نتایج جستجو برای: aflatoxigenic
تعداد نتایج: 282 فیلتر نتایج به سال:
Aflatoxins are secondary toxic metabolites produced by some Aspergillus spp. particularly, Aspergillus flavus and A. parasiticus that contaminate food and feed. The objective of this study was to evaluate the contamination of feedstuffs with Aspergillus spp. and detect genes involved in the aflatoxin biosynthesis pathway of A. flavus and A. parasiticus isolates. A total of 110 cow feed samples ...
The present study was carried out to investigate the aflatoxigenic and ochratoxigenic fungi and their mycotoxins from 194 samples of 5 types of spices (black pepper, turmeric, fennel, green cardamom and mace). Ochratoxin A producing A. niger and aflatoxin producing A. flavus were the most dominant species present in all types of spice. 52% of A. flavus and 44% of A. parasiticus from black peppe...
PURPOSE To document transcriptional activation (expression) of key aflatoxin biosynthetic pathway genes in corneal isolates of Aspergillus flavus. METHODS The expression of certain regulatory (aflatoxin regulatory [aflR] and aflatoxin J [aflJ]) and structural (polyketide synthase acetate [pksA] and norsolonic acid-1 [nor-1]) genes in four corneal A. flavus isolates was evaluated by reverse tr...
Sixteen fonio millet and 17 sesame samples were analysed for incidence of moulds, especially aflatoxigenic Aspergillus species, in order to determine the safety of both crops to consumers, and to correlate aflatoxin levels in the crops with levels produced by toxigenic isolates on laboratory medium. Diverse moulds including Alternaria, Aspergillus, Cercospora, Fusarium, Mucor, Penicillium, Rhiz...
The present study focused on aflatoxin (AF) uptake by sugarcanes from contaminated soils, and its persistence in jaggery. Analysis of 25 agricultural soil samples from sugarcane growing fields revealed that 80% were found contaminated with AF ranging from 0.5 to 22 ppb and all samples harbored aflatoxigenic fungi. Forty percent of the juices extracted from sugarcane grown in contaminated soil r...
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