journal
MENU ▼
Read by QxMD icon Read
search

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

journal
https://www.readbyqxmd.com/read/29775427/determination-of-fipronil-and-its-metabolites-in-chicken-egg-muscle-and-cake-by-a-modified-quechers-method-coupled-with-lc-ms-ms
#1
Qiaozhen Guo, Shan Zhao, Jing Zhang, Kailun Qi, Zhenxia Du, Bing Shao
An easy-to-use method for determining the levels of fipronil and its metabolites (fipronil-desulfinyl, fipronil-sulfone and fipronil-sulfide) in chicken egg, muscle and cake was developed and validated using a modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) approach coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. The samples were extracted using acetonitrile, salted out with sodium chloride at -20 °C, and then purified by combined PSA and C18 phases and anhydrous magnesium sulfate...
May 18, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29727263/on-site-detection-of-sub-mg-kg-melamine-mixed-in-powdered-infant-formula-and-chocolate-using-sharp-edged-gold-nanostar-substrates
#2
Thi Ha Nguyen, Thanh Danh Nguyen, Nguyen Hoang Ly, Cheol Hwan Kwak, Yun Suk Huh, Sang-Woo Joo
We report a facile method for sample preparation and sensitive on-site detection of melamine in powdered infant formula and chocolate using Raman spectroscopy on sharp-edged gold nanostars (AuNSs). The aggregation of AuNSs by sodium chloride (1.2 M) facilitates the more sensitive detection of melamine in comparison with spherical gold nanoparticles (AuNPs). Density functional theory quantum mechanical calculations were performed to determine the energetic stability on gold cluster atoms. Our spectroscopic data indicated that AuNSs are an efficient platform for detecting melamine in food mixtures...
May 4, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29727260/in-house-validation-of-a-liquid-chromatography-tandem-mass-spectrometry-method-for-the-determination-of-selective-androgen-receptor-modulators-sarms-in-bovine-urine
#3
Kathrin S Schmidt, Joachim Mankertz
A sensitive and robust liquid chromatography - tandem mass spectrometry (LC-MS/MS) method allowing the rapid screening and confirmation of selective androgen receptor modulators (SARMS) in bovine urine was developed and successfully validated according to Commission Decision 2002/657/EC, chapter 3.1.3 "alternative validation", by applying a matrix-comprehensive in-house validation concept. The confirmation of the analytes in the validation samples was achieved both on the basis of the multiple reaction monitoring (MRM) ion ratios as laid down in Commission Decision 2002/657/EC and by comparison of their EPI spectra with a reference mass spectral library by making use of the QTRAP technology...
May 4, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29718801/simultaneous-analysis-of-coccidiostats-and-sulfonamides-in-non-target-feed-by-hplc-ms-ms-and-validation-following-the-commission-decision-2002-657-ec
#4
Rosa Elvira Gavilán, Carolina Nebot, Ewelina Patyra, Jose Manuel Miranda, Carlos Manuel Franco, Alberto Cepeda
Taking into consideration the maximum level for coccidiostats included in the European Regulation 574/2011 and the fact that the presence of residues of sulfonamides in non-target feed is forbidden, the aim of this article is to present an analytical method based on HPLC-MS/MS for the identification and quantification of sulfonamides and coccidiostats in non-target feeds. The method was validated following Decision 2002/657/EC and recovery, repeatability, and reproducibility were within the limits stablished in the Decision...
May 2, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29718774/tissue-residue-depletion-of-moxidectin-in-lambs-ovis-aries-following-subcutaneous-administration
#5
Michelle Del Bianchi A Cruz, Maria Ângela M Fernandes, Alda Lúcia G Monteiro, Juliana A Teles, Arturo Anadón, Felix G R Reyes
To date, a tissue depletion study of moxidectin (MOX) in lambs is not available. Thus, considering that lamb meat is of great commercial interest in the world, the aim of the present study was to determine the residue levels of MOX in lamb target-tissues (muscle, liver, kidney, and fat) and subsequently calculate the MOX withdrawal period. For this purpose, the target-tissues were analysed by ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). Method validation was performed based on Commission Decision 2002/657/EC and VICH GL49...
May 2, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29718772/occurrence-of-glyphosate-in-beer-from-the-latvian-market
#6
Mārtiņš Jansons, Iveta Pugajeva, Vadims Bartkevičs
A sensitive LC-MS/MS method for the determination of glyphosate in beer has been developed, validated, and applied to analyse 100 beer samples from 24 different producers and distributors in Latvia. The selected samples represented most beer brands and varieties sold in local supermarkets. Different procedures for sample preparation and chromatographic separation were compared. The final version of the method consisted of solid phase extraction, chromatographic separation on aminopropyl stationary phase, and detection using tandem mass spectrometry...
May 2, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29718768/contamination-of-wild-boars-sus-scrofa-muscles-with-tetracycline-antibiotic-from-oral-delivered-rabies-vaccine-baits-preliminary-study
#7
Anna Gajda, Ewelina Nowacka-Kozak, Andrzej Posyniak
Tetracycline is used as a biomarker for rabies vaccine bait intended for foxes. However, there is a high probability of intake of the vaccine by other species living in the forest ecosystem, including wild boars (Sus scrofa), and tetracycline residues can occur in the animals' tissues. In this study, muscle samples from 144 animals were tested for the presence of tetracycline, collected after rabies vaccine distribution. For the quantitative analysis of tetracycline and its 4-epi form, a liquid chromatography - tandem mass spectrometry (LC-MS/MS) method was developed...
May 2, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29718767/analysis-of-isophthalaldehyde-in-migration-samples-from-polyethylene-terephthalate-packaging
#8
Jazmín Osorio, Sara Úbeda, Margarita Aznar, Cristina Nerín
In the present work, different pre-concentration strategies were evaluated for the analysis of isophthalaldehyde in migration samples from food packaging materials. This compound is a potential migrant in several copolymers used for food packaging and, since it is considered a non-intentionally added substance (NIAS), its concentration in migration samples must be determined. Derivatization was the first sample treatment evaluated. o-(2,3,4,5,6-Pentafluorobenzyl)hydroxylamine (PFBHA) was tested as derivatization agent but no satisfactory results were obtained...
May 2, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29718763/detection-of-melamine-in-milk-powder-using-mct-based-shortwave-infrared-hyperspectral-imaging-system
#9
Hoonsoo Lee, Moon S Kim, Santosh Lohumi, Byoung-Kwan Cho
Extensive research has been conducted on non-destructive and rapid detection of melamine in powdered foods in the last decade. While Raman and near-infrared (NIR) hyperspectral imaging techniques have been successful in terms of non-destructive and rapid measurement, they have limitations with respect to measurement time and detection capability, respectively. Therefore, the objective of this study was to develop a mercury cadmium telluride (MCT)-based short wave infrared (SWIR) hyperspectral imaging system and algorithm to detect melamine quantitatively in milk powder...
May 2, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29718760/uncertainties-in-the-determination-of-pyrrolizidine-alkaloid-levels-in-naturally-contaminated-honeys-and-comparison-of-results-obtained-by-different-analytical-approaches
#10
Christoph Gottschalk, Aiko Huckauf, Arne Dübecke, Florian Kaltner, Matthias Zimmermann, Ines Rahaus, Till Beuerle
The contamination of honey with hepatotoxic pyrrolizidine alkaloids (PAs) is a well-known hazard for food safety. While management strategies and controls of the honey industry aim to reduce the PA levels, uncertainties remain with regard to the safety of regionally produced and marketed honey. In addition, a previous study showed large differences of results obtained after various periods of storage and apparent differences between the analytical results of different laboratories. Therefore, this study aimed at examining these uncertainties by monitoring the impact of storage on the PA and PA N-oxide (PANO) content of two freshly harvested honeys and on possible demixing effects caused by pollen settling...
May 2, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29701534/development-and-validation-of-an-hplc-method-with-fluorescence-detection-for-the-determination-of-fluorescent-whitening-agents-migrating-from-plastic-beverage-cups
#11
João F Alberto Lopes, Emmanouil D Tsochatzis, Hendrik Emons, Eddo Hoekstra
An HPLC method with fluorescence detection has been developed and validated for the quantification of six fluorescent whitening agents (FWA) in plastic beverage cups after extraction and in food simulants after migration at 70 o C for 2 h. The sensitivity of the method was high with LODs ranging from 0.053 to 0.251 μg kg-1 and LOQs, from 0.107 to 0.504 μg kg-1 . Accuracy and precision were highly acceptable, with recoveries greater than 82 % and RSDs (%) below 16 %. The expanded combined uncertainty was found to be less than 23% for the measurements of all studied FWAs...
April 27, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29701502/effects-and-biotransformation-of-the-mycotoxin-deoxynivalenol-in-growing-pigs-fed-naturally-contaminated-grain-pelleted-with-and-without-the-addition-of-coriobacteriaceum-dsm-11798
#12
Amin Sayyari, Christiane Kruse Fæste, Ulrik Hansen, Silvio Uhlig, Tore Framstad, Dian Schatzmayr, Tore Sivertsen
Deoxynivalenol (DON) is one of the most prevalent Fusarium mycotoxins in grain and can cause economic losses in pig farming due to reduced feed consumption and lower weight gains. Biodetoxification of mycotoxins using bacterial strains has been a focus of research for many years. However, only a few in vivo studies have been conducted on the effectiveness of microbial detoxification of fusariotoxins. This study was therefore aimed at investigating the effect of a feed additive containing the bacterial strain Coriobacteriaceum DSM 11798 (the active ingredient in Biomin® BBSH 797) on growth performance and blood parameters, as well as uptake and metabolism of DON, in growing pigs...
April 27, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29676962/corrigendum
#13
(no author information available yet)
No abstract text is available yet for this article.
April 20, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29659322/applications-of-ft-nirs-combined-with-pls-multivariate-methods-for-the-detection-quantification-of-saccharin-adulteration-incommercial-fruit-juices
#14
Fazal Mabood, Javid Hussain, Farah Jabeen, Ghulam Abbas, Batoul A Allaham, Mohammed Albroumi, Said Alghawi, Saif Alameri, Syed A Gilani, Ahmed Al-Harrasi, Quazi M I Haq, Saima Farooq
Detection of adulteration in carbohydrates rich foods like fruit juices is particularly difficult because of the variety of the commercial sweeteners available that match the concentration profiles of the major carbohydrates in the foods. In present study, a new sensitive and robust assay using Fourier Transform Near Infrared Spectroscopy (FT-NIRS) combined with partial least square (PLS) multivariate methods has been developed for detection and quantification of saccharin adulteration in different commercial fruit juice samples...
April 16, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29648988/coccidiostats-in-milk-development-of-a-multi-residue-method-and-transfer-of-salinomycin-and-lasalocid-from-contaminated-feed
#15
Konrad Pietruk, Małgorzata Olejnik, Andrzej Posyniak
A confirmatory multi-residue method was developed for the determination in milk of 19 coccidiostats (amprolium, arprinocid, clazuril, clopidol, decoquinate, diclazuril, ethopabate, halofuginone, lasalocid, maduramicin, monensin, narasin, nicarbazin, nequinate, robenidine, salinomycin, semduramicin, toltrazuril sulfone and toltrazuril sulfoxide). Sample preparation utilizing extraction with organic solvent and clean up by solid phase extraction and freezing was found reliable and time-efficient. Optimized chromatography and mass spectrometry conditions with positive and negative electrospray ionization achieved sufficient sensitivity and selectivity...
April 12, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29648964/lc-ms-ms-based-determination-of-chloramphenicol-thiamphenicol-florfenicol-and-florfenicol-amine-in-poultry-meat-from-the-punjab-pakistan
#16
Muhammad Imran, Fazal-E- Habib, Saima Majeed, Abdul Tawab, Waqar Rauf, Moazur Rahman, Muhammad Umer, Mazhar Iqbal
A simple, reliable and sensitive liquid chromatography-tandem mass spectrometry based confirmatory method was redeveloped and validated for the simultaneous determination of chloramphenicol, thiamphenicol, florfenicol and florfenicol amine in chicken muscles. The analytes were extracted from minced chicken muscle with acetonitrile and ammoniated water mixture. A second extraction with ethyl acetate was followed by evaporation and dissolution of the residue in ammoniated methanol before defatting with n-hexane...
April 12, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29648941/development-of-an-immunochromatographic-assay-for-the-%C3%AE-adrenergic-agonist-feed-additive-zilpaterol
#17
Weilin L Shelver, David J Smith
Zilpaterol is a β-adrenergic agonist feed additive approved in the United States to increase weight gain and improve feed efficiency of cattle. A zilpaterol immunochromatographic assay was developed as an economical and user friendly rapid detection method for zilpaterol and validated using urine and tissue samples derived from animal studies. The assay sensitivity was 1.7 - 23.2 ng g-1 or mL-1 across a variety of feed and animal matrices and did not cross react with clenbuterol or ractopamine. No sample pre-treatment of cattle and sheep urine was needed, but horse urine and feed required dilution; skeletal muscle required solvent extraction prior to testing...
April 12, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29648940/transfer-of-primary-aromatic-amines-from-coloured-paper-napkins-into-four-different-food-matrices-and-into-cold-water-extracts
#18
Stefan Merkel, Oliver Kappenstein, Stefan Sander, Jürgen Weyer, Stephan Richter, Karla Pfaff, Andreas Luch
The aim of this study was to compare the transfer of primary aromatic amines (PAAs) from napkins into cold water extract (CWE) with transfer into four different food matrices. A HPLC-MS/MS multi-analyte method for quantification of 26 PAAs in CWE was validated and applied. In addition, the method was validated for seven different PAAs in four different food matrices (cucumber, rice, pickled gherkin and butter cookie) representing wet, dry, acidic, and fatty food. The CWEs of 12 coloured napkin samples were analysed, and three napkins released more than 0...
April 12, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29642753/determination-of-olaquindox-carbadox-and-cyadox-in-animal-feeds-by-ultra-performance-liquid-chromatography-tandem-mass-spectrometry
#19
Xiaohuan Miao, Lijun Xu, Haipu Li, Zhaoguang Yang
Olaquindox, carbadox, and cyadox are chemically synthesized antibacterial and growth promoting agents for animals. At high doses they may exert mutagenicity and hepatic and adrenal toxicities in animals. Regrettably, these substances are frequently abused or misused when added into animal feeds. Thus, developing a sensitive and reliable method for simultaneous determination of olaquindox, carbadox, and cyadox in different kinds of animal feeds is crucially important for food safety monitoring. In this paper we optimized instrumental conditions, various extraction solutions, different kinds of solid phase extraction cartridges, and effects of pH on the loading solvents of the Oasis HLB cartridge...
April 12, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29620437/estimated-u-s-infant-exposures-to-3-mcpd-esters-and-glycidyl-esters-from-consumption-of-infant-formula
#20
Judith H Spungen, Shaun MacMahon, Jessica Leigh, Brenna Flannery, Grace Kim, Stuart Chirtel, Deborah Smegal
A dietary exposure assessment was conducted for 3-monochloropropane-1,2-diol (3-MCPD) esters (3-MCPDE) and glycidyl esters (GE) in infant formulas available for consumption in the U.S. 3-MCPDE and GE are food contaminants generated during the deodorization of refined edible oils, which are used in infant formulas and other foods. 3-MCPDE and GE are of potential toxicological concern because these compounds are metabolized to free 3-MCPD and free glycidol in rodents, and may have the same metabolic fate in humans...
April 5, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
journal
journal
42163
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"