In this study, the production of aflatoxin B1 (AFB1) and cyclopiazonic acid (CPA) was investigated in toxigenic and non-toxigenic Aspergillus flavus with respect to expression of aflR, veA and laeA genes that are involved to toxins production. A. flavus strains were cultured in YES broth at 28 °C for 4 days and the presence of (AFB1) and (CPA) was confirmed and measured by TLC and HPLC. The exp...

The secondary metabolism of toxigenic fungi can produce mycotoxins, substances that are toxic for both humans and animals. Mycotoxins their by-products found in various biological tissues considered biomarkers, concentrations these directly proportional to the level exposure. Mineral adsorbents may prevent mycotoxin absorption. aim this review is study feasibility biomarkers as tools assess eff...

grape, like other horticultural products due to high humidity, low relative ph and wealth of nutrients, is subjected to attack by pathogenic fungi during the harvest and storage stages. in this study, at first, the some post-harvest pathogenic fungi of grape were isolated in meshgin-shahr and two fungal species including botrytis cinerea and cladosporium cladosporioides were identified as the d...

The Brazil nut is a nutritionally rich food, produced and consumed in tropical regions. On the other hand, it may be suitable to toxigenic fungi consequently contamination by aflatoxins (AFL), toxic substances consumers. In this context, objective of work was evaluate occurrence AFL raw nuts, that is, before being subjected industrial drying stages. Of 23 samples were purchased at retail city M...

Yamagishi, Takayoshi (Kanazawa University, Kanazawa, Japan), Shoichi Ishida, and Shoki Nishida. Isolation of toxigenic strains of Clostridium perfringens from soil. J. Bacteriol. 88:646-652. 1964-Strains of Clostridium perfringens were isolated from soil specimens heated at various temperatures for different lengths of time and were toxigenically examined. When higher temperatures were used, fe...

Rice is a staple food for over half of the world’s population, and fungal spoilage in stored rice may occur when moisture content temperature are conducive. Aspergillus sp. Penicillium most harmful toxigenic species that produce mycotoxins. Molds pose potential threat to public health cause huge economic loss. Therefore, it great importance find out how molds multiply rice. This study focused o...

Vibrio cholerae is commonly found in estuarine water systems. Toxigenic O1 and O139 V. cholerae strains have caused cholera epidemics and pandemics, whereas the nontoxigenic strains within these serogroups only occasionally lead to disease. To understand the differences in the genome and clonality between the toxigenic and nontoxigenic strains of V. cholerae serogroups O1 and O139, we employed ...