-mass-spectrometry
#3
Ewelina Patyra, Krzysztof Kwiatek
A new multi-residue method for the analysis of the tetracycline antibiotics oxytetracycline, tetracycline, chlortetracycline, and doxycycline was developed and validated for animal feed. After extraction with 0.1M Na2EDTA-McIlvaine buffer (pH 4), the samples were centrifuged, purified by SPE (Strata-X-CW cartridges) and analyzed by high-performance liquid chromatography coupled to mass spectrometry. Validation of the method was performed according to the guidelines indicated in Commission Decision 2002/657/EC...
August 10, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28795644/efficiency-of-organic-acid-preparations-for-the-elimination-of-naturally-occurring-salmonella-in-feed-material
#4
Sonja Axmann, Veronika Kolar, Andreas Adler, Irmengard Strnad
Salmonella can enter animal stocks via feedstuffs, thus posing not only an infection risk for animals, but also threatening to contaminate food of animal origin and finally humans. Salmonella contamination in feeding stuffs is still a recurring and serious issue in animal production (especially for poultry sector) and is regularly detected upon self-monitoring by feed companies (self-checks) and official inspections authorities. Operators within the feed chain in certain cases need to use hygienic condition enhancers, such as organic acids, to improve the quality of feed for animal nutrition providing additional guarantees for the protection of animal and public health...
August 10, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28786343/evaluation-of-the-tlc-quantification-method-and-occurrence-of-deoxynivalenol-in-wheat-flour-of-southern-brazil
#5
Denise Felippin de Lima Rocha, Melissa Dos Santos Oliveira, Eliana Badiale Furlong, Alexander Junges, Natalia Paroul, Eunice Valduga, Geciane Backes Toniazzo, Jamile Zeni, Rogério Luis Cansian
We have evaluated a QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) extraction method for use with a thin-layer chromatography (TLC) quantification procedure for deoxynivalenol (DON). We have also surveyed DON occurrence in wheat flour from the southern region of Brazil. Forty-eight wheat flour samples were analyzed, divided into two different harvest lots, each consisting of 24 different brands. The detection and quantification limits of the method were 30 and 100 ng of DON on the TLC plate. The various concentrations of DON presented high linearity (R(2) = 0...
August 8, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28783008/risk-assessment-of-patulin-intake-through-apple-based-food-by-infants-and-preschool-children-in-serbia
#6
Ljilja Torović, Nina Dimitrov, Ricardo Assunção, Paula Alvito
This study reports for the first time in Serbia the occurrence of patulin in apple-based food and the risk assessment associated with patulin intake by infants and preschool children. In total, 214 samples of infant fruit juices (48), infant purée (66) and juices for children (small package with straw, 100) were collected over three years (2013-2015) and analysed using high performance liquid chromatography with ultraviolet detection. Patulin was found in 43.8% of infant juices and 16.7% of infant purée with all values below the legal limit of 10 μg kg(-1) (maximum 8...
August 7, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28783006/development-of-a-confirmatory-method-for-detecting-recombinant-bovine-somatotropin-in-plasma-by-immunomagnetic-precipitation-followed-by-ultra-high-performance-liquid-chromatography-coupled-to-tandem-mass-spectrometry
#7
Christelle Robert, Anne-Catherine Huet, Célia Suárez-Pantaleón, Amaury Brasseur, Philippe Delahaut, Nathalie Gillard
Recombinant bovine somatotropin (rbST), a synthetic growth hormone, is used to stimulate growth and enhance milk production in dairy cows. Both its use and the sale of dairy products from treated animals are prohibited in the European Union, Japan, Australia, New Zealand, and Canada, but authorised in several countries (e.g. the USA, Brazil). Screening methods involve detecting anti-rbST antibodies (biomarkers) in treated cows. Confirmatory methods are required to prove rbST abuse. The major challenges in determining rbST are its potentially low levels, its high similarity to native bST, and matrix interferences...
August 7, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28783003/probabilistic-dietary-exposure-to-ethyl-carbamate-from-fermented-foods-and-alcoholic-beverages-in-the-korean-population
#8
B Choi, D Ryu, C-I Kim, J-Y Lee, A Choi, E Koh
The occurrence of ethyl carbamate was investigated in fermented foods and alcoholic beverages of the Korean total diet study. The concentrations of ethyl carbamate ranged from not-detected to 166.5 μg kg(-1). Dietary exposure to ethyl carbamate was estimated by the probabilistic method. Estimated intakes of ethyl carbamate from foods and alcoholic beverages were 4.12 ng kg(-1) body weight (bw) per day for average consumers and 12.37 ng kg(-1) bw per day for 95(th) percentile high consumers. The major foods contributing to ethyl carbamate exposure were soy sauce (63%), followed by maesilju (plum liqueur, 30%), whisky (5%), and bokbunjaju (black raspberry wine, 2%)...
August 7, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28783002/non-targeted-workflow-for-identification-of-antimicrobial-compounds-in-animal-feed-using-bioassay-directed-screening-in-combination-with-lc-hrms
#9
Robin S Wegh, Bjorn J A Berendsen, Wilma D M Driessen-van Lankveld, Mariël G Pikkemaat, Tina Zuidema, Leen A van Ginkel
A non-targeted workflow is reported for the isolation and identification of antimicrobial active compounds using bioassay-directed screening and liquid chromatography coupled to high resolution mass spectrometry. Suspect samples are extracted using a generic protocol and fractionated using two different liquid chromatography conditions (A and B). The behavior of the bioactive compound under these different conditions yields information about the physicochemical properties of the compound and introduces variations in co-eluting compounds in the fractions which is essential for peak picking and identification...
August 7, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28783000/multiclass-mycotoxin-analysis-in-edible-oils-using-a-simple-solvent-extraction-method-and-liquid-chromatography-with-tandem-mass-spectrometry
#10
Taeyong Eom, Hyun-Deok Cho, Junghyun Kim, Mihee Park, Jinyoung An, Moosung Kim, Sheen-Hee Kim, Sang Beom Han
A simple and rapid method for the simultaneous determination of eleven mycotoxins-aflatoxins B1, B2, G1, and G2; fumonisins B1, B2, and B3; ochratoxin A; zearalenone; deoxynivalenol; and T-2 toxin-in edible oils was established using liquid chromatography tandem mass spectrometry (LC-MS/MS). In this study, QuEChERS, QuEChERS with dispersive liquid-liquid microextraction, and solvent extraction were examined for sample preparation. Among these methods, solvent extraction with a mixture of formic acid/acetonitrile (5/95, v/v) successfully extracted all target mycotoxins...
August 7, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28782989/longitudinal-modelling-of-the-exposure-of-young-uk-patients-with-pku-to-acesulfame-k-and-sucralose
#11
J Aaron O'Sullivan, Sandrine Pigat, Cian O'Mahony, Michael J Gibney, Aideen I McKevitt
Artificial sweeteners are used in protein substitutes intended for the dietary management of inborn errors of metabolism (Phenylketonuria, PKU) to improve the variety of medical foods available to patients and ensure dietary adherence to the prescribed course of dietary management. These patients can be exposed to artificial sweeteners from the combination of free and prescribed foods. Young children have a higher risk of exceeding acceptable daily intakes (ADI) for additives than adults due to higher food intakes per kg body weight...
August 7, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28782987/a-review-of-the-current-situation-of-aflatoxin-m1-in-cow-s-milk-in-serbia-risk-assessment-and-regulatory-aspects
#12
Dragan R Milićević, Danka Spirić, Tatjana Radičević, Branko Velebit, Srdjan Stefanović, Lazar Milojević, Saša Janković
The aim of this systematic review is to provide information regarding the incidence and levels of Aflatoxin M1 (AFM1) in raw and heat processed cow's milk in Serbia during 2015-2016 and to compare these with collected data on the occurrence of AFM1 in raw milk and dairy products during last decade in our region. Estimation of Dietary Exposure (EDI) and Hazard Index (HI) calculations for different age groups of the population were also carried out, based on the AFM1 content of the milk samples and on available food consumption data in Serbia...
August 7, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28770655/antioxidant-migration-resistance-of-siox-layer-in-siox-pla-coated-film
#13
Chongxing Huang, Yuan Zhao, Hongxia Su, Ronghua Bei
As novel materials for food contact packaging, inorganic silicon oxide (SiOx) films are high barrier property materials that have been developed rapidly and have attracted the attention of many manufacturers. For the safe use of SiOx films for food packaging it is vital to study the interaction between SiOx layers and food contaminants, as well as the function of a SiOx barrier layer in antioxidant migration resistance. In this study, we deposited a SiOx layer on polylactic acid (PLA)-based films to prepare SiOx/PLA coated films by plasma-enhanced chemical vapor deposition (PECVD)...
August 3, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28748739/multiplex-pcr-assay-discriminates-rabbit-rat-and-squirrel-meat-in-food-chain
#14
Mohammad Nasir Uddin Ahamad, Md Eaqub Ali, M A Motalib Hossain, Asing Asing, Sharmin Sultana, M H A Jahurul
Rabbit meat is receiving increasing attention because it contains more proteins and less fat. On the other hand, squirrel meat is served in aristocrat meals in certain countries and so it is sold at higher prices. The other side of the coin is rat meat that has family ties with rabbit and squirrel but possesses huge threats to public health because it is a potential career of several zoonotic organisms. Recently, rat meat was mislabeled and sold as lamb after chemical modification. Thus the chances of rabbit and squirrel meat substitution by rat meat cannot be ruled out...
July 27, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28737099/concentrations-and-human-health-risk-assessment-of-ddt-and-its-metabolites-in-free-range-and-commercial-chicken-products-from-kwazulu-natal-south-africa
#15
L A Thompson, Y Ikenaka, Y B Yohannes, J J van Vuren, V Wepener, N J Smit, W S Darwish, S M M Nakayama, H Mizukawa, M Ishizuka
Organochlorine pesticides such as dichlorodiphenyltrichloroethane (DDT) have been used in agriculture and for disease control purposes over many decades. Reports suggest that DDT exposure may result in a number of adverse effects in humans. In the KwaZulu-Natal Province of South Africa, DDT is sprayed annually in homes (indoor residual spraying) to control the mosquito vector of malaria. In the northern part of the Province, samples of free-range chicken meat (n = 48) and eggs (n = 13), and commercially-produced chicken meat (n = 6) and eggs (n = 11) were collected and analysed...
July 24, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28730944/integrating-bioassays-and-analytical-chemistry-as-an-improved-approach-to-support-safety-assessment-of-food-contact-materials
#16
Julien Veyrand, Maricel Marin-Kuan, Claudine Bezencon, Nancy Frank, Violaine Guérin, Sander Koster, Hélia Latado, Julie Mollergues, Amaury Patin, Dominique Piguet, Patrick Serrant, Jesus Varela, Benoît Schilter
Food contact materials (FCM) contain chemicals which can migrate into food and result in human exposure. Although it is mandatory to ensure that migration does not endanger human health, there is still no consensus on how to pragmatically assess the safety of FCM since traditional approaches would require extensive toxicological and analytical testing which are expensive and time consuming. Recently, the combination of bioassays, analytical chemistry and risk assessment has been promoted as a new paradigm to identify toxicologically relevant molecules and address safety issues...
July 21, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28722538/dispersed-synthesis-of-uniform-fe3o4-magnetic-nanoparticles-via-in-situ-decomposition-of-iron-precursor-along-cotton-fiber-for-sudan-dyes-analysis-in-food-samples
#17
Yassine Bentahir, Said Elmarhoum, Rachid Salghi, Manuel Algarra, Angel Ríos, Mohammed Zougagh
Fe3O4 magnetic nanoparticles, with a negative charge surface, are known to have efficient adsorbent properties, but they tend to be agglomerated into larger aggregates or flocs, which can cause loss of specific area. The addition of cotton fiber, as a stabilizer in preparation of the Fe3O4 nanoparticles, is able to efficiently reduce particle aggregation, and thus, effective particle size, resulting in much greater specific surface area and adsorption sites. Fe3O4 nanoparticles synthesis was accomplished by in-situ high temperature decomposition of the precursor ferric ion in the presence of cotton fiber and ethylene glycol solvent...
July 19, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28712345/post-processing-optimization-of-electrospun-sub-micron-poly-3-hydroxybutyrate-fibers-to-obtain-continuous-films-of-interest-in-food-packaging-applications
#18
A Cherpinski, S Torres-Giner, L Cabedo, J M Lagaron
Polyhydroxyalkanoates (PHAs) are one of the most researched family of biodegradable polymers based on renewable materials due to their thermoplastic nature and moisture resistance. The present study was targeted to investigate the preparation and characterization of poly(3-hydroxybutyrate) (PHB) films obtained through the electrospinning technique. To convert them into continuous films, of interest in for instance packaging, the electrospun fiber mats were subsequently post-processed by different physical treatments to optimize their physical performance...
July 17, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28707572/erratum
#19
(no author information available yet)
No abstract text is available yet for this article.
July 14, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28513302/controlled-release-of-1-methylcyclopropene-from-its-functionalised-electrospun-fibres-under-constant-and-linearly-ramped-humidity
#20
Tze Loon Neoh, Hermawan Dwi Ariyanto, Patricia Menéndez Galvan, Hidefumi Yoshii
The methodology to electrospin polystyrene (PS) fibres functionalised with the inclusion complex between 1-methylcyclopropene (1-MCP) and α-cyclodextrin (α-CD) has been developed successfully. Due to limited availability, α-CD crystals instead of 1-MCP/α-CD complex were suspended in the electrospinning (ES) solutions to investigate the ES process. The ES solutions were characterised in terms of viscosity, conductivity and surface tension. Meanwhile, the fibres were subjected to scanning electron microscopy...
July 14, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
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