Research Publications (Food Safety)

Publication date: September 2017
, Volume 66

Author(s): Josué Delgado, Rebecca A. Owens, Sean Doyle, Félix Núñez, Miguel A. Asensio

Feed mill workers may handle or process maize contaminated with aflatoxins (AFs). This condition may lead to an unacceptable intake of toxins deriving from occupational exposure. This study assessed the serological and urinary levels of AFs in workers exposed to potentially contaminated dusts in two mills. From March to April 2014, blood and urine samples were collected, on Monday and Friday morning of the same working week from 29 exposed workers and 30 non-exposed controls.

Abstract

Aims

Quantify aflatoxins, the potent carcinogens associated with stunting and immune suppression, in maize and groundnut across Zambia's three agroecologies and determine vulnerability to aflatoxin increases after purchase.

An improved analytical method compared with conventional ones was developed for simultaneous determination of 13 mycotoxins (deoxynivalenol, nivalenol, 3-acetylnivalenol, aflatoxin B1, aflatoxin B2, aflatoxin G1, aflatoxin G2, fumonisin B1, fumonisin B2, T-2, HT-2, zearalenone, and ochratoxin A) in cereal grains by liquid chromatography-tandem mass spectrometry (LC/MS/MS) after a single immunoaffinity column clean-up.

Journal of Food Protection, Volume 80, Issue 4, Page 626-631, April 2017.

Different in vitro and in silico approaches from our research group have demonstrated that neutral electrolyzed water (NEW) can be used to detoxify aflatoxins. The objective of this investigation was to evaluate the ability of NEW to detoxify B-aflatoxins (AFB1 and AFB2) in contaminated maize and to confirm detoxification in an in vivo experimental model. Batches of aflatoxin-contaminated maize were detoxified with NEW and mixed in commercial feed.

Publication date: August 2017
, Volume 78

Author(s): Ying Xiong, Ke Pei, Yunqing Wu, Yonghua Xiong

In food/feed control, mycotoxin analysis is often still performed “one analyte at a time”. Here a method is presented which aims at making mycotoxin analysis environmentally friendlier through replacing acetonitrile by ethyl acetate and reducing chemical waste production by analyzing four mycotoxins together, forgoing sample extract clean-up, and minimizing solvent consumption. For this, 2 g of test material were suspended in 8 mL water and 16 mL ethyl acetate were added.

Publication date: August 2017
, Volume 78

Author(s): Matthew J. Stasiewicz, Titilayo D.O. Falade, Murithi Mutuma, Samuel K. Mutiga, Jagger J.W. Harvey, Glen Fox, Tom C. Pearson, James W. Muthomi, Rebecca J. Nelson

Publication date: August 2017
, Volume 78

Author(s): N. Zheng, S.L. Li, H. Zhang, L. Min, Y.N. Gao, J.Q. Wang

Of all the food-contaminating mycotoxins, aflatoxins, and most notably aflatoxin B1 (AFB1), are found to be the most toxic and economically costly. Green farming is striving to replace fungicides and develop natural preventive strategies to minimize crop contamination by these toxic fungal metabolites.

Publication date: 15 August 2017
, Volume 229

Author(s): Eugènia Miró-Abella, Pol Herrero, Núria Canela, Lluís Arola, Francesc Borrull, Rosa Ras, Núria Fontanals

Publication date: August 2017
, Volume 78

Author(s): Songli Li, Li Min, Pengpeng Wang, Yangdong Zhang, Nan Zheng, Jiaqi Wang

Yanan An, Xiaochen Shi, Xudong Tang, Yang Wang, Fengge Shen, Qiaoli Zhang, Chao Wang, Mingguo Jiang, Mingyuan Liu, Lu Yu

Levels of mycotoxins produced by Fusarium species in genetically modified (GM) and near-isogenic maize, were determined using multi-analyte, microbead-based flow immunocytometry with fluorescence detection, for the parallel quantitative determination of fumonisin B1, deoxynivalenol, zearalenone, T-2, ochratoxin A, and aflatoxin B1. Maize varieties included the genetic events MON 810 and DAS-59122-7, and their isogenic counterparts. Cobs were artificially infested by F. verticillioides and F.

Aflatoxins are a group of secondary metabolites produced by members of Aspergillus Section Flavi that are dangerous to humans and animals. Nuts can be potentially contaminated with aflatoxins, often over the legal threshold. Food processes, including roasting, may have different effects on mycotoxins, and high temperatures have proven to be very effective in the reduction of mycotoxins.

Publication date: July 2017
, Volume 77

Author(s): Yamuna Devi, Rohit Thirumdas, C. Sarangapani, R.R. Deshmukh, U.S. Annapure

Publication date: Available online 20 February 2017
Food and Chemical Toxicology

Author(s): Hongyuan Zhou, Saji George, Crystal Hay, Joel Lee, He Qian, Xiulan Sun

Publication date: Available online 14 February 2017


Author(s): Kunlong Yang, Yinghang Liu, Linlin Liang, Zhenguo Li, Qiuping Qin, Xinyi Nie, Shihua Wang

Publication date: Available online 14 February 2017


Author(s): Ligia Manoel Martins, Anderson S. Sant'Ana, Maria Helena Pelegrinelli Fungaro, Josué José Silva, Maristela da Silva do Nascimento, Jens Christian Frisvad, Marta Hiromi Taniwaki

The objective of this study was to ensure and evaluate the safety of imported frozen beef liver traded in supermarkets of Kafr El-Sheikh Governorate, Egypt, through detection of Salmonella typhymurium, Salmonella enteritidies, Escherichia coli O157:H7, antibiotic residues, and aflatoxin B1 residue. Fifty samples of imported frozen liver were randomly collected from different shops at Kafr El-Sheikh Governorate for isolation of S. typhymurium, S. enteritidies, and E. coli O157:H7.

Abstract

A simple and rapid multi‐mycotoxin method for the determination of 17 mycotoxins  simultaneously  is  described  in  the  present  survey  on  durum  and  soft  wheat  pasta  samples.  Mycotoxins included in the study were those mainly reported in cereal samples: ochratoxin‐A  (OTA), aflatoxin&nb