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

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https://www.readbyqxmd.com/read/28100121/effects-of-bovine-pregnancy-on-the-fatty-acid-composition-of-milk-significance-for-humans-needs
#1
R Barreiro, P Regal, M Díaz-Bao, B I Vázquez, A Cepeda
Milk from forty Holstein dairy cows (twenty pregnant and twenty non-pregnant) was collected from two different farms in Galicia (Spain). The differences in the fatty acid composition of two groups of cows (pregnant and non-pregnant) was studied to determine whether pregnancy status is a determinant factor that can alter the fatty acid profile of milk. Gas-chromatography (GC) coupled to flame ionization detection (FID) was used for determination of the fatty acids. Difference in the milk fatty acids between pregnant and non-pregnant cows were pronounced showing statistically significant differences for some fatty acids and the total saturated and monounsaturated fatty acids...
January 19, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28093042/chloramphenicol-stereoisomers-need-to-be-distinguished-consequences-observed-from-a-proficiency-test
#2
Mark Sykes, Tobias Czymai, Thomas Hektor, Matthew Sharman, Michael Knaggs
Although the use of chloramphenicol (CAP) as a veterinary drug is banned in the European Union and many other countries, monitoring for CAP residues in food is routine. Positive detections are few, but taken extremely seriously. European Union laboratories analysing for CAP should validate methods according to European Commission Decision 2002/657/EC, must be accredited to ISO 17025, and will generally participate in proficiency testing (PT) schemes, such as those offered by the Food Analysis Performance Assessment Scheme (FAPAS®)...
January 17, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28084174/erratum
#3
(no author information available yet)
No abstract text is available yet for this article.
January 13, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28077027/probabilistic-acute-risk-assessment-of-cumulative-exposure-to-organophosphorus-and-carbamate-pesticides-from-dietary-vegetables-and-fruits-in-shanghai-populations
#4
Fan Li, Yaqun Yuan, Pai Meng, Min Wu, Shuguang Li, Bo Chen
Organophosphorus (OPs) and carbamate pesticides (CPs) are among the most widely used pesticides in China, playing a major role in protecting agricultural commodities. In this study, we determined the cumulative acute exposure to organophosphate and carbamate pesticides of Shanghai residents from vegetables and fruits (VFs). The food consumption data were obtained from the Shanghai Food Consumption Survey (SHFCS) of 2012-2014 including a total of 1973 participants aged 2-90 years. The pesticide residue data were obtained from the Shanghai monitoring program during 2008-2011 with 34 organophosphates and 11 carbamates analyzed in a total of 5335 samples of VFs...
January 12, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28077022/feasibility-of-a-novel-multispot-nanoarray-for-antibiotic-screening-in-honey
#5
Sara E McNamee, Giulia Rosar, Lidija Persic, Christopher T Elliott, Katrina Campbell
Practical solutions for multiple antibiotic determination in food is required by the food industry and regulators for cost effective screening purposes. This study describes the feasibility in development and preliminary performance of a novel multispot nanoarray for antibiotic screening in honey. Using a multiplex approach the metabolites of the four main nitrofuran antibiotics including morpholinomethyl-2-oxazolidone (AMOZ), 3-amino-2-oxazolidinone (AOZ), semicarbazide (SEM), 1-aminohydantoin (AHD) and chloramphenicol (CAP) were simultaneously detected...
January 12, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28067137/residue-depletion-of-ivermectin-in-broiler-poultry
#6
Nora Mestorino, Daniel Buldain, Andrea Buchamer, Lihuel Gortari, Martín Daniele, María Laura Marchetti
Helminth infections are widespread in the poultry industry. There is evidence of extra-label use of some drugs, such as ivermectin (IVM) in broiler poultry. Pharmacokinetic and residual studies of IVM in poultry, however, are rather scarce. Our aim was to determine time restrictions for broiler chickens fed with balanced feed mixed with IVM for 21 days, could be in acceptable residual levels for consumption as established by the EU. Sixty 1-day old chicks were fed with food supplemented with IVM at 5 mg/kg feed for 21 days...
January 9, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28067117/furan-in-commercial-baby-foods-from-the-spanish-market-estimation-of-daily-intake-and-risk-assessment
#7
M S Altaki, F J Santos, L Puignou, M T Galceran
The occurrence of furan in commercial baby food samples from the Spanish market was evaluated using an automated headspace solid-phase microextraction method coupled to gas chromatography-mass spectrometry (HS-SPME-GC-MS). A total of seventy six baby food samples including infant formula, baby cereals, fruit in cans and/or jars, vegetables, meat, and fish, were surveyed for furan content. The lowest concentration of this compound was found in infant formula (<0.02 - 0.33 ng mL(-1)), and cereal-based food (0...
January 9, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28008798/risk-assessment-of-dietary-exposure-to-tryptamine-for-the-austrian-population
#8
Nadja Wüst, Elke Rauscher-Gabernig, Johann Steinwider, Friedrich Bauer, Peter Paulsen
Tryptamine acts as a neuromodulator and vasoactive agent in the human body. Dose-response data on dietary tryptamine are scarce and neither a toxicological threshold value nor tolerable levels in foods have been established so far. This paper reviews dose-response characteristics and toxicological effects of tryptamine as well as tryptamine contents in food, estimates dietary exposure of Austrian consumers, and calculates risk-based maximum tolerable limits for food categories. A dose without effect of 8 mg kg(-1) body weight day(-1) was derived from literature data...
December 23, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28008796/isolation-and-identification-of-a-novel-sildenafil-analogue-adulterant-in-herbal-products
#9
Ya-Tze Lin, Yen-Chun Huang, Hui-Chun Lee, Chen-Hsiang Liao, Yun-Lian Lin, Chia-Fen Tsai, Hwei-Fang Cheng
A novel sildenafil analogue found in herbal products by a routine drug-adulteration screening programme was isolated by column chromatography. On the basis of extensive 1D- and 2D-nuclear magnetic resonance (NMR) spectroscopy and mass spectral analysis, the structure of a new compound YJ-07 was established as 1-[4-ethoxy-3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl) benzenesulfonamide. It common name is aminosildenafil.
December 23, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27951749/confirmation-of-%C3%AE-agonist-residues-in-bovine-retina-and-liver-using-hplc-ms-ms-and-evaluation-of-matrix-dependent-problems
#10
Patricia Regal, Mónica Díaz-Bao, Rocío Barreiro, Beatriz I Vázquez, Alberto Cepeda
β-Agonists or β-adrenergic agonists are synthetic drugs sometimes used for therapeutic purposes in veterinary medicine. However, these compounds also belong to a class of illegal growth promoters that decrease the fat content in farm animals. The purpose of this study was to develop an analytical LC-MS/MS confirmatory method for the detection of nine β-agonists in bovine retina and liver tissues. The obtained CCα values ranged from 0.29 to 1.54 µg kg(-)(1) in retina and from 0.03 to 0.18 µg kg(-)(1) in liver, and CCβ values from 0...
December 23, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28004610/endogenous-level-of-acetic-acid-in-yellowfin-tuna-thunnus-albacares-a-pilot-study-about-a-possible-controversy-on-its-residue-nature
#11
Luca Maria Chiesa, Elisa Pasquale, Sara Panseri, Domenico Britti, Renato Malandra, Roberto Villa, Francesco Arioli
A method based on headspace solid-phase microextraction (SPME) followed by GC-MS analysis was developed for the determination of underivatized acetic acid in fresh tuna fish muscle. Parameters such as the fibre selected and the extraction time and temperature were optimised and the linearity, detection limits and precision of the whole analytical procedure were assessed. The method was then applied to determine the acetic acid concentration in fresh Yellowfin tuna muscles (Thunnus albacares), in order to evaluate the endogenous level and its variations during the shelf life under different storage conditions...
December 22, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28004609/occurrence-of-3-monochloropropanediol-esters-and-glycidyl-esters-in-commercial-infant-formulas-in-the-united-states
#12
Jessica Leigh, Shaun MacMahon
This work presents occurrence data for fatty acid esters of 3-chloro-1,2-propanediol (3-MCPD) and glycidol in 98 infant formula samples purchased in the United States. These contaminants, which result from the industrial processing of edible oils, are considered potentially carcinogenic and/or genotoxic, making their presence in refined oils and foods containing these oils a potential health risk. Because refined oils serve as the primary fat source in infant formula, particular attention has focused on developing methodology to extract and quantify MCPD and glycidyl esters in infant formula in order to produce occurrence data for risk assessment purposes...
December 22, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28004607/comparison-of-food-colour-regulations-in-the-eu-and-the-us-review-of-current-provisions
#13
Sari Lehto, Maria Buchweitz, Alexandra Klimm, Raphaela Strassburger, Cato Bechtold, Franz Ulberth
This review describes the EU and the US regulations applicable to food colours. Despite the different regulatory frameworks, the overall approach is similar, based on well-established risk assessment procedures and risk management measures. However, differences impacting free movement of goods can be found in the details and implementation of regulations. Using additives approved only in the US or in the EU implies that producers aiming to export need to adjust their product composition to the export market...
December 22, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27998244/six-open-questions-about-the-migration-of-engineered-nano-objects-from-polymer-based-food-contact-materials-a-review
#14
Maryam Jokar, Gitte Alsing Pedersen, Katrin Loeschner
The use of nanomaterials in food-contact applications has created enormous interest in recent years. The potential migration of engineered nano-objects (ENOs) from food-contact materials (FCMs) is one of the most important concerns regarding potential human exposure to ENOs and health risks. Current research focusing on FCMs has often reached inconsistency regarding migration of ENOs. The scope of this critical review is to give a concise overview of the most relevant aspects of the subject, and to identify and discuss the major open questions in relation to migration of ENOs from FCMs...
December 22, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27915584/single-laboratory-validation-of-an-lc-ms-ms-method-for-determining-florfenicol-ff-and-florfenicol-amine-ffa-residues-in-chicken-feathers-and-application-to-a-residue-depletion-study
#15
J Cornejo, E Pokrant, R Riquelme, C Briceño, A Maddaleno, C Araya-Jordán, B San Martin
A suitable analytical method is required to study the behaviour of florfenicol (FF) and its metabolite florfenicol amine (FFA) in broiler's feathers. An LC-MS/MS method was developed, assessed and intra-laboratory-validated for FF and FFA analyses. We chose cloramphenicol-d5 as an internal standard, acetone as a solvent for the extraction of the analytes and dichloromethane for the clean-up. Through LC-MS/MS analysis, we established a detection limit of 20 μg kg(-)(1), as well as calculated quantification limits of 24...
December 21, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27915587/determination-of-testosterone-esters-and-estradiol-esters-in-bovine-and-porcine-blood-serum
#16
Martina Rejtharová, Libor Rejthar, Katarína Čačková
Monitoring of steroid esters in blood serum is desirable in order to detect the possible illegal use of natural hormones as growth promoters. A method for the determination of testosterone propionate, testosterone benzoate, testosterone isocaproate, testosterone decanoate and estradiol benzoate in bovine and porcine blood serum was developed. The procedure consists of protein precipitation and removal of phospholipids using a HybridSPE®-Phospholipid column followed by clean-up on a hydrophilic modified styrene polymer Supel(TM)-Select HLB column and LC-MS/MS measurement...
December 20, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27981891/lc-ms-ms-methods-for-albendazole-analysis-in-feed-and-its-metabolite-residues-in-fish-fillet-and-a-leaching-study-in-feed-after-alternative-procedure-for-drug-incorporation
#17
Zenaís Busatto, Agnaldo Fernando Baldo da Silva, Osvaldo de Freitas, Jonas Augusto Rizzato Paschoal
This paper describes the development of analytical methods for the quantification of albendazole (ABZ) in fish feed and ABZ and its main known metabolites (albendazole sulfoxide, albendazole sulfone and albendazole aminosulfone) in fish fillet employing LC-MS/MS. In order to assess the reliability of the analytical methods, evaluation was undertaken as recommended by related guides proposed by the Brazilian Ministry of Agriculture for analytical method validation. The calibration curve for ABZ quantification in feed showed adequate linearity (r > 0...
December 16, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27915582/lc-ms-ms-methods-for-sulfadimethoxine-and-ormetoprim-analysis-in-feed-and-fish-fillet-and-a-leaching-study-for-feed-after-alternative-procedures-for-the-incorporation-of-drugs
#18
Ana Paula Fais, Rodolfo Scarpino Barboza Franco, Agnaldo Fernando Baldo da Silva, Osvaldo de Freitas, Jonas Augusto Rizzato Paschoal
This paper describes the method development for sulfadimethoxine (SDM) and ormetoprim (OMP) quantitation in fish feed and fish fillet employing LC-MS/MS. In order to assess the reliability of the analytical method, valuation was undertaken as recommended by guidelines proposed by the Brazilian Ministry of Agriculture. The calibration curve for the quantification of both drugs in feed showed adequate linearity (r > 0.99), precision (CV < 12%) and trueness ranging from 97% to 100%. The method for the determination of SDM and OMP residues in fish fillet involved a simple sample preparation procedure that had adequate linearity (r > 0...
December 16, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27879173/residue-depletion-of-oxytetracycline-otc-and-4-epi-oxytetracycline-4-epi-otc-in-broiler-chicken-s-claws-by-liquid-chromatography-tandem-mass-spectrometry-lc-ms-ms
#19
J Cornejo, E Pokrant, D Araya, C Briceño, H Hidalgo, A Maddaleno, C Araya-Jordán, B San Martin
Antibiotics are widely used in poultry production for the treatment of bacterial diseases. However, residues may remain in products and by-products destined for human consumption or animal feeding. The claws of chickens, which are a by-product of the poultry industry, can directly or indirectly enter the food chain as meals destined to feed other productive animals. Thus, it becomes necessary to determine and quantify antimicrobial residues present in this matrix. The objective of the study was to assess the depletion of oxytetracycline (OTC) and its metabolite 4-epi-OTC in broiler chicken's claws...
December 13, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27931180/characterisation-of-food-contact-non-stick-coatings-containing-tio2-nanoparticles-and-study-of-their-possible-release-into-food
#20
Viviana Golja, Goran Dražić, Martina Lorenzetti, Janja Vidmar, Janez Ščančar, Maša Zalaznik, Mitjan Kalin, Saša Novak
Novel nanoparticles containing non-stick coatings have been developed for food contact applications such as frying pans. Possible release of nanoparticles from such coatings into food is not known. In this paper, the characterisation of commercially available non-stick coatings was performed by use of FTIR, electron and optical microscopy, EDXS and XRD analysis. Characterisation revealed that the coatings contained micron- and nanosized rutile TiO2 particles, and quartz SiO2 embedded in a silicone polymer matrix...
December 9, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
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