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

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https://www.readbyqxmd.com/read/30381010/direct-analysis-real-time-high-resolution-mass-spectrometry-for-triticum-species-authentication
#1
Brunella Miano, Laura Righetti, Roberto Piro, Chiara Dall'Asta, Silvia Folloni, Gianni Galaverna, Michele Suman
Due to favourable climate condition, Italy is a prominent producer of different wheat varieties. Several wheat baked goods are produced, but the most typical Italian foods, like pasta, pizza and bread, are made of durum and common wheat flour. Because of the great importance of wheat in the Italian food market, authenticity represents an essential quality parameter not only for the producers and regulatory bodies but also for consumers. The aim of our study was to test the effectiveness of an unconventional non-targeted method for the discrimination of Triticum species using direct analysis real time-high-resolution mass spectrometry (DART-HRMS)...
October 31, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30381003/analysis-of-diglycolic-acid-in-food-packaging-over-the-counter-products-direct-additive-carboxymethyl-cellulose-and-retail-foods
#2
Wendy Young, Lowri DeJager
Carboxymethyl cellulose (i.e. CMC or cellulose gum) is used as a direct additive for foods and drugs to change texture and act as a binder. CMC can also be a fluid absorbent used in food packaging and food contact materials. CMC and other carboxymethyl starches are synthesised by condensing glycolic acid with monochloroacetic acid. Diglycolic acid (DGA) is a byproduct produced by this condensation which cannot be completely removed. Currently, there are no analytical methods to accurately detect and quantify DGA in foods and food packaging materials...
October 31, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30352016/effects-of-consumer-use-practices-on-nanosilver-release-from-commercially-available-food-contact-materials
#3
Susana Addo Ntim, Samuel Norris, David G Goodwin, Jens Breffke, Keana Scott, Lipiin Sung, Treye A Thomas, Gregory O Noonan
Migration evaluation involving nano-enabled food contact materials (FCMs) mostly focuses on potential nanoparticle release from new unused products. This may not represent consumer use practices encountered by the FCMs in their lifecycle. In order to determine if product use impacts the release of nanoparticles or other FCM components, it is necessary to perform migration evaluations under typical consumer use scenarios. A quantitative assessment of nanoparticle release from a commercially available nanosilver-enabled cutting board was performed under five conditions intended to simulate consumer use...
October 23, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30352014/magnetic-graphene-oxide-nanocomposites-as-the-adsorbent-for-extraction-and-pre-concentration-of-azo-dyes-in-different-food-samples-followed-by-high-performance-liquid-chromatography-analysis
#4
Xiaoting Zhang, Jing Zhang, Wenqi Li, Yixin Yang, Peige Qin, Xuebin Zhang, Minghua Lu
This work presents a method of magnetic solid-phase extraction (MSPE) combined with high-performance liquid chromatography (HPLC) to analyse five synthetic azo dyes (tartrazine, amaranth, carmine, sunset yellow, allura red) in different food samples. The magnetic graphene oxide nanocomposite (GO@Fe3 O4 ) was prepared by a one-step solvothermal method and used as the sorbent for extraction and pre-concentration of azo dyes in food samples. The as-prepared GO@Fe3 O4 nanocomposite was characterised by transmission electron microscope, Fourier transform-infrared spectroscopy, X-ray diffraction, vibrating sample magnetometer, and Brunuer-Emmett-Teller analysis...
October 23, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30352013/total-determination-of-residual-flutolanil-and-its-metabolites-in-livestock-products-and-seafood-using-liquid-chromatography-tandem-mass-spectrometry
#5
Hiroyuki Kikuchi, Takatoshi Sakai, Satoru Nemoto, Hiroshi Akiyama
We have developed a simple and sensitive LC-MS/MS analytical method for the determination of residual flutolanil and its principal metabolites, including α,α,α-trifluoro-3'-hydroxy-o-toluanilide (M-4) and its conjugates, in livestock and seafood products. Both flutolanil and its metabolites contain the 2-(trifluoromethyl)benzoic acid (2-TFMBA) moiety. In this method, flutolanil and its metabolites are converted to 2-TFMBA by hydrolysis. The method involves direct hydrolysis with sodium hydroxide at 200°C, acidification, partitioning into a mixture of ethyl acetate-n-hexane (1:9, v/v), clean-up using a strong anion exchange cartridge (InertSep SAX), and then quantification using LC-MS/MS...
October 23, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30352010/plasma-and-tissue-disposition-of-danofloxacin-in-brown-trout-salmo-trutta-fario-after-intravenous-and-intramuscular-administrations
#6
Orhan Corum, Duygu Durna Corum, Ayse Er, Ertugrul Terzi, Kamil Uney
Plasma and muscle pharmacokinetics of danofloxacin were investigated after 10 mg/kg intravenous (IV, caudal vein) and intramuscular (IM, right epaxial muscles) administrations in 168 healthy brown trout (Salmo trutta fario) at 10°C-13°C. High-performance liquid chromatography was used to determine its plasma and muscle concentrations. Pharmacokinetic parameters were analysed with a non-compartmental model. After IV administration, elimination half-life (t1/2ʎz ), area under the concentration-time curve (AUC0-∞ ), mean residence time (MRT0-∞ ), volume of distribution at steady state, total body clearance in plasma and AUCMuscle /AUCPlasma ratio were 22...
October 23, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30352008/thermal-stability-of-t-2-and-ht-2-toxins-during-biscuit-and-crunchy-muesli-making-and-roasting
#7
Henning Sören Kuchenbuch, Stefanie Becker, Mareike Schulz, Benedikt Cramer, Hans-Ulrich Humpf
The mycotoxins T-2 and HT-2 toxin are frequently occurring food contaminants which are produced by Fusarium species. Humans and animals are mainly exposed to these substances by the consumption of contaminated oats, maize and wheat. For the production of crunchy muesli, bread and bakery products, these cereals undergo multiple processing steps, including baking, roasting and extrusion cooking. However, the influence of food processing on T-2 and HT-2 toxin levels is to date poorly understood. Thus, the effects of baking and roasting on both mycotoxins were evaluated during biscuit-, crunchy muesli- and toasted oat flakes-production under precise variation of various parameters: heating time and temperature as well as recipe formulation were varied in the range they are applied in the food processing industry...
October 23, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30352006/fungicides-in-red-wines-produced-in-south-america
#8
Thais de Souza Vargas, Nathacha de Andrade Salustriano, Bruna Klein, Wanderson Romão, Samantha Ribeiro Campos da Silva, Roger Wagner, Rodrigo Scherer
Although recent research has shown that pesticides can remain in wine, there is only legislation regarding the level of pesticides in grapes; no such regulations exist for wine. Therefore, the objective of this work was to evaluate the presence of fungicides in 190 wines produced in southern South America, as well as to present a new method for the quantification of dithiocarbamates. The fungicides were analysed by LC-MS/MS and GC/MS using validated methods according to the SANTE recommendations. The results for dithiocarbamates are expressed in mancozeb equivalents and are reported herein for the first time...
October 23, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30352003/the-compound-characteristics-comparison-ccc-approach-a-tool-for-improving-confidence-in-natural-compound-identification
#9
Luca Narduzzi, Jan Stanstrup, Fulvio Mattivi, Pietro Franceschi
Compound identification is the main hurdle in LC-HRMS-based metabolomics, given the high number of 'unknown' metabolites. In recent years, numerous in silico fragmentation simulators have been developed to simplify and improve mass spectral interpretation and compound annotation. Nevertheless, expert mass spectrometry users and chemists are still needed to select the correct entry from the numerous candidates proposed by automatic tools, especially in the plant kingdom due to the huge structural diversity of natural compounds occurring in plants...
October 23, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30335585/simultaneous-analysis-and-exposure-assessment-of-migrated-bisphenol-analogues-phenol-and-p-tert-butylphenol-from-food-contact-materials
#10
Joungboon Hwang, In-Ae Bae, Chanyong Lee, Subi Lee, Jae Chun Choi, Se-Jong Park, Jin-Hwan Hong, Gaeho Lee, MeeKyung Kim
A simple, rapid, and novel liquid chromatography tandem-mass spectrometry (LC-MS/MS) method was developed and validated to determine levels of eight bisphenol analogues (A, S, F, B, P, AF, AP, and Z), phenol, and p-tert-butylphenol migrated from food contact material (FCM) into food simulants. Method validation showed acceptable values in terms of linearity, precision, and accuracy. The limits of detection and quantification were 0.53-29.6 and 1.77-29.6 μg L-1 , respectively. Water, 4% acetic acid, 50% ethanol, and n-heptane were employed as food simulants for the migration tests, and the proposed method was applied to 234 articles of 11 FCMs including polycarbonate, polyethersulfone, polypropylene, and polyethyleneterephthalate, obtained from domestic markets and manufacturers in Korea...
October 18, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30312142/oligomers-in-polyethylene-furanoate-identification-and-quantification-approach-via-lc-uv-lc-ms-response-ratio
#11
Maria Hoppe, Pim De Voogt, Roland Franz
Polyethylene furanoate polymer is intended to be used as a food contact material. A PEF polymer sample was investigated for its oligomer composition by solvent extraction and using HRLC-MS. The 20 oligomers found were divided into four groups: group I contains cyclic oligomers consisting of furandicarboxylic acid and monoethylene glycol units, group II comprises cyclic oligomers consisting of furandicarboxylic acid, monoethylene glycol units and one diethylene glycol unit, group III are cyclic oligomers were two monoethylene glycol units are substituted by diethylene glycol units and group IV are linear oligomers consisting of furandicarboxylic acid and monoethylene glycol units...
October 12, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30028638/fumonisins-and-their-analogues-in-contaminated-corn-and-its-processed-foods-a-review
#12
Nestor Ponce-García, Sergio O Serna-Saldivar, Silverio Garcia-Lara
One of the food security problems faced worldwide is the occurrence of mycotoxins in grains and their foods. Fumonisins (FBs) are mycotoxins which are prevalent in corn (Zea mays L.) and its based foods. Their intake and exposure have been epidemiologically and inconclusively associated with oesophageal cancer and neural tube defects in humans, and other harmful health effects in animals. The toxic effects of FBs can be acute or chronic and these metabolites bioaccumulate mainly in liver and kidney tissues...
October 12, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30303766/selection-of-marker-peptides-from-casein-phosphopeptide-and-application-for-quantification-in-infant-formula
#13
Fang Fang, Xingkai Hao, Yajun Wu, Meirong Ying, Pengfei He, David Corcoran, Qi Chen
Casein phosphopeptides (CPPs) have been used worldwide as a nutritional supplement. However, the peptide components have been unknown; as a consequence, few quantification methods of CPP in infant formula were reported. This study introduced a quantification method based on peptide marker and corresponding peptide selection strategy using a simplified model with four commercial types of CPP. The peptides from four commercial CPPs were first identified. Due to the great variety of CPPs, two marker selection strategies were adopted: on one hand, universal marker peptide VLPVPQK can be used for the quantification of all four commercial CPPs, if the CPP can be obtained as a standard...
October 10, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30303764/analytical-determination-of-bisphenol-a-bpa-and-bisphenol-analogues-in-paper-products-by-lc-ms-ms
#14
Andrea Jurek, Erich Leitner
In this study a sensitive analytical method based on liquid chromatography-electrospray tandem mass spectrometry (LC-MS/MS) was developed for the simultaneous analysis of bisphenol A (BPA), bisphenol AF (BPAF), bisphenol B (BPB), bisphenol E (BPE), bisphenol F (BPF) and bisphenol S in different paper and board products, including virgin fibre samples and recycled samples. Analytes were extracted from the paper matrix using a simple solvent extraction and chromatographic separation was performed on a C18 core-shell (100 mm x 2...
October 10, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30303757/rapid-classification-of-virgin-and-recycled-eps-containers-by-fourier-transform-infrared-spectroscopy-and-chemometrics
#15
Xue-Chao Song, Qin-Bao Lin, Yi-Cai Zhang, Zhong Li, Yu Zeng, Zhi-Feng Chen
A rapid and sensitive method for classification of virgin and recycled expanded polystyrene (EPS) food containers was developed using Fourier transform infrared spectroscopy (FTIR) and chemometrics. This method includes preparing a transparent film by dissolution, examining by FTIR and developing classification models. The degradation of EPS containers occurring during the recycling process was reflected by the carbonyl region of the infrared spectrum which was used as variables for multivariate data analysis...
October 10, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30303754/immunohistochemistry-by-anti-cleaved-lamin-a-an-improved-approach-to-tackle-the-misuse-of-glucocorticoids-in-cattle
#16
Claudia Zanardello, Marzia Pezzolato, Katia Capello, Mario Botta, Elisa Baioni, Franco Mutinelli, Marta Vascellari, Elena Bozzetta
The illegal use of glucocorticoids (GCs) as growth-promoters (GPs) is prohibited in farm animals in the European Union because the strong pharmacological activity of most synthetic GCs produces residues that are dangerous for human consumption. Among the alternative methods proposed to increase the efficacy of official controls, histology was the technique of choice in Italy on account of its high performance level. The aim of this study was to evaluate the reliability of immunohistochemistry (IHC) using anti-cleaved-Lamin A antibody to enhance the performance of the histological test applied to GC-related microscopic changes in the thymus...
October 10, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30281407/effect-of-zingiber-officinale-roscoe-essential-oil-in-fungus-control-and-deoxynivalenol-production-of-fusarium-graminearum-schwabe-in-vitro
#17
Francine Maery Dias Ferreira, Elisa Yoko Hirooka, Flavio Dias Ferreira, Milena Veronezi Silva, Simone Aparecida Galerani Mossini, Miguel Machinski
Members of the Fusarium genus are capable of contaminating agricultural commodities, compromising the quality of maize and other grains, which leads to severe quality and yield losses. Contamination with mycotoxins is also a concern. Essential oils are possible alternatives to the use of synthetic pesticides for control of fungal contamination, as many have antifungal and anti-mycotoxigenic properties and are innocuous to human health. They also do not cause any sort of microbial resistance and do not promote environmental pollution...
October 3, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30281400/a-review-of-dietary-exposure-and-toxicological-information-on-epoxidised-soybean-oil-esbo-in-food-contact-applications
#18
Omari J Bandele, LaShonda T Cureton, Allan B Bailey, Adejoke Ogungbesan
Plasticisers have a long history of use in the industrial manufacture and processing of polymers for the purpose of increasing the flexibility and strength of the material. Approximately, 80-90% of the plasticiser market is devoted to the production of PVC, a highly versatile thermoplastic used to produce both rigid and flexible articles. Many types of plasticisers, including ortho-phthalate esters (OPE), can be added to PVC to impart flexibility. Recently, alternatives to OPEs, such as epoxy esters and aliphatic adipates, are becoming more prevalent for use in PVC-based food-contact articles...
October 3, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30281398/effervescent-assisted-dispersive-liquid-liquid-microextraction-based-on-the-solidification-of-floating-organic-droplets-for-the-determination-of-fungicides-in-vinegar-and-juice
#19
Xu Jing, Jiaying Zhang, Junling Zhu, Zhenjia Chen, Li Yi, Xiaowen Wang
A method of effervescent-assisted dispersive liquid-liquid microextraction based on the solidification of a floating organic droplet is reported. This approach was used to measure the fungicides myclobutanil, tebuconazole and epoxiconazole in vinegar and juice. Acidic vinegar and juice reacted with the carbonate to produce effervescence in situ, which then promoted contact of the sample with the extraction solvent. The 1-dodecanol extraction solvent helped solidify the floating organic droplets and could be fully dispersed by effervescence...
October 3, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30257137/suitability-of-the-ames-test-to-characterise-genotoxicity-of-food-contact-material-migrates
#20
Bernhard Rainer, Elisabeth Pinter, Thomas Czerny, Elisabeth Riegel, Christian Kirchnawy, Maricel Marin-Kuan, Benoît Schilter, Manfred Tacker
Non-intentionally added substances (NIAS) are chemical impurities which can migrate from packaging materials (FCM) into food. Safety assessment of NIAS is required by European law, but currently there is no comprehensive testing strategy available. In this context, one key element is to get insight on the potential presence of genotoxic NIAS in FCM migrates. This raises questions about the limit at which genotoxins can be detected in complex mixtures such as FCM migrates, and if such limits of detection (LOD) would be compatible with safety...
September 26, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
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