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/29052494/occurrence-of-toluene-in-canadian-total-diet-foods-and-its-significance-to-overall-human-exposure
#1
Xu-Liang Cao, Luc Pelletier, Melissa Sparling, Robert Dabeka
Levels of most VOCs in foods are usually low because of their volatility, and human exposure to VOCs is expected to be mainly via inhalation of ambient and indoor air. However, dietary exposures to VOCs can be significant to overall exposures if elevated concentrations of VOCs are present in foods consumed in high amounts and/or on a regular basis, and this was demonstrated in this study with the occurrence data of toluene from the recent 2014 Canadian Total Diet Study (TDS). Concentrations of toluene in the composite samples of most food types from the 2014 TDS are low and similar to the results from the previous 2007 TDS with some exceptions, such as beef steak (670 ng/g (2014 TDS) vs...
October 20, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29052491/an-assessment-of-the-acute-dietary-exposure-to-glyphosate-using-deterministic-and-probabilistic-methods
#2
C L Stephenson, C A Harris, R Clarke
Use of glyphosate in crop production can lead to residues of the active substance and related metabolites in food. Glyphosate has never been considered acutely toxic; however in 2015 the European Food Safety Authority (EFSA) proposed an acute reference dose (ARfD). This differs from the Joint FAO/WHO Meeting on Pesticide Residues (JMPR) who in 2016, in line with their existing position, concluded that an ARfD was not necessary for glyphosate. This paper makes a comprehensive assessment of short-term dietary exposure to glyphosate from potentially-treated crops grown in the EU and imported third country food sources...
October 20, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29052472/extraction-and-reliable-determination-of-acrylamide-from-thermally-processed-foods-using-ionic-liquid-based-ultrasound-assisted-selective-microextraction-combined-with-spectrophotometry
#3
Nail Altunay, Adil Elik, Ramazan Gürkan
Acrylamide (AAm) is a carcinogenic chemical that can form in thermally processed foods by the Maillard reaction of glucose with asparagine. AAm can easily be formed especially in frequently consumed chips and cereal-based foods depending on processing conditions. Considering these properties of AAm, a new, simple and green method is proposed for the extraction of AAm from thermally processed food samples. In this study, an ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate, [Bmim][BF4]) as extractant was used in the presence of a cationic phenazine group dye, 3,7-diamino-5-phenylphenazinium chloride (PSH(+), phenosafranine) at pH 7...
October 20, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29052468/evaluation-of-the-content-of-tio2-nanoparticles-in-the-coatings-of-chewing-gums
#4
William Dudefoi, Hélène Terrisse, Aurelian Florin Popa, Eric Gautron, Bernard Humbert, Marie-Hélène Ropers
Titanium dioxide is a metal oxide used as a white pigment in many food categories, including confectionery. Due to differences in the mass fraction of nanoparticles contained in TiO2, the estimated intakes of TiO2 nanoparticles differ by a factor of 10 in the literature. To resolve this problem, a better estimation of the mass of nanoparticles present in food products is needed. In this study, we focused our efforts on chewing gum, which is one of the food products contributing most to the intake of TiO2. The coatings of four kinds of chewing gum, where the presence of TiO2 was confirmed by Raman spectroscopy, were extracted in aqueous phases...
October 20, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28942718/occurrence-of-pyrrolizidine-alkaloids-in-animal-and-plant-derived-food-results-of-a-survey-across-europe
#5
Patrick P J Mulder, Patricia López, Massimo Castelari, Dorina Bodi, Stefan Ronczka, Angelika Preiss-Weigert, Anja These
Pyrrolizidine alkaloids (PAs) are secondary metabolites of plant families such as Asteraceae or Boraginaceae and are suspected to be genotoxic carcinogens. Recent investigations revealed their frequent occurrence in honey and particularly in tea. To obtain a comprehensive overview of the PA content in animal- and plant-derived food from the European market, and to provide a basis for future risk analysis, a total of 1105 samples were collected in 2014 and 2015. These comprised milk and milk products, eggs, meat and meat products, (herbal) teas, and (herbal) food supplements collected in supermarkets, retail shops, and via the internet...
October 17, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28934070/presence-of-trihalomethanes-in-ready-to-eat-vegetables-disinfected-with-chlorine
#6
Valentina Coroneo, Valentina Carraro, Barbara Marras, Alessandro Marrucci, Sara Succa, Barbara Meloni, Antonella Pinna, Alberto Angioni, Adriana Sanna, Marco Schintu
Trihalomethanes (THMs) - CHCl3, CHCl2Br, CHClBr2 and CHBr3 - are drinking water disinfection by-products (DBPs). These compounds can also be absorbed by different types of foods, including ready-to-eat (RTE) fresh vegetables. The potential absorption of THMs during washing of RTE vegetables could pose a potential risk to consumers' health. The concentration of THMs in the water used in the manufacturing process of these products shall not exceed the limit of 100 or 80 µgL(-1) according to European Union (EU) and United States legislation, respectively...
October 11, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28980514/determination-of-testosterone-esters-and-nortestosterone-esters-in-animal-blood-serum-by-lc-ms-ms
#7
Martina Rejtharová, Libor Rejthar, Katarína Čačková
A sensitive and robust confirmatory method for determination of steroid esters in blood serum is essential for reliable monitoring of possible illegal use of steroid hormones as growth promoters in meat production. A previously used sample preparation methodology was improved. The procedure consists of protein precipitation and removal of phospholipids by dispersive SPE Supel(TM) QuE Z-Sep (Sigma-Aldrich) followed by clean-up on alumina column and LC-MS/MS measurement. The modified method has been validated according to Commission Decision 2002/657/EC...
October 5, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28980508/corrigendum
#8
(no author information available yet)
No abstract text is available yet for this article.
October 5, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28934011/solid-phase-extraction-of-large-volume-of-water-and-beverage-samples-to-improve-detection-limits-for-gc-ms-analysis-of-bisphenol-a-and-four-other-bisphenols
#9
Xu-Liang Cao, Svetlana Popovic
Solid phase extraction (SPE) of large volumes of water and beverage products was investigated for the GC-MS analysis of bisphenol A (BPA), bisphenol AF (BPAF), bisphenol F (BPF), bisphenol E (BPE), and bisphenol B (BPB). While absolute recoveries of the method were improved for water and some beverage products (e.g. diet cola, iced tea), breakthrough may also have occurred during SPE of 200 mL of other beverages (e.g. BPF in cola). Improvements in method detection limits were observed with the analysis of large sample volumes for all bisphenols at ppt (pg/g) to sub-ppt levels...
October 5, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28976262/corrigendum
#10
(no author information available yet)
No abstract text is available yet for this article.
October 4, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28971742/erratum
#11
(no author information available yet)
No abstract text is available yet for this article.
October 3, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28956733/chemical-fingerprinting-identifies-echium-vulgare-eupatorium-cannabinum-and-senecio-spp-as-plant-species-mainly-responsible-for-pyrrolizidine-alkaloids-in-bee-collected-pollen
#12
Christina Kast, Verena Kilchenmann, Hans Reinhard, Benoit Droz, Matteo Angelo Lucchetti, Arne Dübecke, Gudrun Beckh, Otmar Zoller
Various studies have shown that bee-collected pollen sold as nutritional supplements may contain toxic pyrrolizidine alkaloids (PAs) and, thus, pose a potential health risk for consumers. The level of contamination may vary according to its geographical and botanical origin. Here, the PA content of pollen produced in Switzerland was studied and 32 commercially available bee-collected pollen supplements produced between 2010 and 2014 were analysed. In addition, at what time period bees collect PA-containing pollen was investigated...
September 28, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28952423/acrylamide-levels-in-potato-crisps-in-europe-from-2002-to-2016
#13
Stephen J Powers, Donald S Mottram, Andrew Curtis, Nigel G Halford
European manufacturers' data on acrylamide in potato crisps from 2002 to 2016 were analysed. A previous study showed a 53% reduction in mean acrylamide levels from 763 ng g(-1) in 2002 to 358 ng g(-1) in 2011. Analysis of data from the longer period showed that since 2011 there has been a levelling off, with the mean level for 2016 being 412 ng g(-1) (still a 46% reduction from 2002), suggesting that the most effective acrylamide reduction measures had been devised and implemented by 2011. There were similar trends in the 90(th) and 95(th) quantile values, with the 90(th) quantile values being below 1000 ng g(-1) (the European Commission's current 'Indicative Value' for acrylamide in potato crisps) since 2010...
September 27, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28937864/determination-of-seven-pyrethroid-pesticides-residue-in-vegetables-by-gas-chromatography-using-carboxylated-multi-walled-carbon-nanotubes-as-dispersion-solid-phase-extraction-sorbent
#14
Peng Sun, Yuling Gao, Chong Xu, Yongfu Lian
:A novel carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) dispersive solid phase extraction (d-SPE) method combined with gas chromatography (GC) with ECD detection was developed for the determination of seven pyrethroid pesticides in cucumber, spinach, eggplant, tomato and carrot. We optimized d-SPE conditions including the type and volume of the extractant, the type and amount of the sorbent, and shaking time. Under the optimal conditions, the linear range was from 2.0 to 2000 μg kg(-1). The recoveries were from 88...
September 22, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28934065/detection-and-characterization-of-aluminium-containing-nanoparticles-in-chinese-noodles-by-single-particle-icp-ms
#15
Katrin Loeschner, Manuel Correia, Carlos López Chaves, Inge Rokkjær, Jens J Sloth
This study investigated Chinese noodles for the presence of aluminium-containing nanoparticles by using inductively coupled plasma mass spectrometry in single particle mode (spICP-MS) after enzymatic digestion by α-amylase. The aluminium concentrations in the noodle samples, determined by conventional ICP-MS without or with the use of hydrofluoric acid for digestion, were 5.4 ± 1.9 µg/g and 10.1 ± 2.2 µg/g (N=21), respectively. Aluminium-containing nanoparticles were detected by spICP-MS in all 21 samples...
September 21, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28934056/determination-of-several-common-disinfection-by-products-in-frozen-foods
#16
Maria Jose Cardador, Mercedes Gallego
Disinfected water and/or disinfectants are commonly used by the freezing industry in such processes as sanitising, washing, blanching, cooling and transporting the final product. For this reason, disinfection by-products (DBPs) can be expected in frozen foods. This study focused on the presence of DBPs in a wide variety of frozen vegetables, meats and fish. For this purpose, the 14 halogenated DBPs more prevalent in disinfected water were selected (4 trihalomethanes, 7 haloacetic acids, 2 haloacetonitriles and trichloronitromethane)...
September 21, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28934031/simultaneous-detection-of-15-antibiotic-growth-promoters-in-bovine-muscle%C3%AF-blood-and-urine-by-uplc-ms-ms
#17
Zhi Wang, Zongwei Shi, Cunxian Xi, Guomin Wang, Shurui Cao, Lei Zhang, Bobin Tang, Zhaode Mu
An analytical method was established for the rapid detection of antibiotic growth promoters (AGPs) in bovine muscle, and bovine blood and bovine urine, using ultra high performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). After the addition of an aqueous solution of EDTA-Na2, the pH of bovine urine samples was directly adjusted to 5.2 by acetic acid-ammonium acetate and purified by HLB solid-phase extraction cartridge; bovine muscle and bovine blood samples processing were extracted with acetonitrile (ACN) and ACN-water (90:10; v/v) without any purification step...
September 21, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28934012/liquid-chromatography-tandem-mass-spectrometry-method-for-simultaneous-quantification-of-azoxystrobin-and-its-metabolites-azoxystrobin-free-acid-and-2-hydroxybenzonitrile-in-greenhouse-grown-lettuce
#18
Maheswor Gautam, Inge S Fomsgaard
Lettuce is an important part of the diet in Europe. The permitted levels of pesticides in lettuce are strictly regulated and there is growing urge among food safety authorities to analyse pesticide metabolites as well. Azoxystrobin is one of pesticides that is frequently detected in lettuce. Although there are several analytical methods for the determination of azoxystrobin in lettuce, a sensitive method for the determination of its metabolites in lettuce is lacking. This study aimed at developing an extraction and LC-MS/MS method for the simultaneous determination of azoxystrobin, and its metabolites azoxystrobin free acid and 2-hydroxybenzonitrile in lettuce...
September 21, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28934005/risk-assessment-of-dietary-exposure-to-phytosterol-oxidation-products-from-baked-food-in-china
#19
Yinzhou Hu, Mengmeng Wang, Weisu Huang, Guoliang Yang, Tiantian Lou, Shiyun Lai, Baiyi Lu, Lufei Zheng
Phytosterols are nutritional phytochemicals that may undergo oxidation and be transformed into phytosterol oxidation products (POPs), thus inducing pathological and toxic effects. This work investigated 4 main phytosterols and 28 POPs in 104 kinds of commercial baked food by using gas chromatography-mass spectrometry. The dietary exposure and hazard index values (HI) associated with POPs from baked food consumption in China were estimated by using Monte Carlo simulation. Concentrations of the total phytosterols were between 3...
September 21, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28871897/dissipation-kinetics-and-safety-evaluation-of-tebuconazole-and-trifloxystrobin-in-tea-under-tropical-field-conditions
#20
Mariappan Paramasivam, Manthirachalam Deepa, Chellamuthu Selvi, Subramanian Chandrasekaran
Dissipation kinetics of tebuconazole, trifloxystrobin and its acid metabolite residues were studied in tea under tropical field conditions using GC-MS (SIM). The average recoveries ranged from 80.7% to 105.8%, with a RSD of <9.3%. Dissipation rate for both doses applied followed first-order kinetics, with half-lives in green leaves in the range of 2.8-3.3 and 2.9-3.3 days; ranges in processed tea were 2.7-3.6 days for trifloxystrobin and 3.0-3.1 days for tebuconazole. The trifloxystrobin residues were not transferred into the tea infusion during the infusion process; tebuconazole did transfer, in the range of 14...
September 21, 2017: 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"