نتایج جستجو برای: Aflatoxin contamination

تعداد نتایج: 57719  

2012
N Taheri S Semnani G Roshandel M Namjoo H Keshavarzian AG Chogan F Ghasemi Kebria H Joshaghani

BACKGROUND Due to the high toxicity of aflatoxin and its effects on public health, determination of aflatoxin level in Wheat flour samples in the Golestan province, north of Iran was investigated. To examine the effect of seasonal changes, summer and winter sampling was performed with standard sampling methods. METHODS A total of 200 flour samples were collected from 25 factories. HPLC method...

Journal: :iranian journal of public health 0
n taheri s semnani g roshandel m namjoo h keshavarzian ag chogan

background: due to the high toxicity of aflatoxin and its effects on public health, determination of aflatoxin level in wheat flour samples in the golestan province, north of iran was investigated. to examine the effect of seasonal changes, summer and winter sampling was performed with standard sampling methods. methods: a total of 200 flour samples were collected from 25 factories. hplc method...

2012
Hirut Kebede Hamed K. Abbas Daniel K. Fisher Nacer Bellaloui

Increased aflatoxin contamination in corn by the fungus Aspergillus flavus is associated with frequent periods of drought and heat stress during the reproductive stages of the plants. The objective of this study was to evaluate the relationship between aflatoxin contamination and physiological responses of corn plants under drought and heat stress. The study was conducted in Stoneville, MS, USA...

Journal: :iranian journal of public health 0
v.parvaneh m.shahin g.karim j.kordi

in this investigation aflatoxin contamination of eighty different iranian white cheeses were determined by t.l.c. method. the result of this study showed that, 97.5% of the samples contained aflatoxin m1 & m2 which are transferred from milk. as far as direct contamination, 30% of the samples contained aflatoxin b1, g1, g2, from which 2.5% contained aflatoxin b1, 5% contained aflatoxin b2, 20% c...

2006
Neil W Widstrom Maurice E Snook David M Wilson Thomas E Cleveland William W McMillian

Several phenols and related compounds have been shown to have detrimental effects on insects while others have antibiotic activity against fungi which attack higher plants. Insects have also been implicated as contributors to preharvest contamination of corn [maize], Zea mays L, by aflatoxin. The objectives, therefore, were to determine (a) if commercial corn hybrids vary in their silk maysin c...

2003
N. W. Widstrom B. Z. Guo D. M. Wilson

Aflatoxin contamination of corn in the field is influenced by several factors. In the southern U.S., insect populations are usually large every year. Drought caused by warmer and drier than normal weather is conducive to A. flavus infection and aflatoxin contamination of corn, Zea mays L. When loose-husked hybrids are used in the southern U.S., they accentuate insect damage and aflatoxin contam...

Journal: :Phytopathology 2015
S K Mutiga V Hoffmann J W Harvey M G Milgroom R J Nelson

We conducted a survey of aflatoxin and fumonisin in maize in western Kenya. In a regional survey of aflatoxin conducted in 2009 across three agroecological zones within three administrative regions, milled maize samples were collected from 985 patrons of 26 hammer mills. Aflatoxin contamination was detected in 49% of samples and was above the regulatory (10 ppb) in 15% of the samples overall; 6...

Journal: :Journal of economic entomology 2002
W Paul Williams Paul M Buckley Gary L Windham

Aflatoxin, a potent carcinogen, is produced by the fungus Aspergillus flavus Link: Fr. Drought, high temperatures, and insect damage contribute to increased levels of aflatoxin contamination in corn, Zea mays L. Plant resistance is widely considered a desirable method of reducing aflatoxin contamination. Germplasm lines with aflatoxin resistance have been developed. This investigation was under...

1999
C. H. Bock P. J. Cotty Robert E. Lee

Aflatoxins are potent mycotoxins produced by fungi in Aspergillus section flavi. The toxic effect of aflatoxins on humans and other animals is well known (7); thus, many countries regulate the quantity of aflatoxins allowed in foods and feeds (17). Aspergillus flavus Link:Fr. infects many oilseed crops and is frequently, as with cottonseed, the primary cause of aflatoxin contamination (13). Whe...

Journal: :International journal of food microbiology 2007
Peter J Cotty Ramon Jaime-Garcia

Aflatoxins are potent mycotoxins that cause developmental and immune system suppression, cancer, and death. As a result of regulations intended to reduce human exposure, crop contamination with aflatoxins causes significant economic loss for producers, marketers, and processors of diverse susceptible crops. Aflatoxin contamination occurs when specific fungi in the genus Aspergillus infect crops...

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