the aim of this study was to evaluate aflatoxin contamination in feed and milk in dairy farm in kermanshah. alfalfa, corn silage and milk samples from 9 industrial and semi industrial dairy farms were collected during 2 months. blood samples were collected via tail venipuncture from 10 % of dairy cows in each farm for biochemical and hematological parameters. aflatoxin contamination in feeds an...

The metabolism of [14C]aflatoxin B1 by 9000 X g supernatant fraction of livers of duck, rat, mouse, monkey, and humans was compared by incubating the compound and liver fractions in the presence of cofactors and air for 30 min. The incubation medium was extracted with chloroform, and the soluble metabolites were separated on thinlayer plates and quantified; radioactivity remaining in the aqueou...

Use of raw milk and dairy products containing aflatoxin M1 (AFM1) has led to concern inconsumers. The present study determined the AFM1 in raw cow's milk in Qazvinprovince. In this research, 170 raw cow's milk were collected from dairy farm, dairyfactories, milk collection centers, and milk supply centers in Qazvin province during coldseasons in 2013, and all samples were examined for AFM1. The...

Background & Aims: Aflatoxin M1 (AFM1) is a major metabolite of aflatoxin B1 detected in the milk of mammals that their foods have been contaminated with aflatoxins. Aflatoxins are a group of highly toxic metabolites produced by the common fungi Aspergillus flavus, A. parasiticus. They are among the most potent carcinogens found in foods. Considering its risk to the human health and high consum...

This study was conducted to investigate the modifying effect of glutathione S-transferase (GST) M1 and T1 polymorphisms on aflatoxin-induced hepatocarcinogenesis among chronic hepatitis B virus surface antigen (HBsAg) carriers. A total of 79 HBsAg-positive cases of hepatocellular carcinoma (HCC) diagnosed between 1991 and 1997 were identified and individually matched to one or two HBsAg-positiv...

Aflatoxin B1 (AFB1), a naturally occurring mycotoxin (fungal toxin) in maize and nuts, causes liver cancer has been associated with other adverse health effects. Much less is known about the toxicity of its metabolite AFM1, which secreted milk mammals. Nonetheless, many nations have set regulatory limits for maximum allowable AFM1 dairy products. We collected comprehensive data on occurrence sa...

In this article, we designed and studied silicon oxynitride (SiON) microring-based photonic structures for biosensing applications. We designed waveguides, directional couplers, and racetrack resonators in order to measure refractive index changes smaller than 10-6 refractive index units (RIU). We tested various samples with different SiON refractive indexes as well as the waveguide dimensions ...

MS/MS daughter experiments were recorded for aflatoxins B1, B2, G1, G2, M1, M2, and aflatoxicol, using 3 ionization modes. Daughters were recorded from the molecular ion (M+) using electron impact ionization (EI). Daughters from the protonated molecules (MH+) were recorded in the positive ion mode and the daughters from the molecular anion (M-) were recorded in the negative ion mode using chemi...