نتایج جستجو برای: ochratoxin

تعداد نتایج: 2143  

Journal: :jundishapur journal of microbiology 0
parvin dehghan department of parasitology and mycology, school of medicine, isfahan university of medical sciences, isfahan, ir iran keyvan pakshir department of medical mycology and parasitology, basic sciences in infectious diseases research center, school of medicine, shiraz university of medical sciences, shiraz, ir iran hossein rafiei department of parasitology and mycology, school of medicine, isfahan university of medical sciences, isfahan, ir iran; department of parasitology and mycology, school of medicine, isfahan university of medical sciences, isfahan, ir iran. tel: +98-36680042, fax: +98-36688597 mostafa chadeganipour department of parasitology and mycology, school of medicine, isfahan university of medical sciences, isfahan, ir iran mojtaba akbari deputy of research, school of medicine, isfahan university of medical sciences, isfahan, ir iran

background ochratoxins belong to a group of mycotoxins produced as the secondary metabolites by filamentous fungi, such as aspergillus and penicillium. these toxins may be teratogenic, mutagenic, hepatotoxic, nephrotoxic, and may have immunosuppressive effects and pose a serious health problems to exposed humans and animals. objectives the present study aimed to determine the level of ochratoxi...

Journal: :Arhiv za higijenu rada i toksikologiju 2014
Barbara Jeršek Nataša Poklar Ulrih Mihaela Skrt Neda Gavarić Biljana Božin Sonja Smole Možina

Essential oils from oregano (Origanum vulgare L.), mint (Mentha piperita L.), fennel (Foeniculum vulgare Mill.), and pine (Abies alba Mill.) needles and cones, and their active substances thymol, carvacrol, menthol, and anisaldehyde were tested for antifungal activity against Penicillium verrucosum. The lowest minimal inhibitory concentrations (MICs) were achieved for essential oil of oregano, ...

Journal: :Applied and environmental microbiology 2001
T O Larsen A Svendsen J Smedsgaard

In order to explore the biochemical scope of ochratoxin A-producing penicillia, we screened 48 Penicillium verrucosum isolates for the production of secondary metabolites. Fungal metabolites were analyzed by high-pressure liquid or gas chromatography coupled to diode array detection or mass spectrometry. The following metabolites were identified: ochratoxins A and B, citrinin, verrucolones, ver...

Journal: :Revista iberoamericana de micologia 2013
Célia Soares Thalita Calado Armando Venâncio

BACKGROUND Maize is considered one of the crops more susceptible to mycotoxins in the world. Two of the mycotoxins commonly associated with maize are fumonisins and ochratoxin A. Aspergillus niger is a known producer of ochratoxin A and is easily found in maize. Recently, however, A. niger has been reported to produce as well fumonisins, mainly fumonisin B(2). AIMS The aim of this study was t...

Journal: :Applied and environmental microbiology 1985
C H Tong F A Draughon

The effects of antimicrobial food additives on growth and ochratoxin A production by Aspergillus sulphureus NRRL 4077 and Penicillium viridicatum NRRL 3711 were investigated. At pH 4.5, growth and toxin production by both A. sulphureus and P. viridicatum were completely inhibited by 0.02% potassium sorbate, 0.067% methyl paraben, 0.0667% methyl paraben, and 0.2% sodium propionate. At pH 5.5, 0....

ژورنال: سلامت و محیط زیست 2018

Background and Objective: Wheat is one of the most important cereals due to the supply of much of the flour used in bread making in most countries, such as Iran. Wheat contamination with mycotoxins is subject to different production and maintenance conditions. As a carcinogen and mutagen, monitoring the amount of mycotoxins in imported wheat and prevention of the entry of low quality wheat to t...

Arash Chaychi Nosrati Leila Modiri Sareh Akhavan,

Objective: Molds produce poisons called mycotoxins,OTA is one of the most relevant mycotoxins which is generally produced by Aspergillus, its presence in food and feed products being regulated in many countries. Methods: From the first May to the last October2011,sampling was done according to"CBS" instructions for indoor and outdoor situations. Isolates were identified and recorded in the labo...

2010
Eleonora Fusi Raffaella Rebucci Chiara Pecorini Anna Campagnoli Luciano Pinotti Francesca Saccone Federica Cheli Stig Purup Kristen Sejrsen Antonella Baldi

The aims of the current study were to determine the half-lethal concentration of ochratoxin A (OTA) as well as the levels of lactate dehydrogenase release and DNA fragmentation induced by OTA in primary porcine fibroblasts, and to examine the role of α-tocopherol in counteracting its toxicity. Cells showed a dose-, time- and origin-dependent (ear vs. embryo) sensitivity to ochratoxin A. Pre-inc...

2003
L. O. ADEBAJO O. J. POPOOLA

The mycoflora, levels of afllatoxins and the presence of ochratoxin A and zearalenone in nuts of Cola acuminata and C. nitida were determined immediately after curing and after 3, 6 and 9 months of storage in leaf-lined baskets. Five field fungi and 11 storage fungi were isolated. Aspergillus, Penicillium and Fusarium were the predominant genera. None of the target toxins was detected immediate...

2010
Peter G. Mantle Cyrille Amerasinghe Amy L. Brown Diana Herman Thomas Horn Thoger Krogh Edward W. Odell Tomas Rosenbaum Calin A. Tatu

DNA ploidy measurement has been applied uniquely to wax-embedded tissue of primary renal cell and metastatic tumours of a key experimental researcher on porcine ochratoxicosis, a control, and four transitional cell carcinomas from cases of Balkan endemic nephropathy. Primary renal tumour was diploid, and hyperdiploid metastasis was within the lower ploidy range for typical renal cell carcinoma....

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