zearalenone (zea) mycotoxin is a potent estrogenic metabolite. it is the primary toxin causing infertility, abortion or other breeding problems. a hplc method was validated for zea in foods using a monolithic column with sample clean-up on an immunoaffinity column. a certified reference material (crm) from fapas (uk) was analyzed. a survey of zea was performed on the 72 samples of rice, bread, ...

the contamination of cereals with toxic secondary metabolites of fungi, mycotoxins, is a permanent challenge in human health. these toxins are produced by a few fungi are mainly of the genera fusarium , aspergillus and penicillium . ochratoxin a is a nephrotoxic mycotoxin, which possesses carcinogenic, teratogenic, immunotoxic and possibly neurotoxic properties. zearalenone is a non-steroidal e...

Zearalenone is a mycotoxin compound produced mainly by Fusarium species of fungi which is present in cereals cultivated all over the world. The aim of the research was to examine the toxic influence of different doses of zearalenone on liver cells through estimating mycotoxin influence on markers evaluation of biochemical liver damage. The research was carried out on male Wistar rats. The rats ...

Zearalenone is a mycotoxin with estrogenic effects on mammals that is produced by several species of Fusarium. We found that zearalenone and its derivatives inhibit the growth of filamentous fungi on solid media at concentrations of < or =10 microg/ml. The fungitoxic effect declined in the order zearalenone > alpha-zearalenol > beta-zearalenol. The mycoparasitic fungus Gliocladium roseum produc...

Zearalenone, a mycotoxin produced by fungi of the genus Fusarium, including F. graminearum, triggers reproduction disorders in certain animals and hyperestrogen syndromes in humans. Current research investigates three concentrations of neem oil extract (0.1, 0.25 and 0.5%) in reducing the production of zearalenone. Neem oil extract decreased zearalenone amount in the three concentrations but hi...

The chemiluminescent properties of the estrogenic mycotoxin zearalenone in the presence of aqueous micellar media were investigated using steady state fluorescence techniques. Micelles of surfactants sodium dodecyl sulfate (SDS), hexadecyltrimethylammonium bromide (CTAB), and non-ionic Triton X-100 enhanced the fluorescence intensity of zearalenone in aqueous solutions. The binding constants ha...

Farm animals are exposed to zearalenone through the feed because of the widespread occurrence of this mycotoxin in cereals and clinical reproductive disorders due to mycotoxin effects are often reported in farm animal species. This review describes the metabolism, the mechanistic aspects, the clinical reproductive symptoms and the in vitro effects on functional parameters of oocytes and sperm c...

"Masked mycotoxins" senso strictu are conjugates of mycotoxins resulting from metabolic pathways activated by the interplay between pathogenic fungi and infected plants. Zearalenone, an estrogenic mycotoxin produced by Fusarium spp, was the first masked mycotoxin ever described in the literature, but its biotransformation has been studied to a lesser extent if compared to other compounds such a...

Mycotoxins are secondary fungal metabolites that may have mutagenic, carcinogenic, cytotoxic and endocrine disrupting effects. These substances frequently contaminate agricultural commodities despite efforts to prevent them, so successful detoxification tools are needed. The application of microorganisms to biodegrade mycotoxins is a novel strategy that shows potential for application in food a...

Reproductive failure in swine is often a difficult diagnostic problem. If diagnoses of infectious disease or management related problems are not obtained, feed quality and safety may be questioned. Mycotoxins are often present in swine feed in the amount that can have detrimental impact on production and reproduction. Problems are expressed only as alterations of the reproductive cycle, reduced...