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Food Additives & Contaminants. Part B, Surveillance

Eileen Abt, Jennifer Fong Sam, Patrick Gray, Lauren Posnick Robin
Cocoa powder and chocolate products are known to sometimes contain cadmium (Cd) and lead (Pb) from environmental origins. A convenience sample of cocoa powder, dark chocolate, milk chocolate, and cocoa nib products was purchased at retail in the U.S. and analyzed using Inductively Coupled Plasma Mass Spectrometry to assess Cd and Pb concentrations. Cd and Pb were evaluated in relation to the percent cocoa solids and to the reported origin of the cocoa powder and chocolate products. Cd ranged from 0.004-3.15 mg/kg and Pb ranged from <LOD-0...
January 8, 2018: Food Additives & Contaminants. Part B, Surveillance
Otmar Zoller, Peter Rhyn, Heinz Rupp, Jürg A Zarn, Christoph Geiser
A total of 243 samples of divers foodstuffs were analysed for glyphosate and AMPA using an LC/MS/MS method with a relatively low LOQ in the range of 0.0005 to 0.0025 mg kg-1. Main contributors for dietary glyphosate and AMPA intake were cereals and pulses. The results suggest that pasta is a very important foodstuff for dietary glyphosate residue intake in Switzerland. Interestingly all samples of wine, fruit juice and nearly all samples of honey tested positive for glyphosate although at very low levels. A dietary risk assessment was conducted...
December 28, 2017: Food Additives & Contaminants. Part B, Surveillance
Alemayehu Getachew, Alemayehu Chala, Ingerd Skow Hofgaard, May Bente Brurberg, Michael Sulyok, Anne-Marte Tronsmo
The natural occurrence of fungi, mycotoxins and fungal metabolites was investigated in 100 samples of maize grains collected from south and southwestern Ethiopia in 2015. The maize samples were contaminated by Fusarium, Aspergillus and Penicillium species. Using liquid chromatography tandem mass spectrometry 127 secondary metabolites were analysed. Zearalenone was the most prevalent mycotoxin, occurring in about 96% of the samples. Zearalenone sulfate was the second most prevalent, present in 81% of the samples...
December 19, 2017: Food Additives & Contaminants. Part B, Surveillance
Monica Scordino, Francesco Lazzaro, Marco A Borzì, Leonardo Sabatino, Pasqualino Traulo, Giacomo Gagliano
This paper reports the occurrence of dehydroacetic acid in cheese and cheese coatings collected in Italy during Agricultural Ministry Official control. Dehydroacetic acid is an antimicrobial substance not allowed to be used in EU countries as a food additive, with unknown effects on human health. Dehydroacetic acid was measured by a validated HPLC method according to Commission Decision 2002/657/EC criteria in terms of specificity, linearity, precision and accuracy, limit of detection and limit of quantification...
December 11, 2017: Food Additives & Contaminants. Part B, Surveillance
R Valmorbida, G D Savi, J R Silva, M M O Yanez, C E S Soares, C Runtzel, P N Nascimento, V M Scussel
The quality and safety of maize (Zea mays L.) from different grain storage units (GSUs), located in the main producing region of Rondonia State (RO), Northern Brazil were evaluated. Maize grains (n= 76) stored in four GSUs were collected from July to November 2014 and evaluated for grain damages, humidity, fungi and fumonisins (FBs) content. The climate conditions data were also obtained from plant growing to storage periods. Regarding the moisture content and water activity, these varied from 10.0 to 16.1% and 0...
November 16, 2017: Food Additives & Contaminants. Part B, Surveillance
Igor Tomasevic, Margarita Dodevska, Milan Simić, Smiljana Raicevic, Violeta Matovic, Ilija Djekic
In total 7,351 meat preparations and fresh processed meat products were analyzed from 555 different Serbian meat producers over a 10 year period, 4½ years before and 5½ years after mandatory HACCP implementation. From the obtained results, it could be concluded that HACCP has contributed to a better alignment of practices with the legal provisions. The share of non-compliant samples dropped from 18.6% before HACCP to 8.3% after its mandatory implementation. Average sulfite concentrations for all categories of meat preparations and fresh processed meat products decreased by 43%, declining from 33...
November 16, 2017: Food Additives & Contaminants. Part B, Surveillance
Dafeng Jiang, Jindong Chen, Fenghua Li, Wei Li, Lianlong Yu, Fengjia Zheng, Xiaolin Wang
In the present study, 100 commercial breads and biscuits were investigated for the occurrence of deoxynivalenol (DON) and its acetylated derivatives 3-acetyldeoxynivalenol (3-Ac-DON) and 15-acetyldeoxynivalenol (15-Ac-DON). The target mycotoxins were determined by isotope dilution ultrahigh performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). DON was determined in 95% of the test samples with a mean value of 153.3 µg kg(-1). Compared with DON, 3-Ac-DON and 15-Ac-DON were far less frequently detected, with mean values of 1...
November 10, 2017: Food Additives & Contaminants. Part B, Surveillance
Helga Tima, Adrienn Berkics, Zoltán Hannig, András Ittzés, Eleonóra Kecskésné Nagy, Csilla Mohácsi-Farkas, Gabriella Kiskó
Among Fusarium mycotoxins deoxynivalenol (DON) is the most common contaminant in case of cereals and cereal based foods in Hungary. In this study Hungarian wheat (n=305), maize (n=108), wheat flour (n=179), pasta (n=226) samples were analysed (N=818). The samples were collected in 2008-2015 in Hungary. Applied methods of analysis were enzyme-linked immunosorbent assay (ELISA) and liquid-chromatography coupled with a mass spectrometer (LC-MS). Results were compared and evaluated with Hungarian wheather data...
November 6, 2017: Food Additives & Contaminants. Part B, Surveillance
Víctor Alonso García Londoño, Martín Puñales, Marcela Reynoso, Silvia Resnik
Forty samples of milk powder purchased in Uruguay were analysed to assess melamine levels. Trichloroacetic acid and acetonitrile were used to extract and precipitate milk proteins previously to clean up of the samples by solid-phase extraction and then were determined by liquid chromatography coupled to ultraviolet detection. The limits of detection and quantification of melamine were 0.006 mg kg(-1) and 0.019 mg kg(-1), respectively. Milk was fortified with melamine at three levels, producing average recoveries higher than 83...
November 6, 2017: Food Additives & Contaminants. Part B, Surveillance
Castro-González Numa Pompilio, Calderón-Sánchez Francisco, Castro de Jesús Jair, Moreno-Rojas Rafael, Tamariz-Flores José V, Pérez-Sato Marcos, Soní-Guillermo Eutiquio
The aim of this work was to determine Ni, Cr, Cu, Zn, Pb and As levels in raw milk and Oaxaca and ranchero type cheeses, produced in areas irrigated with waste water from Puebla in Mexico. Milk results showed a mean Pb level of 0.03 mg kg(-1), which is above the maximum limit as set by Codex Alimentarius and the European Commission standards. For As a mean value of 0.12 mg kg(-1) in milk was obtained. Mean As and Pb levels in milk were below the Mexican standard. Milk whey and ranchero cheese had mean Pb levels of 0...
October 31, 2017: Food Additives & Contaminants. Part B, Surveillance
Yarong Zhao, Qiongshan Wang, Jianxiang Huang, Liyan Ma, Zhihui Chen, Fuhua Wang
Wheat is an important cereal but it is often contaminated with mycotoxins. The natural occurrence of aflatoxin B1 (AFB1) and sterigmatocystin (STC) was determined in 178 food samples (32 wheat samples and 146 wheat products) purchased from Chinese supermarkets. The methodology was validated, the wheat and wheat products samples were treated with a modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) and quantified by liquid chromatography-tandem mass spectrometry (LC-MS/MS). From these samples 18...
October 19, 2017: Food Additives & Contaminants. Part B, Surveillance
Ljilja Torović
This report presents data on the occurrence of aflatoxins and ochratoxin A in different types of flour marketed in Serbia. A total of 114 samples of wheat, buckwheat, rye, oat, barley, rice, millet and corn flours was collected in the period 2012-2016 and analysed using high performance liquid chromatography with fluorescence detection. Among flours other than corn, aflatoxin B1 was quantified only in rice, while OTA was found in 29% of the samples. In corn flours the percentage of positive samples varied greatly over the years: AFB1 7...
October 19, 2017: Food Additives & Contaminants. Part B, Surveillance
Jelka Pleadin, Manuela Zadravec, Tina Lešić, Nada Vahčić, Jadranka Frece, Mario Mitak, Ksenija Markov
The aim of this study was to investigate ochratoxin A (OTA) and citrinin (CIT) co-occurrence in different unprocessed cereals (n=189) originating from Croatia during a three-year investigation period (2014-2016) using validated enzyme immunoassay (ELISA) methods. CIT and OTA were determined in 49% and 7% of samples, respectively. Significantly higher (p < 0.05) overall mean concentrations were determined for CIT (66.8 ± 76.0 µg/kg) in comparison to OTA (5.2 ± 1.1 µg/kg). Based on the analysis of all investigated cereals, CIT was found about 15 times more frequently than OTA and in similarly (15-fold) higher concentrations, irrespective of the cultivation year...
October 18, 2017: Food Additives & Contaminants. Part B, Surveillance
Fan Hu, Shao Qiang Jin, Bing Qi Zhu, Wan Qin Chen, Xin Yi Wang, Zhu Liu, Jin Wen Luo
Acrylamide content in food market in China was determined with the goal to evaluate related health concern. In this survey, products of rice, potato corn, wheat as well as dried fruit slices and instant foods were analysed. All these types of thermal-processed carbohydrate-rich foods were frequently consumed in China. They were purchased from markets in Zhejiang province and analysed using a liquid chromatography tandem/mass spectrometry method. Acrylamide was detected in 94.3% of 105 investigated samples, ranging from 10 to 3649 μg/kg with an average value of 231 μg/kg and a median of 114 μg/kg...
September 2017: Food Additives & Contaminants. Part B, Surveillance
Wei-Ching Hung, Guan-Jhih Peng, Wen-Ju Tsai, Mei-Hua Chang, Chia-Ding Liao, Su-Hsiang Tseng, Ya-Min Kao, Der-Yuan Wang, Hwei-Fang Cheng
The adulteration of olive oil is an important issue around the world. This paper reports an indirect method by which to identify 3-monochloropropane-1,2-diol (3-MCPD) esters in olive oils. Following sample preparation, the samples were spiked with 1,2-bis-palmitoyl-3-chloropropanediol standard for analysis using gas chromatograph-tandem mass spectrometry. The total recovery ranged from 102.8% to 105.5%, the coefficient of variation ranged from 1.1% to 10.1%, and the limit of quantification was 0.125 mg/kg...
September 2017: Food Additives & Contaminants. Part B, Surveillance
Renata G Costa, Homegnon A F Bah, Matheus J Bandeira, Sérgio S P Oliveira, José A Menezes-Filho
Lead (Pb) and cadmium (Cd) were determined in mangrove root crab (Goniopsis cruentata) tissues (in natura) and in two culinary preparations by graphite furnace atomic absorption spectrometry. Mangrove root crab samples from three sampling sites along the Jaguaripe River, Bahia, Brazil, where lead-glazed ceramics are produced, and from two commercial preparations were collected or purchased in March and April 2016. Cd levels in raw and processed samples were below the methods' limits of detection (0.016 mg kg(-1)), while Pb levels in the raw tissues were determined only in the gills (0...
September 2017: Food Additives & Contaminants. Part B, Surveillance
Bruna A Silva, Rafaela Rosa, Juliana R Silva, Geovana D Savi, Vildes M Scussel
Fresh and frozen pamonhas, a native Brazilian food made with sweet corn (Zea mays L.), similar to the Mexican tamal, which has been incorporated into the country's diet, were investigated for fumonisins (FBs: FB1 and FB2) contamination and product characteristics. The laboratory conditions of the applied fumonisins method with liquid chromatography and fluorescence detection were validated. Five out of the total samples showed FBs contamination above the national maximum level of 1000-1500 µg/kg. Despite this, in 59...
September 2017: Food Additives & Contaminants. Part B, Surveillance
Nikolina J Novakov, Željko A Mihaljev, Brankica D Kartalović, Bojan J Blagojević, Jelana M Petrović, Miroslav A Ćirković, Dragan R Rogan
The aim of this study was to determine the level of heavy metals and polycyclic aromatic hydrocarbons (PAHs) in 57 samples of canned tuna, 25 samples of canned sardines, and 16 samples of canned smoked sprouts, collected from supermarkets in Serbia. Heavy metal levels (lead, cadmium, mercury, arsenic, iron, copper, and zinc) were determined using an inductive coupled plasma mass spectrometry method. Sixteen analysed PAHs were determined using a gas chromatography-mass spectrometry method. The trace elements in canned fish were in the range (mg kg(-1)) of 0...
September 2017: Food Additives & Contaminants. Part B, Surveillance
Numa Pompilio Castro Gonzalez, Rafael Moreno-Rojas, Francisco Calderón Sánchez, Alicia Moreno Ortega, Mayté Juarez Meneses
This study aimed to determine the heavy metal content in cow's milk produced in areas irrigated with waste water and to evaluate the health risk with daily consumption of milk for children. The sample consisted of four zones in which small farmers were selected and the milk of 160 cows in two seasons of the year. On average, the metals in the milk in decreasing order were 0.36; 0.046; 0.035; 0.029; 0.015; 0.012, and 0.002 mg kg(-1) for Zn, Pb, As, Cu, Cr, Ni, and Cd, respectively. The Pb exceeded the limits allowed by Codex...
September 2017: Food Additives & Contaminants. Part B, Surveillance
Angela Suárez-Jacobo, Victor Manuel Alcantar-Rosales, Diana Alonso-Segura, Maria Heras-Ramírez, Dalau Elizarragaz-De La Rosa, Ofelia Lugo-Melchor, Octavio Gaspar-Ramirez
Some international organisations established maximum residue limits (MRLs) in food to protect human health. Mexico lacks regulations in this matter, affecting national and international trade from agroindustry. The aim of this study was to diagnose pesticide residues in oranges from Nuevo Leon, México, in citrus orchards. In May 2014, 100 orange fruit samples were taken randomly from orchards and subjected to analysis for 93 pesticides at residual level by GC/QQQ-MS and LCQ-TOF-MS. Results showed the presence of 15 pesticide residues in the samples...
September 2017: Food Additives & Contaminants. Part B, Surveillance
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