نتایج جستجو برای: aflatoxin b2

تعداد نتایج: 19703  

Journal: :European journal of nutrition & food safety 2023

Aflatoxin levels in animal feed should be observed from the farm to table ensure safety of animals and humans. The contamination cereals other agricultural supplies used production could happen pre-harvest phase or post-harvest phase. study sought determine broiler selected farms Nairobi City County. A total 42 samples were collected. Samples analyzed using LCMS/MS technique. Results show that ...

2015
Toshikazu Ikoma Yasuo Tsuchiya Takao Asai Kiyoshi Okano Naoko Ito Kazuo Endoh Masaharu Yamamoto Kazutoshi Nakamura

Aflatoxins B1 (AFB1), B2 (AFB2), and G1(AFG1) have been detected in red chili peppers from Chile, Bolivia, and Peru, each of which have a high incidence of gallbladder cancer (GBC) as shown in our previous studies (Tsuchiya el al., 2011; Asai et al., 2012). The association between exposure to AFB1 and the development of liver cancer had already been demonstrated by several studies (e.g., WHO 20...

Journal: :The Japanese journal of veterinary research 2013
Wilfred Angie Abia Grace Nella Simo Benedikt Warth Michael Sulyok Rudolf Krska Angele Tchana Paul Fewou Moundipa

For the first time in Cameroon, this paper reports on multiple mycotoxins occurrences in poultry feeds. Twenty feed samples collected from different poultry farms were analyzed for 320 fungal metabolites by liquid chromatography electrospray ionization tandem mass spectrometry. Results showed feeds contamination by 68 metabolites including 18 mycotoxins/metabolites currently regulated in the Eu...

2014
Cassandra McCullum Paul Tchounwou Li-Sheng Ding Xun Liao Yi-Ming Liu

A facile magnetic solid phase extraction (MSPE) of aflatoxins (AFs) from liquid samples was developed using polydopamine-coated magnetic nanoparticles (PD-MNPs) as the adsorbent. PD-MNPs were prepared from amine-terminated MNPs and dopamine via an in situ oxidative self-polymerization approach. Under the selected MSPE conditions, extraction yields ranging from 59.3% for AF G2 to 89.0% for AF B1...

2005
Allen F. Harper

Received: July 5, 2005 Accepted: August 19, 2005 Aflatoxins are toxic by-products produced by the fungi Aspergillus flavus and Aspergillus parasiticus. These toxins can infect a variety of grains and oilseeds, but most often occur in corn, the predominant feed grain in North America. Four principle metabolites have been characterized and identified as aflatoxins B1, G1, B2, and G2, but the B1 m...

2013
Maria de Lourdes Mendes de Souza Michael Sulyok Otniel Freitas-Silva Sônia Soares Costa Catherine Brabet Miguel Machinski Junior Beatriz Leiko Sekiyama Eugenia Azevedo Vargas Rudolf Krska Rainer Schuhmacher

The objective of this study was to quantitatively evaluate mycotoxins in samples of maize and poultry feed produced in Brazil. A multimycotoxin method based on HPLC-MS/MS was applied to investigate the occurrence of toxical fungal metabolites in 119 samples collected from poultry feed factory integrated poultry farms: maize grain (74), poultry feed (36), and feed factory residue (9). Twenty of ...

Introduction: Aflatoxins (AFs) are a group of mycotoxins created as metabolic items for the most part by three types of Aspergillus including Aspergillus flavus, Aspergillus parasiticus and the uncommon Aspergillus nomius. Eighteen aflatoxins have been identified up to now, but only six of them have been found in food and feed. Methods: The occurrence of aflatoxins in 32 samples of roasted red...

2006
John D. Groopman Julia A. Hasler Laura J. Trudel Anthony Pikul Paul R. Donahue Gerald N. Wogan

The development of molecular dosimetry methods will simplify the identification of people at high risk for cancer. A combined monoclonal antibody ¡mmunoaffinitychromatography/high performance liquid chromatography method has been devised to isolate and quantify aflatoxinDNA adducts and other metabolites in rat urine samples. We report the production of 11 different monoclonal antibodies recogn...

2006
David A. Schwartz

AFLATOXIN B1, a carcinogenic metabolite of the fungus Aspergillus flavus, is acutely toxic to a number of species, including rats. Male rats (LD50 7-2 mg./kg.) are more susceptible to the acute oral effects of aflatoxin than are females (LD50 17.9 mg./kg.) (Butler, 1964). Aflatoxin B1 is metabolised to aflatoxin M1 which is present in the blood and urine of dosed rats (Butler and Clifford, 1965...

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