نتایج جستجو برای: aflatoxin af

تعداد نتایج: 26300  

2015
Eman M. Ragheb

Five experimental groups were used to evaluate the efficiency of sodium bentonite (BNT) and ascorbic acid (AA) in reducing the toxicity of aflatoxin B1 in ElSalam chicks (Egyptian local chicks) diets. A total number of 450 unsexed one-day old chicks were wing banded, weighted and randomly assigned to 5 groups of five replicates (18 chicks/replicate). The experimental groups were as follow: 1) b...

Journal: :IOP conference series 2023

Abstract To analyze natural mycoflora of hazelnuts in Sulaimani province Iraq, this study conducted by collecting 33 (27 raw hazelnut kernel and 6 paste) samples determine their mycotoxin. Polyphasic approach consisting morphological examination molecular characterization based on Polymerase Chain Reaction (species specific PCR) was performed fungi identification. For the incidence aflatoxins (...

Journal: :The Biochemical journal 1972
G E Neal

1. Aflatoxin B(1), administered in vivo, inhibits the incorporation of [(14)C]orotic acid in vivo into rat liver nuclei, and also inhibits both Mg(2+)- and Mn(2+)-dependent RNA polymerase activities in nuclei assayed in vitro. 2. Aflatoxin B(1) inhibits the cortisol-induced increase in incorporation of [(14)C]leucine in vivo, but does not affect the control value of this activity. 3. Aflatoxin ...

Journal: :Indian journal of medical sciences 2005
P Koirala S Kumar B K Yadav K C Premarajan

BACKGROUND There are many contaminants like aflatoxin present in food products. Aflatoxin in comparison to many other contaminants is very toxic and also carcinogenic. There are reports of outbreak of aflatoxin toxicity in many parts of the world. AIM To find out the level of aflatoxin in common food and feed. SETTING The study was conducted in 16 districts of the Eastern region of Nepal. ...

2013
Ellen E. Yard Johnni H. Daniel Lauren S. Lewis Michael E. Rybak Ekaterina M. Paliakov Andrea A. Kim Joel M. Montgomery Rebecca Bunnell Mamo Umuro Abudo Willis Akhwale Robert F. Breiman Shahnaaz K. Sharif

Aflatoxins contaminate approximately 25% of agricultural products worldwide. They can cause liver failure and liver cancer. Kenya has experienced multiple aflatoxicosis outbreaks in recent years, often resulting in fatalities. However, the full extent of aflatoxin exposure in Kenya has been unknown. Our objective was to quantify aflatoxin exposure across Kenya. We analysed aflatoxin levels in s...

2012
Jiujiang Yu

Traditional molecular techniques have been used in research in discovering the genes and enzymes that are involved in aflatoxin formation and genetic regulation. We cloned most, if not all, of the aflatoxin pathway genes. A consensus gene cluster for aflatoxin biosynthesis was discovered in 2005. The factors that affect aflatoxin formation have been studied. In this report, the author summarize...

Journal: :Applied microbiology 1975
S K Gupta T A Venkitasubramanian

Probable factors influencing resistance to aflatoxin synthesis in soybeans have been investigated by using cultures of Aspergillus parasiticus NRRL 3240. Soybeans contain a small amount of zinc (0.01 mug/g) bound to phytic acid. Autoclaving soybeans at 15 pounds (6803.88 g) for 15 min increases the aflatoxin production, probably by making zinc available. Addition of zinc to both autoclaved and ...

2017
Nicole J Mitchell Hui-Husan Hsu Ram Krishna Chandyo Binob Shrestha Ladaporn Bodhidatta Yu-Kang Tu Yun-Yun Gong Patricia A Egner Manjeswori Ulak John D Groopman Felicia Wu

Exposure to aflatoxin, a mycotoxin common in many foods, has been associated with child growth impairment in sub-Saharan Africa. To improve our understanding of growth impairment in relation to aflatoxin and other risk factors, we assessed biospecimens collected in Nepalese children at 15, 24, and 36 months of age for aflatoxin exposure. Children (N = 85) enrolled in the Bhaktapur, Nepal MAL-ED...

2015
W. Paul Williams Gary L. Windham

Aflatoxins, produced by the fungus Aspergillus flavus, occur naturally in maize. Contamination of maize grain with aflatoxin is a major food and feed safety problem and greatly reduces the value of the grain. Plant resistance is generally considered a highly desirable approach to reduction or elimination of aflatoxin in maize grain. In this investigation, a diallel cross was produced by crossin...

2007
D. T. B. O. L.

Aspergillus jlavus and Aspergillus niger commonly co-occur in preharvest maize and one report suggests that this association promotes a greater incidence of aflatoxin. Other studies have shown that Aspergillus niger can prevent, or substantially reduce, aflatoxin formation by Aspergillus jlavus in autoclaved maize kernels, and this led us to examine the effect of A. niger on aflatoxin formation...

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